[ECO "B54"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 *

[ECO "E34"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 *

[ECO "D11"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nbd2 Bf5 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 Nf6 4. f4 e5 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Nc3 e5 4. Nd5 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. d5 d6 4. Nc3 e5 *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. d5 e5 4. e4 d6 *

[ECO "A44"]

1. d4 c5 2. d5 e5 3. Nc3 Nf6 4. e4 d6 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. Bd3 c5 4. d5 e5 *

[ECO "A44"]

1. d4 c5 2. d5 e5 3. Nc3 Nf6 4. Nf3 d6 *

[ECO "A45"]

1. d4 Nf6 2. g3 c5 3. d5 e5 4. Nc3 d6 *

[ECO "A43"]

1. d4 c5 2. d5 Nf6 3. g3 e5 4. Bg2 d6 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. Bb2 Nf6 4. Bxf6 exf6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d5 3. Bb2 c6 4. e3 Bf5 *

[ECO "B21"]

1. e4 c5 2. f4 d6 3. Nc3 Nf6 4. Bc4 e6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. b3 e6 4. c4 Nf6 *

[ECO "A34"]

1. c4 c5 2. Nc3 Nf6 3. e4 d6 4. Nge2 e6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c5 3. g3 d6 4. d3 e6 *

[ECO "A41"]

1. d4 d6 2. g3 e6 3. Nf3 Nf6 4. Bg2 c5 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 e6 4. Bd3 c5 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Qc2 e6 *

[ECO "B20"]

1. e4 c5 2. Ne2 d6 3. g3 Nf6 4. d3 e6 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. Bb2 e6 4. f4 Nf6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. f4 e6 4. Nf3 Nf6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c6 3. c4 d6 4. Nc3 Bf5 *

[ECO "A04"]

1. Nf3 c5 2. b3 Nf6 3. Bb2 e6 4. e3 d6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. d5 d6 4. Nc3 e6 *

[ECO "A43"]

1. d4 c5 2. d5 Nf6 3. g3 d6 4. Bg2 e6 *

[ECO "C00"]

1. e4 e6 2. f4 d5 3. e5 c5 4. c3 Nh6 *

[ECO "A00"]

1. b4 Nf6 2. Bb2 e6 3. b5 d5 4. e3 c5 *

[ECO "D03"]

1. d4 d5 2. Nf3 Nf6 3. Bg5 c5 4. dxc5 e6 *

[ECO "D02"]

1. Nf3 d5 2. d4 c5 3. dxc5 e6 4. e4 Nf6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. dxc5 e6 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Bf4 c5 4. dxc5 e6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. g3 c5 4. dxc5 e6 *

[ECO "B11"]

1. e4 c6 2. Nf3 d5 3. Nc3 Bg4 4. h3 Bh5 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nf3 c5 4. dxc5 e6 *

[ECO "B20"]

1. e4 c5 2. Ne2 d5 3. exd5 Nf6 4. c4 e6 *

[ECO "D32"]

1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 Nf6 *

[ECO "D30"]

1. d4 d5 2. Nf3 e6 3. Bg5 Nf6 4. c4 c5 *

[ECO "A40"]

1. d4 e6 2. h4 Nf6 3. Nf3 d5 4. Bg5 c5 *

[ECO "D00"]

1. d4 d5 2. a3 e6 3. Nc3 Nf6 4. Bg5 c5 *

[ECO "A00"]

1. b4 e6 2. a3 d5 3. Nf3 Nf6 4. Bb2 c5 *

[ECO "A19"]

1. c4 Nf6 2. Nc3 e6 3. e4 c5 4. g3 d5 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. b3 c5 *

[ECO "A17"]

1. c4 Nf6 2. Nc3 e6 3. b3 d5 4. e3 c5 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. g3 Nf6 4. Bg2 Qa5+ *

[ECO "A30"]

1. c4 c5 2. b3 Nf6 3. Nc3 e6 4. Bb2 d5 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 e6 4. d3 d5 *

[ECO "A17"]

1. c4 e6 2. Nc3 Nf6 3. g3 c5 4. d3 d5 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. g3 e6 4. d3 d5 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. e3 Nf6 4. a3 c5 *

[ECO "A40"]

1. d4 e6 2. h4 d5 3. e3 c5 4. c4 Nf6 *

[ECO "A40"]

1. d4 e6 2. h4 Nf6 3. Nf3 d5 4. c4 c5 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Qc2 c5 4. e3 d5 *

[ECO "A40"]

1. d4 e6 2. g3 d5 3. c4 c5 4. Bg2 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. h4 c5 4. d5 Qb6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. a3 d5 4. Nf3 c5 *

[ECO "A40"]

1. d4 e6 2. h4 Nf6 3. Nc3 d5 4. Bf4 c5 *

[ECO "D00"]

1. Nc3 d5 2. d4 Nf6 3. Bf4 c5 4. e3 e6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Bd3 c5 *

[ECO "D00"]

1. d4 d5 2. Bf4 e6 3. e3 Nf6 4. Nd2 c5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 e6 3. d4 d5 4. Bf4 c5 *

[ECO "D00"]

1. d4 d5 2. f4 e6 3. e3 Nf6 4. Bd3 c5 *

[ECO "A40"]

1. d4 e6 2. h4 d5 3. Nf3 Nf6 4. Nc3 c5 *

[ECO "A40"]

1. d4 e6 2. h4 Nf6 3. Nf3 c5 4. e3 d5 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. b3 Nf6 4. Bb2 c5 *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. Bg5 c6 4. e3 Qb6 *

[ECO "A06"]

1. Nf3 d5 2. c3 Nf6 3. g3 e6 4. d4 c5 *

[ECO "A05"]

1. Nf3 Nf6 2. h3 e6 3. e3 d5 4. d4 c5 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. e3 Nf6 4. Be2 d5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 d5 4. Be2 Nf6 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Nd2 c5 4. g3 Nf6 *

[ECO "A01"]

1. b3 d5 2. Bb2 Nf6 3. e3 c5 4. f4 e6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 e6 4. Nc3 c5 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 e6 4. Be2 c5 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 c6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 c5 4. Ba3 e6 *

[ECO "A06"]

1. Nf3 d5 2. b3 c5 3. g3 e6 4. Bg2 Nf6 *

[ECO "A04"]

1. Nf3 c5 2. b3 e6 3. g3 Nf6 4. Bb2 d5 *

[ECO "A04"]

1. Nf3 c5 2. b3 Nf6 3. Bb2 e6 4. Nc3 d5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 c5 3. c3 e6 4. Bg2 d5 *

[ECO "A06"]

1. b3 d5 2. Nf3 c5 3. e3 Nf6 4. Ba3 e6 *

[ECO "A08"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nf6 4. Ne5 e6 *

[ECO "B22"]

1. e4 c5 2. c3 e5 3. Bc4 Nf6 4. Nf3 d5 *

[ECO "A30"]

1. c4 c5 2. e3 e5 3. Nc3 Nf6 4. Be2 d5 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. b3 Bg7 4. Bb2 O-O *

[ECO "A34"]

1. c4 c5 2. Nc3 e5 3. g3 Nf6 4. d3 d5 *

[ECO "A20"]

1. c4 e5 2. a3 Nf6 3. Nc3 c5 4. d3 d5 *

[ECO "D00"]

1. d4 d5 2. Bg5 Nf6 3. Bxf6 exf6 4. e3 c5 *

[ECO "A80"]

1. d4 f5 2. g4 d5 3. g5 e6 4. Bf4 Ne7 *

[ECO "A01"]

1. b3 e5 2. Bb2 f6 3. e4 Ne7 4. Nc3 d5 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. e3 g6 4. f4 Ne7 *

[ECO "C34"]

1. e4 e5 2. f4 exf4 3. Nf3 Ne7 4. Bc4 d5 *

[ECO "C34"]

1. e4 e5 2. f4 exf4 3. Nf3 Ne7 4. Nc3 d5 *

[ECO "A04"]

1. Nf3 f5 2. b3 d6 3. d4 Nf6 4. Bf4 h6 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bf4 Nf6 4. Nc3 d6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 Bxd2+ 4. Qxd2 b6 *

[ECO "A80"]

1. d4 f5 2. c3 Nf6 3. Bf4 h6 4. e3 d6 *

[ECO "A41"]

1. d4 d6 2. Nf3 f5 3. c3 Nf6 4. Bf4 h6 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bf4 Nf6 4. e3 d6 *

[ECO "A00"]

1. c3 f5 2. d4 d6 3. Bf4 h6 4. e4 Nf6 *

[ECO "A80"]

1. d4 f5 2. Qd3 d6 3. Nc3 Nf6 4. e4 fxe4 *

[ECO "A80"]

1. d4 f5 2. Nf3 d6 3. c3 Nf6 4. Bg5 Ne4 *

[ECO "A80"]

1. d4 f5 2. Qd3 d6 3. Nc3 d5 4. Bf4 Nf6 *

[ECO "A80"]

1. d4 f5 2. Qd3 d6 3. Nf3 Nf6 4. Nc3 d5 *

[ECO "A80"]

1. d4 f5 2. Qd3 d6 3. Nf3 d5 4. Bg5 Nf6 *

[ECO "A04"]

1. Nf3 f5 2. e4 fxe4 3. Ng5 Nf6 4. d3 d5 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Nd2 b6 4. Ngf3 Nf6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Bb4+ *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. e4 dxe4 4. Bg5 Nf6 *

[ECO "D00"]

1. d4 d5 2. Nc3 Nf6 3. Bf4 Nh5 4. Be5 f6 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Nh3 d5 4. Bg5 Ne4 *

[ECO "A10"]

1. c4 f5 2. g3 Nf6 3. Nc3 d6 4. d3 g6 *

[ECO "A41"]

1. c4 d6 2. d4 g6 3. Nf3 f5 4. Bf4 Nf6 *

[ECO "A80"]

1. d4 f5 2. Nf3 d6 3. g3 Nf6 4. b3 g6 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. b4 d5 *

[ECO "A10"]

1. c4 f5 2. Nf3 Nf6 3. g3 g6 4. b4 d5 *

[ECO "A80"]

1. d4 f5 2. Nf3 g6 3. b3 Nf6 4. Nc3 d5 *

[ECO "A04"]

1. Nf3 f5 2. b3 Nf6 3. Bb2 g6 4. Nc3 d5 *

[ECO "A00"]

1. g3 c5 2. Bg2 g6 3. Nf3 Bg7 4. d4 cxd4 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. Bf4 g6 4. h3 Nd5 *

[ECO "A00"]

1. b4 g6 2. e4 Nf6 3. e5 Nd5 4. a3 d6 *

[ECO "B03"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Be2 g6 *

[ECO "A45"]

1. d4 Nf6 2. c3 g6 3. Bf4 d6 4. Nf3 Nh5 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 d6 3. Bf4 g6 4. e3 Nh5 *

[ECO "B07"]

1. d4 d6 2. e4 g6 3. Bc4 Nf6 4. Nc3 Nxe4 *

[ECO "E61"]

1. d4 Nf6 2. c4 g6 3. Nc3 Ng4 4. e4 d6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bh4 g5 4. Bg3 d6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. d4 g6 4. Nc3 d5 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be2 d5 *

[ECO "A43"]

1. d4 c5 2. d5 g6 3. Nc3 Bg7 4. e4 d6 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. Be3 Nf6 4. Bd3 d5 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. f4 Nf6 4. e5 dxe5 *

[ECO "D80"]

1. c4 Nf6 2. d4 g6 3. Nc3 d5 4. Bg5 dxc4 *

[ECO "A00"]

1. b4 g6 2. Bb2 Nf6 3. Nf3 d5 4. c4 dxc4 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 g6 4. e4 Nf6 *

[ECO "A00"]

1. g3 d5 2. d3 Nf6 3. Bg2 g6 4. c4 dxc4 *

[ECO "D80"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. h4 dxc4 *

[ECO "D90"]

1. c4 Nf6 2. d4 g6 3. Nc3 d5 4. Nf3 dxc4 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 d5 4. c4 dxc4 *

[ECO "D70"]

1. d4 Nf6 2. c4 g6 3. g3 d5 4. Bg2 dxc4 *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. e3 g6 4. Nc3 Bg7 *

[ECO "A40"]

1. d4 g6 2. Nc3 d5 3. e4 dxe4 4. Nxe4 Nf6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. Bc4 g6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. Be2 g6 *

[ECO "D00"]

1. d4 d5 2. Bg5 g6 3. c4 Nf6 4. e3 Ne4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. e3 g6 4. Nf3 Ne4 *

[ECO "D82"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bf4 Nh5 *

[ECO "A45"]

1. d4 Nf6 2. c3 g6 3. Bf4 d5 4. e3 Nh5 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 d5 4. b4 Ne4 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. e4 Nxe4 4. d4 d5 *

[ECO "D03"]

1. d4 d5 2. Nf3 Nf6 3. Bg5 Ne4 4. Bf4 g6 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 Be7 4. Nf3 Nf6 *

[ECO "A00"]

1. b4 g6 2. e4 Nf6 3. Nc3 d5 4. e5 Ne4 *

[ECO "A41"]

1. d4 d6 2. Bg5 h6 3. Bh4 g5 4. Bg3 Nf6 *

[ECO "A00"]

1. h3 g5 2. d4 h6 3. e4 Nf6 4. Nc3 d6 *

[ECO "A04"]

1. Nf3 d6 2. d4 g6 3. Bg5 h6 4. Bd2 Nf6 *

[ECO "D00"]

1. d4 d5 2. Bg5 h6 3. Bh4 Nf6 4. Nf3 g5 *

[ECO "D00"]

1. d4 d5 2. Bg5 g6 3. Nc3 Nf6 4. f3 h6 *

[ECO "A00"]

1. b4 g6 2. Bb2 Nf6 3. g4 h6 4. Nf3 d5 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. Nc3 Nf6 4. Bg5 h6 *

[ECO "D00"]

1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. Bg5 h6 *

[ECO "A45"]

1. d4 Nf6 2. c3 d5 3. Bf4 Nh5 4. Bg5 h6 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. b3 Nf6 4. Bb2 Bd6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 Nb6 4. d4 d6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. g3 Nb6 4. d4 d6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. g3 Nb6 4. Nf3 d6 *

[ECO "B03"]

1. e4 Nf6 2. e5 Nd5 3. d4 Nb6 4. a4 d6 *

[ECO "D06"]

1. d4 Nf6 2. c4 d5 3. cxd5 Nxd5 4. e4 Nb6 *

[ECO "A15"]

1. c4 Nf6 2. g3 d5 3. cxd5 Nxd5 4. Bg2 Nb6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d5 4. f3 Nd6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bh4 d5 4. Nd2 Nd6 *

[ECO "A45"]

1. d4 Nf6 2. e4 Nxe4 3. Nd2 d5 4. c3 Nd6 *

[ECO "B00"]

1. e4 Nc6 2. d4 d6 3. Nc3 Nf6 4. d5 Nb8 *

[ECO "E01"]

1. d4 e6 2. c4 Nf6 3. g3 d5 4. Bg2 Bb4+ *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d6 4. Nd2 Nf6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb4 4. d4 d6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. h4 d5 4. Nd2 Nf6 *

[ECO "B02"]

1. e4 Nf6 2. Bc4 Nxe4 3. d3 Nf6 4. Nf3 d5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bh4 d5 4. f3 Nf6 *

[ECO "A00"]

1. Nc3 d5 2. Nf3 Nf6 3. d4 Bf5 4. Nh4 Bc8 *

[ECO "A45"]

1. d4 Nf6 2. g3 d5 3. Nf3 Bf5 4. Nh4 Bc8 *

[ECO "A45"]

1. d4 Nf6 2. e4 Nxe4 3. Bd3 d5 4. Ne2 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. e4 Nxe4 3. d3 Nf6 4. d4 d5 *

[ECO "A45"]

1. d4 Nf6 2. e4 Nxe4 3. Nd2 Nf6 4. Ngf3 d5 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. e3 d5 *

[ECO "D06"]

1. d4 d5 2. c4 Nf6 3. cxd5 Nxd5 4. Nf3 Nf6 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. Nf3 Nf6 *

[ECO "A45"]

1. e4 d6 2. d4 Nf6 3. f3 d5 4. exd5 Nxd5 *

[ECO "B03"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. f4 dxe5 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 d6 3. Nc3 d5 4. Bg5 Ne4 *

[ECO "D03"]

1. d4 d5 2. Nf3 Nf6 3. Bg5 Ne4 4. e3 Nxg5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d5 4. Nd2 Nxd2 *

[ECO "A45"]

1. d4 Nf6 2. e4 Nxe4 3. Nf3 d5 4. Nc3 Nxc3 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d6 4. Qd3 d5 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 Nxc3 4. dxc3 d5 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Bg5 h6 4. Bh4 Bb4+ *

[ECO "D00"]

1. d4 d5 2. Bg5 Nf6 3. c4 Ne4 4. Nf3 dxc4 *

[ECO "D01"]

1. d4 Nf6 2. Bg5 d5 3. Nc3 Ne4 4. Nxe4 dxe4 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. c4 Nb4 *

[ECO "B01"]

1. e4 d5 2. Nc3 dxe4 3. d3 Nf6 4. Nxe4 Nxe4 *

[ECO "A05"]

1. Nf3 Nf6 2. e4 Nxe4 3. Nc3 d5 4. Nxe4 dxe4 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. g3 Nxc3 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. b4 d6 4. Bb2 e5 *

[ECO "A00"]

1. b4 e5 2. Bb2 d6 3. e3 Nf6 4. c4 g6 *

[ECO "A00"]

1. g3 e5 2. Bg2 Nf6 3. d3 g6 4. c4 d6 *

[ECO "A00"]

1. g3 e5 2. Bg2 d6 3. c4 g6 4. d4 Nf6 *

[ECO "C26"]

1. Nc3 e5 2. e4 Nf6 3. Nge2 Bc5 4. d4 exd4 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 e5 *

[ECO "C25"]

1. e4 e5 2. Nc3 d6 3. d4 Nf6 4. Nge2 g6 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. Bd3 e5 4. c3 g6 *

[ECO "A01"]

1. b3 d6 2. Bb2 e5 3. g3 Nf6 4. Bg2 g6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. c4 d6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. d4 g6 4. c4 e6 *

[ECO "A13"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 g6 *

[ECO "D82"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bf4 e6 *

[ECO "D06"]

1. d4 Nf6 2. c4 d5 3. e3 e6 4. Nf3 g6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Nbd2 g6 4. c4 e6 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 *

[ECO "E10"]

1. c4 e6 2. d4 Nf6 3. Nf3 d5 4. g3 b6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Nc3 g6 4. e4 d5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. e3 g6 4. Bd3 d5 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 d5 4. e3 e6 *

[ECO "A00"]

1. b4 g6 2. Nf3 Nf6 3. Nc3 d5 4. e3 e5 *

[ECO "A00"]

1. g3 d5 2. Bg2 e5 3. d3 g6 4. Nc3 Nf6 *

[ECO "A01"]

1. b3 Nf6 2. Bb2 g6 3. Bxf6 exf6 4. c4 d5 *

[ECO "D00"]

1. d4 d5 2. Bg5 g6 3. Nc3 Nf6 4. Bxf6 exf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. e3 d5 *

[ECO "D00"]

1. d4 d5 2. Bg5 g6 3. Nf3 Nf6 4. Bxf6 exf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. Nd2 g6 4. Bxf6 exf6 *

[ECO "A04"]

1. Nf3 e6 2. g3 d5 3. Bg2 Nf6 4. O-O b6 *

[ECO "C26"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 d6 4. Nf3 h6 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 h6 4. Nc3 d6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. Bg5 h6 4. Bxf6 exf6 *

[ECO "C11"]

1. d4 e6 2. e4 d5 3. Nc3 Nf6 4. Bg5 h6 *

[ECO "A40"]

1. d4 e6 2. h4 Nf6 3. Nc3 d5 4. h5 h6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Bg5 h6 4. Bh4 d5 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 h6 4. e3 d5 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. a3 d5 4. Nc3 h6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Nf6 3. e3 h6 4. Nc3 e6 *

[ECO "D00"]

1. d4 d5 2. Bg5 h6 3. Bf4 Nf6 4. Nc3 e6 *

[ECO "A23"]

1. c4 e5 2. g3 c6 3. Nc3 Nf6 4. d4 exd4 *

[ECO "D02"]

1. Nf3 Nf6 2. d4 d5 3. c3 e6 4. Bf4 h6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. e3 h6 4. Bh4 d5 *

[ECO "A45"]

1. d4 Nf6 2. h3 h6 3. Nc3 d5 4. Nf3 e6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. c3 h6 4. e3 e6 *

[ECO "A00"]

1. h3 h6 2. Nf3 Nf6 3. e3 e6 4. d4 d5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. e4 d5 4. e5 h6 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 h6 4. d3 d5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. e3 h6 4. Bxf6 exf6 *

[ECO "D00"]

1. d4 d5 2. Bg5 Nf6 3. Nd2 h6 4. Bxf6 exf6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. Bb2 e5 4. c4 e4 *

[ECO "B40"]

1. Nf3 c5 2. e4 e6 3. b3 Nf6 4. e5 Nd5 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. a3 d6 4. Nf3 e4 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. g3 e5 4. Nf3 e4 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. d4 exd4 4. Qxd4 Nf6 *

[ECO "A41"]

1. d4 d6 2. Nd2 e5 3. Ngf3 exd4 4. Nxd4 Nf6 *

[ECO "A41"]

1. d4 d6 2. g3 e5 3. Bg2 exd4 4. Qxd4 Nf6 *

[ECO "B00"]

1. e4 d6 2. Nc3 e5 3. d4 exd4 4. Qxd4 Nf6 *

[ECO "B07"]

1. d4 d6 2. e4 Nf6 3. Nc3 e5 4. Nge2 exd4 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 e5 4. Ne2 exd4 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. g3 Nf6 4. Nf3 e4 *

[ECO "A41"]

1. d4 d6 2. c4 e5 3. d5 Nf6 4. h3 Ne4 *

[ECO "A30"]

1. c4 c5 2. g3 Nf6 3. Bg2 d5 4. Nf3 dxc4 *

[ECO "A52"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Qd4 d6 *

[ECO "C00"]

1. e4 e6 2. Qe2 Nf6 3. e5 Nd5 4. d4 d6 *

[ECO "C00"]

1. e4 e6 2. Nf3 d5 3. e5 Ne7 4. b4 Ng6 *

[ECO "C00"]

1. e4 e6 2. d4 d5 3. Bd3 Nf6 4. exd5 Nxd5 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. Bf4 Nf6 4. Nbd2 Nh5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 Nh5 4. Bd2 e6 *

[ECO "E10"]

1. d4 e6 2. c4 Nf6 3. Nf3 Ne4 4. Qd3 d5 *

[ECO "E10"]

1. c4 e6 2. d4 Nf6 3. Nf3 Ne4 4. Qc2 d5 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 d5 3. e5 Ne4 4. Nce2 e6 *

[ECO "D37"]

1. d4 Nf6 2. c4 e6 3. Nc3 d6 4. Nf3 d5 *

[ECO "D50"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 c6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Nc3 d6 4. e4 d5 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 e6 4. c4 d5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. h3 d5 4. Bf4 e6 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e4 e6 4. Bxc4 Nf6 *

[ECO "A13"]

1. c4 e6 2. b3 d5 3. Bb2 dxc4 4. bxc4 Nf6 *

[ECO "C00"]

1. e4 e6 2. d4 d5 3. c4 dxe4 4. Ne2 Nf6 *

[ECO "A17"]

1. c4 Nf6 2. Nc3 e6 3. b3 d5 4. e3 d4 *

[ECO "A13"]

1. c4 e6 2. Nc3 d5 3. e3 Nf6 4. Nf3 dxc4 *

[ECO "A17"]

1. c4 e6 2. Nc3 Nf6 3. g3 d5 4. Bg2 dxc4 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. g3 e6 4. e3 Nf6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. b3 d6 4. Bb2 Nf6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 Nf6 4. e3 e6 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. a3 dxc4 4. e3 Nf6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. a3 d5 4. Nf3 dxc4 *

[ECO "D30"]

1. d4 e6 2. c4 d5 3. Nf3 dxc4 4. e4 Nf6 *

[ECO "C11"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Be3 dxe4 *

[ECO "C11"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Qd3 dxe4 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 4. Nc3 d4 *

[ECO "C00"]

1. e4 e6 2. Nc3 d5 3. g3 Nf6 4. Bg2 d4 *

[ECO "C00"]

1. e4 e6 2. g3 d5 3. Bg2 dxe4 4. Bxe4 Nf6 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 Nf6 4. g3 dxe4 *

[ECO "A00"]

1. b4 e5 2. b5 d5 3. Bb2 e4 4. c4 Nf6 *

[ECO "A00"]

1. b4 e5 2. b5 d5 3. Bb2 e4 4. Nc3 Nf6 *

[ECO "A00"]

1. b4 e5 2. b5 d5 3. Bb2 e4 4. e3 Nf6 *

[ECO "C29"]

1. e4 Nf6 2. Nc3 e5 3. f4 d5 4. exd5 exf4 *

[ECO "C43"]

1. e4 e5 2. Nf3 Nf6 3. d4 d5 4. Bg5 exd4 *

[ECO "A00"]

1. b4 e6 2. a3 Nf6 3. c4 d5 4. cxd5 exd5 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 Nf6 4. d3 d5 *

[ECO "A00"]

1. h3 e5 2. d4 exd4 3. Nf3 Nf6 4. Nxd4 d5 *

[ECO "A00"]

1. g3 e5 2. Bg2 Nf6 3. Nf3 e4 4. Nd4 d5 *

[ECO "A04"]

1. Nf3 e5 2. Nxe5 d6 3. Nf3 d5 4. d4 Nf6 *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Nf6 *

[ECO "C05"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. exd5 exd5 *

[ECO "A00"]

1. e3 e5 2. a3 Nf6 3. d4 exd4 4. exd4 d5 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. Nf3 d5 4. Qxd4 Nf6 *

[ECO "A18"]

1. c4 Nf6 2. Nc3 e6 3. e4 d5 4. cxd5 exd5 *

[ECO "C34"]

1. e4 e5 2. f4 exf4 3. Nf3 Nf6 4. d3 d5 *

[ECO "A00"]

1. h3 d5 2. b3 e5 3. e3 Nf6 4. Nf3 e4 *

[ECO "A13"]

1. c4 e6 2. f4 d5 3. cxd5 exd5 4. Nf3 Nf6 *

[ECO "C00"]

1. e4 e6 2. b3 d5 3. Bb2 Nf6 4. exd5 exd5 *

[ECO "A13"]

1. c4 e6 2. Nc3 d5 3. cxd5 exd5 4. e3 Nf6 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. cxd5 exd5 4. g3 Nf6 *

[ECO "A04"]

1. Nf3 e5 2. Nxe5 d6 3. Nf3 d5 4. a3 Nf6 *

[ECO "A00"]

1. a4 e5 2. d4 exd4 3. Nf3 d5 4. Nxd4 Nf6 *

[ECO "A20"]

1. c4 e5 2. e3 d6 3. Nc3 Nf6 4. d3 d5 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. a3 d6 4. e3 d5 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 Nf6 4. g3 e5 *

[ECO "A00"]

1. g3 e5 2. c4 Nf6 3. Nf3 d5 4. Nxe5 d4 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. d3 d5 4. Bg5 d4 *

[ECO "C43"]

1. e4 e5 2. Nf3 Nf6 3. d4 d5 4. Bg5 dxe4 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. O-O Bd7 *

[ECO "B04"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 e6 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. c3 Nf6 4. c4 d4 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. c4 d4 4. Na3 Nf6 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. Nd2 e5 4. dxe5 dxe5 *

[ECO "A41"]

1. d4 d6 2. Bg5 Nf6 3. Bxf6 exf6 4. Nf3 d5 *

[ECO "A00"]

1. Nc3 d5 2. e4 dxe4 3. Nxe4 Nf6 4. Nxf6+ exf6 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 d5 4. exd5 Nxd5 *

[ECO "A22"]

1. c4 e5 2. g3 Nf6 3. Nc3 d5 4. cxd5 Nxd5 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nxe4 4. Bc4 d5 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nxe4 4. Qe2 d5 *

[ECO "C27"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 Nxe4 4. Qg4 d5 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 Ne4 *

[ECO "C27"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Nf3 d5 *

[ECO "A41"]

1. c4 d6 2. d4 e5 3. d5 f5 4. e3 Nf6 *

[ECO "A86"]

1. c4 f5 2. g3 Nf6 3. d4 d6 4. d5 e5 *

[ECO "A20"]

1. c4 e5 2. e3 d6 3. Nc3 f5 4. b4 Nf6 *

[ECO "A00"]

1. b4 e5 2. Bb2 d6 3. c4 f5 4. e3 Nf6 *

[ECO "A00"]

1. b4 e5 2. Bb2 d6 3. c4 f5 4. Nf3 Nf6 *

[ECO "A20"]

1. c4 e5 2. e3 d6 3. Nc3 f5 4. Be2 Nf6 *

[ECO "A21"]

1. c4 e5 2. Nf3 d6 3. Nc3 f5 4. g3 Nf6 *

[ECO "A00"]

1. g3 f5 2. Bg2 Nf6 3. d3 e5 4. c4 d6 *

[ECO "A00"]

1. g3 e5 2. Nf3 d6 3. Bg2 f5 4. c4 Nf6 *

[ECO "C40"]

1. e4 e5 2. Nf3 d5 3. exd5 e4 4. Qe2 Nf6 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. Bg2 Nf6 4. a3 d6 *

[ECO "A80"]

1. d4 f5 2. Nf3 d6 3. c4 Nf6 4. b3 e5 *

[ECO "A04"]

1. Nf3 f5 2. d3 d6 3. e4 e5 4. Nc3 Nf6 *

[ECO "A04"]

1. Nf3 f5 2. d3 d6 3. e4 e5 4. g3 Nf6 *

[ECO "A00"]

1. g3 e5 2. Nf3 d6 3. d3 f5 4. Bg2 Nf6 *

[ECO "A00"]

1. g3 e5 2. Nf3 d6 3. Bg2 f5 4. O-O Nf6 *

[ECO "A90"]

1. d4 e6 2. g3 f5 3. c4 Nf6 4. Bg2 d6 *

[ECO "A80"]

1. d4 f5 2. Nf3 d6 3. c3 e6 4. Bf4 Nf6 *

[ECO "C26"]

1. e4 e5 2. Nc3 Nf6 3. g3 d5 4. exd5 Nxd5 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. Bf4 Nf6 4. e3 d6 *

[ECO "A81"]

1. d4 f5 2. g3 d6 3. Bg2 Nf6 4. b3 e6 *

[ECO "A80"]

1. d4 f5 2. Qd3 d6 3. Qb3 Nf6 4. Nc3 e6 *

[ECO "A80"]

1. d4 f5 2. Nf3 d6 3. c3 Nf6 4. Qb3 e6 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 d6 4. Nc3 e6 *

[ECO "A80"]

1. d4 f5 2. Qd3 d6 3. Nf3 Nf6 4. Nc3 e6 *

[ECO "A80"]

1. d4 f5 2. Nf3 d6 3. c3 e6 4. e3 Nf6 *

[ECO "A40"]

1. d4 e6 2. g3 f5 3. Bg2 Nf6 4. c3 d6 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 d6 4. Nh3 e6 *

[ECO "A01"]

1. b3 f5 2. Bb2 d6 3. f4 e6 4. Nf3 Nf6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Ne4 3. d3 Nc5 4. d4 Nca6 *

[ECO "A85"]

1. d4 f5 2. c4 Nf6 3. Nc3 d6 4. Bg5 e6 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. d5 Nf6 4. dxe6 d5 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. b3 f5 4. Bb2 Nf6 *

[ECO "A13"]

1. c4 e6 2. Nf3 f5 3. Nc3 Nf6 4. Qc2 d5 *

[ECO "A13"]

1. c4 e6 2. Nf3 f5 3. Nc3 Nf6 4. g3 d5 *

[ECO "A13"]

1. c4 e6 2. g3 f5 3. Nc3 Nf6 4. Bg2 d5 *

[ECO "A04"]

1. Nf3 f5 2. g3 Nf6 3. c4 e6 4. Bg2 d5 *

[ECO "D30"]

1. c4 e6 2. d4 d5 3. Nf3 f5 4. Bf4 Nf6 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. e3 Nf6 4. Nc3 d5 *

[ECO "A84"]

1. c4 e6 2. d4 f5 3. Nc3 Nf6 4. Qc2 d5 *

[ECO "A19"]

1. c4 Nf6 2. Nc3 e6 3. e4 c5 4. e5 Ng8 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. h3 d5 4. c4 e6 *

[ECO "D02"]

1. d4 d5 2. Nf3 f5 3. Bf4 e6 4. e3 Nf6 *

[ECO "A00"]

1. g3 f5 2. Nc3 Nf6 3. Nf3 e6 4. d4 d5 *

[ECO "A00"]

1. g3 f5 2. Nc3 Nf6 3. d4 e6 4. Bg2 d5 *

[ECO "A80"]

1. d4 f5 2. Qd3 e6 3. Nc3 d5 4. Qg3 Nf6 *

[ECO "A04"]

1. Nf3 f5 2. e3 Nf6 3. d4 e6 4. Be2 d5 *

[ECO "A04"]

1. Nf3 f5 2. d3 Nf6 3. Nc3 d5 4. Bf4 e6 *

[ECO "A04"]

1. Nf3 f5 2. b3 e6 3. e3 Nf6 4. Bb2 d5 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. Nf3 f5 4. Bg5 Nf6 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. c3 Nf6 4. Bg5 d5 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. Nf3 c6 4. Nbd2 dxc4 *

[ECO "A80"]

1. d4 f5 2. c3 Nf6 3. Bg5 e6 4. Nd2 d5 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. Bg5 Nf6 4. e3 d5 *

[ECO "A40"]

1. d4 e6 2. g3 f5 3. Nf3 Nf6 4. Bg5 d5 *

[ECO "A54"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 d6 4. d4 Nfd7 *

[ECO "C00"]

1. e4 e6 2. d4 d5 3. Bd3 Nf6 4. e5 Nfd7 *

[ECO "C00"]

1. e4 e6 2. Qe2 Nf6 3. d4 d5 4. e5 Nfd7 *

[ECO "C00"]

1. e4 e6 2. Nc3 d5 3. f4 Nf6 4. e5 Nfd7 *

[ECO "C00"]

1. e4 e6 2. Nc3 d5 3. b3 Nf6 4. e5 Nfd7 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 Nf6 4. e5 Nfd7 *

[ECO "B06"]

1. e4 g6 2. Bc4 Nf6 3. e5 d5 4. Bb3 Nfd7 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 g6 3. e4 e6 4. e5 Nh5 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Qg4 g5 4. h4 Nf6 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 g6 4. d4 exd4 *

[ECO "A10"]

1. c4 g6 2. e4 e5 3. d4 Nf6 4. dxe5 Nxe4 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. f3 Nh5 4. e4 e5 *

[ECO "A10"]

1. c4 g6 2. e4 e5 3. d4 Nf6 4. Nf3 Nxe4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. h4 f5 *

[ECO "A40"]

1. d4 e6 2. c3 Nf6 3. Bg5 h6 4. Bxf6 gxf6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. d3 g6 4. Bg5 h6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 g6 3. Nc3 h6 4. Bxf6 exf6 *

[ECO "C02"]

1. e4 c6 2. d4 d5 3. e5 e6 4. Nf3 c5 *

[ECO "C00"]

1. e4 e6 2. d4 h6 3. Nf3 Nf6 4. e5 Nd5 *

[ECO "A45"]

1. d4 Nf6 2. Bf4 e6 3. e3 Nd5 4. Bg3 h5 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 e6 4. Bc4 Nb6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 Nb6 4. a4 e6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. b3 e6 4. c4 Nb4 *

[ECO "B02"]

1. e4 Nf6 2. Bc4 Nxe4 3. Nc3 Nxc3 4. dxc3 e6 *

[ECO "E10"]

1. Nf3 Nf6 2. c4 e6 3. d4 Ne4 4. Bd2 Nxd2 *

[ECO "A45"]

1. d4 Nf6 2. e4 Nxe4 3. Nc3 Nxc3 4. bxc3 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. e4 Nxe4 3. Be2 e6 4. d3 Nf6 *

[ECO "A40"]

1. d4 Nc6 2. c4 e5 3. d5 Nb8 4. a3 Nf6 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. Nc3 Nc6 *

[ECO "A00"]

1. a4 e5 2. e4 Nf6 3. Nf3 Nxe4 4. d3 Nf6 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 Ne7 4. Nc3 Ng6 *

[ECO "A51"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nd2 Nc5 *

[ECO "A52"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. a3 Nxe5 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bf4 Nf6 4. Nc3 e6 *

[ECO "A84"]

1. c4 e6 2. d4 f5 3. Nc3 Nf6 4. Bg5 h6 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. c3 Nf6 4. Bg5 h6 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. Bg5 Nf6 4. e3 h6 *

[ECO "A80"]

1. d4 f5 2. c3 Nf6 3. Nf3 e6 4. Bf4 Nd5 *

[ECO "A13"]

1. c4 e6 2. Nf3 f5 3. Nc3 Nf6 4. d4 Ne4 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. c4 g6 4. Nc3 Bf5 *

[ECO "B23"]

1. e4 c5 2. Ne2 Nc6 3. Nbc3 g6 4. g3 Bg7 *

[ECO "A82"]

1. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. Bf4 e6 *

[ECO "A04"]

1. Nf3 f5 2. d3 Nf6 3. e4 e5 4. Nxe5 fxe4 *

[ECO "A04"]

1. Nf3 f5 2. e4 fxe4 3. Ng5 Nf6 4. d3 e5 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. Bg2 Nf6 4. Nf3 e4 *

[ECO "A10"]

1. c4 f5 2. Nc3 e5 3. e3 Nf6 4. d4 exd4 *

[ECO "A00"]

1. h3 e5 2. c3 f5 3. d4 e4 4. Bf4 Nf6 *

[ECO "A10"]

1. c4 f5 2. Nf3 Nf6 3. g3 g6 4. b4 e6 *

[ECO "A10"]

1. c4 f5 2. g3 Nf6 3. Bg2 g6 4. b4 e6 *

[ECO "A85"]

1. c4 f5 2. d4 Nf6 3. Nc3 g6 4. f3 e6 *

[ECO "A13"]

1. c4 e6 2. g3 f5 3. d4 Nf6 4. Nf3 g6 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. g3 Bg7 4. Bg2 Nc6 *

[ECO "A80"]

1. d4 f5 2. Nc3 g6 3. Nf3 Nf6 4. Bf4 e6 *

[ECO "A80"]

1. d4 f5 2. Nf3 g6 3. b3 Nf6 4. e3 e6 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nh3 e6 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nc3 Nf6 4. e3 e6 *

[ECO "A04"]

1. Nf3 f5 2. e4 fxe4 3. Ng5 Nf6 4. d3 e3 *

[ECO "A04"]

1. Nf3 f5 2. d3 Nf6 3. e4 fxe4 4. dxe4 Nxe4 *

[ECO "A00"]

1. g3 g6 2. d4 f5 3. h4 Nf6 4. h5 gxh5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 g5 4. Be5 f6 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Nh5 4. Be5 f6 *

[ECO "A84"]

1. d4 f5 2. c4 g6 3. h4 Nf6 4. h5 Nxh5 *

[ECO "C64"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. Bxc6 dxc6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 g6 3. e4 Nxe4 4. d4 f5 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bf4 g5 4. Be5 Nf6 *

[ECO "B00"]

1. e4 f5 2. exf5 Nf6 3. Be2 g6 4. fxg6 hxg6 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nc3 h6 4. Bf4 Nf6 *

[ECO "A80"]

1. d4 f5 2. Nf3 g6 3. Bf4 Nf6 4. e3 h6 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nc3 h6 4. Bd2 Nf6 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. Bg5 g6 4. Nbd2 h6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. e4 Nxe4 4. d3 Nd6 *

[ECO "A40"]

1. d4 g6 2. e4 Nf6 3. e5 Nd5 4. c4 Nb4 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. e4 Nxe4 4. Nc3 Nxc3 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. c4 Nc6 4. Nf3 e5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bh4 g5 4. f3 gxh4 *

[ECO "B06"]

1. e4 g6 2. h4 h5 3. Bc4 Nf6 4. e5 Ng4 *

[ECO "B06"]

1. e4 g6 2. h4 h5 3. Bc4 Nf6 4. Nc3 Nxe4 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Nh5 4. Bg5 h6 *

[ECO "B00"]

1. e4 h6 2. d4 Nf6 3. e5 Nd5 4. c4 Nb4 *

[ECO "A00"]

1. g3 d5 2. f4 h5 3. Nf3 h4 4. Nxh4 Rxh4 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bh4 g5 4. e4 Rh7 *

[ECO "A00"]

1. b4 c6 2. e3 e5 3. a3 a5 4. Bb2 axb4 *

[ECO "A43"]

1. d4 c5 2. d5 e6 3. Nc3 a6 4. a4 exd5 *

[ECO "B20"]

1. e4 c5 2. Ne2 a6 3. d4 cxd4 4. Nxd4 e5 *

[ECO "E40"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Nc6 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. c3 g6 4. d4 cxd4 *

[ECO "A00"]

1. Nc3 d5 2. Nf3 d4 3. Nb5 c5 4. e3 a6 *

[ECO "A07"]

1. Nf3 d5 2. g3 c5 3. c4 dxc4 4. e3 a6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. e5 d5 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. Be2 d6 4. Nc3 e5 *

[ECO "A44"]

1. d4 c5 2. d5 e5 3. e4 d6 4. Nc3 a6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Bc4 e6 4. O-O a6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Bc4 e6 4. Qe2 a6 *

[ECO "A30"]

1. c4 c5 2. Nf3 e6 3. e4 a6 4. Nc3 d6 *

[ECO "B20"]

1. e4 c5 2. Ne2 a6 3. Nbc3 e6 4. d4 d6 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bc4 Nf6 *

[ECO "B22"]

1. e4 c5 2. c3 a6 3. d4 e6 4. f4 d6 *

[ECO "B20"]

1. e4 c5 2. Ne2 e6 3. Nbc3 a6 4. g3 d6 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. f4 e6 4. Be2 d5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. a4 d5 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 f6 4. a3 a5 *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. e4 dxe4 4. Bf4 a6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 g6 4. e4 a6 *

[ECO "C00"]

1. e4 e6 2. Nc3 d5 3. g3 d4 4. Nb5 a6 *

[ECO "D31"]

1. d4 d5 2. c4 e6 3. Nc3 dxc4 4. e3 a6 *

[ECO "A00"]

1. Nc3 d5 2. Nf3 d4 3. Nb5 e5 4. Nxe5 a6 *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. Bf4 a6 4. h4 e6 *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. Bf4 a6 4. Nh3 e6 *

[ECO "A40"]

1. d4 e6 2. c4 e5 3. f4 g6 4. Nc3 a6 *

[ECO "A00"]

1. b4 e5 2. b5 a6 3. Bb2 axb5 4. e3 b4 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 a6 4. e3 b5 *

[ECO "B00"]

1. e4 a6 2. Nc3 b5 3. a3 e5 4. Nf3 d6 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. g3 b5 4. Bf4 a6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. c4 a6 4. c5 b6 *

[ECO "A04"]

1. Nf3 b5 2. e3 a6 3. d4 e6 4. a4 b4 *

[ECO "B20"]

1. e4 c5 2. Bc4 e6 3. Nf3 a6 4. O-O b5 *

[ECO "D37"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 Nc6 *

[ECO "B20"]

1. e4 c5 2. Bc4 e6 3. Nc3 a6 4. a3 b5 *

[ECO "B22"]

1. e4 c5 2. c3 e6 3. Nf3 a6 4. d4 b5 *

[ECO "C00"]

1. d4 e6 2. e4 a6 3. Nf3 b5 4. Bd3 c5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 b5 4. d4 a6 *

[ECO "B40"]

1. e4 e6 2. Nf3 c5 3. g3 a6 4. Bg2 b5 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. f4 e6 4. Nf3 b5 *

[ECO "C00"]

1. c4 e6 2. e4 c5 3. Nc3 a6 4. g3 b6 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. Nf3 b5 4. a4 b4 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. c4 b6 4. d4 cxd4 *

[ECO "B23"]

1. Nc3 c5 2. e4 d6 3. Bc4 a6 4. Nf3 b5 *

[ECO "C28"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Nc6 4. d3 d6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Bc4 a6 4. Bb3 b5 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. f4 b5 4. Nf3 d6 *

[ECO "A07"]

1. g3 d5 2. Nf3 g6 3. c4 dxc4 4. e4 b5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. a3 g6 4. e4 d5 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. g3 dxc4 4. Na3 b6 *

[ECO "D31"]

1. c4 e6 2. d4 b6 3. Nc3 d5 4. Nf3 dxc4 *

[ECO "C00"]

1. e4 e6 2. d3 b6 3. Nc3 d5 4. Nf3 d4 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 b6 4. Nf3 d4 *

[ECO "A04"]

1. Nf3 e6 2. d4 b6 3. e4 d5 4. exd5 exd5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. e4 d5 4. cxd5 exd5 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 h6 4. Bc4 Nf6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 e6 4. Nxc4 b5 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. g3 e6 4. e3 b5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Bf4 g5 4. Bc1 h6 *

[ECO "A00"]

1. g3 g6 2. Nf3 c5 3. c3 b6 4. Bg2 e6 *

[ECO "A40"]

1. c4 e6 2. d4 b6 3. a3 c5 4. Nf3 cxd4 *

[ECO "B23"]

1. e4 c5 2. Nc3 b6 3. Nf3 e6 4. d4 cxd4 *

[ECO "A40"]

1. c4 b6 2. d4 e6 3. a3 c5 4. d5 e5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 b5 4. d4 cxd4 *

[ECO "A40"]

1. d4 g6 2. c4 c5 3. d5 b5 4. cxb5 f5 *

[ECO "B06"]

1. e4 g6 2. h4 h5 3. Bc4 c6 4. Nc3 b5 *

[ECO "A34"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 d5 4. cxd5 Nxd5 *

[ECO "A52"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 Nc6 *

[ECO "B10"]

1. e4 c6 2. Nf3 g6 3. d4 d5 4. e5 b6 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. Nc3 c6 4. Be3 b5 *

[ECO "B10"]

1. e4 c6 2. Nc3 g6 3. d4 d6 4. g3 b5 *

[ECO "B10"]

1. e4 c6 2. Nc3 b5 3. a3 d6 4. Nf3 g6 *

[ECO "A04"]

1. Nf3 c5 2. b3 d6 3. d4 cxd4 4. Nxd4 b6 *

[ECO "D21"]

1. d4 d5 2. c4 dxc4 3. Nf3 c6 4. Ne5 b5 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 c6 4. Nxc4 b5 *

[ECO "A11"]

1. c4 c6 2. Nf3 d5 3. Qc2 dxc4 4. e3 b5 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. Nc3 dxc4 4. e4 b5 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e4 c5 4. d5 b5 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 d6 4. Bc4 a6 *

[ECO "A34"]

1. c4 c5 2. Nc3 b6 3. e4 d6 4. Nf3 e5 *

[ECO "C00"]

1. e4 e6 2. f4 c5 3. d3 d5 4. Nd2 b6 *

[ECO "C02"]

1. d4 e6 2. e4 d5 3. e5 b6 4. Qh5 c5 *

[ECO "C02"]

1. d4 e6 2. e4 d5 3. e5 b6 4. Nc3 c5 *

[ECO "B22"]

1. e4 c5 2. c3 e6 3. Nf3 d5 4. e5 b6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 b6 4. Nc3 e6 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. g3 c6 4. b3 b5 *

[ECO "C00"]

1. e4 e6 2. Bb5 c6 3. Ba4 d5 4. Nc3 b5 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. Nh3 Nf6 4. e5 Ng8 *

[ECO "C00"]

1. e4 e6 2. Qe2 e5 3. c3 c5 4. d4 cxd4 *

[ECO "D30"]

1. d4 e6 2. c4 d5 3. Nf3 c6 4. Qc2 Nd7 *

[ECO "A00"]

1. a3 e5 2. Nf3 e4 3. Nd4 c5 4. Nb3 c4 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. g3 c5 4. d5 exd5 *

[ECO "A43"]

1. d4 c5 2. d5 g6 3. c4 f5 4. e4 fxe4 *

[ECO "A84"]

1. d4 f5 2. c4 g6 3. g3 c5 4. Nf3 cxd4 *

[ECO "B10"]

1. e4 c6 2. Nf3 g6 3. c4 c5 4. d4 cxd4 *

[ECO "B21"]

1. e4 c5 2. d4 cxd4 3. c3 d3 4. Bxd3 g6 *

[ECO "B20"]

1. e4 c5 2. a3 g6 3. d4 cxd4 4. c3 d3 *

[ECO "B20"]

1. e4 c5 2. b4 cxb4 3. a3 bxa3 4. Nc3 a2 *

[ECO "A80"]

1. d4 f5 2. Bg5 c6 3. c4 d6 4. Nf3 h6 *

[ECO "A80"]

1. d4 f5 2. Bg5 d6 3. e3 c6 4. Nc3 h6 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Bf4 Nc6 *

[ECO "B10"]

1. e4 c6 2. c4 d5 3. e5 d4 4. Nf3 f6 *

[ECO "A80"]

1. d4 f5 2. Nf3 d6 3. Nc3 d5 4. Bf4 c6 *

[ECO "B10"]

1. e4 c6 2. Ne2 d5 3. e5 f6 4. d4 fxe5 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 c5 4. e3 f6 *

[ECO "A06"]

1. Nf3 d5 2. b3 c5 3. Bb2 f6 4. c4 d4 *

[ECO "A08"]

1. g3 d5 2. Nf3 c5 3. Bg2 f6 4. c4 dxc4 *

[ECO "D00"]

1. d4 d5 2. Bg5 f6 3. Bh4 c5 4. e4 dxe4 *

[ECO "A06"]

1. Nf3 d5 2. b3 c5 3. Bb2 f6 4. e4 dxe4 *

[ECO "A08"]

1. g3 d5 2. Nf3 c5 3. Bg2 f6 4. d4 cxd4 *

[ECO "B13"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c3 Nc6 *

[ECO "A80"]

1. d4 f5 2. g4 d5 3. g5 c5 4. Nf3 cxd4 *

[ECO "D00"]

1. d4 d5 2. Bg5 g6 3. Nc3 f6 4. Bf4 c6 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 g6 4. e5 f6 *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. Bg5 g6 4. Qd2 c6 *

[ECO "B10"]

1. e4 c6 2. c4 g6 3. d4 d5 4. Nc3 dxe4 *

[ECO "A09"]

1. Nf3 d5 2. c4 c6 3. g3 g6 4. Bg2 dxc4 *

[ECO "A07"]

1. Nf3 d5 2. g3 g6 3. c4 c6 4. d4 dxc4 *

[ECO "B15"]

1. e4 c6 2. Nc3 d5 3. d4 g6 4. Be3 dxe4 *

[ECO "B06"]

1. e4 g6 2. d4 c6 3. Bd3 d5 4. Nc3 dxe4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. Nd2 g6 4. Ngf3 dxe4 *

[ECO "C63"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. Nc3 fxe4 *

[ECO "A00"]

1. g3 d5 2. Bg2 g6 3. c4 dxc4 4. Qa4+ c6 *

[ECO "A11"]

1. c4 c6 2. Nf3 g6 3. e4 c5 4. Qb3 d6 *

[ECO "A04"]

1. Nf3 c5 2. c4 g6 3. e4 d6 4. d4 cxd4 *

[ECO "A04"]

1. Nf3 d6 2. g3 g6 3. Nc3 c5 4. d4 cxd4 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. Nc3 g6 4. d4 cxd4 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 g6 4. d4 cxd4 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. g3 c5 4. e3 g6 *

[ECO "A40"]

1. d4 g6 2. e4 d6 3. f4 c5 4. dxc5 dxc5 *

[ECO "B12"]

1. e4 c6 2. d4 g6 3. f4 d5 4. e5 c5 *

[ECO "B12"]

1. e4 c6 2. d4 g6 3. f4 d5 4. exd5 cxd5 *

[ECO "C63"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. d3 fxe4 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. Nc3 g6 4. cxd5 cxd5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. Nd2 g6 4. exd5 cxd5 *

[ECO "B22"]

1. e4 c5 2. c3 g6 3. d4 cxd4 4. cxd4 d5 *

[ECO "B10"]

1. e4 c6 2. c4 g6 3. Nc3 d5 4. cxd5 cxd5 *

[ECO "B06"]

1. e4 g6 2. Nc3 c6 3. Nf3 d5 4. exd5 cxd5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 g6 4. c3 h5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 g6 4. Be3 h5 *

[ECO "D11"]

1. d4 d5 2. Nf3 c6 3. c4 h6 4. cxd5 cxd5 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. d4 c6 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. Nc3 d4 4. Ne2 d3 *

[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. a4 Nc6 *

[ECO "B10"]

1. e4 c6 2. Nc3 d6 3. f4 d5 4. d3 dxe4 *

[ECO "B21"]

1. e4 c5 2. d4 cxd4 3. c3 d3 4. Bxd3 d6 *

[ECO "B10"]

1. e4 c6 2. e5 d5 3. Nf3 d4 4. Be2 c5 *

[ECO "B10"]

1. e4 c6 2. Nc3 d5 3. g3 d4 4. Nce2 c5 *

[ECO "D21"]

1. d4 d5 2. c4 dxc4 3. Nf3 c6 4. a4 c5 *

[ECO "B54"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 d5 *

[ECO "A06"]

1. Nf3 d5 2. h3 c5 3. d4 cxd4 4. c3 dxc3 *

[ECO "A43"]

1. d4 c5 2. Nf3 cxd4 3. Nxd4 d5 4. e4 dxe4 *

[ECO "D00"]

1. d4 d5 2. Bf4 c5 3. e4 dxe4 4. Nc3 cxd4 *

[ECO "D00"]

1. d4 d5 2. Bf4 c5 3. e4 dxe4 4. Na3 cxd4 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. g3 Bb7 4. Nf3 Bb4+ *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 g6 4. e5 e6 *

[ECO "A04"]

1. Nf3 c5 2. b3 d6 3. e3 e5 4. c4 g6 *

[ECO "A43"]

1. d4 c5 2. d5 d6 3. c4 e5 4. e4 g6 *

[ECO "C00"]

1. e4 e6 2. f4 c5 3. d3 d5 4. Be2 g6 *

[ECO "D11"]

1. d4 d5 2. c4 c6 3. Nf3 h6 4. e3 e6 *

[ECO "B20"]

1. e4 c5 2. Ne2 d6 3. g3 h5 4. h3 e5 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 h6 4. Bd3 c5 *

[ECO "C00"]

1. e4 e6 2. f4 d5 3. e5 c5 4. Nf3 h5 *

[ECO "B10"]

1. e4 c6 2. e5 d5 3. Nf3 d4 4. Bc4 e6 *

[ECO "B10"]

1. e4 c6 2. c4 e6 3. d4 d5 4. e5 dxc4 *

[ECO "B10"]

1. e4 c6 2. c4 e6 3. Nc3 d5 4. Nf3 d4 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. e3 c6 4. Nc3 dxc4 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. g3 dxc4 4. Qa4+ c6 *

[ECO "A40"]

1. d4 e6 2. g3 d5 3. c4 dxc4 4. Qa4+ c6 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 d5 4. Bxd5 c6 *

[ECO "A00"]

1. b4 c6 2. e3 e5 3. Bb2 e4 4. f3 d5 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 c6 4. Nc3 d5 *

[ECO "A11"]

1. c4 c6 2. g3 d5 3. Qc2 e5 4. Nf3 e4 *

[ECO "D10"]

1. c4 e5 2. Nc3 c6 3. d4 d5 4. e3 e4 *

[ECO "A20"]

1. c4 e5 2. g3 c6 3. d4 e4 4. Nc3 d5 *

[ECO "D11"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bg4 *

[ECO "E12"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Bg5 Bb7 *

[ECO "A20"]

1. c4 e5 2. g3 c6 3. d4 e4 4. Bg2 d5 *

[ECO "A20"]

1. c3 e5 2. c4 c6 3. d4 exd4 4. Qxd4 d5 *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 c6 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. cxd5 exd5 4. d4 c6 *

[ECO "B10"]

1. e4 c6 2. c4 e6 3. d4 d5 4. cxd5 exd5 *

[ECO "B10"]

1. e4 c6 2. d3 e5 3. d4 exd4 4. Qxd4 d5 *

[ECO "B10"]

1. e4 c6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 *

[ECO "B10"]

1. e4 c6 2. d3 e5 3. f4 exf4 4. Bxf4 d5 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. cxd5 exd5 4. Bg2 c6 *

[ECO "A20"]

1. c4 e5 2. g3 c6 3. d4 d6 4. dxe5 dxe5 *

[ECO "A17"]

1. c4 e6 2. Nf3 Nf6 3. Nc3 b6 4. g3 Bb7 *

[ECO "A20"]

1. c4 e5 2. g3 c6 3. b3 d5 4. Bb2 dxc4 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. Nc3 e5 4. e3 dxc4 *

[ECO "A20"]

1. c4 e5 2. g3 c6 3. Nf3 d6 4. d4 e4 *

[ECO "B10"]

1. e4 c6 2. c4 d6 3. d4 e5 4. Nf3 exd4 *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. Nf3 d6 4. Nc3 c5 *

[ECO "A04"]

1. Nf3 d6 2. g3 e5 3. Bg2 e4 4. Nd4 c5 *

[ECO "A40"]

1. d4 e6 2. c4 c5 3. d5 d6 4. e4 exd5 *

[ECO "C00"]

1. e4 e6 2. Nc3 c5 3. Nge2 d6 4. d4 cxd4 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c3 e6 4. d4 cxd4 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. e4 Nf6 4. Nc3 Bb7 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. g3 c5 4. Ne5 e6 *

[ECO "C00"]

1. e4 e6 2. Nf3 d5 3. e5 d4 4. Bc4 c5 *

[ECO "C00"]

1. e4 e6 2. d4 d5 3. c4 dxe4 4. Nc3 c5 *

[ECO "A13"]

1. c4 e6 2. Nc3 c5 3. g3 d5 4. Bg2 d4 *

[ECO "A30"]

1. c4 c5 2. Nf3 e6 3. g3 d5 4. Bg2 d4 *

[ECO "D30"]

1. d4 e6 2. c4 d5 3. g3 c5 4. Nf3 dxc4 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. c4 dxc4 4. e4 c5 *

[ECO "C07"]

1. d4 e6 2. e4 d5 3. Nd2 c5 4. c3 dxe4 *

[ECO "C00"]

1. e4 e6 2. Nf3 d5 3. Nc3 d4 4. Ne2 c5 *

[ECO "A00"]

1. Nc3 c5 2. Ne4 e6 3. Ng3 d5 4. e4 dxe4 *

[ECO "D25"]

1. d4 d5 2. c4 dxc4 3. e3 Be6 4. Nf3 Nf6 *

[ECO "B21"]

1. e4 c5 2. f4 e6 3. d3 d5 4. Nf3 dxe4 *

[ECO "B21"]

1. e4 c5 2. f4 e6 3. d3 d5 4. Be2 dxe4 *

[ECO "A13"]

1. c4 e6 2. Nc3 d5 3. b3 d4 4. Na4 c5 *

[ECO "A13"]

1. Nf3 d5 2. g3 c6 3. c4 e6 4. b3 c5 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. Nd2 e6 4. Ngf3 c5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 c5 4. Nc3 e6 *

[ECO "C02"]

1. e4 c6 2. d4 d5 3. e5 e6 4. c3 c5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 c5 4. Ne2 e6 *

[ECO "B20"]

1. e4 c5 2. b4 cxb4 3. d4 e6 4. Nd2 d5 *

[ECO "B10"]

1. e4 c6 2. c4 e6 3. Nf3 d5 4. exd5 cxd5 *

[ECO "D00"]

1. d4 d5 2. Bf4 Nf6 3. Nc3 Bf5 4. e3 e6 *

[ECO "A40"]

1. d4 e6 2. a3 c5 3. Nf3 cxd4 4. Nxd4 d5 *

[ECO "D10"]

1. c4 c6 2. d4 d5 3. cxd5 cxd5 4. Bf4 e6 *

[ECO "B13"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Nc3 e6 *

[ECO "C00"]

1. e4 e6 2. d4 c6 3. Nf3 d5 4. exd5 cxd5 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. e3 c5 4. b3 cxd4 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. Nc3 e6 4. exd5 cxd5 *

[ECO "B20"]

1. e4 c5 2. b3 d5 3. Bb2 d4 4. c3 e5 *

[ECO "B20"]

1. e4 c5 2. Bc4 e6 3. Nf3 d5 4. exd5 exd5 *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 c5 *

[ECO "C00"]

1. e4 e6 2. c4 c5 3. f4 d5 4. cxd5 exd5 *

[ECO "A04"]

1. Nf3 c5 2. c4 b6 3. g3 g6 4. Bg2 Bb7 *

[ECO "A30"]

1. c4 c5 2. g3 e6 3. Nc3 d5 4. cxd5 exd5 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. e3 c5 4. cxd5 exd5 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. cxd5 exd5 4. g3 c5 *

[ECO "A00"]

1. a4 e5 2. d4 exd4 3. Nf3 d5 4. Nxd4 c5 *

[ECO "C23"]

1. e4 e5 2. Bc4 c6 3. d4 d5 4. exd5 cxd5 *

[ECO "A43"]

1. d4 c5 2. Nf3 cxd4 3. Nxd4 d5 4. c4 e5 *

[ECO "A04"]

1. Nf3 c5 2. d4 cxd4 3. Nxd4 d5 4. e3 e5 *

[ECO "A21"]

1. c4 e5 2. Nc3 c6 3. g3 d5 4. cxd5 cxd5 *

[ECO "B10"]

1. e4 c6 2. d3 d5 3. Qe2 e5 4. exd5 cxd5 *

[ECO "A13"]

1. c4 e6 2. Nf3 c6 3. b3 d5 4. Bb2 f5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h6 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nc3 d5 4. Bf4 c6 *

[ECO "A84"]

1. c4 e6 2. d4 f5 3. Nc3 d5 4. Nf3 c6 *

[ECO "A40"]

1. d4 e6 2. g3 f5 3. c4 d5 4. Bg2 c6 *

[ECO "A81"]

1. d4 f5 2. g3 c6 3. Nc3 d5 4. Bf4 e6 *

[ECO "A81"]

1. d4 f5 2. g3 c6 3. Nf3 d5 4. Nc3 e6 *

[ECO "A40"]

1. d4 e6 2. Nf3 d5 3. e3 c6 4. Bd3 f5 *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. Nf3 c6 4. a3 e6 *

[ECO "A40"]

1. d4 c6 2. Bg5 d5 3. Nc3 f6 4. Bc1 e5 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. Bg2 c6 4. Nc3 f5 *

[ECO "A04"]

1. Nf3 c5 2. b3 d6 3. Bb2 e5 4. c4 f5 *

[ECO "E20"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. g3 O-O *

[ECO "A04"]

1. Nf3 c5 2. b3 d6 3. c4 e5 4. Nc3 f5 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. Nf3 c5 4. e3 f5 *

[ECO "A30"]

1. c4 c5 2. Nf3 d6 3. g3 e5 4. Nc3 f5 *

[ECO "A04"]

1. Nf3 c5 2. b3 d6 3. Bb2 e5 4. d3 f5 *

[ECO "A40"]

1. d4 e6 2. g3 f5 3. Bg2 d5 4. Nh3 c5 *

[ECO "A80"]

1. d4 f5 2. g4 d5 3. g5 e6 4. h4 c5 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. Bg5 f6 4. Bh4 c5 *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. f3 c5 4. e4 e5 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. Be3 f5 4. Nc3 fxe4 *

[ECO "A34"]

1. c4 c5 2. Nc3 g6 3. Nf3 Bg7 4. d4 cxd4 *

[ECO "A41"]

1. d4 d6 2. Bg5 h6 3. Bh4 g5 4. Bg3 f5 *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. Bg5 h6 4. Bh4 g5 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. Bg5 h6 4. Bf4 g5 *

[ECO "A02"]

1. f4 g5 2. fxg5 d5 3. Nf3 h6 4. d4 hxg5 *

[ECO "A00"]

1. g3 d5 2. f4 h5 3. c4 h4 4. Bg2 dxc4 *

[ECO "D07"]

1. d4 d5 2. c4 Nc6 3. Nc3 dxc4 4. d5 Nb8 *

[ECO "B00"]

1. e4 Nc6 2. d4 d5 3. Nc3 dxe4 4. d5 Nb8 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. g3 g6 4. d4 exd4 *

[ECO "A10"]

1. c4 g6 2. e4 d6 3. d4 e5 4. Nf3 exd4 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. e3 g6 4. d4 e4 *

[ECO "A07"]

1. Nf3 d5 2. g3 g6 3. c4 c6 4. d4 Bg7 *

[ECO "C34"]

1. e4 e5 2. f4 exf4 3. Nf3 d6 4. Bc4 g5 *

[ECO "C37"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. d4 d6 *

[ECO "C25"]

1. e4 e5 2. Nc3 d6 3. f4 exf4 4. Nf3 g5 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. Nf3 d4 4. Bg2 g6 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 g6 4. c4 d4 *

[ECO "A00"]

1. g3 d5 2. d3 e5 3. Bg2 g6 4. c4 dxc4 *

[ECO "A00"]

1. g3 d5 2. Bg2 e5 3. d3 g6 4. Nc3 d4 *

[ECO "A41"]

1. d4 d6 2. c4 e5 3. d5 g6 4. e4 h5 *

[ECO "B00"]

1. e4 g5 2. d4 h6 3. Bc4 e6 4. Nf3 d6 *

[ECO "B00"]

1. e4 g5 2. d4 h6 3. Bc4 e6 4. h4 d5 *

[ECO "A32"]

1. Nf3 c5 2. c4 Nf6 3. d4 cxd4 4. Nxd4 e6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 a5 4. g3 Nf6 *

[ECO "A41"]

1. d4 d6 2. c4 e5 3. Nf3 e4 4. Ng1 h6 *

[ECO "C34"]

1. e4 e5 2. f4 exf4 3. Nf3 h6 4. b3 d6 *

[ECO "C00"]

1. e4 e6 2. g4 d5 3. e5 h5 4. g5 d4 *

[ECO "C00"]

1. e4 e6 2. Nc3 d5 3. g3 Nf6 4. e5 Ng8 *

[ECO "C00"]

1. e4 e6 2. b3 d5 3. Bb2 dxe4 4. d3 e3 *

[ECO "C00"]

1. e4 e6 2. Qe2 d5 3. exd5 Qxd5 4. Nc3 Qd8 *

[ECO "A13"]

1. c4 e6 2. Nc3 d5 3. g3 d4 4. Nb5 e5 *

[ECO "C31"]

1. e4 e5 2. f4 d5 3. exd5 e4 4. d3 exd3 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. d4 e4 4. e3 d5 *

[ECO "C00"]

1. e4 e6 2. Qe2 e5 3. c3 d5 4. d4 exd4 *

[ECO "E11"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 c5 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. b3 dxc4 4. bxc4 e5 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. Nc3 e5 4. e3 exd4 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. Nc3 e5 4. Nf3 exd4 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. d4 f5 4. Bc4 fxe4 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. d4 f5 4. Nc3 fxe4 *

[ECO "C40"]

1. e4 e5 2. Nf3 f5 3. exf5 d6 4. d4 e4 *

[ECO "C41"]

1. e4 e5 2. d4 d6 3. Nf3 f5 4. Bc4 exd4 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. g3 f5 4. d4 exd4 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. Bg2 d6 4. d4 exd4 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. g3 f5 4. d4 exd4 *

[ECO "A50"]

1. d4 Nf6 2. c4 c6 3. Nc3 e6 4. Bg5 Be7 *

[ECO "A80"]

1. d4 f5 2. Nf3 d6 3. Nc3 d5 4. g3 e6 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nc3 d5 4. g4 fxg4 *

[ECO "A80"]

1. d4 f5 2. g4 fxg4 3. Nc3 d5 4. Bg2 e6 *

[ECO "A82"]

1. d4 f5 2. e4 fxe4 3. f3 e6 4. Bf4 d5 *

[ECO "A04"]

1. Nf3 f5 2. Nc3 e6 3. e4 fxe4 4. Nxe4 d5 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 f5 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 f6 4. b5 e5 *

[ECO "A06"]

1. Nf3 d5 2. b3 f6 3. e3 e5 4. c4 e4 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 f6 4. d3 e5 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nf3 d5 4. cxd5 exd5 *

[ECO "D37"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 *

[ECO "A40"]

1. d4 e6 2. g3 f5 3. c4 d5 4. cxd5 exd5 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. g3 f5 4. cxd5 exd5 *

[ECO "A84"]

1. c4 f5 2. d4 d6 3. g3 e5 4. dxe5 dxe5 *

[ECO "A20"]

1. c4 e5 2. g3 g6 3. d4 f6 4. h4 d6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. e3 f5 4. g3 g6 *

[ECO "A04"]

1. Nf3 d6 2. g3 e5 3. c4 f5 4. Bh3 g5 *

[ECO "C37"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. d4 g4 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bh4 g5 4. Bg3 e6 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nc3 h6 4. Bh4 g5 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nd2 h6 4. Bh4 g5 *

[ECO "B07"]

1. d4 d6 2. e4 Nf6 3. Nc3 g6 4. Be2 Bg7 *

[ECO "A81"]

1. g3 f5 2. d4 g6 3. h4 Nf6 4. h5 Rg8 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 d6 3. d4 Bf5 4. Qb3 Qc8 *

[ECO "D10"]

1. c4 c6 2. d4 d5 3. e3 Bf5 4. Qb3 Qc8 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. g3 Be6 4. Qb3 Qc8 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bg4 3. c3 e6 4. Qb3 Qc8 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. d3 g6 4. Bg2 Bg7 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 a6 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 d5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. c3 h6 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 d6 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nh3 d6 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. g3 Nf6 4. Bg2 d5 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nd2 Nh6 4. e4 fxe4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 c5 4. Nf3 cxd4 *

[ECO "D02"]

1. d4 d5 2. Nf3 c5 3. c4 dxc4 4. e3 cxd4 *

[ECO "D02"]

1. Nf3 d5 2. d4 c5 3. c4 dxc4 4. e4 cxd4 *

[ECO "A13"]

1. c4 e6 2. Nc3 d5 3. cxd5 exd5 4. d4 c6 *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 c6 *

[ECO "B20"]

1. e4 c5 2. c4 Nc6 3. Nc3 g6 4. h3 Bh6 *

[ECO "B20"]

1. e4 c5 2. d3 Nc6 3. f4 g6 4. Nf3 Bg7 *

[ECO "C64"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O d6 *

[ECO "C50"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 d6 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. c4 Nc6 4. Be3 e5 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. b3 Nc6 4. Bb2 e6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 Nf6 *

[ECO "A36"]

1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 *

[ECO "E14"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Bb7 *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. Nc3 Nc6 4. Nf3 Nf6 *

[ECO "D00"]

1. d4 d5 2. h4 Nf6 3. Bf4 c5 4. e3 Nc6 *

[ECO "A45"]

1. d4 Nf6 2. g3 d5 3. Bg2 c5 4. Nf3 Nc6 *

[ECO "B00"]

1. e4 Nc6 2. Nf3 d6 3. d4 Nf6 4. Nc3 g6 *

[ECO "A45"]

1. d4 Nf6 2. Nc3 d5 3. Nf3 Nc6 4. Bf4 Nh5 *

[ECO "C65"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Bxc6 dxc6 *

[ECO "D51"]

1. c4 e6 2. Nc3 d5 3. d4 Nf6 4. Bg5 Nbd7 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. g3 e6 4. c4 Nbd7 *

[ECO "A85"]

1. c4 f5 2. Nc3 Nf6 3. d4 d6 4. Bg5 Nbd7 *

[ECO "D01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 Nbd7 4. Nf3 h6 *

[ECO "E60"]

1. c4 Nf6 2. d4 g6 3. Nf3 Bg7 4. Nc3 d6 *

[ECO "C70"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 h6 *

[ECO "A13"]

1. c4 e6 2. Nc3 c5 3. e4 Nc6 4. Nf3 e5 *

[ECO "B32"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Be2 e5 *

[ECO "A30"]

1. c4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 *

[ECO "B13"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Nf3 Nc6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Nf6 3. Bb2 Nc6 4. e3 Bg4 *

[ECO "B00"]

1. e4 Nc6 2. Nf3 d6 3. d4 Bg4 4. c3 Nf6 *

[ECO "B22"]

1. e4 c5 2. c3 b6 3. d4 Bb7 4. Bd3 Nf6 *

[ECO "A12"]

1. Nf3 d5 2. b3 Nf6 3. Bb2 c6 4. c4 Bg4 *

[ECO "D00"]

1. d4 d5 2. Nc3 Nf6 3. Nf3 c6 4. e3 Bg4 *

[ECO "B06"]

1. d4 d6 2. e4 g6 3. Nc3 Bg7 4. Nf3 a6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Bg4 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. b3 Bf5 4. e3 e6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 b6 4. g3 Bb7 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. g3 b5 4. Bg2 Bb7 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 a5 4. a3 Bc5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 a5 4. a3 Be7 *

[ECO "A20"]

1. c4 e5 2. g3 c6 3. d4 Bb4+ 4. Bd2 Bxd2+ *

[ECO "A30"]

1. c4 c5 2. Nf3 d6 3. g3 g6 4. Bg2 Bg7 *

[ECO "A40"]

1. d4 g6 2. c4 Bg7 3. e4 c5 4. d5 d6 *

[ECO "C15"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. exd5 exd5 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Bf4 Be7 *

[ECO "E60"]

1. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. b4 d6 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. f3 Bg7 4. e4 d6 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 d5 4. exd5 Nf6 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. Bf4 e6 4. Nbd2 Bd6 *

[ECO "A40"]

1. d4 e6 2. Nf3 d5 3. b3 Nf6 4. Bb2 Bd6 *

[ECO "C30"]

1. e4 e5 2. f4 Bc5 3. Nf3 d6 4. Nc3 Nf6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Bc5 4. e3 Nf6 *

[ECO "A00"]

1. g3 e5 2. c4 g6 3. Bg2 Bg7 4. Nc3 Ne7 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. b3 Nf6 4. g3 a5 *

[ECO "E14"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 c5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bf4 c5 4. c3 b6 *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. a4 bxc4 *

[ECO "A13"]

1. c4 e6 2. Nf3 c5 3. d4 Nf6 4. e3 g6 *

[ECO "B40"]

1. Nf3 c5 2. e4 e6 3. Nc3 Nf6 4. e5 Nd5 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Bd3 g6 *

[ECO "D02"]

1. Nf3 Nf6 2. d4 d5 3. Bf4 c5 4. e3 cxd4 *

[ECO "C11"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bd3 c5 *

[ECO "C34"]

1. e4 e5 2. f4 exf4 3. Nf3 Ne7 4. d4 d5 *

[ECO "D81"]

1. d4 Nf6 2. c4 d5 3. Nc3 g6 4. Qb3 dxc4 *

[ECO "D00"]

1. d4 d5 2. Bg5 Nf6 3. Bxf6 gxf6 4. c4 dxc4 *

[ECO "B00"]

1. e4 Nc6 2. Nf3 d6 3. d4 Nf6 4. d5 Nb8 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d6 4. f3 Nf6 *

[ECO "A00"]

1. g3 Nf6 2. d4 d5 3. Nf3 e6 4. Bg2 g6 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. c4 dxc4 4. e4 b5 *

[ECO "B15"]

1. e4 c6 2. Nc3 d5 3. d4 g6 4. e5 h5 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. c4 e5 4. d5 f5 *

[ECO "A43"]

1. d4 Nf6 2. Nf3 c5 3. d5 b5 4. Qd3 Na6 *

[ECO "A35"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. d4 cxd4 *

[ECO "A30"]

1. c4 c5 2. g3 e6 3. Bg2 Nc6 4. Nc3 Nf6 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. f4 Nc6 4. Nf3 Nge7 *

[ECO "D04"]

1. d4 d5 2. Nf3 Nf6 3. e3 c5 4. b3 Nc6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c4 Nf6 4. Nc3 Nc6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nc6 3. b3 Nf6 4. e3 g6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nc6 3. d4 g6 4. Bg2 Nf6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. e3 Nc6 4. Nf3 g6 *

[ECO "C68"]

1. e4 Nc6 2. Nf3 e5 3. Bb5 a6 4. Bxc6 bxc6 *

[ECO "B20"]

1. e4 c5 2. g3 Nc6 3. Bg2 e6 4. f4 d5 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. Nc3 c5 4. Bg2 Nc6 *

[ECO "C48"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 Nd4 *

[ECO "A00"]

1. d3 e5 2. c3 d5 3. d4 Nc6 4. dxe5 Nxe5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. c4 Bg4 4. Nc3 Nbd7 *

[ECO "B20"]

1. e4 c5 2. Ne2 d6 3. Nbc3 Nf6 4. d4 Bd7 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. h3 Bd7 *

[ECO "D04"]

1. d4 Nf6 2. Nf3 d5 3. e3 c6 4. Bd3 Bg4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d5 4. e3 Bf5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bf5 3. Bf4 e6 4. Nc3 Nf6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bf5 3. g3 e6 4. Bb2 Nf6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Nd2 c5 4. a3 Bxd2+ *

[ECO "A30"]

1. c4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 *

[ECO "E11"]

1. c4 e6 2. d4 Nf6 3. Nf3 Bb4+ 4. Bd2 Bxd2+ *

[ECO "A07"]

1. g3 g6 2. Nf3 d5 3. c4 c6 4. Bg2 Bg7 *

[ECO "A40"]

1. d4 e6 2. g3 d5 3. Bg2 c6 4. Nf3 Bd6 *

[ECO "C15"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Qd3 dxe4 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 c6 4. d4 Bb4+ *

[ECO "A16"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. g3 Bg7 *

[ECO "A50"]

1. d4 Nf6 2. c4 c6 3. Nc3 d5 4. cxd5 cxd5 *

[ECO "D00"]

1. Nc3 d5 2. d4 Nf6 3. Bf4 e6 4. e3 Bb4 *

[ECO "E00"]

1. c4 Nf6 2. d4 e6 3. g3 Bb4+ 4. Bd2 Bxd2+ *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. g3 Bxc3 4. bxc3 Nf6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. g3 b5 4. Qd3 a6 *

[ECO "C03"]

1. d4 e6 2. e4 d5 3. Nd2 b6 4. Ngf3 Nf6 *

[ECO "E10"]

1. d4 Nf6 2. c4 c5 3. Nf3 e6 4. d5 b5 *

[ECO "A86"]

1. c4 f5 2. d4 Nf6 3. g3 c5 4. d5 b5 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. Nc3 c5 4. e3 g6 *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nf3 g6 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 c6 4. Nf3 e4 *

[ECO "B09"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 *

[ECO "A43"]

1. d4 c5 2. d5 d6 3. e4 Nf6 4. Nc3 g6 *

[ECO "B01"]

1. e4 c6 2. c4 d5 3. exd5 Nf6 4. Nc3 cxd5 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c6 3. Nc3 d6 4. g3 e5 *

[ECO "D00"]

1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 exf3 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. g3 d6 4. Bg2 g6 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. c4 e5 4. Ne2 Nf6 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 *

[ECO "B00"]

1. e4 d6 2. Nf3 Nf6 3. Nc3 e5 4. d4 exd4 *

[ECO "C00"]

1. c4 e6 2. e4 d5 3. exd5 exd5 4. cxd5 Nf6 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. cxd5 exd5 4. Qc2 Nf6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. d3 d5 4. cxd5 Nxd5 *

[ECO "C27"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Qh5 Nd6 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bh4 g5 4. Bg3 Nf6 *

[ECO "D21"]

1. d4 d5 2. c4 dxc4 3. Nf3 e6 4. e3 a6 *

[ECO "D32"]

1. c4 e6 2. Nc3 d5 3. d4 c5 4. cxd5 exd5 *

[ECO "C53"]

1. e4 e5 2. Bc4 Bc5 3. c3 Nc6 4. Nf3 Qe7 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nc3 d6 4. g3 Nc6 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. Qb3 Nc6 4. e3 Nf6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. h3 Nbd7 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c5 3. g3 Nc6 4. d4 cxd4 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. g3 Nc6 *

[ECO "B22"]

1. e4 c5 2. c3 d6 3. d4 Nf6 4. dxc5 Nc6 *

[ECO "B00"]

1. d4 Nc6 2. e4 d5 3. Nc3 e6 4. e5 Nge7 *

[ECO "E00"]

1. d4 e6 2. g3 Nf6 3. c4 d5 4. Nf3 Nc6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d3 d5 *

[ECO "C13"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. g3 Nbd7 4. Bg2 e5 *

[ECO "A00"]

1. Nc3 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. c3 Nf6 *

[ECO "C63"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. Nc3 Nf6 *

[ECO "B06"]

1. e4 g6 2. c4 c5 3. Nf3 Nc6 4. d4 cxd4 *

[ECO "B20"]

1. e4 c5 2. c4 Nc6 3. Nc3 g6 4. h3 d6 *

[ECO "B13"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bf4 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 d6 4. d4 cxd4 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 c5 4. dxc5 Nc6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. c3 d5 4. e5 Nc6 *

[ECO "B04"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e4 Nc6 4. d5 Ne5 *

[ECO "C10"]

1. d4 e6 2. e4 d5 3. Nc3 Nc6 4. e5 f6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. g3 g6 4. d4 Nd7 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 g6 4. d4 exd4 *

[ECO "A40"]

1. d4 Nc6 2. Nf3 d6 3. c4 Bg4 4. d5 Ne5 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 Nd7 4. e4 e5 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d5 3. d4 c6 4. e3 Bf5 *

[ECO "A06"]

1. Nf3 d5 2. b3 c6 3. Bb2 Bg4 4. e3 Nf6 *

[ECO "A13"]

1. c4 e6 2. Nc3 b6 3. g3 Bb7 4. e4 f5 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nf3 Nf6 4. d4 c6 *

[ECO "D30"]

1. d4 e6 2. c4 d5 3. cxd5 exd5 4. Nc3 Be7 *

[ECO "C01"]

1. d4 e6 2. e4 d5 3. exd5 Qxd5 4. Nf3 Nf6 *

[ECO "A41"]

1. d4 d6 2. c4 e5 3. dxe5 dxe5 4. Qxd8+ Kxd8 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. e3 O-O *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. e4 Bb4+ 4. Bd2 Bxd2+ *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. c4 e5 4. Be2 Be7 *

[ECO "A04"]

1. Nf3 g6 2. d4 Bg7 3. e4 c6 4. c3 d5 *

[ECO "B10"]

1. e4 c6 2. Ne2 d5 3. e5 g6 4. d4 Bg7 *

[ECO "B20"]

1. e4 c5 2. d3 g6 3. g3 Bg7 4. Bg2 d6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 g6 4. Bb2 Bg7 *

[ECO "B31"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 *

[ECO "A41"]

1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. Nf3 e5 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 c5 *

[ECO "C00"]

1. d4 e6 2. e4 d6 3. Nf3 Nf6 4. Nc3 Be7 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. Bf4 Nf6 4. e3 Be7 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. Nbd2 Nf6 4. e3 Be7 *

[ECO "E32"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Bxc3+ *

[ECO "A22"]

1. c4 e5 2. Nc3 Bb4 3. g3 Nf6 4. Bg2 Bxc3 *

[ECO "A80"]

1. d4 f5 2. Nf3 g6 3. c4 Bg7 4. Nc3 Nf6 *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. f3 Nf6 4. Bg5 c6 *

[ECO "A84"]

1. d4 f5 2. c4 d6 3. Nc3 Nf6 4. Nf3 c6 *

[ECO "D37"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Nbd7 *

[ECO "A09"]

1. Nf3 d5 2. c4 c6 3. e3 e6 4. b3 Nf6 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. Bg2 c6 4. Qc2 Nf6 *

[ECO "D43"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 *

[ECO "D00"]

1. Nc3 d5 2. d4 Nf6 3. Nf3 c6 4. e3 e6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 a6 4. g3 b5 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 *

[ECO "C65"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 d6 *

[ECO "C05"]

1. d4 e6 2. e4 d5 3. Nd2 Nf6 4. e5 Ng8 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e3 e5 4. Bxc4 exd4 *

[ECO "A20"]

1. c4 e5 2. Nf3 d6 3. d4 e4 4. Nfd2 f5 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. e4 Bg7 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nc6 3. g3 g6 4. Bg2 Bg7 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Bc5 4. Bc4 d6 *

[ECO "C00"]

1. e4 e6 2. d4 d6 3. Nf3 Nd7 4. Nc3 Be7 *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 g6 4. g3 Bg7 *

[ECO "E10"]

1. d4 Nf6 2. Nf3 e6 3. c4 Nc6 4. g3 Bb4+ *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. c3 Nc6 *

[ECO "E21"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. f4 Nc6 4. Nf3 Nge7 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 c5 4. c4 Nc6 *

[ECO "B20"]

1. e4 c5 2. d3 Nc6 3. g3 d5 4. Nd2 Nf6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. f4 Nc6 4. Nf3 Nf6 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. g3 d5 *

[ECO "C41"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. f4 e5 *

[ECO "A00"]

1. g3 e5 2. Bg2 Nf6 3. d3 d5 4. Nf3 Nbd7 *

[ECO "A04"]

1. Nf3 d6 2. d4 f5 3. Nc3 Nf6 4. Bg5 Nbd7 *

[ECO "C02"]

1. d4 e6 2. e4 d5 3. e5 c5 4. c3 Nc6 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. c3 cxd4 *

[ECO "C00"]

1. e4 e6 2. Qe2 Nc6 3. Nf3 e5 4. g3 Nf6 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. e3 Nf6 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. d4 cxd4 *

[ECO "C00"]

1. e4 e6 2. f4 d5 3. e5 c5 4. Nf3 Nc6 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 Nc6 4. Nf3 dxe4 *

[ECO "C45"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 g6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. d4 Nxd4 4. Nxd4 exd4 *

[ECO "B00"]

1. e4 Nc6 2. d4 d5 3. exd5 Qxd5 4. Nf3 Bg4 *

[ECO "A04"]

1. Nf3 b6 2. e4 Bb7 3. Nc3 Nf6 4. e5 Nd5 *

[ECO "A45"]

1. d4 Nf6 2. g3 d5 3. Bg2 Bf5 4. c4 c6 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 Bg4 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Bd3 Bg4 *

[ECO "D00"]

1. Nc3 d5 2. d4 Bf5 3. f3 Nf6 4. g4 Bg6 *

[ECO "D06"]

1. d4 d5 2. c4 Bf5 3. cxd5 Bxb1 4. Qa4+ c6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bf5 3. g3 c6 4. Bg2 e6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. g3 d6 4. exd6 Qxd6 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 Qe7 4. Nf3 Qxe4+ *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nxf7 Kxf7 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. b3 Bg7 4. Bb2 O-O *

[ECO "E61"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e3 O-O *

[ECO "E11"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 b6 *

[ECO "C10"]

1. d4 e6 2. e4 d5 3. Nc3 Be7 4. e5 b6 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. e3 g6 4. Nc3 Bg7 *

[ECO "B06"]

1. e4 g6 2. d4 c6 3. Nf3 Bg7 4. c4 d6 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. g3 dxc4 4. Na3 Bxa3 *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. c4 Bb4+ *

[ECO "A40"]

1. c4 e6 2. d4 Bb4+ 3. Bd2 a5 4. Nc3 Nf6 *

[ECO "E00"]

1. d4 e6 2. c4 Nf6 3. g3 Bb4+ 4. Nd2 c5 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. g3 e6 4. Nc3 Be7 *

[ECO "A04"]

1. Nf3 c5 2. c4 g6 3. e3 Nf6 4. b3 Bg7 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. g3 g6 4. b3 Bg7 *

[ECO "A29"]

1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 d5 *

[ECO "C15"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Ne2 Ne7 *

[ECO "E60"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. e4 d6 *

[ECO "A07"]

1. g3 d5 2. Nf3 g6 3. Bg2 Bg7 4. c4 Nf6 *

[ECO "D82"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bf4 Bg7 *

[ECO "A03"]

1. f4 d5 2. Nf3 g6 3. e3 Nf6 4. Be2 Bg7 *

[ECO "E21"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 d6 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. g3 Nf6 4. Nc3 Bb4 *

[ECO "A10"]

1. c4 f5 2. Nf3 Nf6 3. d4 e6 4. Nc3 Be7 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. Nd2 h6 4. Bh4 c5 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 Nf6 4. Nc3 c6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 c5 3. d4 cxd4 4. Nxd4 e5 *

[ECO "A13"]

1. c4 e6 2. d4 c5 3. d5 d6 4. Nc3 Ne7 *

[ECO "D11"]

1. Nf3 Nf6 2. c4 c6 3. d4 d5 4. Nbd2 g6 *

[ECO "B07"]

1. d4 d6 2. e4 Nf6 3. Nc3 c6 4. f4 g6 *

[ECO "B10"]

1. e4 c6 2. Nc3 d5 3. d3 Nf6 4. e5 d4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. Bd3 dxe4 4. Bxe4 Nf6 *

[ECO "B32"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. g3 c5 4. Bg2 cxd4 *

[ECO "A50"]

1. d4 Nf6 2. c4 c6 3. g3 e6 4. Bg2 d5 *

[ECO "A21"]

1. c4 e5 2. Nc3 c6 3. e4 Nf6 4. Nf3 d6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. Bc4 e6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. c3 e6 *

[ECO "A85"]

1. d4 f5 2. c4 Nf6 3. Nc3 d6 4. Nf3 g6 *

[ECO "A83"]

1. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. Bg5 g6 *

[ECO "B40"]

1. Nf3 c5 2. e4 e6 3. b3 a6 4. Bb2 d6 *

[ECO "B07"]

1. e4 d6 2. d4 g6 3. Nf3 Bg7 4. c3 Nf6 *

[ECO "B13"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 g6 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. Nc3 h6 4. d4 dxe4 *

[ECO "A20"]

1. c4 e5 2. g3 c6 3. Nf3 e4 4. Nd4 d5 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Bc4 e5 *

[ECO "D02"]

1. Nf3 d5 2. d4 c5 3. c4 dxc4 4. d5 e6 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. e3 c5 4. cxd5 exd5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. g3 d5 4. exd5 exd5 *

[ECO "C64"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. c3 Qf6 *

[ECO "A00"]

1. g3 c5 2. Bg2 g6 3. e4 Bg7 4. f4 Nc6 *

[ECO "A91"]

1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. a3 Nf6 4. Bb5 Bc5 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 b6 4. e4 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 e6 4. g3 Nf6 *

[ECO "A34"]

1. c4 c5 2. Nc3 Nf6 3. Nf3 g6 4. e4 Nc6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. Nc3 g6 4. e3 Nf6 *

[ECO "A30"]

1. c4 c5 2. g3 Nc6 3. Nf3 Nf6 4. Bg2 g6 *

[ECO "D06"]

1. d4 d5 2. c4 Nf6 3. cxd5 c6 4. dxc6 Nxc6 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 Ne7 4. Nf3 Nbc6 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O d6 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. e4 e5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 4. c4 Nbd7 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d6 3. Nf3 Nbd7 4. Nbd2 h6 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 Nc6 3. d4 d5 4. e5 Nd7 *

[ECO "A28"]

1. Nf3 Nf6 2. c4 Nc6 3. Nc3 e6 4. e4 e5 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e3 Nc6 4. d4 exd4 *

[ECO "C00"]

1. e4 e6 2. d3 c5 3. g3 Nc6 4. Bg2 g6 *

[ECO "D00"]

1. d4 d5 2. e3 c5 3. Nf3 e6 4. c4 Nc6 *

[ECO "C00"]

1. e4 e6 2. Nc3 c5 3. f4 Nc6 4. Nf3 d5 *

[ECO "B00"]

1. e4 Nc6 2. d4 d5 3. Nc3 dxe4 4. d5 Ne5 *

[ECO "C65"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nc6 *

[ECO "B00"]

1. e4 Nc6 2. d4 d6 3. Nf3 Bg4 4. Bb5 a6 *

[ECO "B00"]

1. e4 Nc6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 *

[ECO "C50"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 4. d4 Bg4 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nc6 3. d4 Bf5 4. Bg2 Qd7 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. c4 Bb7 4. g3 c5 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. g3 Bf5 4. c4 c6 *

[ECO "A00"]

1. Nc3 Nf6 2. e4 d6 3. f4 Bg4 4. Be2 Bxe2 *

[ECO "A00"]

1. b4 d5 2. Bb2 Bg4 3. h3 Bh5 4. c4 Nf6 *

[ECO "A13"]

1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. d4 dxc4 *

[ECO "A60"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 Bd7 4. Nf3 a6 *

[ECO "B40"]

1. e4 e6 2. Nf3 c5 3. c3 b6 4. d4 Bb7 *

[ECO "A09"]

1. Nf3 d5 2. c4 c6 3. g3 Bg4 4. Qb3 Bxf3 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. e3 Bf5 4. Nf3 e6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. g3 Bxf3 4. exf3 e6 *

[ECO "D15"]

1. d4 Nf6 2. Nf3 d5 3. c4 c6 4. Nc3 Qb6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Bg5 h6 4. Bxf6 Qxf6 *

[ECO "A00"]

1. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nf6 4. c4 O-O *

[ECO "A45"]

1. d4 Nf6 2. g3 e6 3. Nf3 Be7 4. Bg2 O-O *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 e5 4. Nd5 Be7 *

[ECO "C43"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Bg5 c6 *

[ECO "B06"]

1. e4 g6 2. d4 c6 3. Nc3 Bg7 4. h3 d6 *

[ECO "A30"]

1. c4 c5 2. Nf3 g6 3. d4 Bg7 4. d5 d6 *

[ECO "A40"]

1. d4 e6 2. Nf3 d5 3. Bf4 Bd6 4. e3 Bxf4 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Nc3 b6 4. e4 Bb4 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Bg5 Be7 4. Nf3 b6 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 c6 4. Bf4 Be7 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. c3 e6 4. Bf4 Be7 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 d6 3. Bf4 g6 4. h3 Bg7 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. c3 Nf6 4. Bd3 Bg7 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c4 Bg7 4. d4 Qb6 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. e3 Nf6 4. b3 Bd6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. e3 d5 4. Nf3 Bb4+ *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Bf4 Bb4+ 4. Nc3 Bxc3+ *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nc3 Nf6 4. Qc2 Bb4 *

[ECO "A10"]

1. c4 f5 2. g3 Nf6 3. Bg2 e5 4. Nc3 Bb4 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. Bf4 Nf6 4. e3 Be7 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. g3 g6 4. b3 Bg7 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nd2 Bg7 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 e6 4. g3 a6 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Nc3 Nf6 4. Bg2 Bc5 *

[ECO "A46"]

1. d4 Nf6 2. Bg5 e6 3. Nf3 h6 4. Bh4 b6 *

[ECO "A84"]

1. d4 f5 2. c4 e6 3. Nc3 Nf6 4. Qc2 b6 *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. a4 b4 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. Nc3 cxd4 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. e3 cxd4 *

[ECO "A43"]

1. d4 Nf6 2. Nf3 c5 3. d5 e6 4. Nc3 exd5 *

[ECO "A31"]

1. c4 Nf6 2. Nf3 c5 3. d4 g6 4. Nc3 cxd4 *

[ECO "B07"]

1. d4 d6 2. e4 Nf6 3. Nc3 g6 4. Bg5 c6 *

[ECO "A12"]

1. Nf3 d5 2. c4 c6 3. b3 Nf6 4. g3 dxc4 *

[ECO "C45"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 *

[ECO "A04"]

1. Nf3 c5 2. Nc3 d6 3. d4 cxd4 4. Nxd4 Nf6 *

[ECO "A07"]

1. Nf3 d5 2. g3 c5 3. d4 Nf6 4. c4 cxd4 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Bf4 Nf6 *

[ECO "A00"]

1. g3 e5 2. Bg2 Nf6 3. c4 c6 4. d3 d5 *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 e6 *

[ECO "A06"]

1. Nf3 d5 2. e3 c5 3. d4 Nf6 4. dxc5 e6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. Bf4 Nf6 4. Nbd2 c5 *

[ECO "A80"]

1. d4 f5 2. Nc3 Nf6 3. Bg5 d5 4. f3 h6 *

[ECO "B13"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 *

[ECO "D70"]

1. d4 Nf6 2. c4 g6 3. f3 d5 4. cxd5 Nxd5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Nc3 d5 4. Bg5 h6 *

[ECO "C00"]

1. e4 e6 2. b3 d5 3. Bb2 dxe4 4. Nc3 Nf6 *

[ECO "E00"]

1. d4 Nf6 2. g3 e6 3. c4 d5 4. cxd5 exd5 *

[ECO "A54"]

1. c4 d6 2. Nc3 e5 3. d4 Nf6 4. dxe5 dxe5 *

[ECO "C00"]

1. e4 e6 2. Nf3 d5 3. Nc3 Nf6 4. e5 Nfd7 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. Nc3 a6 4. g3 e6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 a6 4. Nxc4 b5 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. Nc3 dxc4 4. e3 b5 *

[ECO "D11"]

1. Nf3 d5 2. d4 c6 3. c4 dxc4 4. Nc3 b5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. g3 c6 4. Bg2 Bf5 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. e3 c5 4. exd4 cxd4 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. g3 c6 4. Bg2 dxc4 *

[ECO "B54"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 e5 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. g3 d5 4. Bg2 d4 *

[ECO "C34"]

1. e4 e5 2. f4 exf4 3. Nf3 h6 4. Bc4 d6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 a5 4. Nf3 Nc6 *

[ECO "A30"]

1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. e3 Nc6 *

[ECO "B24"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. d3 Bg7 *

[ECO "C50"]

1. e4 e5 2. Bc4 Nc6 3. Nf3 Be7 4. Nc3 d6 *

[ECO "C23"]

1. e4 e5 2. Bc4 d6 3. d3 Nc6 4. Nf3 Be7 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 Nc6 4. Be3 Bb4 *

[ECO "D31"]

1. d4 d5 2. c4 e6 3. Nc3 Nc6 4. Nf3 Bb4 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. d3 g6 4. g3 Bg7 *

[ECO "C25"]

1. e4 e5 2. Nc3 Bc5 3. Nf3 Nc6 4. Nxe5 Nxe5 *

[ECO "A40"]

1. d4 e6 2. c4 Nc6 3. e3 Nf6 4. Nf3 Be7 *

[ECO "A35"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 Nc6 4. g3 b6 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. e4 Nf6 4. g3 e6 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. g3 Nc6 4. Nf3 Nf6 *

[ECO "A35"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. g3 d6 *

[ECO "B03"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 *

[ECO "C55"]

1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Nf3 d5 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. d3 Nf6 4. Nc3 d5 *

[ECO "C65"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Qe2 d6 *

[ECO "D30"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Bg5 Nbd7 *

[ECO "A20"]

1. c4 e5 2. Nf3 e4 3. Nd4 Nc6 4. Nc2 Nf6 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 a6 *

[ECO "A06"]

1. Nf3 d5 2. b3 c5 3. e3 Nc6 4. Bb2 a6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 d6 4. Bb5 a6 *

[ECO "C62"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. Bxc6+ bxc6 *

[ECO "D31"]

1. d4 d5 2. c4 c6 3. Nc3 e6 4. e3 Nd7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 e6 *

[ECO "A40"]

1. d4 e6 2. g3 c5 3. Nf3 cxd4 4. Nxd4 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. Nge2 Nc6 4. d4 cxd4 *

[ECO "B23"]

1. e4 c5 2. Nc3 g6 3. g3 Nc6 4. h3 d6 *

[ECO "B10"]

1. e4 c6 2. Ne2 d5 3. e5 c5 4. d4 Nc6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 e6 4. g3 d5 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 e5 4. Nd5 Nc6 *

[ECO "B00"]

1. e4 Nc6 2. Nf3 d6 3. d4 g6 4. d5 Ne5 *

[ECO "C44"]

1. e4 Nc6 2. Nf3 e5 3. d4 exd4 4. c3 d5 *

[ECO "C23"]

1. e4 e5 2. Bc4 d6 3. d4 exd4 4. Nf3 Nc6 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Qxd4 Nc6 *

[ECO "D15"]

1. Nf3 Nf6 2. c4 c6 3. d4 d5 4. Nc3 a6 *

[ECO "E15"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb4+ *

[ECO "B00"]

1. e4 Nc6 2. d4 e5 3. dxe5 Nxe5 4. f4 Nc6 *

[ECO "B00"]

1. d4 Nc6 2. e4 e5 3. dxe5 Nxe5 4. f4 Ng6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 Nc6 4. d4 Bg4 *

[ECO "A30"]

1. c4 c5 2. g3 Nc6 3. Bg2 b6 4. e3 Bb7 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. c4 Nd7 4. Qb3 c5 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 Bxf3 4. exf3 Nd7 *

[ECO "A13"]

1. c4 e6 2. Nc3 b6 3. g3 Bb7 4. Nf3 Bb4 *

[ECO "C30"]

1. e4 e5 2. f4 Bc5 3. Nf3 d6 4. c3 Bg4 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 e6 3. b3 b6 4. Bb2 Bb7 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. e4 Bb7 4. Bd3 Nf6 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. Nf3 b6 4. Nc3 Bb7 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. a4 b4 4. Bg2 Bb7 *

[ECO "A12"]

1. Nf3 d5 2. b3 Nf6 3. Bb2 c6 4. c4 Bf5 *

[ECO "D03"]

1. d4 d5 2. Bg5 Nf6 3. Nf3 Ne4 4. Bf4 Bf5 *

[ECO "D00"]

1. d4 d5 2. f4 Nf6 3. Nf3 Bf5 4. e3 e6 *

[ECO "D00"]

1. d4 d5 2. g3 Bf5 3. c3 Nf6 4. Bg2 e6 *

[ECO "D01"]

1. d4 d5 2. Nc3 Nf6 3. Bg5 Bf5 4. Bxf6 exf6 *

[ECO "A10"]

1. c4 b6 2. g3 Bb7 3. Nf3 Bxf3 4. exf3 c5 *

[ECO "A30"]

1. c4 c5 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 *

[ECO "B27"]

1. e4 c5 2. Nf3 b6 3. d4 cxd4 4. Nxd4 Bb7 *

[ECO "B10"]

1. e4 c6 2. c4 d5 3. cxd5 cxd5 4. exd5 Nf6 *

[ECO "B54"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Bd7 *

[ECO "B53"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Bd7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 h5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Bd3 Bxd3 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. e5 Bg4 4. d4 e6 *

[ECO "B10"]

1. e4 c6 2. h3 d5 3. e5 Bf5 4. Nf3 e6 *

[ECO "A40"]

1. c4 e6 2. d4 b6 3. e4 Bb7 4. Qc2 Qh4 *

[ECO "A40"]

1. d4 e6 2. Nf3 Nf6 3. Bf4 c5 4. e3 Qb6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Nf3 Qxd5 4. Nc3 Qd6 *

[ECO "C43"]

1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Qe7 *

[ECO "A13"]

1. c4 e6 2. Nf3 Nf6 3. Nc3 c5 4. e4 Nc6 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. d4 a6 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 b6 4. Nf3 Qd7 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bh4 c5 4. e4 Qb6 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 Qa5 4. exd5 cxd5 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. d4 g6 4. Nc3 Qd6 *

[ECO "E20"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bd2 O-O *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Nxe5 O-O *

[ECO "E61"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Bg5 O-O *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Nge2 a6 *

[ECO "A21"]

1. c4 e5 2. Nc3 c5 3. d3 g6 4. g3 Bg7 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 Nc6 *

[ECO "B06"]

1. e4 g6 2. d4 c6 3. Nd2 Bg7 4. Ngf3 d6 *

[ECO "D11"]

1. d4 d5 2. c4 c6 3. Nf3 e6 4. Qc2 Bd6 *

[ECO "D02"]

1. d4 d5 2. Nf3 c5 3. dxc5 e6 4. e4 Bxc5 *

[ECO "A04"]

1. Nf3 f5 2. b3 d6 3. d4 g6 4. Bb2 Bg7 *

[ECO "E32"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. Qc2 b6 *

[ECO "E00"]

1. c4 e6 2. d4 Nf6 3. Nc3 c6 4. e4 Bb4 *

[ECO "E10"]

1. d4 e6 2. c4 Nf6 3. Nf3 c5 4. dxc5 Bxc5 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c6 3. b3 g6 4. Bb2 Bg7 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 g6 *

[ECO "A01"]

1. b3 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bb2 c5 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. g3 Nf6 4. b3 Be7 *

[ECO "A40"]

1. d4 e6 2. g3 Nf6 3. Nf3 d5 4. Bg2 Be7 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 g6 4. Bg5 Bg7 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. c3 Bg7 4. f4 Nf6 *

[ECO "D04"]

1. Nf3 d5 2. d4 Nf6 3. e3 g6 4. Be2 Bg7 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nc3 Nf6 4. Bg5 Bb4 *

[ECO "A04"]

1. Nf3 c5 2. g3 Nf6 3. c4 a6 4. Bg2 b5 *

[ECO "A13"]

1. c4 e6 2. b3 d5 3. Nf3 Nf6 4. e3 b6 *

[ECO "D02"]

1. d4 d5 2. Nf3 b6 3. g3 Nf6 4. Nc3 e6 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. b3 c5 4. e3 b6 *

[ECO "A30"]

1. c4 c5 2. Nf3 b6 3. e3 Nf6 4. d4 g6 *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nd2 bxc4 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Bg5 h6 4. Bh4 c5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. d5 e6 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Nf3 d6 4. Bg2 c6 *

[ECO "B10"]

1. e4 c6 2. Qe2 d6 3. d4 Nf6 4. Nf3 g6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 d6 4. e3 g6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c5 4. O-O g6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. e3 c5 4. Bxf6 gxf6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 Nd7 4. O-O c6 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 d6 4. d4 cxd4 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. b3 c6 4. d4 Nf6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. b3 d6 4. Nc3 Nf6 *

[ECO "E10"]

1. c4 Nf6 2. d4 e6 3. Nf3 d5 4. Qc2 c5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. e3 c5 4. Bd3 d5 *

[ECO "A07"]

1. Nf3 d5 2. g3 g6 3. Bg2 Nf6 4. c4 dxc4 *

[ECO "B03"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Bc4 Nb6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 d4 4. e3 dxe3 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 h6 4. Ngf3 Nf6 *

[ECO "A20"]

1. c4 e5 2. Nf3 d6 3. d4 e4 4. Ng5 Nf6 *

[ECO "C41"]

1. e4 e5 2. Nf3 Nf6 3. d4 d6 4. dxe5 Nxe4 *

[ECO "E00"]

1. d4 e6 2. c4 Nf6 3. Bg5 d5 4. cxd5 exd5 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. a3 d5 4. cxd5 Nxd5 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. g3 e6 4. c4 d6 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. f3 e5 4. dxe5 Nh5 *

[ECO "A80"]

1. d4 f5 2. Bf4 Nf6 3. e3 g6 4. h4 h6 *

[ECO "C02"]

1. d4 e6 2. e4 d5 3. e5 b6 4. Bb5+ c6 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 g6 4. Nf3 dxe4 *

[ECO "B13"]

1. e4 c6 2. c4 d5 3. exd5 cxd5 4. d4 g6 *

[ECO "B20"]

1. e4 c5 2. c4 Nc6 3. Nc3 g6 4. h3 Bg7 *

[ECO "B30"]

1. Nf3 c5 2. e4 Nc6 3. d3 g6 4. g3 Bg7 *

[ECO "B06"]

1. d4 d6 2. e4 g6 3. Nc3 Bg7 4. Bg5 Nc6 *

[ECO "A42"]

1. e4 g6 2. d4 Bg7 3. c4 d6 4. Nc3 Nc6 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 O-O *

[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 *

[ECO "B06"]

1. e4 g6 2. d4 d6 3. g3 Bg7 4. Bg2 Nc6 *

[ECO "C50"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O d6 *

[ECO "B00"]

1. d4 Nc6 2. e4 e5 3. dxe5 Nxe5 4. Nc3 Bb4 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. e3 Nc6 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Nc3 Be7 *

[ECO "D02"]

1. Nf3 d5 2. d4 a6 3. Bf4 Nf6 4. e3 Nc6 *

[ECO "A57"]

1. c4 Nf6 2. d4 c5 3. d5 b5 4. Qc2 Na6 *

[ECO "A35"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. a3 e6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. Nc3 cxd4 4. Qxd4 Nc6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 d5 *

[ECO "D31"]

1. c4 c6 2. d4 d5 3. Nf3 e6 4. Nc3 dxc4 *

[ECO "B20"]

1. e4 c5 2. c4 Nc6 3. Nc3 d6 4. h3 Nf6 *

[ECO "A36"]

1. c4 c5 2. g3 Nc6 3. Nc3 Nf6 4. Bg2 d6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 Nc6 4. Nc3 e6 *

[ECO "A28"]

1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. d4 d6 *

[ECO "A41"]

1. d4 d6 2. e4 Nf6 3. f3 Nbd7 4. Be3 e5 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. d3 g6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. a3 e4 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Bg2 f5 4. e3 Nf6 *

[ECO "B00"]

1. e4 Nc6 2. Nf3 d6 3. d4 Nf6 4. Nc3 Bg4 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. e3 c6 4. b3 Nd7 *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. Qh5 Nc6 4. Bc4 g6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 e5 4. e3 f5 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. g3 g6 4. d4 cxd4 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Bc4 g6 *

[ECO "A36"]

1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 d6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. d4 Nd7 4. dxc5 Nxc5 *

[ECO "C02"]

1. d4 e6 2. e4 d5 3. e5 c5 4. Nf3 Nc6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d4 d6 4. dxc5 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. f4 e6 4. Nf3 Nc6 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 c6 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 dxe4 4. dxe4 Nc6 *

[ECO "C41"]

1. e4 e5 2. d4 exd4 3. Nf3 d6 4. Nxd4 Nd7 *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 g6 4. d4 exd4 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. c3 dxc3 *

[ECO "A40"]

1. d4 Nc6 2. d5 Ne5 3. f4 Ng6 4. e4 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Bg4 4. c4 Nc6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. c3 Nd7 *

[ECO "B00"]

1. e4 Nc6 2. d4 d5 3. e5 f6 4. f4 Bf5 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 Be6 4. Nf3 Nc6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 e6 4. d4 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 *

[ECO "A41"]

1. d4 d6 2. c4 e5 3. Nf3 Nc6 4. Nc3 Bg4 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 Nd7 4. O-O e5 *

[ECO "E12"]

1. c4 Nf6 2. d4 e6 3. Nf3 b6 4. b3 Ba6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. g3 c5 4. Bg2 Bb7 *

[ECO "A43"]

1. Nf3 Nf6 2. d4 c5 3. d5 b5 4. Bg5 Bb7 *

[ECO "A11"]

1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. b3 Bf5 *

[ECO "A12"]

1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. b3 Bf5 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Bf4 Bg4 4. Nbd2 Nf6 *

[ECO "A00"]

1. g3 d5 2. Bg2 Nf6 3. Nf3 Bf5 4. d3 h6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Bb5+ Bd7 4. Bc4 Bg4 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 Nf6 *

[ECO "A53"]

1. c4 Nf6 2. d4 d6 3. Nc3 Bf5 4. f3 e5 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. e4 Nf6 4. Bd3 e6 *

[ECO "A00"]

1. b4 d5 2. Bb2 Bf5 3. Nf3 e6 4. e3 Nf6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bf5 3. c4 e6 4. Nc3 Nf6 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. c4 d6 4. d4 Bg4 *

[ECO "C00"]

1. e4 e6 2. d4 b6 3. Bd3 Bb7 4. Nf3 d6 *

[ECO "A07"]

1. Nf3 d5 2. g3 b6 3. Bg2 Bb7 4. O-O e6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bf5 3. g3 c6 4. Bg2 h6 *

[ECO "A00"]

1. g3 d5 2. Bg2 c6 3. d3 Bg4 4. h3 Bh5 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bf5 3. Nf3 c6 4. Nbd2 e6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. g3 b5 4. Bg2 Bb7 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. e3 Bg4 4. c4 e6 *

[ECO "B11"]

1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. Be2 e6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. Bb2 Bxf3 4. exf3 e6 *

[ECO "A06"]

1. Nf3 d5 2. e3 Bg4 3. c4 dxc4 4. Bxc4 e6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Be2 Qa5+ *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. Bg5 Be7 4. Bxe7 Qxe7 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. Bg5 Be7 4. Bxe7 Qxe7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. c3 Qb6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. dxc5 Qa5+ *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d5 4. exd5 Qxd5 *

[ECO "A17"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O *

[ECO "B22"]

1. e4 c5 2. c3 d6 3. d4 Qc7 4. Be3 Nf6 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Bf4 Qb6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Qc2 Nf6 4. e3 O-O *

[ECO "A22"]

1. c4 e5 2. Nc3 Bb4 3. g3 Nf6 4. Qc2 O-O *

[ECO "E61"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nc3 d6 4. Nge2 c6 *

[ECO "A41"]

1. d4 d6 2. Nf3 g6 3. c4 Bg7 4. Nc3 c5 *

[ECO "C15"]

1. d4 e6 2. e4 d5 3. Nc3 Bb4 4. Bd3 c5 *

[ECO "A00"]

1. g3 e5 2. c4 d6 3. Bg2 f5 4. d4 Be7 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 Be7 4. Nf3 dxe4 *

[ECO "E12"]

1. Nf3 Nf6 2. c4 e6 3. d4 b6 4. Bf4 Bb7 *

[ECO "A40"]

1. d4 e6 2. g3 d5 3. Bg2 g6 4. Nf3 Bg7 *

[ECO "A11"]

1. c4 c6 2. Nc3 Nf6 3. e4 e5 4. Nf3 Bb4 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. g3 c6 4. Nf3 Be7 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 d6 4. Bc4 Be7 *

[ECO "A22"]

1. c4 Nf6 2. Nc3 e5 3. Nf3 d6 4. g3 Be7 *

[ECO "D35"]

1. d4 e6 2. c4 Nf6 3. Nc3 d5 4. g3 Be7 *

[ECO "B07"]

1. e4 g6 2. d4 d6 3. Nc3 Nf6 4. Bc4 Bg7 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. c3 d6 4. Bc4 Nf6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 g6 3. b3 Bg7 4. Bb2 d6 *

[ECO "E60"]

1. c4 Nf6 2. d4 g6 3. Nf3 Bg7 4. e3 d6 *

[ECO "B07"]

1. d4 d6 2. e4 Nf6 3. Nc3 g6 4. Be3 Bg7 *

[ECO "E61"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 d5 *

[ECO "A07"]

1. Nf3 d5 2. g3 g6 3. d4 Bg7 4. Bg2 Nh6 *

[ECO "A40"]

1. d4 e6 2. Nf3 d5 3. Nbd2 Nf6 4. e3 Bd6 *

[ECO "E11"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 d5 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. Qb3 Ba5 4. Nf3 Nf6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. g3 b5 4. e3 a6 *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nf3 b4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. e4 c5 4. e5 h6 *

[ECO "C17"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 *

[ECO "B00"]

1. e4 d6 2. Nc3 c5 3. Nf3 Nf6 4. d4 cxd4 *

[ECO "A40"]

1. d4 c6 2. c4 f5 3. Nc3 Nf6 4. Nf3 e6 *

[ECO "A11"]

1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. Qc2 g6 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. c4 c6 4. Qb3 g6 *

[ECO "D02"]

1. Nf3 Nf6 2. d4 d5 3. g3 g6 4. c4 c6 *

[ECO "A43"]

1. Nf3 Nf6 2. d4 c5 3. d5 g6 4. c4 d6 *

[ECO "B22"]

1. e4 c5 2. c3 d6 3. Nf3 Nf6 4. Bc4 Nxe4 *

[ECO "A43"]

1. e4 e6 2. d4 c5 3. d5 Nf6 4. Nc3 d6 *

[ECO "A34"]

1. c4 c5 2. Nc3 e6 3. g3 d5 4. Bg2 Nf6 *

[ECO "A49"]

1. d4 Nf6 2. g3 g6 3. Nf3 d5 4. c4 dxc4 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. c4 g6 4. cxd5 Nxd5 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 exd5 *

[ECO "D35"]

1. c4 e6 2. d4 d5 3. Nc3 Nf6 4. cxd5 Nxd5 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. b3 d4 *

[ECO "A20"]

1. c4 e5 2. g3 d5 3. Bg2 d4 4. d3 Nf6 *

[ECO "A00"]

1. g3 Nf6 2. Bg2 d5 3. d3 e5 4. c4 dxc4 *

[ECO "A04"]

1. Nf3 f5 2. g3 Nf6 3. Bg2 d6 4. d4 e6 *

[ECO "A40"]

1. d4 e6 2. g3 d5 3. Bg2 f5 4. Bf4 Nf6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. c4 dxc4 4. Nc3 a6 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. Nf3 d6 4. g3 b5 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 Nc6 *

[ECO "D11"]

1. Nf3 d5 2. d4 c6 3. c4 dxc4 4. e4 b5 *

[ECO "B21"]

1. e4 c5 2. f4 d5 3. exd5 Qxd5 4. Nc3 Qd8 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nf3 e6 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. g3 d5 4. Bg2 cxd4 *

[ECO "D07"]

1. c4 Nc6 2. d4 d5 3. cxd5 Qxd5 4. Nf3 e5 *

[ECO "B21"]

1. e4 c5 2. f4 Nc6 3. Nf3 g6 4. Bb5 Bg7 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 g6 4. g3 Bg7 *

[ECO "A04"]

1. Nf3 c5 2. g3 Nc6 3. Nc3 g6 4. Bg2 Bg7 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. Bc4 Be7 4. O-O Nc6 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. Nf3 Bg7 4. Bc4 Nc6 *

[ECO "A28"]

1. Nf3 Nf6 2. c4 Nc6 3. Nc3 e5 4. d4 exd4 *

[ECO "C64"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. c3 d5 *

[ECO "A41"]

1. d4 d6 2. g3 g6 3. Bg2 Bg7 4. Nf3 Nd7 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nc3 d6 4. Nf3 Nd7 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 *

[ECO "C00"]

1. e4 e6 2. Qe2 e5 3. Nf3 Nc6 4. g3 Bc5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nf3 Nc6 4. Nd5 e4 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. d3 Bc5 *

[ECO "A00"]

1. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nf6 4. Nc3 Nc6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Qb3 Nc6 4. e3 Nf6 *

[ECO "C65"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Be7 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 O-O *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. d3 a5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nd7 3. Bf4 Ngf6 4. e3 c6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 Nf6 4. Nc3 e6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c5 3. e3 e6 4. b3 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. f4 Nc6 4. Nf3 Nf6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c5 3. g3 Nc6 4. Bg2 e5 *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. Qe3 Nc6 4. Nf3 Nf6 *

[ECO "C00"]

1. c4 e6 2. e4 c5 3. Nc3 Nc6 4. Nf3 Nge7 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Nf6 4. e5 Nd5 *

[ECO "B20"]

1. e4 c5 2. b3 Nf6 3. e5 Nd5 4. Bb2 Nc6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 Nf6 4. Bb5 Nd4 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c5 4. O-O Nc6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c5 3. g3 Nc6 4. Bg2 d6 *

[ECO "B20"]

1. e4 c5 2. b3 Nc6 3. Bb2 d6 4. Nc3 Nf6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Nf6 4. Bxc6 dxc6 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 d5 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 d6 3. d4 Nc6 4. d5 Ne5 *

[ECO "A06"]

1. Nf3 d5 2. e3 Nc6 3. d4 Nf6 4. c4 e6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 d5 *

[ECO "A00"]

1. g3 e5 2. c4 Nc6 3. Nc3 f5 4. Bg2 Nf6 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. a3 d5 *

[ECO "A28"]

1. c4 Nf6 2. Nf3 Nc6 3. e3 e5 4. Nc3 d6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. g3 d6 4. Nf3 Nc6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d6 3. Nf3 Nbd7 4. Nbd2 e5 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. Bd3 e5 4. c3 Nbd7 *

[ECO "D06"]

1. c4 Nf6 2. d4 d5 3. e3 e6 4. Nc3 Nbd7 *

[ECO "A41"]

1. d4 d6 2. Nf3 Nf6 3. Bg5 Nbd7 4. e3 h6 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Nc3 g6 4. Bg2 Nge7 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. g3 Nc6 *

[ECO "B32"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 *

[ECO "C62"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. Nc3 a6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 g6 4. Bxc6 bxc6 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. e3 c6 4. Nf3 Nd7 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 g6 4. d4 cxd4 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. Nc3 g6 4. d4 cxd4 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 g6 4. d4 cxd4 *

[ECO "A30"]

1. c4 c5 2. g3 Nc6 3. Bg2 g6 4. e3 d6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nf3 Nc6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c4 Nc6 4. d4 cxd4 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. e3 c5 4. Nbd2 Nc6 *

[ECO "B20"]

1. e4 c5 2. Bc4 e6 3. Nc3 Nc6 4. f4 d6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. e3 g6 4. d4 Nc6 *

[ECO "A20"]

1. c4 e5 2. Nf3 e4 3. Nd4 Nc6 4. Nc2 d5 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. Nf3 Nc6 4. O-O e4 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nc6 *

[ECO "C46"]

1. e4 Nc6 2. Nf3 e5 3. Nc3 d6 4. d4 exd4 *

[ECO "A21"]

1. c4 e5 2. Nc3 f5 3. d4 exd4 4. Qxd4 Nc6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bf5 3. Bg2 Nc6 4. O-O Nf6 *

[ECO "B11"]

1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. h3 Bxf3 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 Nc6 4. e3 Bg4 *

[ECO "A41"]

1. d4 d6 2. Nf3 Nf6 3. Nc3 Bf5 4. Bg5 Nbd7 *

[ECO "A30"]

1. c4 c5 2. Nf3 b6 3. Nc3 Bb7 4. e4 Nc6 *

[ECO "B20"]

1. e4 c5 2. b3 Nc6 3. Bb2 d6 4. Bb5 Bd7 *

[ECO "A07"]

1. g3 d5 2. Nf3 Bg4 3. Bg2 Nd7 4. c4 c6 *

[ECO "C62"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. c3 Bd7 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 Nd7 4. Nc3 Bxf3 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 Nd7 4. g3 Bxf3 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 b6 3. d4 Bb7 4. d5 e6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. g3 b6 4. Bg2 Bb7 *

[ECO "E12"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. Nc3 Bb4 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 *

[ECO "A11"]

1. c4 c6 2. Nf3 Nf6 3. g3 d5 4. Qc2 Bg4 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. d4 Bg4 4. f3 Bf5 *

[ECO "D04"]

1. d4 Nf6 2. Nf3 d5 3. e3 Bf5 4. Nbd2 e6 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. e3 e6 4. Nf3 Nf6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 Bf5 4. Bb2 e6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 Bf5 4. Nc3 e6 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. Bg5 h6 4. Bh4 Bf5 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. d3 Bg4 4. Bg2 e6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Be2 e6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 Qb6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 Bb4 *

[ECO "D01"]

1. d4 d5 2. Bg5 Nf6 3. Nc3 c6 4. e3 Qb6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 Nf6 4. d4 Qa5 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Bc4 Nf6 *

[ECO "A00"]

1. b4 d5 2. Bb2 Qd6 3. a3 e5 4. e3 Nf6 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 Bc5 4. Nf3 O-O *

[ECO "C26"]

1. e4 e5 2. Nc3 Nf6 3. g3 Bc5 4. Bg2 O-O *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Bc4 O-O *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. Bf4 Bg7 4. Nc3 O-O *

[ECO "E60"]

1. c4 Nf6 2. d4 g6 3. f3 Bg7 4. e4 O-O *

[ECO "C00"]

1. e4 e6 2. Nf3 b6 3. d4 Bb4+ 4. c3 Be7 *

[ECO "A10"]

1. c4 g6 2. e4 c5 3. Nf3 Bg7 4. d4 cxd4 *

[ECO "A07"]

1. Nf3 d5 2. g3 g6 3. c4 c6 4. Qc2 Bg7 *

[ECO "A40"]

1. d4 g6 2. c4 Bg7 3. e4 c6 4. Nf3 d5 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. Bc4 Bg7 4. c3 d6 *

[ECO "A40"]

1. d4 g6 2. Nf3 Bg7 3. g3 c5 4. d5 d6 *

[ECO "B20"]

1. e4 c5 2. d3 e6 3. Nf3 d5 4. Nbd2 Bd6 *

[ECO "A40"]

1. d4 g6 2. e4 d6 3. c4 e5 4. d5 Bg7 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. g3 g6 4. Bg2 Bg7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Nc3 Bb4 *

[ECO "D37"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 dxc4 *

[ECO "E60"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 c5 *

[ECO "E70"]

1. c4 Nf6 2. d4 g6 3. Nc3 Bg7 4. e4 c5 *

[ECO "C23"]

1. e4 e5 2. Bc4 d6 3. Nf3 Be7 4. d3 Nf6 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nf3 e6 4. Nc3 Be7 *

[ECO "E60"]

1. d4 Nf6 2. Nf3 g6 3. c4 d6 4. b3 Bg7 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. e3 d6 4. Nc3 Bg7 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. c3 d6 *

[ECO "D80"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. e3 Bg7 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 g6 4. Nc3 Bg7 *

[ECO "C65"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 *

[ECO "C15"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Qg4 Nf6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Nd2 d5 *

[ECO "A17"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 Bb4 4. g4 h6 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. Qc2 Nf6 4. a3 Bxc3 *

[ECO "A81"]

1. d4 e6 2. g3 f5 3. Bg2 Nf6 4. Nh3 Be7 *

[ECO "A80"]

1. d4 f5 2. Nf3 g6 3. Bf4 Nf6 4. e3 Bg7 *

[ECO "D22"]

1. d4 d5 2. c4 dxc4 3. Nf3 a6 4. a4 Nf6 *

[ECO "D37"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 a6 *

[ECO "E12"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. a3 Ne4 *

[ECO "A10"]

1. c4 b6 2. b3 c5 3. Nf3 Nf6 4. e3 e6 *

[ECO "A29"]

1. c4 Nf6 2. g3 e5 3. Nf3 Nc6 4. Nc3 Bc5 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 b6 3. g3 c5 4. b3 g6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Bg5 c5 4. Nf3 cxd4 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. c3 cxd4 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c3 Nf6 4. e5 Nd5 *

[ECO "B29"]

1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. Nc3 Nxc3 *

[ECO "A81"]

1. d4 f5 2. g3 d6 3. Bg2 Nf6 4. d5 c6 *

[ECO "A11"]

1. c4 c6 2. Nc3 d5 3. e3 Nf6 4. Nf3 g6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. d3 g6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. O-O g6 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. Nc3 c6 4. Bc4 Nf6 *

[ECO "D03"]

1. d4 d5 2. Nf3 Nf6 3. Bg5 c5 4. Bxf6 gxf6 *

[ECO "B20"]

1. e4 c5 2. g3 d5 3. Bg2 dxe4 4. Bxe4 Nf6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. b3 d5 4. cxd5 Nxd5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. e3 d5 *

[ECO "B22"]

1. e4 c5 2. c3 d6 3. d4 Nf6 4. Bd3 e6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 e6 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. b3 Nf6 4. e3 c5 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 Nf6 4. Nf3 c5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Be7 4. d4 d6 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 g6 *

[ECO "B07"]

1. d4 Nf6 2. Nc3 g6 3. e4 d6 4. Bg5 h6 *

[ECO "C20"]

1. e4 e5 2. d3 Nf6 3. Nf3 d6 4. g3 g6 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. g3 g6 4. d4 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. Nd2 h6 4. Bh4 d6 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 d4 *

[ECO "D35"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. g3 dxc4 *

[ECO "C00"]

1. d4 e6 2. e4 d5 3. Bd3 dxe4 4. Bxe4 Nf6 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e4 Nf6 4. Nc3 e5 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 e5 4. dxe5 dxe5 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c6 3. Nc3 d5 4. e3 a6 *

[ECO "A81"]

1. d4 f5 2. g3 d6 3. Bg2 Nf6 4. Nh3 e5 *

[ECO "A40"]

1. d4 Nc6 2. d5 Nb8 3. Nf3 Nf6 4. Nc3 e6 *

[ECO "C34"]

1. e4 e5 2. f4 exf4 3. Nf3 Nf6 4. e5 Nh5 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 a6 4. Bd3 c5 *

[ECO "D31"]

1. c4 e6 2. Nc3 d5 3. d4 a6 4. cxd5 exd5 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. Nc3 d4 4. Ne2 c5 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. g3 c6 4. Bg2 dxc4 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. Nc3 e5 4. dxe5 d4 *

[ECO "B13"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 e6 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 d6 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. Nf3 e4 4. Nd4 c5 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Nf3 Nc6 *

[ECO "C00"]

1. e4 e6 2. Nc3 c5 3. Qe2 Nc6 4. Nf3 Be7 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. Nf3 Nc6 4. g3 Be7 *

[ECO "C10"]

1. d4 e6 2. e4 d5 3. Nc3 Be7 4. Bd3 Nc6 *

[ECO "C03"]

1. d4 e6 2. e4 d5 3. Nd2 Be7 4. Ngf3 Nc6 *

[ECO "C53"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 d6 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 Nd7 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Bg2 g6 4. d3 Bg7 *

[ECO "E12"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. a3 Bb7 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nf3 Bxc3 4. bxc3 Nc6 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Nc3 Bb4 4. Bg2 Bxc3 *

[ECO "C64"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. c3 f5 *

[ECO "A13"]

1. c4 e6 2. d4 Nc6 3. e3 Nf6 4. Nf3 Bb4+ *

[ECO "A00"]

1. a4 e5 2. e4 Nf6 3. Nc3 Nc6 4. Nf3 Bb4 *

[ECO "A15"]

1. c4 Nf6 2. g3 e5 3. Bg2 Nc6 4. Nf3 Be7 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 Nc6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 a6 4. e4 Nc6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. Bb5 a6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. g3 b5 4. Bg2 Nc6 *

[ECO "A00"]

1. g3 c5 2. Nf3 g6 3. Bg2 Bg7 4. c4 Nc6 *

[ECO "A00"]

1. g3 c5 2. c4 Nf6 3. Bg2 Nc6 4. Nc3 b6 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nf3 c6 4. Nc3 Nbd7 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. O-O Nbd7 *

[ECO "B21"]

1. e4 c5 2. f4 d5 3. exd5 Nf6 4. Bb5+ Nbd7 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. g3 Nc6 4. Bg2 Nf6 *

[ECO "B20"]

1. e4 c5 2. c4 Nc6 3. Nf3 Nf6 4. Nc3 e5 *

[ECO "B01"]

1. c4 c6 2. e4 d5 3. exd5 Nf6 4. dxc6 Nxc6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. g3 Nc6 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. d3 Nc6 4. Nf3 d6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 Nc6 4. Bb2 g6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 g6 3. g3 Bg7 4. Bb2 O-O *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. Qa4+ Nc6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 d6 3. d4 Nc6 4. Nc3 g6 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 Nc6 3. d4 d5 4. g3 Ne4 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nc6 3. e4 Nf6 4. Nf3 d6 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. Bd3 e5 4. d5 Nbd7 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d6 3. d4 Nbd7 4. Bg2 e5 *

[ECO "D05"]

1. d4 Nf6 2. Nf3 e6 3. e3 d5 4. Bd3 Nbd7 *

[ECO "D01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 Nbd7 4. f3 h6 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Bb5 e4 *

[ECO "A20"]

1. c4 e5 2. Nf3 e4 3. Nd4 Nc6 4. e3 Nf6 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O g6 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. Nc3 a6 *

[ECO "A40"]

1. d4 e6 2. Nf3 Nc6 3. e4 d5 4. e5 b6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. g3 Nd7 4. Bg2 b5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. b3 d6 4. Bb5+ Nd7 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. c3 d6 4. d4 Nd7 *

[ECO "B27"]

1. e4 g6 2. Nf3 c5 3. c3 d6 4. d4 Nd7 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. Nc3 dxe4 4. Nxe4 Nd7 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. Bc4 Nc6 4. O-O e6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 Nd4 4. Nxd4 cxd4 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 c5 4. Nxc4 Nc6 *

[ECO "B13"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nc6 *

[ECO "B32"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Be2 d5 *

[ECO "A04"]

1. Nf3 c5 2. c4 d6 3. d4 cxd4 4. Nxd4 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. d4 cxd4 4. Qxd4 Nc6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. Bf4 c5 4. c3 Nc6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. Nc3 e5 4. d3 d6 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. g3 Nc6 4. Nf3 d6 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. f4 Qa5 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. g3 Nc6 4. Nf3 d6 *

[ECO "A40"]

1. d4 Nc6 2. Nf3 d6 3. d5 Ne5 4. Nxe5 dxe5 *

[ECO "A20"]

1. c4 e5 2. g3 g6 3. d4 d6 4. Nc3 Nc6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 d5 4. Bb5 dxe4 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. c4 e5 4. d5 Nd7 *

[ECO "C63"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. Nc3 Nd4 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Nc6 4. O-O Bg4 *

[ECO "A06"]

1. b3 d5 2. Nf3 Nf6 3. g3 Bg4 4. Bb2 Nbd7 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. g3 Bg4 4. Bg2 Nd7 *

[ECO "A10"]

1. c4 f5 2. g3 Nf6 3. Bg2 g6 4. d4 Bg7 *

[ECO "D06"]

1. d4 d5 2. c4 Bf5 3. Nf3 e6 4. Nc3 Nc6 *

[ECO "D00"]

1. d4 d5 2. g3 Bf5 3. c3 e6 4. Nf3 Nc6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nc6 3. d4 Bf5 4. Bg2 e6 *

[ECO "A00"]

1. g3 e5 2. Bg2 Nc6 3. d3 d5 4. Nf3 Bg4 *

[ECO "C50"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 4. Nc3 Bg4 *

[ECO "C46"]

1. e4 e5 2. Nc3 Nc6 3. Nf3 d6 4. d4 Bg4 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 Nd7 4. h3 Bxf3 *

[ECO "C16"]

1. e4 e6 2. d4 d5 3. e5 Bb4+ 4. Nc3 Bd7 *

[ECO "A40"]

1. d4 e6 2. Nf3 Nf6 3. c3 b6 4. Bg5 Bb7 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Nf6 4. c4 dxc4 *

[ECO "A49"]

1. d4 Nf6 2. g3 g6 3. Nf3 b6 4. c4 Bb7 *

[ECO "A12"]

1. Nf3 Nf6 2. c4 c6 3. b3 d5 4. g3 Bg4 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 c6 3. c4 d6 4. d4 Bg4 *

[ECO "D24"]

1. d4 d5 2. c4 Nf6 3. Nc3 dxc4 4. Nf3 Bf5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d5 4. Nd2 Bf5 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. e4 Nf6 4. Nbd2 e6 *

[ECO "A00"]

1. Nc3 d5 2. Nf3 Nf6 3. d4 Bf5 4. e3 e6 *

[ECO "A01"]

1. b3 d5 2. Bb2 Bf5 3. e3 e6 4. Nf3 Nf6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. Nc3 Bf5 4. Nh4 Bd7 *

[ECO "D22"]

1. d4 d5 2. c4 dxc4 3. Nf3 a6 4. e3 Bg4 *

[ECO "A00"]

1. g3 e5 2. c4 Nf6 3. Bg2 Nc6 4. Nc3 Bb4 *

[ECO "B40"]

1. Nf3 c5 2. e4 e6 3. b3 b6 4. c4 Bb7 *

[ECO "B27"]

1. e4 c5 2. Nf3 b6 3. c4 Bb7 4. Nc3 e6 *

[ECO "B20"]

1. e4 c5 2. b3 b6 3. Bb2 Bb7 4. Nc3 e6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Nf3 Bb7 4. Nc3 f5 *

[ECO "B10"]

1. e4 c6 2. Nc3 d5 3. Nf3 g6 4. d4 Bg4 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 c6 4. Ne5 Bh5 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 Bxf3 4. exf3 c6 *

[ECO "D06"]

1. d4 d5 2. c4 Bf5 3. cxd5 c6 4. Nc3 cxd5 *

[ECO "B13"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c3 Bf5 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nf3 Bg4 4. Be2 Nf6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. g3 Qb6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. d5 Qb6 4. Nc3 Qxb2 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. h4 c5 4. dxc5 Qa5+ *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. a4 Qa5 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. g3 Qc7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. Nd2 Qb6 4. c3 dxe4 *

[ECO "E10"]

1. c4 e6 2. d4 Nf6 3. Nf3 Be7 4. g3 O-O *

[ECO "A00"]

1. b4 g6 2. Bb2 Nf6 3. e3 Bg7 4. Nf3 O-O *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. c4 c5 4. d5 e5 *

[ECO "E70"]

1. c4 Nf6 2. d4 g6 3. Nc3 Bg7 4. e4 d6 *

[ECO "E32"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. d4 Bb4+ 4. Bd2 Bxd2+ *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. f3 g6 4. c3 Bg7 *

[ECO "B12"]

1. e4 c6 2. d4 g6 3. c3 d5 4. Nd2 Bg7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. Nd2 g6 4. h3 Bg7 *

[ECO "B10"]

1. e4 c6 2. Nc3 g6 3. d3 d5 4. g3 Bg7 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. Nc3 c6 4. g3 Bg7 *

[ECO "A30"]

1. c4 c5 2. Nf3 g6 3. d4 Bg7 4. e4 d6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. Nf3 f5 4. g3 Be7 *

[ECO "C16"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Bxc3+ *

[ECO "A81"]

1. d4 f5 2. g3 g6 3. Bg2 Nf6 4. Nh3 Bg7 *

[ECO "C15"]

1. d4 e6 2. e4 d5 3. Nc3 Bb4 4. Bd2 dxe4 *

[ECO "A10"]

1. c4 g6 2. e4 e5 3. Nf3 Bg7 4. d4 exd4 *

[ECO "A21"]

1. c4 e5 2. Nc3 g6 3. g3 Bg7 4. Nf3 f5 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bh4 g5 4. e4 Bg7 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nd2 Bg7 4. e4 fxe4 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 a5 4. Qb3 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. c3 g6 3. Nf3 Bg7 4. Bf4 b6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 c6 4. d4 Bg7 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 c6 3. d4 g6 4. Bg2 Bg7 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. Nf3 Nf6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d4 cxd4 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. c3 Bg7 4. Bg5 c5 *

[ECO "A43"]

1. d4 Nf6 2. Nf3 c5 3. d5 g6 4. Nc3 Bg7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 d5 4. e3 Be7 *

[ECO "D06"]

1. c4 Nf6 2. d4 d5 3. e3 e6 4. Nc3 Be7 *

[ECO "E01"]

1. d4 e6 2. g3 Nf6 3. Bg2 d5 4. c4 Be7 *

[ECO "D31"]

1. c4 e6 2. d4 d5 3. Nc3 Bb4 4. e3 Ne7 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. d5 Bg7 4. Nc3 d6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 d6 *

[ECO "C28"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 Nc6 4. d3 Na5 *

[ECO "E61"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. f3 d6 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Nc3 d6 4. Bf4 Bg7 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. h4 Nf6 4. Nc3 Bg7 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. h3 Bg7 *

[ECO "A04"]

1. Nf3 g6 2. e4 Bg7 3. d4 d6 4. h3 Nf6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Nc3 d5 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. b3 Nf6 4. e3 Bd6 *

[ECO "D05"]

1. d4 Nf6 2. Nf3 e6 3. e3 d5 4. Bd3 Bd6 *

[ECO "D03"]

1. Nf3 d5 2. d4 Nf6 3. Bg5 e6 4. Nc3 Bb4 *

[ECO "C12"]

1. d4 e6 2. e4 d5 3. Nc3 Nf6 4. Bg5 Bb4 *

[ECO "A17"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 Bb4 4. a3 Bxc3 *

[ECO "A00"]

1. g3 g6 2. c4 Bg7 3. Bg2 e6 4. Nc3 Ne7 *

[ECO "B06"]

1. e4 g6 2. d4 e6 3. Nc3 Bg7 4. Nf3 Ne7 *

[ECO "A21"]

1. c4 e5 2. Nc3 g6 3. Nf3 Bg7 4. g3 Ne7 *

[ECO "A00"]

1. g3 f5 2. Bg2 Nf6 3. c4 g6 4. d3 Bg7 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. c4 a6 4. Nc3 Nf6 *

[ECO "D37"]

1. c4 Nf6 2. d4 e6 3. Nc3 d5 4. Nf3 b6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. a3 Nf6 4. Nc3 d5 *

[ECO "A45"]

1. d4 Nf6 2. c3 e6 3. Bg5 b6 4. e4 h6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 b6 4. e4 h6 *

[ECO "E70"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Qc2 bxc4 *

[ECO "E00"]

1. c4 Nf6 2. d4 e6 3. Qc2 c5 4. Nf3 cxd4 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. c3 c6 *

[ECO "A31"]

1. Nf3 Nf6 2. c4 c5 3. d4 cxd4 4. Nxd4 g6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. h4 c5 4. dxc5 Nxg5 *

[ECO "E60"]

1. c4 Nf6 2. d4 g6 3. g3 c5 4. d5 d6 *

[ECO "D01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 c5 4. Bxf6 gxf6 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 d6 *

[ECO "A45"]

1. d4 Nf6 2. Nc3 d5 3. f3 c5 4. e4 dxe4 *

[ECO "D53"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. c4 c5 4. cxd5 cxd4 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. exd5 cxd5 4. d4 Nf6 *

[ECO "B13"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Be3 Nf6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 c5 4. c3 e6 *

[ECO "B29"]

1. e4 c5 2. Nf3 Nf6 3. Nc3 e6 4. d4 d5 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. Nge2 Nf6 4. g3 d5 *

[ECO "A82"]

1. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. f3 d5 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 e6 *

[ECO "A85"]

1. d4 f5 2. c4 Nf6 3. Nc3 d6 4. g3 g6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. Bg5 g6 4. Nc3 d5 *

[ECO "D70"]

1. c4 Nf6 2. d4 g6 3. g3 d5 4. cxd5 Nxd5 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d5 3. d4 g6 4. Bg5 Ne4 *

[ECO "C11"]

1. d4 e6 2. e4 d5 3. Nc3 Nf6 4. exd5 Nxd5 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 dxe4 *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Nf6 *

[ECO "A00"]

1. g3 d5 2. Bg2 e5 3. c3 Nf6 4. Nf3 e4 *

[ECO "E60"]

1. d4 g6 2. c4 Nf6 3. Be3 d5 4. Bd2 Nfd7 *

[ECO "C16"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Qd7 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. Bg5 Ne4 4. Bf4 e6 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. Bg2 Nf6 4. d4 exd4 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. Nc3 d6 4. d4 cxd4 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. Nc3 d6 4. g3 e5 *

[ECO "C00"]

1. e4 e6 2. d4 a6 3. Nf3 d5 4. exd5 exd5 *

[ECO "C00"]

1. e4 e6 2. Nc3 c5 3. Nf3 a6 4. Be2 b5 *

[ECO "B20"]

1. e4 c5 2. Ne2 e6 3. Nbc3 a6 4. g3 b5 *

[ECO "C10"]

1. d4 e6 2. e4 d5 3. Nc3 dxe4 4. Nxe4 b6 *

[ECO "B10"]

1. e4 c6 2. Nf3 g6 3. c4 d5 4. exd5 cxd5 *

[ECO "B12"]

1. e4 c6 2. d4 d6 3. f4 d5 4. e5 h5 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. Bg5 h6 4. Bxf6 Qxf6 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. f4 d5 4. Nf3 dxe4 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 cxd4 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. c4 c6 4. cxd5 cxd5 *

[ECO "D11"]

1. d4 d5 2. c4 c6 3. Nf3 e6 4. Bg5 f6 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. c4 e5 4. Nc3 exd4 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 f6 4. e3 e5 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Nf3 Qxd5 4. Be2 Nc6 *

[ECO "B20"]

1. e4 c5 2. g3 d5 3. exd5 Qxd5 4. Nf3 Nc6 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. Nf3 Nc6 *

[ECO "E46"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. e3 O-O *

[ECO "E11"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 c5 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. d3 g6 4. g3 Bg7 *

[ECO "A00"]

1. g3 c5 2. Bg2 Nc6 3. Nf3 g6 4. c3 Bg7 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Be7 4. Bd3 Nc6 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nc3 d6 4. Nge2 Nc6 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 Nc6 4. Nf3 Bb4+ *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 d5 4. Bb5 Bd6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. Bf4 Nc6 4. e3 Bd6 *

[ECO "C30"]

1. e4 e5 2. f4 Bc5 3. Nf3 d6 4. Nc3 Nc6 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nf3 d6 4. Be2 Nd7 *

[ECO "A10"]

1. c4 g6 2. e4 e5 3. Nf3 Bg7 4. Nc3 Nc6 *

[ECO "E60"]

1. Nf3 Nf6 2. c4 g6 3. d4 d6 4. g3 Bg7 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Bb5 Bb4 *

[ECO "C57"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 Bc5 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. d3 Be7 *

[ECO "C64"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nge7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. Nc3 Nbd7 4. e4 c6 *

[ECO "A41"]

1. d4 d6 2. e4 Nf6 3. f3 c5 4. c3 Nbd7 *

[ECO "D01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 Nbd7 4. f3 c5 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. e3 Nf6 4. Bd3 Nc6 *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. Nf3 Nc6 4. g3 Nf6 *

[ECO "B21"]

1. e4 c5 2. f4 Nc6 3. Nf3 e6 4. Bb5 Nge7 *

[ECO "A04"]

1. Nf3 c5 2. g3 g6 3. Bg2 Bg7 4. O-O Nc6 *

[ECO "A34"]

1. c4 c5 2. Nc3 Nf6 3. e4 d6 4. g3 Nc6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. g3 Nf6 4. Nc3 Nc6 *

[ECO "A00"]

1. a3 Nc6 2. d4 d5 3. Nf3 Nf6 4. e3 g6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. Bf4 Nc6 4. e3 Nh5 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. g3 Nc6 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Nf3 Nc6 4. d3 d5 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. g3 d5 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. a3 d5 *

[ECO "A13"]

1. c4 e6 2. Nc3 b6 3. e4 Bb7 4. d4 Bb4 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 Nc6 3. d4 d6 4. Nc3 e6 *

[ECO "A45"]

1. d4 Nf6 2. c3 d6 3. Bg5 Nbd7 4. Nd2 e5 *

[ECO "A41"]

1. d4 d6 2. e4 Nf6 3. f3 Nbd7 4. c4 e5 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. Bd3 e5 4. Nf3 Nbd7 *

[ECO "B07"]

1. d4 d6 2. e4 Nf6 3. Nc3 Nbd7 4. g4 h6 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Bg2 g6 4. e3 Nf6 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 h6 4. Nc3 Nc6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. c3 e5 4. Bb5 a6 *

[ECO "C70"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 f5 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O *

[ECO "B10"]

1. c4 c6 2. e4 e5 3. Nf3 d6 4. d4 Nd7 *

[ECO "A04"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. d4 cxd4 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. Nc3 Nd4 4. Ne5 g6 *

[ECO "B20"]

1. e4 c5 2. g3 Nc6 3. Bg2 d6 4. f4 g6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. g3 Nc6 4. d4 cxd4 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. b3 Nc6 4. Bb2 d5 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 d6 *

[ECO "D31"]

1. d4 e6 2. c4 d5 3. Nc3 c6 4. e4 Bb4 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 g6 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. Nf3 Nc6 4. d3 g6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. d4 Nc6 4. Nf3 g6 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. c3 e5 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. Nc3 Nc6 4. Bc4 Na5 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. Nf3 Nc6 4. d3 f6 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. c4 Nd7 4. Qb3 Qc8 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 Nc6 3. d4 d5 4. Nc3 Bf5 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 Bg4 4. Bb2 Nc6 *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. Bf4 d6 4. e3 Bg7 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 Nc6 4. Nc3 Bg4 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 d6 3. c4 Nc6 4. Nc3 Bg4 *

[ECO "A06"]

1. Nf3 d5 2. Nc3 Bf5 3. d4 Nf6 4. Bg5 Nbd7 *

[ECO "D01"]

1. d4 d5 2. Nc3 Nf6 3. f3 Bf5 4. Bg5 Nbd7 *

[ECO "A12"]

1. Nf3 d5 2. c4 c6 3. b3 Bg4 4. e3 Nd7 *

[ECO "A06"]

1. Nf3 d5 2. b3 c5 3. e3 Nc6 4. Bb2 Bg4 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. e3 Be6 4. Na3 Nc6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. e4 Nc6 4. Bb5 e5 *

[ECO "C23"]

1. e4 e5 2. Bc4 d6 3. Nf3 Nc6 4. O-O Bg4 *

[ECO "C62"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. Nc3 Bd7 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. e4 h6 4. Bxf6 Qxf6 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. Bg2 Nc6 4. Nc3 Bd7 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. c4 Nd7 4. d5 e5 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nf3 Bg4 4. Be2 Nc6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Bb5+ Bd7 4. Bc4 b5 *

[ECO "A34"]

1. c4 c5 2. Nc3 b6 3. Nf3 Bb7 4. e4 Nf6 *

[ECO "A47"]

1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. d4 c5 *

[ECO "A17"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 b6 4. b3 Bb7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. g3 b5 4. a3 Bb7 *

[ECO "A04"]

1. Nf3 b6 2. g3 Bb7 3. Bg2 f5 4. O-O Nf6 *

[ECO "B21"]

1. e4 c5 2. f4 d5 3. exd5 Nf6 4. Bb5+ Bd7 *

[ECO "A50"]

1. d4 Nf6 2. c4 c6 3. Bf4 d5 4. e3 Bf5 *

[ECO "D00"]

1. Nc3 d5 2. d4 Nf6 3. Bf4 c6 4. e3 Bf5 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 c6 3. Bf4 d5 4. h3 Bf5 *

[ECO "A09"]

1. Nf3 d5 2. c4 c6 3. e3 Nf6 4. b3 Bg4 *

[ECO "A41"]

1. d4 d6 2. Nf3 Nf6 3. c4 Bg4 4. e3 c6 *

[ECO "D02"]

1. Nf3 Nf6 2. d4 d5 3. g3 Bf5 4. Bg2 g6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. e3 Be6 4. Na3 Nf6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. d4 Bg4 4. Be2 Bxe2 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d6 3. d4 d5 4. Bf4 Bf5 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Nc3 Nc6 4. Nf3 Bb4 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Nf3 Nxd5 4. d4 Bf5 *

[ECO "D04"]

1. d4 Nf6 2. Nf3 d5 3. e3 Bf5 4. c4 e6 *

[ECO "D04"]

1. d4 Nf6 2. Nf3 d5 3. e3 Bf5 4. Bd3 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Bf5 4. d3 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Bg4 4. O-O e6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Bb5+ Bd7 4. Be2 Nxd5 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. c3 b5 4. d4 Bb7 *

[ECO "C00"]

1. c4 e6 2. e4 c5 3. Nc3 b6 4. g3 Bb7 *

[ECO "B23"]

1. e4 c5 2. Nc3 b6 3. g3 Bb7 4. Bg2 e6 *

[ECO "D00"]

1. d4 d5 2. Bg5 c6 3. Nc3 h6 4. Bh4 Bf5 *

[ECO "C08"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 *

[ECO "C50"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Nc3 Bc5 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Bf4 Bf5 4. c4 dxc4 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. Nc3 Bg4 4. h3 Bxf3 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. g3 Bg4 4. Bg2 e6 *

[ECO "A07"]

1. g3 d5 2. Nf3 c6 3. Bg2 Bg4 4. O-O e6 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. e5 Bf5 4. Nf3 e6 *

[ECO "C01"]

1. d4 e6 2. e4 d5 3. exd5 exd5 4. Nf3 Bf5 *

[ECO "D00"]

1. d4 d5 2. Bg5 c6 3. e3 Qb6 4. Qc1 Bf5 *

[ECO "A04"]

1. Nf3 g6 2. d4 Bg7 3. g3 c5 4. c3 Qa5 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 Qe7 4. e4 d5 *

[ECO "A13"]

1. c4 e6 2. d4 c5 3. Nf3 Nf6 4. g3 Qa5+ *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. c4 c6 4. Nc3 d6 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. e3 c5 4. dxc5 Qa5+ *

[ECO "A50"]

1. d4 Nf6 2. c4 c6 3. Bf4 Qb6 4. Qd2 Ne4 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Bg5 Qb6 4. b3 Nf6 *

[ECO "D00"]

1. d4 d5 2. Bg5 c6 3. Nf3 Nf6 4. e3 Qb6 *

[ECO "A45"]

1. d4 Nf6 2. Nc3 d5 3. Nf3 c6 4. Bf4 Qb6 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. g3 Nf6 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. Nxd5 Qxd5 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 Qe7 4. d4 d6 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bh4 c5 4. e3 Qb6 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. d4 Qe7 4. Nc3 c6 *

[ECO "A07"]

1. Nf3 d5 2. g3 g6 3. d4 Nf6 4. Bg2 c6 *

[ECO "A40"]

1. d4 e6 2. Nf3 d5 3. Bf4 c5 4. c3 Qb6 *

[ECO "B22"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 e5 *

[ECO "B54"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Qc7 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. c3 c5 4. Bg5 Qc7 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. b4 Bg7 4. Bb2 O-O *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Be2 d6 4. Nf3 a6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 a5 4. e4 d5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Ba5 4. b4 c6 *

[ECO "A40"]

1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 f5 *

[ECO "B10"]

1. c4 c6 2. e4 g6 3. Nc3 Bg7 4. g3 c5 *

[ECO "B05"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 *

[ECO "A07"]

1. Nf3 d5 2. g3 g6 3. d4 Bg7 4. Bg2 c6 *

[ECO "A40"]

1. d4 g6 2. Nf3 Bg7 3. e4 c6 4. Bd3 d6 *

[ECO "A08"]

1. Nf3 d5 2. g3 c5 3. Bg2 g6 4. O-O Bg7 *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. Nc3 Bc5 4. Nf3 d6 *

[ECO "C00"]

1. e4 e6 2. d3 c5 3. g3 d5 4. Nd2 Bd6 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. Nc3 f5 4. d4 Be7 *

[ECO "A41"]

1. d4 d6 2. g3 g6 3. Bg2 Bg7 4. Nf3 f5 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. g3 g6 4. b4 Bg7 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c6 3. d4 g6 4. g3 Bg7 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. c4 e5 4. d5 Bh6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. g3 g6 4. d4 Bg7 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. e4 d6 4. f4 e5 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 e6 *

[ECO "A07"]

1. Nf3 d5 2. g3 g6 3. c4 e6 4. d4 Bg7 *

[ECO "C15"]

1. d4 e6 2. e4 d5 3. Nc3 Bb4 4. a3 Bxc3+ *

[ECO "C16"]

1. d4 e6 2. e4 d5 3. e5 Bb4+ 4. Nc3 f6 *

[ECO "E11"]

1. d4 e6 2. c4 Nf6 3. Nf3 Bb4+ 4. Nbd2 a5 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. b4 a5 4. b5 Bg7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. g3 b5 4. Bg2 Be7 *

[ECO "B06"]

1. d4 d6 2. e4 g6 3. Nc3 Bg7 4. Bg5 Nf6 *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. Bg5 Bg7 4. c3 b6 *

[ECO "A17"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 Bb4 4. Qb3 c5 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. e3 Be7 *

[ECO "E61"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Bg5 c5 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. Bc4 Be7 4. O-O Nf6 *

[ECO "D30"]

1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. Bg5 Be7 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Nc3 e6 4. Bg5 Be7 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 d5 3. Nc3 e6 4. e3 Be7 *

[ECO "D00"]

1. d4 d5 2. Nc3 Nf6 3. h4 e6 4. a3 Be7 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. e3 d6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 g6 3. b4 Bg7 4. Bb2 d6 *

[ECO "E60"]

1. Nf3 Nf6 2. d4 g6 3. c4 d6 4. Bf4 Bg7 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nf3 d6 4. Be3 Nf6 *

[ECO "D00"]

1. d4 d5 2. Bg5 g6 3. Nc3 Bg7 4. e3 Nf6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Nf6 3. e3 g6 4. Nf3 Bg7 *

[ECO "A00"]

1. g3 Nf6 2. Bg2 d5 3. d3 g6 4. Nd2 Bg7 *

[ECO "A00"]

1. g3 d5 2. f4 g6 3. Nf3 Bg7 4. Bg2 Nh6 *

[ECO "D00"]

1. Nc3 d5 2. d4 Nf6 3. Nf3 e6 4. Bf4 Bb4 *

[ECO "B32"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 *

[ECO "A40"]

1. d4 e6 2. Nc3 d5 3. Nf3 Nf6 4. g3 Bb4 *

[ECO "E60"]

1. c4 Nf6 2. d4 g6 3. Nf3 Bg7 4. g3 e6 *

[ECO "E70"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 e6 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. c4 e6 4. Bg5 Bb4+ *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. c4 e6 4. Bg5 Be7 *

[ECO "C35"]

1. e4 e5 2. f4 exf4 3. Nf3 Be7 4. Bc4 Nf6 *

[ECO "A80"]

1. d4 f5 2. Nf3 g6 3. b3 Nf6 4. e3 Bg7 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 h6 *

[ECO "A30"]

1. c4 c5 2. g3 Nf6 3. Bg2 e6 4. Nf3 a6 *

[ECO "A60"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nf3 a6 *

[ECO "A09"]

1. Nf3 d5 2. c4 c6 3. e3 Nf6 4. Qc2 a6 *

[ECO "B08"]

1. d4 Nf6 2. Nf3 d6 3. Nc3 g6 4. e4 a6 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 a6 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nc3 Nf6 4. e3 b6 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Nf3 e6 4. Bg2 b6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c5 3. c3 b6 4. dxc5 bxc5 *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Bg5 Ne4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. Bxc6+ bxc6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Bg5 c5 4. d5 h6 *

[ECO "A00"]

1. g3 e5 2. c4 c6 3. d4 exd4 4. Qxd4 Nf6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. e3 c5 4. Nf3 cxd4 *

[ECO "A10"]

1. c4 f5 2. Nf3 Nf6 3. g3 e6 4. Bg2 c6 *

[ECO "B23"]

1. e4 c5 2. Nc3 g6 3. d4 cxd4 4. Qxd4 Nf6 *

[ECO "C00"]

1. e4 e6 2. Nf3 d5 3. e5 Ne7 4. d4 c5 *

[ECO "A80"]

1. d4 f5 2. Nf3 d6 3. g3 Nf6 4. c4 c6 *

[ECO "A09"]

1. Nf3 d5 2. c4 c6 3. e3 Nf6 4. b3 g6 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 g6 3. g3 c6 4. Bg2 d5 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 *

[ECO "E20"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 c5 *

[ECO "B10"]

1. e4 c6 2. Nf3 g6 3. d4 d6 4. c3 Nf6 *

[ECO "A41"]

1. d4 d6 2. e4 Nf6 3. f3 g6 4. Be3 c6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 d5 4. g3 g6 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. g3 c6 4. c4 dxc4 *

[ECO "D03"]

1. Nf3 Nf6 2. d4 d5 3. Bg5 Ne4 4. Bh4 c6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 Nf6 4. Bb2 c5 *

[ECO "B10"]

1. e4 c6 2. Nc3 d5 3. exd5 cxd5 4. Nf3 Nf6 *

[ECO "B29"]

1. e4 c5 2. Nf3 Nf6 3. Nc3 d5 4. exd5 Nxd5 *

[ECO "A12"]

1. Nf3 Nf6 2. b3 d5 3. c4 c6 4. Bb2 e6 *

[ECO "D31"]

1. d4 d5 2. c4 c6 3. Nc3 e6 4. Qb3 Nf6 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Bf4 e6 4. e3 Nf6 *

[ECO "A00"]

1. g3 d5 2. Bg2 c6 3. d3 Nf6 4. Nd2 e5 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 e5 4. d5 c6 *

[ECO "A21"]

1. c4 e5 2. Nc3 c6 3. g3 d6 4. Bg2 Nf6 *

[ECO "A23"]

1. c4 e5 2. Nc3 c6 3. g3 Nf6 4. d4 d6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 e5 4. Ng3 Nf6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 Nf6 4. g3 e5 *

[ECO "B22"]

1. e4 c5 2. c3 d6 3. Bc4 Nf6 4. d3 e6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Nc3 e6 4. Be2 Nf6 *

[ECO "C07"]

1. d4 e6 2. e4 d5 3. Nd2 c5 4. Ngf3 cxd4 *

[ECO "A17"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 c5 4. e3 d5 *

[ECO "D02"]

1. Nf3 Nf6 2. d4 d5 3. Bf4 e6 4. h3 c5 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nc3 c5 4. e3 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 4. O-O c5 *

[ECO "A07"]

1. g3 d5 2. Nf3 Nf6 3. Bg2 g6 4. c4 d4 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 Nxc3 4. bxc3 d6 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 h6 4. Bd3 Nf6 *

[ECO "D31"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. e3 f5 *

[ECO "A53"]

1. c4 Nf6 2. d4 d6 3. e4 e5 4. Nc3 exd4 *

[ECO "C43"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Nxe5 d6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d5 4. e3 e6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 d5 4. cxd5 Nxd5 *

[ECO "A86"]

1. d4 f5 2. c4 Nf6 3. g3 e6 4. Nf3 d5 *

[ECO "A52"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 g5 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d4 exd4 4. Nf3 Nxe4 *

[ECO "A82"]

1. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. g4 h6 *

[ECO "A13"]

1. c4 e6 2. d4 c5 3. Nf3 cxd4 4. Nxd4 a6 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. d4 Nf6 *

[ECO "A06"]

1. Nf3 d5 2. b3 c5 3. e3 a6 4. c4 e6 *

[ECO "B00"]

1. e4 a5 2. d4 e6 3. Nf3 d5 4. exd5 exd5 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. Nc3 a6 4. Nf3 b5 *

[ECO "B20"]

1. e4 c5 2. Ne2 a6 3. d4 e6 4. Nbc3 b5 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. g3 c5 4. b4 cxb4 *

[ECO "D11"]

1. d4 d5 2. c4 c6 3. Nf3 g6 4. e3 e6 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. Bg2 c6 4. Qc2 dxc4 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. d4 dxc4 4. Qa4+ c6 *

[ECO "C31"]

1. e4 e5 2. f4 d5 3. exd5 c6 4. Nc3 exf4 *

[ECO "B10"]

1. c4 c6 2. e4 e6 3. Nc3 d5 4. exd5 exd5 *

[ECO "A11"]

1. c4 c6 2. Nc3 d5 3. e3 e5 4. Nf3 d4 *

[ECO "D10"]

1. d4 d5 2. c4 dxc4 3. Nc3 c6 4. e4 e5 *

[ECO "D30"]

1. d4 e6 2. c4 d5 3. e3 dxc4 4. Bxc4 c5 *

[ECO "D32"]

1. c4 e6 2. Nc3 d5 3. d4 c5 4. cxd5 cxd4 *

[ECO "A40"]

1. d4 Nc6 2. Nf3 d6 3. c4 g6 4. d5 Nb8 *

[ECO "C10"]

1. d4 e6 2. e4 d5 3. Nc3 Nc6 4. e5 Nb8 *

[ECO "A21"]

1. c4 e5 2. Nc3 f5 3. d4 d6 4. dxe5 dxe5 *

[ECO "D02"]

1. Nf3 Nf6 2. d4 d5 3. c3 Bf5 4. Qb3 Qc8 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 *

[ECO "A30"]

1. c4 c5 2. g3 d5 3. cxd5 Qxd5 4. Nf3 Nc6 *

[ECO "B00"]

1. e4 Nc6 2. d4 d5 3. exd5 Qxd5 4. Be3 e5 *

[ECO "C45"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qf6 *

[ECO "C25"]

1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. d4 Qh4+ *

[ECO "A36"]

1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. b3 Bg7 *

[ECO "A04"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. d3 Bg7 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Nd2 Nc6 4. Ngf3 Be7 *

[ECO "C50"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 4. h3 Be7 *

[ECO "A03"]

1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 g6 4. Bb5 Bg7 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 Nc6 4. Bb5 Bb4 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bc5 3. e3 Nc6 4. Nf3 d6 *

[ECO "C46"]

1. e4 e5 2. Nc3 Nc6 3. Nf3 g6 4. Nd5 Bg7 *

[ECO "B00"]

1. e4 Nc6 2. Nc3 e6 3. d4 Bb4 4. a3 Bxc3+ *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Bc5 *

[ECO "B00"]

1. e4 Nc6 2. d4 e5 3. dxe5 Nxe5 4. Nc3 Bc5 *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 f5 4. g3 Bb4 *

[ECO "A13"]

1. c4 e6 2. d4 Nc6 3. Nc3 Nf6 4. e4 Bb4 *

[ECO "A22"]

1. c4 Nf6 2. Nc3 e5 3. e3 Nc6 4. d4 Bb4 *

[ECO "C64"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. c3 Nge7 *

[ECO "B32"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Bb5+ Nbd7 4. c4 a6 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 a6 *

[ECO "A11"]

1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. Nc3 Nbd7 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. e3 Nf6 4. Nc3 Nbd7 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 d6 3. c4 c6 4. g3 Nbd7 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 Nf6 4. d4 Nbd7 *

[ECO "E00"]

1. c4 Nf6 2. d4 e6 3. Qc2 c5 4. Nf3 Nc6 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. e3 c5 4. dxc5 Nc6 *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. Nc3 cxd4 4. Qxd4 Nc6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. b3 Nc6 4. Bb5 Nf6 *

[ECO "A90"]

1. d4 f5 2. c4 e6 3. g3 Nf6 4. Bg2 Bb4+ *

[ECO "B20"]

1. e4 c5 2. b3 Nc6 3. Bb2 d6 4. Bb5 Nf6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. b3 Nc6 4. Nc3 Nf6 *

[ECO "B00"]

1. e4 Nc6 2. Nc3 Nf6 3. Nf3 d5 4. exd5 Nxd5 *

[ECO "A41"]

1. d4 d6 2. e4 Nf6 3. f3 Nc6 4. d5 Ne5 *

[ECO "C11"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Nc6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 Nc6 3. Nc3 e6 4. e4 d5 *

[ECO "A00"]

1. Nc3 Nf6 2. Nf3 d5 3. d4 e6 4. e3 Nc6 *

[ECO "D00"]

1. d4 d5 2. a3 Nc6 3. Nc3 Nf6 4. Nf3 e6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Bb4 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 *

[ECO "C23"]

1. e4 e5 2. Bc4 Nc6 3. Nc3 d6 4. Nge2 Nf6 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 d6 4. Nc3 Nc6 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Bg2 d6 4. d3 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 Nc6 3. Bb2 d6 4. e3 e5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 d5 4. e3 Nbd7 *

[ECO "E10"]

1. c4 Nf6 2. d4 e6 3. Nf3 d5 4. Qc2 Nbd7 *

[ECO "E61"]

1. c4 Nf6 2. d4 g6 3. Nc3 d6 4. e4 Nbd7 *

[ECO "A80"]

1. d4 f5 2. Nc3 Nf6 3. Bg5 d5 4. Bxf6 exf6 *

[ECO "A45"]

1. d4 Nf6 2. c3 d6 3. Bg5 Nbd7 4. Nf3 h6 *

[ECO "D23"]

1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. Qa4+ Nbd7 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 g6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. Be2 Nf6 4. d3 g6 *

[ECO "C25"]

1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. Nf3 Nf6 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. c4 f5 4. g3 Nf6 *

[ECO "C45"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nge7 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. f3 Nc6 4. d5 Ne5 *

[ECO "B30"]

1. Nf3 c5 2. e4 Nc6 3. Nc3 a6 4. d4 cxd4 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Bc4 a6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. c3 d5 4. exd5 Qxd5 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Na5 4. Nf3 a6 *

[ECO "B10"]

1. e4 c6 2. c4 d6 3. d4 e5 4. Nc3 Nd7 *

[ECO "B10"]

1. e4 c6 2. Nc3 d5 3. Qf3 dxe4 4. Nxe4 Nd7 *

[ECO "C00"]

1. c4 e6 2. e4 c5 3. g3 Nc6 4. Bg2 g6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 e5 4. g3 g6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 h6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 f5 *

[ECO "B21"]

1. e4 c5 2. d4 cxd4 3. c3 d3 4. Bxd3 Nc6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. Nc3 d6 4. g3 g6 *

[ECO "B20"]

1. e4 c5 2. g3 g6 3. Nc3 Nc6 4. Nf3 d6 *

[ECO "A40"]

1. d4 g6 2. Nf3 Bg7 3. c3 d6 4. Bg5 Nf6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. g3 c5 4. e3 Nc6 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. Ne5 Nc6 *

[ECO "C07"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Bb5+ Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 Nc6 4. d4 e5 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nc6 3. c4 d4 4. d3 g6 *

[ECO "A07"]

1. g3 d5 2. Nf3 g6 3. c4 dxc4 4. Qa4+ Nc6 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. c4 e5 4. Ne2 Nc6 *

[ECO "A40"]

1. d4 e6 2. c4 Nc6 3. Nc3 d5 4. Nf3 dxc4 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. Nf3 dxc4 4. Qa4+ Nc6 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. e3 Nf6 4. Nf3 a6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. c4 Nc6 4. cxd5 exd5 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 f5 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. c3 d3 *

[ECO "C45"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nxd4 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 f5 4. d4 fxe4 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Nc3 g6 4. Rb1 f5 *

[ECO "B00"]

1. e4 b6 2. d4 Bb7 3. Bd3 Nf6 4. Qe2 Nc6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 Bf5 4. Bb2 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Bg4 4. d3 Nbd7 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. g3 e6 4. Bg2 c6 *

[ECO "B30"]

1. Nf3 c5 2. e4 Nc6 3. Nc3 d6 4. Bb5 Bd7 *

[ECO "A06"]

1. Nf3 d5 2. e3 c6 3. b3 Bg4 4. Bb2 Nd7 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 d5 4. Qa4 Bd7 *

[ECO "A07"]

1. g3 d5 2. Nf3 Bg4 3. Bg2 Nd7 4. d4 e6 *

[ECO "A06"]

1. b3 d5 2. Nf3 Bg4 3. e3 Nd7 4. Bb2 e6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. e4 Bb7 4. Bd3 Bb4+ *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. Bf4 e6 4. e3 Bd6 *

[ECO "B23"]

1. e4 c5 2. Nc3 b6 3. g3 Bb7 4. Bg2 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O c5 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 b6 4. O-O Bb7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 b6 4. Nbd2 Bb7 *

[ECO "B00"]

1. e4 b6 2. d4 Bb7 3. Nc3 e6 4. a3 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. g3 e6 3. Nf3 b5 4. Bg5 Bb7 *

[ECO "A45"]

1. d4 Nf6 2. g3 e6 3. Nf3 b5 4. Nbd2 Bb7 *

[ECO "A49"]

1. Nf3 Nf6 2. g3 g6 3. d4 b6 4. Bg2 Bb7 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O g6 *

[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. a4 Nf6 *

[ECO "D04"]

1. d4 Nf6 2. Nf3 d5 3. e3 Bf5 4. Be2 c6 *

[ECO "D10"]

1. c4 c6 2. d4 d5 3. e3 Nf6 4. Bd3 Bg4 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. b3 c6 4. Bb2 Bg4 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 d6 3. d4 Bf5 4. g3 c6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 d6 3. Nc3 Bf5 4. d4 h6 *

[ECO "D04"]

1. d4 Nf6 2. Nf3 d5 3. e3 Bg4 4. h3 Bh5 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. Bf4 Bf5 4. Nh4 Bg4 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 Bg4 4. e3 e6 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. f4 b5 4. Nf3 Bb7 *

[ECO "C02"]

1. d4 e6 2. e4 d5 3. e5 Bd7 4. Bd3 a6 *

[ECO "A10"]

1. c4 b6 2. Nc3 e6 3. e4 Bb7 4. a3 c5 *

[ECO "B22"]

1. e4 c5 2. c3 b6 3. d4 Bb7 4. f3 e6 *

[ECO "D25"]

1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Nf3 Bg4 *

[ECO "A04"]

1. Nf3 b6 2. g3 c5 3. Bg2 Bb7 4. d3 g6 *

[ECO "A40"]

1. d4 e6 2. Nf3 b6 3. e4 Bb7 4. Bd3 g6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. a3 Bb7 4. d5 f5 *

[ECO "A13"]

1. c4 e6 2. Nc3 b6 3. g3 Bb7 4. Nf3 f5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Nf3 Bb7 4. e3 f5 *

[ECO "B21"]

1. e4 c5 2. f4 e6 3. Nc3 d5 4. Bb5+ Bd7 *

[ECO "D10"]

1. c4 c6 2. d4 d5 3. Nc3 dxc4 4. e3 Be6 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. Nc3 dxe4 4. Nxe4 Bg4 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. b3 Bg4 4. Bg2 e6 *

[ECO "E20"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Ne2 e6 *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. Nf3 d6 4. d4 Bg4 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 e5 4. Nd5 Bg4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Be3 Qb6 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. f4 Qb6 *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. a4 Qa5+ *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. d5 Qb6 4. Nc3 d6 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. Bf4 c5 4. e3 Qb6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. e3 c6 4. Bd3 Qb6 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. exd5 Qxd5 4. Be2 Nf6 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Bg7 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Qc2 g6 *

[ECO "C40"]

1. e4 e5 2. Nf3 f5 3. Nxe5 Nf6 4. Bc4 Qe7 *

[ECO "B12"]

1. e4 c6 2. d4 d6 3. Be2 Nf6 4. Nc3 Qc7 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. Be2 Qc7 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 d5 4. exd5 Qh4+ *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. d4 e5 4. Nf3 exd4 *

[ECO "A17"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 Bb4 4. g4 O-O *

[ECO "E00"]

1. d4 Nf6 2. g3 e6 3. c4 Be7 4. Bg2 O-O *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. d5 Bg7 4. Nc3 O-O *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. Qc2 Bg7 4. Nc3 O-O *

[ECO "A45"]

1. d4 Nf6 2. g3 g6 3. Bg2 Bg7 4. e4 O-O *

[ECO "B12"]

1. e4 c6 2. d4 g6 3. c4 Bg7 4. Nc3 a6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. a3 g6 4. e4 Bg7 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Nc3 Bb4 4. Qb3 c5 *

[ECO "A30"]

1. c4 c5 2. Nf3 g6 3. Nc3 Bg7 4. g3 b6 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. Bc4 b5 *

[ECO "A21"]

1. c4 e5 2. Nc3 c6 3. g3 g6 4. Bg2 Bg7 *

[ECO "A00"]

1. g3 c5 2. Bg2 g6 3. c3 Bg7 4. d4 cxd4 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nc3 c5 4. Be3 cxd4 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 c6 4. Ngf3 Be7 *

[ECO "A44"]

1. d4 c5 2. d5 e5 3. e4 d6 4. Nc3 Be7 *

[ECO "C39"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. e3 g6 4. c4 Bg7 *

[ECO "B10"]

1. e4 c6 2. Nf3 g6 3. d4 Bg7 4. h3 d5 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. f4 d5 4. Nf3 c6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. f3 e5 4. dxe5 Bc5 *

[ECO "C07"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. dxc5 Bxc5 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 Be7 4. Bd3 dxe4 *

[ECO "A06"]

1. Nf3 d5 2. e3 g6 3. c4 dxc4 4. Bxc4 Bg7 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. c4 d6 4. Nf3 e5 *

[ECO "C25"]

1. e4 e5 2. Nc3 d6 3. g3 g6 4. Bg2 Bg7 *

[ECO "A13"]

1. c4 e6 2. g3 g6 3. Bg2 Bg7 4. d4 d5 *

[ECO "C04"]

1. d4 Nc6 2. Nf3 e6 3. e4 d5 4. Nbd2 Nf6 *

[ECO "A00"]

1. g3 g6 2. Bg2 d5 3. Nf3 Bg7 4. O-O e6 *

[ECO "C01"]

1. d4 e6 2. e4 d5 3. exd5 exd5 4. Bf4 Bd6 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. e3 Bg7 4. Nd2 h6 *

[ECO "A40"]

1. c4 b6 2. d4 e6 3. Nc3 Bb4 4. Bd2 Nf6 *

[ECO "E14"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Bb4+ *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bf4 b6 4. e3 Be7 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. e3 c5 4. c3 Be7 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. b4 Bg7 4. Bb2 c6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 c6 3. Bg2 g6 4. b3 Bg7 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. d4 c5 4. c3 Nf6 *

[ECO "A54"]

1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. d5 Be7 *

[ECO "C00"]

1. e4 e6 2. Nf3 d6 3. d4 Be7 4. c4 Nf6 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 Be7 4. Nd2 Nh6 *

[ECO "D31"]

1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Bf4 Nf6 *

[ECO "C15"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Qd3 Ne7 *

[ECO "A45"]

1. d4 Nf6 2. Nc3 d5 3. Nf3 g6 4. e3 Bh6 *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. Bf4 Bg7 4. Nbd2 d6 *

[ECO "B06"]

1. e4 d6 2. d4 g6 3. Nc3 Bg7 4. Nge2 Nf6 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nf3 d6 4. Bc4 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d5 3. d4 g6 4. Bg5 Bg7 *

[ECO "A04"]

1. Nf3 g6 2. d4 Bg7 3. c4 Nf6 4. b4 d5 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. b3 Bg7 4. Bb2 d5 *

[ECO "A03"]

1. f4 d5 2. d3 g6 3. Nf3 Nf6 4. e3 Bg7 *

[ECO "C26"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 Bc5 4. f4 d6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. Bf4 e6 4. c4 Bb4+ *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. Qe2 Bc5 4. f4 d5 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 e6 3. g3 g6 4. Bg2 Bg7 *

[ECO "A22"]

1. c4 e5 2. Nc3 Bb4 3. g3 Nf6 4. Nd5 Nxd5 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 Nc6 4. Nf3 Nf6 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nf3 Nf6 4. Bf4 Bb4+ *

[ECO "A04"]

1. Nf3 f5 2. c4 Nf6 3. g3 g6 4. b4 Bg7 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. e3 Nf6 4. Bd3 a6 *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. Bf4 a6 4. e3 Nf6 *

[ECO "A05"]

1. g3 Nf6 2. Nf3 b5 3. Na3 a6 4. c4 e6 *

[ECO "A06"]

1. Nf3 d5 2. b3 e6 3. Bb2 Nf6 4. c4 b6 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. b3 Nf6 4. g3 b6 *

[ECO "E12"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. a3 d5 *

[ECO "C05"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. Bd3 b6 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. c4 e6 4. h3 b6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. c3 e6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. a3 f5 4. Nf3 Nf6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. g3 e6 4. Bg2 c6 *

[ECO "A43"]

1. Nf3 Nf6 2. d4 c5 3. d5 b5 4. a4 b4 *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. d4 Nf6 4. Nf3 Nxe4 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 e6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bf4 c5 4. e3 cxd4 *

[ECO "A43"]

1. d4 c5 2. d5 f5 3. e4 fxe4 4. Nc3 Nf6 *

[ECO "B21"]

1. e4 c5 2. f4 g6 3. d4 cxd4 4. Qxd4 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. Bxf6 gxf6 4. d5 f5 *

[ECO "A86"]

1. d4 f5 2. g3 Nf6 3. c4 d6 4. Bg2 c6 *

[ECO "E01"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 *

[ECO "E60"]

1. d4 Nf6 2. g3 g6 3. c4 c6 4. Nc3 d5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. b3 d6 4. d4 c5 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. c3 Nf6 4. h3 g6 *

[ECO "A45"]

1. d4 Nf6 2. g3 g6 3. Bg2 c5 4. d5 d6 *

[ECO "D00"]

1. Nc3 d5 2. d4 c6 3. Bg5 h6 4. Bf4 Nf6 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. Bc4 c6 *

[ECO "D01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 c6 4. Nf3 Ne4 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c6 3. Nc3 d6 4. g3 c5 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Bc4 Nf6 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 c5 4. c3 cxd4 *

[ECO "C67"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 *

[ECO "D02"]

1. Nf3 d5 2. d4 c5 3. c4 dxc4 4. d5 Nf6 *

[ECO "B13"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c3 Nf6 *

[ECO "D02"]

1. d4 Nf6 2. Bf4 d5 3. Nf3 c5 4. Nc3 cxd4 *

[ECO "D02"]

1. d4 d5 2. Nf3 c5 3. e3 Nf6 4. b3 cxd4 *

[ECO "A45"]

1. d4 Nf6 2. e4 Nxe4 3. Nf3 d5 4. Bd3 c5 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. e3 e6 4. Bd3 Nf6 *

[ECO "B10"]

1. e4 c6 2. d3 d5 3. Nd2 e5 4. g3 Nf6 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 d6 4. Bc4 c6 *

[ECO "A05"]

1. g3 Nf6 2. Nf3 b5 3. Bg2 Bb7 4. O-O e6 *

[ECO "A20"]

1. c4 e5 2. g3 c6 3. Bg2 Nf6 4. d4 d6 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nge2 c6 *

[ECO "B20"]

1. e4 c5 2. Ne2 d6 3. g3 Nf6 4. Bg2 e5 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. c3 Nf6 4. h3 e6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 d6 *

[ECO "A43"]

1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. Nc3 e6 *

[ECO "E00"]

1. c4 Nf6 2. d4 e6 3. g3 c5 4. Nf3 d5 *

[ECO "A04"]

1. Nf3 c5 2. Nc3 d5 3. e3 Nf6 4. b3 e6 *

[ECO "C00"]

1. d4 e6 2. e4 d6 3. Nf3 g6 4. Nc3 Ne7 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bf4 Nf6 4. Nc3 d5 *

[ECO "D03"]

1. d4 d5 2. Nf3 Nf6 3. Bg5 Ne4 4. Bf4 f6 *

[ECO "A85"]

1. d4 f5 2. c4 Nf6 3. Nc3 g6 4. h4 d6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. Nf3 g6 *

[ECO "A04"]

1. Nf3 d6 2. c4 Nf6 3. Nc3 e5 4. g3 g6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. Nf3 Nf6 4. d3 g6 *

[ECO "E00"]

1. d4 e6 2. c4 Nf6 3. Nc3 g6 4. e4 d6 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Qxd4 Nf6 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nd3 Nxe4 *

[ECO "C00"]

1. e4 e6 2. Nf3 d5 3. Nc3 Nf6 4. e5 Ne4 *

[ECO "D35"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bf4 dxc4 *

[ECO "C31"]

1. e4 e5 2. f4 d5 3. exd5 e4 4. d3 Nf6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. c4 e6 4. Nc3 exd5 *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bf4 Nf6 *

[ECO "D30"]

1. d4 e6 2. c4 d5 3. cxd5 exd5 4. e3 Nf6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 d5 3. Nc3 e6 4. cxd5 exd5 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. cxd5 exd5 4. Bg2 Nf6 *

[ECO "A15"]

1. c3 Nf6 2. c4 e5 3. d3 d5 4. cxd5 Nxd5 *

[ECO "A81"]

1. d4 f5 2. g3 d6 3. Bg2 Nf6 4. d5 e5 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c4 Bg7 4. d4 Nc6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. g3 f5 4. d4 Nf6 *

[ECO "A80"]

1. d4 f5 2. Nf3 e6 3. e3 Nf6 4. c4 d5 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 e6 4. Nh3 d5 *

[ECO "A80"]

1. d4 f5 2. Nf3 e6 3. d5 Nf6 4. dxe6 dxe6 *

[ECO "C11"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. f4 Nfd7 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. Bg2 Nf6 4. Nc3 g6 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bf4 Nf6 4. e4 fxe4 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bh4 g5 4. e4 Nf6 *

[ECO "A00"]

1. Nc3 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Qxd4 a6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nc6 4. d4 cxd4 *

[ECO "D02"]

1. d4 d5 2. Nf3 c5 3. c4 dxc4 4. d5 b5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 b6 4. Nf3 e6 *

[ECO "B21"]

1. e4 c5 2. d4 cxd4 3. c3 e5 4. cxd4 exd4 *

[ECO "A81"]

1. d4 f5 2. g3 e6 3. c4 c5 4. Nf3 cxd4 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bh4 c5 4. Nc3 cxd4 *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. Bg5 c6 4. e3 g6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. f4 g6 4. d4 cxd4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. g4 Bc8 *

[ECO "B13"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 dxc4 *

[ECO "A07"]

1. g3 d5 2. Nf3 g6 3. c4 c6 4. Qa4 e6 *

[ECO "A04"]

1. Nf3 d6 2. d4 Nf6 3. Nc3 c6 4. e4 Bg4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 g6 4. c4 e6 *

[ECO "D31"]

1. c4 e6 2. Nc3 d5 3. d4 c6 4. Bf4 dxc4 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 c6 4. Ngf3 dxe4 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d4 d6 4. dxc5 dxc5 *

[ECO "A04"]

1. Nf3 c5 2. d4 cxd4 3. Nxd4 d5 4. g3 e5 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. c4 c6 4. Qc2 f5 *

[ECO "B06"]

1. e4 g6 2. h4 d5 3. h5 dxe4 4. hxg6 fxg6 *

[ECO "A40"]

1. d4 Nc6 2. c4 e5 3. d5 Nb8 4. Nf3 d6 *

[ECO "A35"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. g3 g6 *

[ECO "C34"]

1. e4 e5 2. f4 exf4 3. Nf3 h6 4. d4 g5 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 g6 4. Qb3 Qc8 *

[ECO "B22"]

1. e4 c5 2. c3 Qa5 3. Nf3 Nc6 4. Na3 Nf6 *

[ECO "B30"]

1. Nf3 c5 2. e4 Nc6 3. Bb5 Qc7 4. O-O a6 *

[ECO "C40"]

1. e4 e5 2. Nf3 Qf6 3. Nc3 Nc6 4. Bc4 d6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 d5 4. Qa4 Qd6 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nd7 *

[ECO "B30"]

1. Nf3 c5 2. e4 Nc6 3. Bb5 Qc7 4. O-O e6 *

[ECO "C00"]

1. e4 e6 2. d3 c5 3. Nf3 Nc6 4. g3 Bd6 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. Nc3 Nc6 4. d3 Bg7 *

[ECO "B21"]

1. e4 c5 2. f4 g6 3. Nf3 Bg7 4. c3 Nc6 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. d4 c5 4. dxc5 Na6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 d6 4. d4 Be7 *

[ECO "B07"]

1. Nf3 g6 2. e4 Bg7 3. d4 d6 4. c3 Nc6 *

[ECO "A40"]

1. d4 e6 2. Nf3 Nc6 3. Nc3 Bb4 4. Qd3 d5 *

[ECO "C10"]

1. d4 e6 2. e4 d5 3. Nc3 Nc6 4. Nf3 Bb4 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Nd2 d5 4. Qa4+ Nc6 *

[ECO "A40"]

1. d4 g6 2. Nf3 Bg7 3. Bf4 d6 4. e3 Nd7 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. Qb3 Ba5 4. Nf3 Nc6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Bc5 4. Nf3 Nc6 *

[ECO "C23"]

1. e4 e5 2. Bc4 Bc5 3. d4 Bxd4 4. Nf3 Nc6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c4 Bc5 4. d3 f5 *

[ECO "E20"]

1. c4 Nf6 2. d4 e6 3. Nc3 Bb4 4. f3 Nc6 *

[ECO "E11"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Nc6 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. e4 Bc5 4. d3 Nf6 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. h3 Bc5 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. d3 Bc5 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. d3 Nf6 4. g3 Bc5 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. g3 Bb4 4. Qb3 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Nc6 4. d4 Bf5 *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Bb4 4. Qc2 Nf6 *

[ECO "C65"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bd6 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Be7 4. Nc3 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. b4 Bg7 4. Bb2 Na6 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O a6 *

[ECO "D01"]

1. d4 Nf6 2. Bg5 d5 3. Nc3 c6 4. Qd3 Nbd7 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 d6 3. d4 Nbd7 4. e3 c6 *

[ECO "B07"]

1. d4 d6 2. e4 Nf6 3. Nc3 c6 4. Be2 Nbd7 *

[ECO "B51"]

1. Nf3 c5 2. e4 d6 3. Bb5+ Nd7 4. a4 Nf6 *

[ECO "B30"]

1. Nf3 c5 2. e4 Nc6 3. b3 e6 4. Bb5 Nf6 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 a6 *

[ECO "C07"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bf4 c5 3. dxc5 Nc6 4. Nf3 e6 *

[ECO "A30"]

1. c4 c5 2. g3 Nf6 3. Bg2 Nc6 4. d3 e6 *

[ECO "B40"]

1. Nf3 e6 2. e4 c5 3. g3 Nc6 4. Nc3 Nf6 *

[ECO "C00"]

1. e4 e6 2. d3 c5 3. g3 Nc6 4. Bg2 Nf6 *

[ECO "A34"]

1. c4 c5 2. Nc3 e5 3. Nf3 Nc6 4. a3 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 c5 3. Bg2 Nc6 4. O-O e5 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. c3 e6 4. d3 Nge7 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 e5 4. O-O Nge7 *

[ECO "B20"]

1. e4 c5 2. c4 Nc6 3. Nc3 g6 4. d3 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. h4 c5 4. dxc5 Na6 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. cxd5 exd5 *

[ECO "A35"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. e3 d5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 c5 4. c3 Nc6 *

[ECO "A07"]

1. Nf3 c5 2. g3 d5 3. d3 Nc6 4. Bg2 Nf6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 d6 4. O-O Nf6 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 c5 4. c3 Nc6 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. c3 Nf6 4. Qc2 Nc6 *

[ECO "B20"]

1. e4 c5 2. Ne2 d6 3. g3 Nf6 4. Bg2 Nc6 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. d3 Nge7 4. Nf3 d5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. f3 dxe4 4. fxe4 e5 *

[ECO "A02"]

1. f4 Nf6 2. Nf3 d5 3. e3 Nc6 4. Nc3 g6 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. c4 Nf6 4. Nc3 Na6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 d4 4. Bb2 Nc6 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Bb5 Nf6 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. Bf4 d5 4. e3 Nc6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. c3 Nc6 4. e3 e6 *

[ECO "A45"]

1. d4 Nf6 2. g3 d5 3. Bg2 Nc6 4. Nf3 e6 *

[ECO "C11"]

1. d4 e6 2. e4 d5 3. Nc3 Nf6 4. Bd3 Nc6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. e3 d5 4. Qa4+ Nc6 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Nf3 Nc6 4. Bg2 d6 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 Nc6 4. Nc3 e5 *

[ECO "B00"]

1. e4 Nc6 2. Nf3 d6 3. d4 Nf6 4. Nbd2 e5 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. g3 Nf6 4. Bg2 Nc6 *

[ECO "A40"]

1. d4 e6 2. c4 Nc6 3. e3 Nf6 4. Nf3 d6 *

[ECO "C00"]

1. e4 e6 2. Nf3 Nc6 3. Nc3 d6 4. d4 Nf6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. g3 d6 4. Bg2 Nbd7 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nf3 Nbd7 4. g3 e5 *

[ECO "A45"]

1. d4 Nf6 2. c3 d6 3. Nf3 Nbd7 4. Nbd2 e5 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. g3 e5 *

[ECO "B04"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Nb6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 e6 3. c4 d5 4. Bb2 Nbd7 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Nc3 Nbd7 4. Bf4 e6 *

[ECO "D00"]

1. d4 d5 2. Bf4 e6 3. Nf3 Nf6 4. e3 Nbd7 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. Nbd2 d5 4. e3 Nbd7 *

[ECO "A06"]

1. Nf3 d5 2. b3 Nf6 3. Bb2 Nbd7 4. e3 e6 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Ne7 4. Bd3 Nd7 *

[ECO "B07"]

1. d4 d6 2. e4 Nf6 3. Nc3 g6 4. g3 Nbd7 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. Nd2 Nbd7 4. Ngf3 g6 *

[ECO "D01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 Nbd7 4. Qd3 h6 *

[ECO "D03"]

1. d4 Nf6 2. Bg5 d5 3. Nf3 Nbd7 4. Nc3 Ne4 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. g3 b5 *

[ECO "C26"]

1. e4 e5 2. g3 Nf6 3. Nc3 Nc6 4. Nf3 g6 *

[ECO "C50"]

1. e4 e5 2. Bc4 Nc6 3. Nf3 h6 4. O-O Nf6 *

[ECO "A00"]

1. g3 Nf6 2. Bg2 e5 3. Nf3 Nc6 4. d4 exd4 *

[ECO "A13"]

1. c4 e6 2. Nc3 f5 3. g3 Nf6 4. Bg2 Nc6 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. c4 e6 4. h3 Nc6 *

[ECO "A84"]

1. c4 e6 2. d4 f5 3. Nf3 Nf6 4. Qc2 Nc6 *

[ECO "A90"]

1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Nc6 *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 f5 4. e3 Nf6 *

[ECO "A10"]

1. c4 f5 2. Nc3 Nf6 3. d3 e5 4. Nf3 Nc6 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. Nc3 g6 *

[ECO "B54"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 e6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nf3 a6 4. d4 Nd7 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. c3 d6 4. d4 Nd7 *

[ECO "B20"]

1. e4 c5 2. Bc4 Nc6 3. Nc3 e6 4. Nf3 a6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 e6 4. Be2 a6 *

[ECO "B20"]

1. e4 c5 2. Bc4 a6 3. a4 Nc6 4. Nc3 e6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 d6 4. e5 a6 *

[ECO "A07"]

1. Nf3 d5 2. g3 b6 3. c4 dxc4 4. Qa4+ Nd7 *

[ECO "B21"]

1. e4 c5 2. f4 b6 3. c4 Nc6 4. Nf3 g6 *

[ECO "B20"]

1. e4 c5 2. b4 b6 3. bxc5 bxc5 4. Nc3 Nc6 *

[ECO "B10"]

1. e4 c6 2. Nf3 d6 3. d4 Nd7 4. Bd3 e5 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 *

[ECO "B30"]

1. Nf3 c5 2. e4 Nc6 3. Nc3 e5 4. Bc4 g6 *

[ECO "A30"]

1. c4 c5 2. Nf3 e6 3. e4 Nc6 4. d4 cxd4 *

[ECO "A00"]

1. g3 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 *

[ECO "B20"]

1. e4 c5 2. d3 Nc6 3. f4 d5 4. Be2 g6 *

[ECO "A08"]

1. Nf3 d5 2. g3 c5 3. Bg2 g6 4. O-O Nc6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. Nc3 g6 4. e3 d6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 c5 4. Nf3 Nc6 *

[ECO "A08"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 cxd4 *

[ECO "A43"]

1. d4 c5 2. Nc3 d5 3. Bf4 Nc6 4. e4 cxd4 *

[ECO "B10"]

1. c4 c6 2. e4 d5 3. cxd5 cxd5 4. e5 Nc6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 e6 4. d4 cxd4 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. c3 d5 *

[ECO "A30"]

1. c4 c5 2. g3 e6 3. Bg2 Nc6 4. Nf3 d5 *

[ECO "D00"]

1. d4 d5 2. Bf4 e6 3. e3 c5 4. Nf3 Nc6 *

[ECO "A40"]

1. d4 e6 2. g3 c5 3. Bg2 d5 4. c3 Nc6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. c3 Nc6 4. d3 d5 *

[ECO "C00"]

1. e4 e6 2. f4 d5 3. e5 c5 4. c3 Nc6 *

[ECO "A30"]

1. c4 c5 2. Nf3 d6 3. g3 e5 4. Nc3 Nc6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 d6 4. Be2 e5 *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. Nf3 Nc6 4. g3 d6 *

[ECO "A21"]

1. c4 e5 2. g3 d6 3. Nc3 Nc6 4. Bg2 Be6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. Bb5 d6 *

[ECO "D00"]

1. d4 d5 2. Bg5 f6 3. Bf4 Nc6 4. Nf3 g5 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. e3 Nc6 4. Nxd4 Nxd4 *

[ECO "C50"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 4. c3 g6 *

[ECO "A01"]

1. b3 e5 2. c4 Nc6 3. Bb2 d6 4. e3 g6 *

[ECO "C00"]

1. e4 e6 2. d4 d5 3. Be3 dxe4 4. f3 Nc6 *

[ECO "A00"]

1. g3 e5 2. e3 d5 3. d4 Nc6 4. Bb5 exd4 *

[ECO "A00"]

1. h3 d5 2. e3 Nc6 3. Nf3 e5 4. d4 exd4 *

[ECO "C00"]

1. d4 e6 2. e4 d5 3. Bd3 Nc6 4. c3 e5 *

[ECO "C45"]

1. e4 Nc6 2. d4 e5 3. Nf3 exd4 4. Nxd4 Bc5 *

[ECO "A10"]

1. c4 b6 2. Nc3 Bb7 3. e4 e6 4. Nf3 Bb4 *

[ECO "C00"]

1. e4 e6 2. Qe2 e5 3. Nf3 Nc6 4. c3 d6 *

[ECO "A40"]

1. d4 Nc6 2. d5 Ne5 3. e4 e6 4. dxe6 dxe6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 d5 4. Qa4 f6 *

[ECO "A21"]

1. c4 e5 2. Nc3 g6 3. d4 d6 4. Nf3 Nd7 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. e4 g6 4. d4 Nd7 *

[ECO "A40"]

1. d4 Nc6 2. c4 e5 3. d5 Nce7 4. e4 Ng6 *

[ECO "A20"]

1. c4 e5 2. Nf3 e4 3. Nd4 Nc6 4. e3 Nxd4 *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 f5 4. g3 e4 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 g6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 Bf5 4. O-O e6 *

[ECO "A00"]

1. Nc3 d5 2. Nf3 Nc6 3. d4 Nf6 4. g3 Bg4 *

[ECO "A07"]

1. g3 d5 2. Nf3 Bg4 3. b3 Nc6 4. Bb2 Nf6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. Nbd2 Bg4 4. e4 Nc6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. e3 Nd7 4. c4 Ngf6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 Bf5 4. Bb5+ Nbd7 *

[ECO "B20"]

1. e4 c5 2. b3 b6 3. Bb2 Bb7 4. Nc3 Nc6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. e3 Be6 4. Nc3 Nc6 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e3 Be6 4. Ne2 Nc6 *

[ECO "D07"]

1. c4 Nc6 2. d4 d5 3. e3 e5 4. Nf3 Bg4 *

[ECO "C62"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. O-O Bd7 *

[ECO "D11"]

1. d4 d5 2. c4 c6 3. Nf3 dxc4 4. e3 Be6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. Bb2 Nd7 4. d4 e6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 Bxf3 4. gxf3 Nd7 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 Nd7 4. h3 Bh5 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. Ne5 Bh5 4. d4 Nd7 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. Ne5 Bf5 4. c4 Nd7 *

[ECO "B00"]

1. e4 b6 2. d4 e6 3. c4 Bb7 4. f3 Bb4+ *

[ECO "A46"]

1. d4 Nf6 2. Nf3 a6 3. g3 b5 4. a4 Bb7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. g3 b5 4. Qd3 Ba6 *

[ECO "A04"]

1. Nf3 c5 2. b3 b6 3. c4 Nf6 4. e3 Bb7 *

[ECO "A40"]

1. d4 b5 2. e4 Bb7 3. Bd3 Nf6 4. Nd2 c5 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. c3 Bg7 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. b4 Bb7 4. Bb2 e6 *

[ECO "A17"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 b6 4. e3 Bb7 *

[ECO "E12"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. h3 Bb7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bf4 b6 4. Nbd2 Bb7 *

[ECO "A04"]

1. Nf3 b6 2. b3 Bb7 3. e3 Nf6 4. Bb2 e6 *

[ECO "A10"]

1. c4 b6 2. d4 Bb7 3. Bg5 Nf6 4. Bxf6 exf6 *

[ECO "A49"]

1. d4 Nf6 2. Nf3 g6 3. g3 b6 4. Nc3 Bb7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 b5 3. Bg5 Bb7 4. Nbd2 h6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. Bb5+ Bd7 *

[ECO "D01"]

1. d4 Nf6 2. Bg5 d5 3. Nc3 c6 4. e3 Bf5 *

[ECO "A15"]

1. c4 Nf6 2. g3 c6 3. b3 d5 4. Bb2 Bg4 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c6 3. Nc3 d5 4. e3 Bg4 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. e3 Nf6 4. Qc2 Bg4 *

[ECO "D04"]

1. Nf3 d5 2. d4 Nf6 3. e3 c6 4. b3 Bg4 *

[ECO "B10"]

1. e4 c6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 Bg4 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. g3 g6 4. Nf3 Bg4 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. Nbd2 Nf6 4. h3 Bh5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. c4 Bg4 4. Nc3 Bxf3 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 d6 3. c4 Bg4 4. g3 Bxf3 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. Bc4 Be6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. d4 Bg4 4. Bg2 Bxf3 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Bf5 4. Nh4 Be4 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. Bf4 Bg4 4. Ne5 Bh5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. g3 Bg4 4. Ne5 Bf5 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 Bg4 4. Ne5 Bf5 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 Bf5 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Be2 Nxd5 4. d4 Bf5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bf5 3. Bf4 Nf6 4. c3 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Bf5 4. b3 e6 *

[ECO "D04"]

1. d4 Nf6 2. Nf3 d5 3. e3 Bg4 4. Be2 e6 *

[ECO "B53"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 a6 *

[ECO "D04"]

1. Nf3 Nf6 2. d4 d5 3. e3 Bg4 4. Nbd2 e6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 Bg4 4. Bb2 e6 *

[ECO "A45"]

1. d4 Nf6 2. g3 d5 3. Nf3 e6 4. Bg2 Bd7 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 a6 4. Nf3 Bg4 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bf5 3. c4 e6 4. Qb3 b6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Nf3 Bb7 4. g3 Bxf3 *

[ECO "A04"]

1. Nf3 b5 2. e4 Bb7 3. Bxb5 Bxe4 4. d4 e6 *

[ECO "B00"]

1. e4 b6 2. d4 Bb7 3. Nd2 e6 4. Ngf3 c5 *

[ECO "A34"]

1. c4 c5 2. Nc3 b6 3. g3 Bb7 4. e4 g6 *

[ECO "A04"]

1. Nf3 c5 2. g3 b6 3. Bg2 Bb7 4. O-O g6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. Nc3 g6 4. e3 Bg7 *

[ECO "A30"]

1. c4 c5 2. Nf3 b6 3. d4 cxd4 4. Nxd4 Bb7 *

[ECO "A40"]

1. d4 e6 2. Nf3 b6 3. e4 Bb7 4. Nc3 g6 *

[ECO "A40"]

1. d4 e6 2. Nf3 b6 3. g3 Bb7 4. c4 f5 *

[ECO "C07"]

1. d4 e6 2. e4 d5 3. Nd2 c5 4. Bb5+ Bd7 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bg4 4. h3 Bh5 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. e3 Bf5 4. Bd3 Bxd3 *

[ECO "D00"]

1. d4 d5 2. e3 Bf5 3. Nf3 c6 4. Bd3 Bxd3 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. d3 Bg4 4. Bg2 Bxf3 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bg4 4. Ne5 Bf5 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. Nc3 dxe4 4. Nxe4 Bf5 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. c3 Qc7 *

[ECO "A00"]

1. g3 d5 2. Bg2 c6 3. Nf3 Bg4 4. c4 dxc4 *

[ECO "B10"]

1. e4 c6 2. Nc3 d5 3. Nf3 d4 4. Nb1 Bg4 *

[ECO "B13"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Nf3 Bg4 *

[ECO "B11"]

1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. exd5 cxd5 *

[ECO "A11"]

1. c4 c6 2. Nf3 d5 3. g3 Bg4 4. cxd5 cxd5 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. b3 Bf5 4. Bb2 e6 *

[ECO "A06"]

1. Nf3 d5 2. e3 c6 3. Be2 Bf5 4. O-O e6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 Bxf3 4. exf3 g6 *

[ECO "B00"]

1. e4 Nc6 2. d4 d6 3. Nf3 Bg4 4. d5 Nb8 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. Nf3 Bg4 4. d4 exd4 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. Nc3 c6 4. Bc4 Bg7 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 Bxf3 4. exf3 e6 *

[ECO "A07"]

1. g3 d5 2. Nf3 Bg4 3. Bg2 e6 4. Ne5 Bf5 *

[ECO "B12"]

1. d4 c6 2. e4 g6 3. Nc3 Bg7 4. Be3 Qb6 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. dxc5 Qa5 *

[ECO "A40"]

1. c4 e6 2. d4 Bb4+ 3. Nc3 f5 4. Qb3 Qe7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. Nc3 Qb6 *

[ECO "A40"]

1. d4 e6 2. g3 c5 3. Nf3 Qa5+ 4. Nc3 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. e3 c6 4. Nd2 Qb6 *

[ECO "A50"]

1. d4 Nf6 2. c4 c6 3. Nf3 d5 4. Qb3 Qb6 *

[ECO "D00"]

1. d4 d5 2. Bf4 c6 3. e3 Qb6 4. b3 Nf6 *

[ECO "B22"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. Nc3 cxd4 *

[ECO "D02"]

1. d4 d5 2. Bf4 Nf6 3. Nf3 c6 4. c3 Qb6 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. f4 Qb6 *

[ECO "B10"]

1. e4 c6 2. Nf3 d6 3. Nc3 Nf6 4. d4 Qa5 *

[ECO "B22"]

1. e4 c5 2. c3 Qa5 3. Nf3 d6 4. Na3 Nf6 *

[ECO "A43"]

1. Nf3 Nf6 2. d4 c5 3. d5 d6 4. Nc3 Qa5 *

[ECO "D70"]

1. c4 Nf6 2. d4 g6 3. g3 d5 4. cxd5 Qxd5 *

[ECO "D06"]

1. d4 d5 2. c4 Nf6 3. cxd5 Qxd5 4. Nc3 Qa5 *

[ECO "B10"]

1. e4 c6 2. d3 d5 3. Nd2 Qc7 4. g3 Nf6 *

[ECO "B22"]

1. e4 c5 2. c3 d6 3. d4 Nf6 4. Bd3 Qc7 *

[ECO "B22"]

1. e4 c5 2. c3 d6 3. Nf3 Nf6 4. Qc2 Qc7 *

[ECO "A31"]

1. Nf3 Nf6 2. c4 c5 3. d4 cxd4 4. Nxd4 e5 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. Nc3 c6 4. f4 Qb6 *

[ECO "B22"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 cxd4 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 Qh4+ 4. Kf1 d6 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Qd5 *

[ECO "C00"]

1. e4 e6 2. c4 d5 3. cxd5 exd5 4. exd5 Qxd5 *

[ECO "A41"]

1. d4 d6 2. g3 e5 3. dxe5 dxe5 4. Qxd8+ Kxd8 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Nd2 O-O *

[ECO "A45"]

1. d4 Nf6 2. c3 g6 3. Bg5 Bg7 4. Nd2 O-O *

[ECO "A40"]

1. d4 g6 2. c4 Bg7 3. Nf3 Nf6 4. e3 O-O *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. Nbd2 Bg7 4. e3 O-O *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nc4 Nxe4 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Bc4 a6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Nf3 Bb4+ 4. Bd2 Bxd2+ *

[ECO "A43"]

1. d4 c5 2. d5 g6 3. e4 Bg7 4. Nc3 Bxc3+ *

[ECO "A30"]

1. c4 c5 2. g3 g6 3. d4 Bg7 4. Nf3 cxd4 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 *

[ECO "A44"]

1. d4 c5 2. d5 e5 3. e4 d6 4. c4 Be7 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 Be7 4. e5 c5 *

[ECO "B10"]

1. e4 c6 2. Nc3 g6 3. Nf3 d5 4. h3 Bg7 *

[ECO "B10"]

1. e4 c6 2. Nf3 d6 3. d4 g6 4. Be2 Bg7 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. Bc4 Bg7 4. O-O d6 *

[ECO "C51"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 *

[ECO "B06"]

1. e4 g6 2. d4 d6 3. g3 Bg7 4. Bg2 c5 *

[ECO "B00"]

1. e4 d6 2. Nc3 g6 3. g3 c5 4. Bg2 Bg7 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. g3 g6 4. Bg2 Bg7 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. f4 c5 4. d5 d6 *

[ECO "B20"]

1. e4 c5 2. a3 g6 3. b4 Bg7 4. c3 d5 *

[ECO "A03"]

1. f4 d5 2. Nf3 g6 3. e3 Bg7 4. Be2 c5 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 c6 4. Ngf3 Bb4 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 c5 4. dxc5 Bxc5 *

[ECO "A04"]

1. Nf3 f5 2. d4 e6 3. g3 d6 4. Bg2 Be7 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. c3 Nf6 4. Be2 Nbd7 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. Bc4 Be7 4. d4 exd4 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Be7 4. Ngf3 dxe4 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. cxd5 exd5 4. Nf3 Be7 *

[ECO "A04"]

1. Nf3 g6 2. d4 Bg7 3. c3 d6 4. Bg5 h6 *

[ECO "A07"]

1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. c4 dxc4 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. c4 d4 4. d3 Bb4+ *

[ECO "A40"]

1. d4 e6 2. Nf3 d5 3. g3 f5 4. Bg2 Bd6 *

[ECO "A20"]

1. c4 e5 2. g3 g6 3. d4 Bb4+ 4. Nc3 exd4 *

[ECO "C38"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nc3 Bg7 4. e4 fxe4 *

[ECO "B20"]

1. e4 c5 2. Be2 Nc6 3. Nf3 d6 4. c3 e5 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nd2 Bg7 4. e4 Bxd4 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Bf4 Nf6 4. e3 Bb4+ *

[ECO "A17"]

1. c4 e6 2. Nc3 Nf6 3. d4 c6 4. Nf3 Bb4 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Bb5 c6 *

[ECO "C26"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Bc5 4. d3 c6 *

[ECO "A23"]

1. c4 e5 2. g3 Nf6 3. Nc3 c6 4. Bg2 Bb4 *

[ECO "A40"]

1. d4 e6 2. g3 c5 3. dxc5 Bxc5 4. Bg2 Nf6 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Qe2 Be7 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 c5 3. Nf3 e6 4. e3 Be7 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. g3 c6 4. Bg2 Bg7 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e4 Nc6 4. Nf3 Bg4 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 c5 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 c5 *

[ECO "A05"]

1. Nf3 Nf6 2. e3 g6 3. d4 c5 4. Be2 Bg7 *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. d5 g6 4. Nf3 Bg7 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nge2 Be7 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 d5 3. Nc3 e6 4. g3 Be7 *

[ECO "D31"]

1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Qc2 Nf6 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. g3 d5 4. Bg2 Bg7 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 Nd7 4. c4 e6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Nf6 3. e3 g6 4. h3 Bg7 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. e3 Bd6 *

[ECO "D00"]

1. Nc3 d5 2. d4 Nf6 3. Bf4 e6 4. e3 Bd6 *

[ECO "A45"]

1. d4 Nf6 2. c3 d5 3. Nf3 e6 4. Bf4 Bd6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d5 3. Bb2 e6 4. e3 Bd6 *

[ECO "E40"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d6 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 h6 4. Nc3 Bb4 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bd7 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Bf4 Bb4+ 4. Nc3 Ne4 *

[ECO "E40"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Bxc3+ *

[ECO "A01"]

1. b3 e5 2. e4 Nf6 3. Nc3 Bb4 4. a3 Bxc3 *

[ECO "A00"]

1. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nf6 4. Nc3 Ba5 *

[ECO "C43"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. dxe5 Bc5 *

[ECO "A04"]

1. Nf3 f5 2. g3 Nf6 3. d4 e6 4. Bg2 Bb4+ *

[ECO "A04"]

1. Nf3 f5 2. g3 Nf6 3. Bg2 e6 4. O-O Be7 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 e6 3. c3 Bd6 4. d4 Be7 *

[ECO "A85"]

1. d4 f5 2. c4 Nf6 3. Nc3 g6 4. g3 Bg7 *

[ECO "E60"]

1. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. Bg5 Ne4 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Nf3 Be7 *

[ECO "E10"]

1. c4 Nf6 2. d4 e6 3. Nf3 c5 4. e3 a6 *

[ECO "A40"]

1. d4 e6 2. Nf3 Nf6 3. g3 c5 4. Bg2 a6 *

[ECO "B20"]

1. e4 c5 2. Ne2 a6 3. d4 cxd4 4. Nxd4 Nf6 *

[ECO "B21"]

1. e4 c5 2. f4 d6 3. Nc3 Nf6 4. Nf3 a6 *

[ECO "A50"]

1. d4 Nf6 2. c4 a6 3. Nc3 e6 4. e4 d5 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 a6 4. Nf3 Nf6 *

[ECO "E15"]

1. c4 Nf6 2. d4 e6 3. Nf3 b6 4. g3 a6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 b6 4. c4 e6 *

[ECO "A45"]

1. d4 Nf6 2. g3 d5 3. Nf3 e6 4. Bg2 b6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. e4 Nf6 4. e5 Ne4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. g3 b5 4. e4 Nxe4 *

[ECO "A40"]

1. d4 e6 2. Nf3 Nf6 3. g3 b5 4. a4 b4 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 e4 4. Ng5 b5 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. Bg5 c5 4. c3 b6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nf6 3. b3 e6 4. Bb2 b6 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. e3 Nf6 4. c3 b6 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. e3 c5 4. Nbd2 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 c5 3. Bb2 e6 4. e3 b6 *

[ECO "E15"]

1. Nf3 Nf6 2. d4 b6 3. g3 e6 4. c4 c6 *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. f3 bxc4 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 Bf5 4. e3 e6 *

[ECO "A43"]

1. Nf3 Nf6 2. d4 c5 3. d5 b5 4. Bg5 d6 *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nf3 d6 *

[ECO "A31"]

1. c4 c5 2. Nf3 Nf6 3. d4 e6 4. Bg5 h6 *

[ECO "A22"]

1. c4 Nf6 2. Nc3 e5 3. a3 c6 4. Nf3 e4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. e3 c5 4. c3 cxd4 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Bg5 c5 4. d5 exd5 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. g3 Nf6 4. Nf3 c6 *

[ECO "A43"]

1. Nf3 Nf6 2. d4 c5 3. d5 e6 4. dxe6 fxe6 *

[ECO "B40"]

1. Nf3 c5 2. e4 e6 3. c3 Ne7 4. d4 cxd4 *

[ECO "A84"]

1. d4 f5 2. c4 g6 3. Nc3 Nf6 4. Nf3 c6 *

[ECO "C02"]

1. d4 e6 2. e4 c5 3. c3 d5 4. e5 Ne7 *

[ECO "A12"]

1. c4 c6 2. Nf3 d5 3. b3 Nf6 4. Bb2 g6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. c4 g6 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. c3 Nf6 4. Bf4 g6 *

[ECO "D04"]

1. Nf3 d5 2. d4 Nf6 3. e3 g6 4. Nc3 c6 *

[ECO "A40"]

1. d4 g6 2. e4 c6 3. c4 d5 4. e5 Nh6 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 c6 3. Nf3 d6 4. d4 g6 *

[ECO "A10"]

1. c4 d6 2. g3 Nf6 3. Bg2 g6 4. Nc3 c5 *

[ECO "B10"]

1. e4 c6 2. Nc3 d5 3. Nf3 dxe4 4. Nxe4 Nf6 *

[ECO "A04"]

1. Nf3 c5 2. Nc3 Nf6 3. e4 d6 4. g3 g6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. g3 Nf6 4. d3 g6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 d5 4. b3 c5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d5 4. Nf3 c6 *

[ECO "B53"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nf6 *

[ECO "D25"]

1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 c5 *

[ECO "B10"]

1. c4 c6 2. e4 d5 3. exd5 cxd5 4. Nf3 Nf6 *

[ECO "A31"]

1. c4 c5 2. Nf3 Nf6 3. d4 cxd4 4. Nxd4 d5 *

[ECO "B13"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Nc3 Nf6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 c5 4. c3 cxd4 *

[ECO "A53"]

1. c4 Nf6 2. d4 d6 3. Nc3 Nbd7 4. Nf3 c6 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. g3 c6 4. Qc2 Nf6 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. c3 Nf6 4. Bf4 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O e6 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Nf3 d6 *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. Nc3 Nf6 4. d4 d6 *

[ECO "B10"]

1. e4 c6 2. d3 e5 3. Nf3 Nf6 4. Be2 d6 *

[ECO "B10"]

1. e4 c6 2. d3 e5 3. Nf3 Nf6 4. Nbd2 d6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d4 d6 4. dxc5 Nf6 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 c5 4. d5 e6 *

[ECO "B53"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nc6 *

[ECO "D50"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 c5 *

[ECO "D01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 c5 4. e3 e6 *

[ECO "D03"]

1. Nf3 Nf6 2. d4 d5 3. Bg5 e6 4. e3 c5 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. b3 Nf6 4. Bb2 c5 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c5 3. b3 e6 4. g3 d5 *

[ECO "D40"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 c5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Nc3 e6 4. g3 c5 *

[ECO "A06"]

1. Nf3 d5 2. b3 Nf6 3. Bb2 Bg4 4. e3 Nbd7 *

[ECO "A10"]

1. c4 f5 2. Nc3 Nf6 3. g3 g6 4. Bg2 d6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d5 4. e3 g6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d5 4. c3 g5 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 Nxc3 4. dxc3 d6 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 d6 3. f4 d5 4. e5 d4 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. c4 Nf6 *

[ECO "D24"]

1. Nf3 d5 2. d4 Nf6 3. c4 dxc4 4. Nc3 Nd5 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. b3 d6 4. Nf3 dxe5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. h4 d5 4. Nd2 Nxg5 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. Bf4 Nf6 4. e3 Bg4 *

[ECO "B00"]

1. e4 d6 2. Nc3 e5 3. Bc4 Nf6 4. d3 g6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e3 g6 4. d4 d6 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 g6 4. e4 e5 *

[ECO "C00"]

1. d4 e6 2. e4 g6 3. Nf3 d6 4. Nc3 Nf6 *

[ECO "D00"]

1. d4 d5 2. Bg5 Nf6 3. Bxf6 gxf6 4. Nc3 e6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. Nd2 h6 4. Bh4 d5 *

[ECO "C00"]

1. e4 e6 2. Qe2 Nf6 3. e5 Nd5 4. Nf3 d6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. Bxf6 gxf6 4. d5 Qb6 *

[ECO "D50"]

1. d4 e6 2. c4 Nf6 3. Nc3 d5 4. Bg5 dxc4 *

[ECO "A06"]

1. b3 d5 2. Nf3 Nf6 3. Bb2 e6 4. c4 dxc4 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. c4 Nf6 4. Bf4 dxc4 *

[ECO "D06"]

1. d4 Nf6 2. c4 d5 3. e3 e6 4. Bd3 dxc4 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 dxe4 4. dxe4 Nf6 *

[ECO "A00"]

1. g3 d5 2. Bg2 e5 3. d4 exd4 4. Qxd4 Nf6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e3 d5 4. cxd5 Nxd5 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. Bg2 d6 4. Nc3 Nf6 *

[ECO "A04"]

1. Nf3 d6 2. d4 f5 3. b3 Nf6 4. Nc3 e6 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nf3 c5 4. d5 Nf6 *

[ECO "A40"]

1. d4 e6 2. g3 f5 3. Bg2 Nf6 4. Nd2 d5 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. e5 Nfd7 *

[ECO "C43"]

1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Nd5 *

[ECO "A80"]

1. d4 f5 2. Nc3 Nf6 3. Bg5 e6 4. e4 fxe4 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. Bg5 g6 4. Bxf6 exf6 *

[ECO "B10"]

1. e4 c6 2. Nc3 d5 3. exd5 cxd5 4. Nf3 a6 *

[ECO "C00"]

1. d4 a6 2. e4 e6 3. Bd3 d5 4. Nc3 dxe4 *

[ECO "D30"]

1. c4 e6 2. d4 d5 3. Nf3 a6 4. cxd5 exd5 *

[ECO "D31"]

1. d4 d5 2. c4 e6 3. Nc3 b6 4. cxd5 exd5 *

[ECO "C68"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e4 b5 4. a4 c6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. c3 b6 4. d4 d6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 b6 4. g3 d6 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 c6 4. c3 b6 *

[ECO "B21"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. g3 c5 4. b4 f6 *

[ECO "A80"]

1. d4 f5 2. g4 fxg4 3. e4 d5 4. e5 c5 *

[ECO "A07"]

1. Nf3 d5 2. g3 g6 3. Bg2 c5 4. c4 d4 *

[ECO "A07"]

1. Nf3 d5 2. g3 g6 3. Bg2 c5 4. d4 cxd4 *

[ECO "D02"]

1. Nf3 d5 2. d4 c5 3. c4 dxc4 4. Nc3 cxd4 *

[ECO "C01"]

1. d4 e6 2. e4 d5 3. exd5 exd5 4. c4 c6 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. c4 dxc4 4. Qa4+ c6 *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. d4 exd4 4. Qxd4 d6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. b3 d6 4. Bb2 e5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Bc4 d6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. c4 d6 4. d4 cxd4 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. d4 dxc4 4. e3 c5 *

[ECO "D31"]

1. d4 e6 2. c4 d5 3. Nc3 dxc4 4. e4 c5 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 Be7 *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 c5 *

[ECO "A34"]

1. c4 c5 2. Nc3 e6 3. Nf3 d5 4. cxd5 exd5 *

[ECO "B20"]

1. e4 c5 2. g3 e6 3. Bg2 d5 4. exd5 exd5 *

[ECO "A09"]

1. Nf3 d5 2. c4 c6 3. e3 e6 4. b3 f5 *

[ECO "D02"]

1. Nf3 d5 2. d4 Bg4 3. Ne5 Bf5 4. g4 Bc8 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. Bg2 g6 4. d4 exd4 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 g6 *

[ECO "A21"]

1. c4 e5 2. Nc3 g6 3. d4 d6 4. dxe5 dxe5 *

[ECO "A80"]

1. d4 f5 2. Nf3 e6 3. d5 exd5 4. Qxd5 d6 *

[ECO "A28"]

1. c4 Nf6 2. Nc3 e5 3. e3 Nc6 4. Nf3 Be7 *

[ECO "A20"]

1. c4 e5 2. Nf3 d6 3. d4 e4 4. Ng1 f5 *

[ECO "D00"]

1. d4 d5 2. Bg5 f6 3. Bd2 e5 4. dxe5 fxe5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Bc5 4. b4 Bf8 *

[ECO "A45"]

1. d4 Nf6 2. c3 d6 3. Nf3 Bg4 4. Qb3 Qc8 *

[ECO "B24"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Rb8 *

[ECO "C64"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Qf6 *

[ECO "B02"]

1. e4 Nf6 2. e5 e6 3. exf6 Qxf6 4. Nc3 Nc6 *

[ECO "A00"]

1. Nc3 d5 2. e4 dxe4 3. Nxe4 Qd5 4. Qf3 Nc6 *

[ECO "D00"]

1. d4 d5 2. e3 Nc6 3. c4 e5 4. cxd5 Qxd5 *

[ECO "B00"]

1. e4 Nc6 2. d4 e5 3. dxe5 Nxe5 4. Nf3 Qf6 *

[ECO "E20"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. a3 Bxc3+ *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 e5 4. d3 Be7 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 e5 4. Nd5 Be7 *

[ECO "A30"]

1. c4 c5 2. g3 Nc6 3. Bg2 g6 4. e4 Bg7 *

[ECO "A04"]

1. Nf3 c5 2. c4 g6 3. Nc3 Bg7 4. b3 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 g6 4. h3 Bg7 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c3 Bg7 4. Na3 Nc6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 g6 4. a3 Bg7 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c4 Bg7 4. d4 Na6 *

[ECO "C00"]

1. e4 e6 2. Qe2 Nc6 3. Nf3 Be7 4. d4 d5 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 Nc6 4. Nf3 Be7 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bh4 g5 4. e3 Nf6 *

[ECO "A10"]

1. c4 g6 2. Nc3 Bg7 3. g3 d6 4. Bg2 Nc6 *

[ECO "A04"]

1. Nf3 d6 2. d4 g6 3. c4 Bg7 4. Nc3 Nc6 *

[ECO "A04"]

1. Nf3 d6 2. d4 g6 3. g3 Bg7 4. Bg2 Nc6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. Bf4 Nc6 4. e3 Bb4+ *

[ECO "C25"]

1. e4 e5 2. Nc3 Bc5 3. Bc4 d6 4. d3 Nc6 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. e4 Bc5 4. Nf3 d6 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. g3 Bd6 4. Bg2 Nd7 *

[ECO "A40"]

1. d4 e6 2. g3 d5 3. Nf3 Nd7 4. Nc3 Bb4 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. c4 Nd7 *

[ECO "C25"]

1. e4 e5 2. Nc3 Bc5 3. Bc4 Nc6 4. Qg4 g6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Qb6 4. Nc3 e6 *

[ECO "A20"]

1. c4 e5 2. g3 g6 3. e4 Bc5 4. Nf3 Nc6 *

[ECO "B00"]

1. e4 Nc6 2. Nc3 g6 3. Nf3 Bg7 4. d4 e5 *

[ECO "C25"]

1. e4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. f4 Nc6 4. Nf3 Bc5 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Bc5 4. Nxe5 Bxf2+ *

[ECO "C22"]

1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3 Bb4+ *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. Qb3 Nc6 4. a3 Nd4 *

[ECO "C64"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. d3 Nd4 *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 f5 4. g3 Be7 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. c4 Nc6 4. d5 Nd4 *

[ECO "C48"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bd6 *

[ECO "A17"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 Bb4 4. e3 Nc6 *

[ECO "E22"]

1. c4 Nf6 2. d4 e6 3. Nc3 Bb4 4. Qb3 Nc6 *

[ECO "E20"]

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Nc3 Nc6 *

[ECO "C55"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Qe2 Bc5 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d3 Bc5 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. d3 Bc5 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. a3 Bc5 *

[ECO "C26"]

1. e4 e5 2. Nc3 Nf6 3. g3 Bb4 4. Bg2 Nc6 *

[ECO "C65"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Qe2 Bd6 *

[ECO "C00"]

1. e4 e6 2. Qe2 Nc6 3. Nf3 Be7 4. d4 Nf6 *

[ECO "C28"]

1. e4 e5 2. Bc4 Nc6 3. Nc3 Nf6 4. d3 Be7 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 Be7 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d3 Be7 *

[ECO "A15"]

1. c4 Nf6 2. g3 g6 3. Nc3 Nc6 4. Bg2 Bg7 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 Nf6 4. Bb5 a6 *

[ECO "C65"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Qe2 a6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. e3 Nc6 4. Nf3 Nf6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Nc6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 b6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Nf6 4. Bxc6 bxc6 *

[ECO "C62"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 Bd7 *

[ECO "D01"]

1. d4 d5 2. Nc3 Nf6 3. Bg5 Nbd7 4. Qd2 c6 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. Bg5 Nf6 4. Nbd2 Nbd7 *

[ECO "D02"]

1. d4 d5 2. Bf4 Nf6 3. Nf3 c6 4. c3 Nbd7 *

[ECO "B10"]

1. e4 c6 2. c4 d6 3. d4 Nf6 4. Nc3 Nbd7 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 d6 3. g3 c6 4. Bg2 Nbd7 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. c4 Nf6 *

[ECO "D04"]

1. Nf3 d5 2. d4 Nf6 3. e3 c5 4. Nbd2 Nbd7 *

[ECO "C00"]

1. c4 e6 2. e4 c5 3. Nc3 Nc6 4. Nge2 Nf6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nf6 3. g3 e6 4. d3 Nc6 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. e3 Nf6 4. Nbd2 Nc6 *

[ECO "D15"]

1. d4 d5 2. Nf3 c6 3. c4 Nf6 4. Nc3 dxc4 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. c4 e6 *

[ECO "B22"]

1. e4 c5 2. c3 e5 3. Nf3 Nc6 4. Bb5 Nf6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nf6 3. g3 Nc6 4. Nc3 e5 *

[ECO "A34"]

1. c4 c5 2. Nc3 e5 3. g3 Nc6 4. Bg2 Nf6 *

[ECO "B20"]

1. e4 c5 2. a4 g6 3. Nc3 Nc6 4. Nf3 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. dxc5 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 Nf6 4. e5 Ng4 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 Nc6 *

[ECO "B29"]

1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. b3 Nc6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. dxc5 Na6 4. Nc3 Nxc5 *

[ECO "A35"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. g3 d5 *

[ECO "B22"]

1. e4 c5 2. c3 d5 3. d3 Nf6 4. Nd2 Nc6 *

[ECO "A00"]

1. Nc3 Nf6 2. Nf3 d5 3. d3 c5 4. e3 Nc6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nf6 3. g3 Nc6 4. d3 d6 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. f4 Nf6 4. Qf3 Nc6 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 Ne7 4. Nf3 Nbc6 *

[ECO "A45"]

1. d4 Nf6 2. g3 g6 3. Bg2 d6 4. Nc3 Na6 *

[ECO "D01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 Nc6 4. e3 h6 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O *

[ECO "B07"]

1. d4 d6 2. e4 Nf6 3. Nc3 Nbd7 4. f4 Nb6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. c4 dxc4 4. Qa4+ Nc6 *

[ECO "E00"]

1. d4 e6 2. c4 Nf6 3. f3 d5 4. Nc3 Nc6 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. Nf3 Nc6 4. Nbd2 Nf6 *

[ECO "E01"]

1. d4 e6 2. g3 Nf6 3. Bg2 d5 4. c4 Nc6 *

[ECO "A18"]

1. c4 e6 2. Nc3 Nc6 3. e4 Nf6 4. d4 d5 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. f4 g6 4. Nf3 Bg7 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. b3 d5 *

[ECO "A00"]

1. g3 e5 2. Bg2 Nf6 3. c3 d5 4. c4 Nc6 *

[ECO "A20"]

1. c4 e5 2. e3 Nc6 3. Nc3 Nf6 4. a3 d5 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. d4 d5 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 Nc6 4. Nc3 Nf6 *

[ECO "C23"]

1. e4 e5 2. Bc4 Nc6 3. d3 Nf6 4. f4 d6 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. g3 Bc5 *

[ECO "A28"]

1. c4 Nf6 2. Nc3 Nc6 3. Nf3 e5 4. d3 d6 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. d4 Nc6 4. Nc3 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d6 3. Nf3 Nbd7 4. e3 e5 *

[ECO "B07"]

1. d4 d6 2. e4 Nf6 3. Nc3 Nbd7 4. f4 e6 *

[ECO "D01"]

1. d4 d5 2. Nc3 Nf6 3. Bg5 Nbd7 4. f3 e6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. Bg5 Nf6 4. Nbd2 Nbd7 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. g3 Nd7 4. Nc3 Ngf6 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. g3 g6 4. Nf3 Nbd7 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. d4 Nbd7 4. Bb2 g6 *

[ECO "D00"]

1. d4 d5 2. Bg5 Nf6 3. Nd2 Nbd7 4. Ngf3 h6 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 Nf6 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. e3 Nf6 4. a3 g6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. a3 h6 *

[ECO "C00"]

1. e4 e6 2. Qe2 e5 3. c3 Nf6 4. Nf3 Nc6 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. Qxd4 Nf6 4. Nf3 Nc6 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. Nc3 Ng6 *

[ECO "A04"]

1. Nf3 f5 2. d4 Nf6 3. e3 e6 4. c4 Nc6 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. g3 Nf6 4. Bg2 Nc6 *

[ECO "A20"]

1. c4 e5 2. d3 f5 3. g3 Nf6 4. Bg2 Nc6 *

[ECO "C65"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Ne7 *

[ECO "D30"]

1. c4 e6 2. d4 d5 3. c5 Nc6 4. Nc3 b6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 e6 4. Bxc6 bxc6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nd7 3. d4 e6 4. Bg2 c6 *

[ECO "B10"]

1. e4 c6 2. d3 d5 3. Nd2 e5 4. Ngf3 Nd7 *

[ECO "A00"]

1. g3 d5 2. Bg2 e5 3. d3 c6 4. Nf3 Nd7 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. Qa4+ Nd7 4. Nf3 c6 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. g3 Nc6 4. Bg2 g6 *

[ECO "B40"]

1. Nf3 c5 2. e4 e6 3. d3 Nc6 4. c3 g6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. Nc3 e5 4. d3 g6 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. g3 Nc6 4. Bg2 cxd4 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 Nge7 *

[ECO "A43"]

1. d4 c5 2. c3 e6 3. Nf3 Nc6 4. e4 cxd4 *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. f4 exf4 4. Nc3 Nc6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. b3 Nc6 4. Bb5 Nd4 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. c4 Nc6 4. Nc3 Nd4 *

[ECO "A20"]

1. c4 e5 2. g3 c6 3. d4 exd4 4. Qxd4 Na6 *

[ECO "B22"]

1. e4 c6 2. c3 c5 3. Nf3 Na6 4. d4 e6 *

[ECO "B21"]

1. e4 c5 2. f4 g6 3. Nf3 Nc6 4. d4 cxd4 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. a4 g6 *

[ECO "B27"]

1. e4 c5 2. Nf3 h6 3. Nc3 Nc6 4. d4 cxd4 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. a3 g6 *

[ECO "B32"]

1. Nf3 c5 2. e4 Nc6 3. d4 cxd4 4. c3 dxc3 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. c3 g6 4. d4 d5 *

[ECO "A07"]

1. Nf3 d5 2. g3 c5 3. Nc3 Nc6 4. d3 g6 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. Bc4 Nc6 4. d3 g6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. Nd2 Nd7 4. e5 Nb6 *

[ECO "B22"]

1. e4 c5 2. c3 Nc6 3. d4 d5 4. dxc5 dxe4 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 d6 4. e5 dxe5 *

[ECO "B21"]

1. e4 c5 2. f4 d5 3. Nc3 d4 4. Nce2 Nc6 *

[ECO "B32"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d5 *

[ECO "A30"]

1. c4 c5 2. g3 e6 3. Nf3 d5 4. b3 Nc6 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. e3 e6 4. d4 d5 *

[ECO "D00"]

1. d4 d5 2. Bf4 e6 3. e3 c5 4. c3 Nc6 *

[ECO "A08"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 *

[ECO "B20"]

1. e4 c5 2. Ne2 e6 3. d3 d5 4. Nd2 Nc6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. g3 Nc6 4. Bg2 d5 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. Nf3 Nc6 4. g3 d5 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. f4 Nc6 4. g3 d5 *

[ECO "A08"]

1. Nf3 c5 2. g3 d5 3. Bg2 e6 4. d3 Nc6 *

[ECO "D12"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 *

[ECO "A43"]

1. d4 Nf6 2. Nf3 c5 3. d5 b5 4. c4 Bb7 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. g3 e5 4. d3 d6 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. Nc3 Nc6 4. Bc4 e6 *

[ECO "B20"]

1. e4 c5 2. Bc4 e6 3. Nc3 d6 4. d3 Nc6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 e6 4. O-O d6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. Nbd2 d6 *

[ECO "B20"]

1. e4 c5 2. g3 Nc6 3. Bg2 e6 4. d3 d6 *

[ECO "B12"]

1. e4 c6 2. d4 Na6 3. Nf3 g6 4. Nc3 Nc7 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nc6 3. c4 d4 4. Bg2 g6 *

[ECO "A40"]

1. d4 g6 2. e4 d6 3. c4 e5 4. d5 Na6 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bg4 4. c4 e6 *

[ECO "A40"]

1. d4 e6 2. Nf3 Nc6 3. e4 d5 4. Bd3 dxe4 *

[ECO "C10"]

1. d4 e6 2. e4 d5 3. Nc3 Nc6 4. exd5 exd5 *

[ECO "A00"]

1. h3 e5 2. c3 d5 3. d4 Nc6 4. Be3 exd4 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Nd2 Nc6 4. Ngf3 e5 *

[ECO "D07"]

1. c4 Nc6 2. d4 d5 3. e3 e5 4. dxe5 d4 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. e3 Nc6 4. Bxc4 e5 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. d4 exd4 4. Qxd4 Nc6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 d6 4. d4 exd4 *

[ECO "A40"]

1. d4 e6 2. Nf3 Nc6 3. e4 d5 4. e5 f6 *

[ECO "A00"]

1. c3 d5 2. h3 Nc6 3. d4 e5 4. Be3 f6 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 g6 4. Nf3 Bg7 *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 f5 4. g3 d6 *

[ECO "C63"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. Bxc6 dxc6 *

[ECO "B00"]

1. e4 Nc6 2. d4 e5 3. d5 Nce7 4. Be3 f5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. d3 Nc6 4. Bg2 Ba6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 Bf5 4. c4 Nc6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. c3 Nc6 4. Nbd2 Bf5 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nc3 Bf5 4. Nf3 Nc6 *

[ECO "D00"]

1. d4 d5 2. e3 Nf6 3. Bd3 Nc6 4. Nf3 Bg4 *

[ECO "D02"]

1. Nf3 d5 2. d3 Nc6 3. d4 Bg4 4. Nbd2 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d5 3. Bb2 Bg4 4. Nh4 Nc6 *

[ECO "B10"]

1. e4 c6 2. d3 d5 3. Nd2 e5 4. Ngf3 Bd6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. e3 Bf5 4. Bd2 Nc6 *

[ECO "A04"]

1. Nf3 d6 2. d4 Nf6 3. b3 Bg4 4. e3 Nbd7 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d6 3. d4 Bg4 4. Bg2 Nbd7 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. d3 Bg4 4. Nbd2 Nbd7 *

[ECO "B23"]

1. e4 c5 2. Nc3 b6 3. g3 Bb7 4. Bg2 Nc6 *

[ECO "B21"]

1. e4 c5 2. f4 b6 3. Nf3 Bb7 4. Nc3 Nc6 *

[ECO "A40"]

1. c4 e6 2. d4 b6 3. e4 Bb7 4. Qc2 Nc6 *

[ECO "B20"]

1. e4 c5 2. b3 Nc6 3. Nf3 d6 4. Bb5 Bd7 *

[ECO "B23"]

1. e4 c5 2. Ne2 Nc6 3. Nbc3 d6 4. d4 Bd7 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. Bf4 Bg4 4. Nbd2 Nd7 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 Nd7 4. Nc3 c6 *

[ECO "A06"]

1. Nf3 d5 2. e3 c5 3. Bb5+ Bd7 4. Bxd7+ Nxd7 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. e4 d6 4. Nc3 Bg4 *

[ECO "D00"]

1. d4 d5 2. Bg5 f6 3. Bf4 Nc6 4. Nf3 Bg4 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bf5 3. c3 e6 4. e3 Nc6 *

[ECO "A00"]

1. a3 Nc6 2. d4 d5 3. Bf4 Bf5 4. e3 e6 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. Nc3 e6 4. Nf3 Nc6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nc6 3. e3 Bg4 4. c4 e6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nc6 3. Bf4 Bg4 4. Nbd2 e6 *

[ECO "C62"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. Nc3 Bg4 *

[ECO "A49"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 d6 *

[ECO "C50"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 4. c3 Bg4 *

[ECO "D30"]

1. c4 e6 2. d4 d5 3. c5 Nc6 4. Nc3 Bd7 *

[ECO "B00"]

1. e4 Nc6 2. d4 d5 3. Nc3 e6 4. e5 Bd7 *

[ECO "A40"]

1. d4 e6 2. Nf3 Nc6 3. e4 d5 4. e5 Bd7 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. g3 Be6 4. Nf3 Nd7 *

[ECO "A07"]

1. g3 d5 2. Nf3 Bg4 3. Bg2 Nd7 4. d3 e6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. e4 Bb7 4. d5 Bb4+ *

[ECO "A40"]

1. d4 b6 2. Nf3 Bb7 3. g3 g6 4. Bg2 Bg7 *

[ECO "D02"]

1. Nf3 d5 2. d4 Bf5 3. Bf4 e6 4. e3 Bd6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. Nc3 c5 4. e3 Bb7 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Nf3 d5 *

[ECO "A04"]

1. Nf3 b6 2. g3 c5 3. e4 Bb7 4. Nc3 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b6 3. d3 Bb7 4. e4 c5 *

[ECO "A04"]

1. Nf3 c5 2. g3 b6 3. Bg2 Bb7 4. b3 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. g3 c5 3. d5 b5 4. Bg2 Bb7 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b6 3. b3 Bb7 4. Bg2 d6 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. c4 d5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. e4 Bb7 4. d5 Nf6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 b6 3. b3 e6 4. g3 Bb7 *

[ECO "E12"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nbd2 Bb7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Nc3 Bb7 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 Nf6 4. d4 cxd4 *

[ECO "A04"]

1. Nf3 b6 2. e4 Bb7 3. Nc3 e6 4. d4 Nf6 *

[ECO "B00"]

1. e4 b6 2. d4 Bb7 3. Nc3 e6 4. Bd3 Nf6 *

[ECO "B00"]

1. e4 b6 2. d4 Bb7 3. Bd3 Nf6 4. Nd2 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b6 3. b3 Bb7 4. Bg2 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. b3 b6 4. Bg2 Bb7 *

[ECO "A06"]

1. Nf3 d5 2. b3 c5 3. e3 Nf6 4. Bb5+ Bd7 *

[ECO "D06"]

1. d4 d5 2. c4 Bf5 3. cxd5 Nf6 4. Nf3 c6 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. e3 Nf6 4. Nbd2 Bf5 *

[ECO "D00"]

1. d4 d5 2. Bg5 Nf6 3. e3 c6 4. Nd2 Bf5 *

[ECO "D00"]

1. d4 d5 2. Bg5 Nf6 3. e3 c6 4. Bd3 Bg4 *

[ECO "A29"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Nd4 *

[ECO "B11"]

1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. d4 Nf6 *

[ECO "A00"]

1. Nc3 Nf6 2. e4 d6 3. g3 c6 4. d4 Bg4 *

[ECO "D01"]

1. Nc3 Nf6 2. d4 d5 3. Bg5 Bf5 4. f3 c5 *

[ECO "B08"]

1. Nf3 Nf6 2. Nc3 d6 3. d4 g6 4. e4 Bg4 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. Bf4 g6 4. e3 Bg4 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d6 3. e4 Bg4 4. h3 Bh5 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e3 Be6 4. Ne2 Nf6 *

[ECO "A00"]

1. b4 d5 2. Bb2 Bg4 3. h3 Bh5 4. g3 Nf6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 Bg4 4. h3 Bxf3 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. b3 Bxf3 4. exf3 Nf6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. Nc3 Nd4 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. g3 Bf5 4. c4 dxc4 *

[ECO "D06"]

1. d4 d5 2. c4 Bf5 3. cxd5 Nf6 4. Nc3 Nxd5 *

[ECO "A41"]

1. c4 d6 2. d4 e5 3. d5 Nf6 4. Nc3 Bf5 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. Bc4 Bg4 4. d3 Nf6 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Bf4 Bf5 4. e3 e6 *

[ECO "D04"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bf5 4. Be2 e6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 Bg4 4. c4 e6 *

[ECO "D04"]

1. Nf3 d5 2. d4 Nf6 3. e3 Bg4 4. Bd3 e6 *

[ECO "A06"]

1. Nf3 d5 2. e3 Bg4 3. Be2 Nf6 4. O-O e6 *

[ECO "D05"]

1. Nf3 d5 2. d4 Nf6 3. e3 e6 4. Nc3 Bd7 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. g3 Nc6 4. Bg2 g6 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 d6 3. d4 g6 4. g3 Bd7 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 g6 4. Bb5+ Bd7 *

[ECO "D80"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Qa4+ Bd7 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 Nf6 4. Qa4+ Bd7 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 a6 4. e5 Bd7 *

[ECO "A13"]

1. c4 e6 2. Nf3 c5 3. Nc3 b6 4. g3 Bb7 *

[ECO "C00"]

1. d4 e6 2. e4 b6 3. Nf3 c5 4. Nc3 Bb7 *

[ECO "B20"]

1. e4 c5 2. d3 e6 3. Nf3 b5 4. g3 Bb7 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. c4 c6 4. Nc3 Nf6 *

[ECO "A04"]

1. Nf3 c5 2. c4 b6 3. e3 Bb7 4. d4 cxd4 *

[ECO "B22"]

1. e4 c5 2. c3 b6 3. d4 Bb7 4. Bd3 cxd4 *

[ECO "A10"]

1. c4 b6 2. b3 Bb7 3. Bb2 e6 4. Nc3 f5 *

[ECO "A01"]

1. b3 b6 2. Bb2 Bb7 3. e3 e6 4. Nf3 f5 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. Nc3 e6 4. Bb5+ Bd7 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c3 d6 4. Bb5+ Bd7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. g4 Bd7 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. Bf4 Bg4 4. Nbd2 g6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. e3 Be6 4. Nc3 c6 *

[ECO "A11"]

1. c4 c6 2. Nf3 d5 3. g3 Bg4 4. cxd5 Bxf3 *

[ECO "B12"]

1. d4 c6 2. e4 d5 3. e5 Bf5 4. h4 h5 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bg4 4. h3 Bxf3 *

[ECO "D00"]

1. d4 d5 2. Bf4 c6 3. Nf3 Bg4 4. Ne5 Bf5 *

[ECO "D11"]

1. d4 d5 2. c4 c6 3. Nf3 dxc4 4. e3 Bg4 *

[ECO "B11"]

1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. d4 dxe4 *

[ECO "B11"]

1. e4 c6 2. Nf3 d5 3. Nc3 Bg4 4. h3 dxe4 *

[ECO "A11"]

1. c4 c6 2. Nf3 d5 3. e3 Bf5 4. cxd5 cxd5 *

[ECO "D00"]

1. d4 d5 2. Bf4 c6 3. e3 Bf5 4. c4 e6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bf5 3. Bg2 c6 4. b3 e6 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Bf4 Bg4 4. Nbd2 e6 *

[ECO "B11"]

1. e4 c6 2. Nf3 d5 3. Nc3 Bg4 4. d4 e6 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nc3 c6 4. f4 d5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. f4 e6 *

[ECO "A12"]

1. Nf3 d5 2. c4 c6 3. b3 Bg4 4. e3 e5 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 e5 4. Ng3 Be6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 Bxf3 4. gxf3 g6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. g3 Bxf3 4. exf3 d5 *

[ECO "D00"]

1. Nc3 d5 2. d4 Bf5 3. Bg5 h6 4. Bf4 e6 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. c4 dxc4 4. e3 e6 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. Bc4 Be6 4. Bxe6 fxe6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. d4 Bg4 4. Nf3 Qxd5 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. e3 Bf5 4. Qb3 Qb6 *

[ECO "A11"]

1. c4 c6 2. Nf3 d5 3. g3 Bg4 4. Qb3 Qb6 *

[ECO "B12"]

1. d4 c6 2. e4 d5 3. e5 Bf5 4. Nf3 Qb6 *

[ECO "B10"]

1. e4 c6 2. d3 d5 3. Nd2 Qc7 4. Ngf3 Bg4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. c3 Qc7 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c4 Qa5 4. Nc3 Bg7 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. c3 d5 4. exd5 Qxd5 *

[ECO "A20"]

1. c4 e5 2. g3 d5 3. cxd5 Qxd5 4. Nf3 Bb4 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. d5 Bb4+ 4. Bd2 Qe7 *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. Nf3 Qc7 4. Nc3 Bb4 *

[ECO "C42"]

1. e4 e5 2. Nc3 Nf6 3. Nf3 Bb4 4. Nxe5 Qe7 *

[ECO "A43"]

1. d4 Nf6 2. Nf3 c5 3. d5 b5 4. Bg5 Ne4 *

[ECO "A43"]

1. d4 c5 2. d5 f5 3. Nc3 Nf6 4. Bg5 Qb6 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 c5 4. dxc5 Qa5 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. Nf3 c5 4. g3 Qa5+ *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. Bxf6 gxf6 4. dxc5 Qa5+ *

[ECO "D00"]

1. d4 d5 2. Bg5 c6 3. e3 Qb6 4. b3 Nf6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c6 3. b3 d5 4. g3 Qb6 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Bf4 Nf6 4. Nbd2 Qb6 *

[ECO "B07"]

1. Nc3 Nf6 2. d4 c6 3. e4 d6 4. Bg5 Qb6 *

[ECO "A40"]

1. d4 e6 2. c3 Nf6 3. Bg5 h6 4. Bxf6 Qxf6 *

[ECO "A40"]

1. d4 e6 2. g3 c5 3. Nf3 Qa5+ 4. Nbd2 cxd4 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 b6 4. e4 d6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. g3 d5 4. exd5 Qxd5 *

[ECO "A04"]

1. Nf3 f5 2. e4 fxe4 3. Ng5 d5 4. d3 Qd6 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. f4 d5 4. exd5 Qxd5 *

[ECO "A20"]

1. c4 e5 2. a3 d5 3. cxd5 Qxd5 4. Nc3 Qa5 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c3 d6 4. d4 Qc7 *

[ECO "A17"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O *

[ECO "C26"]

1. e4 e5 2. Nc3 Nf6 3. g3 Bb4 4. Bg2 O-O *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. b4 O-O *

[ECO "A15"]

1. c4 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 O-O *

[ECO "A16"]

1. c4 Nf6 2. Nc3 g6 3. e3 Bg7 4. Nf3 O-O *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 g6 *

[ECO "E60"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Bf4 O-O *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nc3 d6 4. Be2 a6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 a5 4. Nf3 d6 *

[ECO "A40"]

1. c4 e6 2. d4 Bb4+ 3. Bd2 a5 4. Nc3 d6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 a5 4. Nf3 d5 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 a5 4. a3 Bxd2+ *

[ECO "A40"]

1. d4 e6 2. g3 c5 3. Nf3 b5 4. dxc5 Bxc5 *

[ECO "A34"]

1. c4 c5 2. Nc3 g6 3. Nf3 Bg7 4. b3 b6 *

[ECO "A10"]

1. c4 g6 2. g3 Bg7 3. Bg2 c5 4. e3 e6 *

[ECO "A30"]

1. c4 c5 2. Nf3 g6 3. d4 Bg7 4. d5 f5 *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nc3 Nf6 *

[ECO "A04"]

1. Nf3 g6 2. d4 Bg7 3. g3 c5 4. c3 cxd4 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. h4 d5 *

[ECO "B10"]

1. e4 c6 2. Nf3 g6 3. d4 Bg7 4. h4 d5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. Nd2 g6 4. Ngf3 Bg7 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. Nc3 g6 4. d3 Bg7 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. d3 g6 4. Be2 Bg7 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. d4 c5 4. d5 d6 *

[ECO "D30"]

1. d4 e6 2. c4 d5 3. e3 c6 4. Nd2 Bd6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. Nc3 g6 4. g3 Bg7 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Bf4 e6 4. e3 Bd6 *

[ECO "D00"]

1. d4 d5 2. Bf4 e6 3. Nf3 c5 4. c3 Bd6 *

[ECO "D02"]

1. d4 d5 2. Nf3 c5 3. dxc5 e6 4. e3 Bxc5 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Nd2 d5 4. a3 Be7 *

[ECO "C10"]

1. d4 d5 2. Nc3 e6 3. e4 Be7 4. g3 dxe4 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 Be7 4. exd5 exd5 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. c3 Bg7 4. Bg5 h6 *

[ECO "A40"]

1. d4 g6 2. Nf3 Bg7 3. Nc3 d5 4. e4 dxe4 *

[ECO "A00"]

1. g3 d5 2. d3 g6 3. Bg2 Bg7 4. Nd2 d4 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. e3 g6 4. g3 Bg7 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. g3 Bxc3 4. bxc3 d6 *

[ECO "A20"]

1. c4 e5 2. e3 g6 3. d4 d6 4. Nc3 Bg7 *

[ECO "C25"]

1. e4 e5 2. Nc3 Bc5 3. Nf3 d6 4. d4 exd4 *

[ECO "C00"]

1. e4 e6 2. d4 d5 3. c4 dxe4 4. Nc3 Bb4 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. c5 e5 4. Nxe5 Bxc5 *

[ECO "A04"]

1. Nf3 g6 2. g3 Bg7 3. Bg2 e5 4. c4 e4 *

[ECO "A21"]

1. c4 e5 2. Nc3 g6 3. Nf3 Bg7 4. d4 exd4 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Bc5 4. Nf3 e4 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Nc3 Bxc3+ 4. bxc3 f5 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 Bxd2+ 4. Qxd2 f5 *

[ECO "E12"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Bg5 Bb4+ *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. e4 Bg7 4. Nc3 d6 *

[ECO "E20"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bd2 c5 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c6 3. Qa4 e6 4. d4 Be7 *

[ECO "A23"]

1. c4 e5 2. Nc3 Nf6 3. g3 c6 4. Bg2 Be7 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 c5 3. Bb2 e6 4. c4 Be7 *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. Qh5 Nf6 4. Qxe5+ Be7 *

[ECO "A00"]

1. g3 Nf6 2. c4 c6 3. b3 g6 4. Bb2 Bg7 *

[ECO "A00"]

1. g3 g6 2. c4 c6 3. Bg2 Bg7 4. Nc3 Nf6 *

[ECO "A50"]

1. d4 Nf6 2. c4 c6 3. e3 g6 4. Nc3 Bg7 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. b3 g6 4. Bb2 Bg7 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 g6 3. g3 c5 4. Nc3 Bg7 *

[ECO "C43"]

1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 *

[ECO "A00"]

1. g3 g6 2. c4 Nf6 3. Bg2 Bg7 4. Nc3 c5 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. b3 c5 *

[ECO "E60"]

1. c4 Nf6 2. d4 g6 3. g3 Bg7 4. Nc3 c5 *

[ECO "A00"]

1. g3 g6 2. Bg2 c5 3. Nf3 Bg7 4. d4 Nf6 *

[ECO "E60"]

1. d4 g6 2. c4 Nf6 3. f3 c5 4. d5 Bg7 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. g3 c5 4. d5 Bg7 *

[ECO "A45"]

1. d4 Nf6 2. g3 g6 3. Bg2 c5 4. d5 Bg7 *

[ECO "A41"]

1. d4 d6 2. e4 Nf6 3. f3 e5 4. d5 Be7 *

[ECO "A41"]

1. d4 d6 2. e4 Nf6 3. Nd2 e5 4. c3 Be7 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. g3 Nf6 4. Bg2 Be7 *

[ECO "C02"]

1. e4 c6 2. d4 d5 3. e5 c5 4. dxc5 e6 *

[ECO "C00"]

1. e4 e6 2. d4 d6 3. Nf3 Nf6 4. Bd3 Be7 *

[ECO "D00"]

1. d4 d5 2. Bf4 Nf6 3. Nc3 e6 4. e3 Be7 *

[ECO "D00"]

1. d4 d5 2. a3 e6 3. Nf3 Nf6 4. Nc3 Be7 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Be7 4. c3 Nf6 *

[ECO "C00"]

1. e4 e6 2. Qe2 Be7 3. b3 d5 4. Bb2 Nf6 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 Be7 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. d3 Be7 *

[ECO "A40"]

1. d4 g6 2. e4 d6 3. Bg5 Bg7 4. c3 Nf6 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. Bf4 Bg7 4. Nc3 d6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. d4 g6 4. e3 Bg7 *

[ECO "B32"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 g6 3. d4 Bg7 4. Bb2 d6 *

[ECO "D00"]

1. d4 d5 2. Bg5 g6 3. Nf3 Bg7 4. e3 Nf6 *

[ECO "A07"]

1. g3 d5 2. Nf3 g6 3. Bg2 Nf6 4. b4 Bg7 *

[ECO "A06"]

1. Nf3 d5 2. e3 g6 3. c4 Nf6 4. b4 Bg7 *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. Nc3 d5 4. Bf4 Bg7 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 g6 4. Ne5 Bg7 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nc3 e6 4. Bf4 Bd6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. Bf4 Bd6 4. Bg3 Nf6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. a3 e6 4. e3 Bd6 *

[ECO "A17"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 c5 4. g3 Nc6 *

[ECO "A06"]

1. Nf3 d5 2. b3 e6 3. Bb2 Nf6 4. g3 Bd6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bc5 3. g3 d6 4. Bg2 Nf6 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 Bc5 *

[ECO "D35"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. g3 Bb4 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. Nc3 d5 4. Ne5 Bb4 *

[ECO "A00"]

1. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nf6 4. Nf3 d5 *

[ECO "E10"]

1. c4 e6 2. d4 Nf6 3. Nf3 Ne4 4. Nfd2 Bb4 *

[ECO "A17"]

1. c4 e6 2. Nc3 Nf6 3. Nf3 Bb4 4. g3 Bxc3 *

[ECO "A40"]

1. c4 e6 2. d4 Bb4+ 3. Bd2 Bxd2+ 4. Qxd2 Nf6 *

[ECO "C43"]

1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. Bc4 Bc5 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. Bc4 Nc6 4. d3 Nf6 *

[ECO "A84"]

1. d4 f5 2. c4 e6 3. Nf3 Nf6 4. Qc2 Bb4+ *

[ECO "A40"]

1. c4 e6 2. d4 Bb4+ 3. Nd2 f5 4. g3 Nf6 *

[ECO "A01"]

1. b3 f5 2. Bb2 Nf6 3. c4 e6 4. Nf3 Be7 *

[ECO "A84"]

1. d4 f5 2. c4 Nf6 3. Nf3 e6 4. h3 Be7 *

[ECO "A84"]

1. d4 f5 2. c4 Nf6 3. Nf3 e6 4. Qc2 Be7 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nc3 Nf6 4. Bg5 Be7 *

[ECO "C00"]

1. d4 e6 2. e4 Bb4+ 3. Bd2 Bxd2+ 4. Nxd2 Ne7 *

[ECO "A40"]

1. d4 g6 2. c4 Bg7 3. Nc3 Nf6 4. Bg5 h6 *

[ECO "A48"]

1. d4 g6 2. Bf4 Nf6 3. Nf3 Nh5 4. Bd2 Bg7 *

[ECO "B10"]

1. e4 c6 2. Nf3 e6 3. d4 a6 4. c4 Nf6 *

[ECO "A00"]

1. g3 d5 2. Bg2 Nf6 3. Nf3 c6 4. d3 Bg4 *

[ECO "A50"]

1. d4 Nf6 2. c4 a6 3. Nc3 c5 4. dxc5 e6 *

[ECO "A04"]

1. Nf3 c5 2. c4 e6 3. Nc3 Nf6 4. e3 a6 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 a6 4. Nc3 c5 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. Nge2 a6 4. d4 Nf6 *

[ECO "A50"]

1. d4 Nf6 2. c4 a6 3. Nc3 c5 4. d5 d6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d5 3. Bb2 e6 4. c4 a5 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. g3 a6 4. b3 Nf6 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 a6 3. Bg5 e6 4. e4 h6 *

[ECO "E00"]

1. c4 Nf6 2. d4 e6 3. g3 b5 4. Qd3 a6 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 Ne7 4. c3 b6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. Bf4 Bf5 4. e3 e6 *

[ECO "A06"]

1. Nf3 d5 2. Nc3 Nf6 3. d4 e6 4. e3 b6 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. g3 b6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Bg5 h6 4. Bh4 b6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. g3 b5 4. Qd3 b4 *

[ECO "A84"]

1. d4 f5 2. c4 Nf6 3. e3 e6 4. Bd3 b6 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nf3 Nf6 4. Qc2 b6 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. b3 Nf6 4. e3 b6 *

[ECO "E12"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 c5 *

[ECO "A40"]

1. d4 e6 2. g3 c5 3. Nf3 Nf6 4. c3 b6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c5 3. e3 e6 4. Bd3 b6 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 c5 3. Nf3 g6 4. g3 b6 *

[ECO "E60"]

1. c4 Nf6 2. d4 g6 3. f3 c5 4. d5 b5 *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. d5 g6 4. g3 b5 *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nd2 g6 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Bg5 b5 *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Qc2 d6 *

[ECO "A45"]

1. d4 Nf6 2. g3 c5 3. d5 b5 4. Bg2 d6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nf6 3. g3 g6 4. d4 e6 *

[ECO "E61"]

1. c4 Nf6 2. Nc3 g6 3. d4 c5 4. d5 e6 *

[ECO "A43"]

1. Nf3 Nf6 2. d4 c5 3. d5 g6 4. c4 e6 *

[ECO "B13"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 *

[ECO "D03"]

1. d4 Nf6 2. Bg5 d5 3. Nf3 Ne4 4. Bh4 c5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. Bxf6 gxf6 4. dxc5 e6 *

[ECO "A20"]

1. c4 e5 2. e3 Nf6 3. Nc3 c6 4. Nf3 e4 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bf4 c5 4. c3 cxd4 *

[ECO "A81"]

1. d4 f5 2. g3 c6 3. Nf3 Nf6 4. Nc3 e6 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. Nc3 Nf6 4. Bg2 c6 *

[ECO "A40"]

1. d4 e6 2. g3 f5 3. Bg2 c5 4. Nf3 Nf6 *

[ECO "A43"]

1. d4 c5 2. d5 f5 3. Nc3 Nf6 4. g3 e5 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 Ne7 4. Nc3 c6 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. Bg5 Ne4 4. Bf4 c5 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. b3 c5 *

[ECO "A43"]

1. d4 c5 2. d5 f5 3. g3 Nf6 4. Bg2 g6 *

[ECO "B29"]

1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. Nc3 Nb4 *

[ECO "D00"]

1. Nc3 d5 2. d4 f5 3. Bf4 Nf6 4. Nf3 c6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. e3 c6 4. Nd2 g6 *

[ECO "D80"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. h4 c6 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. e3 Nf6 4. Bd3 g6 *

[ECO "B12"]

1. e4 c6 2. d4 g6 3. f4 d5 4. e5 Nh6 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 g6 4. e5 Nh6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c6 3. Qa4 g6 4. d4 d6 *

[ECO "D30"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Bg5 dxc4 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. Nf3 Nf6 4. Nc3 g6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 Nf6 4. g3 g6 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. Bg5 Nf6 4. Nbd2 h6 *

[ECO "A50"]

1. d4 Nf6 2. c4 h6 3. Nc3 c5 4. d5 d6 *

[ECO "D00"]

1. d4 d5 2. Bg5 c5 3. dxc5 h6 4. Bh4 Nf6 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. h3 d5 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Bg5 dxc4 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. Nf3 dxe4 4. Ng5 Nf6 *

[ECO "A11"]

1. c4 c6 2. f4 Nf6 3. Nc3 d5 4. e3 d4 *

[ECO "A15"]

1. c4 Nf6 2. g3 c6 3. d4 d5 4. Bg2 dxc4 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Bg5 Ne4 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. Bf4 Nf6 4. e3 Nh5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d5 4. e3 c6 *

[ECO "B20"]

1. e4 c5 2. Ne2 Nf6 3. Nbc3 d6 4. d4 cxd4 *

[ECO "D24"]

1. Nf3 Nf6 2. d4 d5 3. c4 dxc4 4. Nc3 c5 *

[ECO "B21"]

1. e4 c5 2. f4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 *

[ECO "A04"]

1. Nf3 c5 2. d4 cxd4 3. Nxd4 Nf6 4. g3 d5 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. b3 Nf6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c6 3. e3 d5 4. Qc2 e6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. g3 e6 4. Bg2 Nbd7 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c6 3. d4 e6 4. e3 d5 *

[ECO "A00"]

1. Nc3 d5 2. Nf3 Nf6 3. d4 c6 4. g3 e6 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 c6 4. b3 d5 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 c6 4. Nc3 d5 *

[ECO "A11"]

1. c4 c6 2. g3 d5 3. Bg2 Nf6 4. Qc2 e5 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Bb3 d5 *

[ECO "C25"]

1. e4 e5 2. Nc3 d6 3. Bc4 Nf6 4. d3 c6 *

[ECO "B10"]

1. e4 c6 2. d3 e5 3. Nf3 d6 4. g3 Nf6 *

[ECO "B20"]

1. e4 c5 2. d3 d6 3. Nf3 e5 4. Nc3 Nf6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 e6 4. e4 d6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 d6 4. c3 Nf6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 d6 4. g3 Nf6 *

[ECO "A40"]

1. d4 e6 2. c4 c5 3. d5 d6 4. e4 Nf6 *

[ECO "D02"]

1. d4 Nf6 2. Bf4 d5 3. Nf3 c5 4. dxc5 e6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. e3 c5 4. c3 d5 *

[ECO "D02"]

1. Nf3 Nf6 2. d4 d5 3. Bf4 e6 4. Bg5 c5 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. g3 d5 4. Bg2 e6 *

[ECO "A13"]

1. c4 e6 2. Nc3 c5 3. Nf3 Nf6 4. a3 d5 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nbd2 c5 *

[ECO "A48"]

1. Nf3 g6 2. d4 Nf6 3. c3 Bg7 4. Bg5 O-O *

[ECO "D04"]

1. d4 d5 2. Nf3 Nf6 3. e3 c5 4. c3 e6 *

[ECO "C11"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. f3 c5 *

[ECO "A05"]

1. Nf3 Nf6 2. c3 e6 3. a4 d5 4. d4 c5 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. c3 Nf6 4. c4 c5 *

[ECO "A86"]

1. d4 f5 2. c4 Nf6 3. g3 g6 4. Bg2 d6 *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. Bg5 g6 4. e3 Nh6 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. f4 d5 4. exd5 Nf6 *

[ECO "E22"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. Qb3 c5 *

[ECO "A06"]

1. Nf3 d5 2. b3 g6 3. Bb2 Nf6 4. c4 dxc4 *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. Bf4 Nh5 4. Bg5 d5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 g6 4. Nc3 Nh5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 Nh5 4. Bd2 Nf6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 Nf6 4. e3 dxe3 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 d5 3. e5 Nfd7 4. Nxd5 Nxe5 *

[ECO "B03"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Be2 dxe5 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 Nxc3 4. bxc3 d5 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 d5 3. e5 d4 4. Nce2 Ne4 *

[ECO "A45"]

1. d4 Nf6 2. e4 Nxe4 3. Nd2 d5 4. Nxe4 dxe4 *

[ECO "A04"]

1. Nf3 g6 2. d4 Bg7 3. g3 Nf6 4. Bg2 d5 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. Nf3 Nxc3 *

[ECO "A54"]

1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. d5 g6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e4 d6 4. g3 g6 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. Nc3 g6 4. Bf4 e6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. g3 d5 *

[ECO "D01"]

1. d4 d5 2. Nc3 Nf6 3. Bg5 h6 4. Bxf6 exf6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. g3 e5 4. c4 e4 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. Bd3 e5 4. Nf3 exd4 *

[ECO "C00"]

1. e4 e6 2. Nf3 d6 3. d4 Nf6 4. Nc3 d5 *

[ECO "C05"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. Bd3 dxe4 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. e3 g6 4. Nc3 Nf6 *

[ECO "C00"]

1. Nc3 e6 2. e4 d5 3. exd5 exd5 4. Nf3 Nf6 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. g3 e5 4. dxe5 dxe5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d6 3. Bxf6 exf6 4. g3 d5 *

[ECO "A15"]

1. c3 Nf6 2. c4 e5 3. e3 d5 4. cxd5 Nxd5 *

[ECO "A13"]

1. c4 e6 2. Nf3 f5 3. d3 Nf6 4. Nc3 d6 *

[ECO "A84"]

1. d4 f5 2. c4 e6 3. Nc3 d5 4. Bf4 Nf6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. Nc3 f5 4. Bf4 Nf6 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. b3 e6 4. Bb2 d5 *

[ECO "A80"]

1. d4 f5 2. b3 Nf6 3. g3 e6 4. Bg2 d5 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 *

[ECO "A04"]

1. Nf3 f5 2. b3 Nf6 3. Bb2 e6 4. g3 d5 *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. Nf3 Nf6 4. Bg5 e6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. c3 f5 4. Ne5 Nf6 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 h6 4. Nf3 e4 *

[ECO "A52"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e3 Nxe5 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bf4 Nf6 4. e3 e6 *

[ECO "A13"]

1. c4 e6 2. Nc3 f5 3. e4 fxe4 4. Nxe4 Nf6 *

[ECO "A21"]

1. c4 e5 2. Nc3 f5 3. d4 exd4 4. Qxd4 Nf6 *

[ECO "B40"]

1. e4 e6 2. Nf3 c5 3. c4 a6 4. d4 cxd4 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. Nge2 a6 4. d4 cxd4 *

[ECO "D08"]

1. d4 d5 2. c4 e5 3. e3 exd4 4. exd4 Nf6 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. a4 d6 4. g3 g6 *

[ECO "B20"]

1. e4 c5 2. Ne2 a6 3. Nbc3 d6 4. g3 e5 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. c4 e5 4. d5 a5 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. Nc3 a6 4. e4 b5 *

[ECO "D21"]

1. d4 d5 2. c4 dxc4 3. Nf3 a6 4. e4 b5 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. Nf3 b5 4. d4 e6 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. Nf3 b5 4. d4 cxd4 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. Nc3 b5 4. exd5 b4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. f3 e6 4. Nc3 b6 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bh4 c5 4. Nc3 g5 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nf3 e6 4. d4 cxd4 *

[ECO "A08"]

1. g3 c5 2. Bg2 d5 3. Nf3 f6 4. c4 d4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 f6 4. Bd3 g6 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. Nc3 dxe4 4. Nxe4 g6 *

[ECO "D00"]

1. Nc3 d5 2. d4 c6 3. Bg5 h6 4. Bf4 g5 *

[ECO "D00"]

1. d4 d5 2. Bg5 h6 3. Bh4 c5 4. dxc5 g5 *

[ECO "B15"]

1. Nc3 c6 2. e4 d5 3. d4 dxe4 4. Nxe4 h6 *

[ECO "B10"]

1. e4 c6 2. Ne2 d5 3. e5 d4 4. c3 c5 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. e3 c5 4. b4 dxe3 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 c6 4. Bd3 dxe4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. f3 e6 4. Ne2 dxe4 *

[ECO "E33"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. Nc3 e5 4. e3 exd4 *

[ECO "B10"]

1. e4 c6 2. c4 e6 3. Nf3 d5 4. cxd5 exd5 *

[ECO "A00"]

1. g3 d5 2. c4 dxc4 3. Qa4+ c6 4. Qxc4 e5 *

[ECO "C25"]

1. e4 e5 2. Nc3 c6 3. d4 d6 4. dxe5 dxe5 *

[ECO "A04"]

1. Nf3 c5 2. b3 d6 3. e4 e6 4. d4 cxd4 *

[ECO "C00"]

1. e4 e6 2. Nc3 c5 3. f4 d5 4. Nf3 d4 *

[ECO "D00"]

1. d4 d5 2. e3 e6 3. Nf3 c5 4. Bd3 c4 *

[ECO "C07"]

1. d4 e6 2. e4 d5 3. Nd2 c5 4. c3 cxd4 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. Ne5 e6 *

[ECO "A35"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. e3 e6 *

[ECO "C00"]

1. e4 e6 2. Nf3 d5 3. e5 c5 4. b4 cxb4 *

[ECO "B21"]

1. e4 c5 2. f4 e6 3. Nf3 d5 4. exd5 exd5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. b3 d5 4. exd5 exd5 *

[ECO "A04"]

1. Nf3 c5 2. Nc3 d5 3. d4 cxd4 4. Nxd4 e5 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. e3 e6 4. Nd2 f5 *

[ECO "D11"]

1. Nf3 d5 2. c4 c6 3. d4 e6 4. g3 f5 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. Nf3 g6 4. d4 exd4 *

[ECO "A00"]

1. g3 d5 2. c4 e6 3. Bg2 g6 4. Qb3 dxc4 *

[ECO "A40"]

1. d4 g6 2. e4 d6 3. c4 e5 4. dxe5 dxe5 *

[ECO "A00"]

1. b4 e5 2. b5 d5 3. Bb2 e4 4. c4 dxc4 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. Nc3 e6 4. Bg5 Nbd7 *

[ECO "A41"]

1. d4 d6 2. c4 e5 3. d5 f5 4. e4 fxe4 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. d4 f5 4. dxe5 fxe4 *

[ECO "A01"]

1. b3 e5 2. c4 d6 3. Bb2 f5 4. d4 e4 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. c3 dxc3 4. Bc4 cxb2 *

[ECO "C64"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. d3 Qe7 *

[ECO "B30"]

1. Nf3 c5 2. e4 Nc6 3. Bb5 Qc7 4. O-O Nf6 *

[ECO "A40"]

1. d4 e6 2. g3 c5 3. Nf3 Nc6 4. Bg2 Qb6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Qb6 4. Ba4 g6 *

[ECO "B20"]

1. e4 c5 2. d3 Nc6 3. f4 d5 4. exd5 Qxd5 *

[ECO "C50"]

1. e4 e5 2. Bc4 Nc6 3. Nf3 d6 4. c3 Qe7 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nc6 3. d4 Bf5 4. Bg2 Nb4 *

[ECO "C00"]

1. e4 e6 2. Qe2 Nc6 3. f4 d5 4. exd5 Qxd5 *

[ECO "C20"]

1. e4 e5 2. c3 d5 3. exd5 Qxd5 4. d4 Nc6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 d5 4. exd5 Qxd5 *

[ECO "A40"]

1. d4 Nc6 2. d5 Ne5 3. e4 e6 4. Qd4 Qf6 *

[ECO "A40"]

1. d4 Nc6 2. d5 Ne5 3. e4 e6 4. Nf3 Qf6 *

[ECO "B10"]

1. e4 c6 2. d3 d5 3. Nd2 Qc7 4. Ngf3 Nd7 *

[ECO "B12"]

1. e4 c6 2. d4 d6 3. Nc3 Qc7 4. Nf3 Nd7 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Qb3 Nc6 4. Nd5 a5 *

[ECO "A00"]

1. Nc3 c5 2. Nf3 e6 3. e4 Nc6 4. Bb5 Be7 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 Be7 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Nf3 Nxd5 4. d4 Bg4 *

[ECO "A30"]

1. c4 c5 2. e4 g6 3. Nc3 Nc6 4. d3 Bg7 *

[ECO "A30"]

1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. d3 Nc6 *

[ECO "B20"]

1. e4 c5 2. g3 Nc6 3. Bg2 g6 4. c3 Bg7 *

[ECO "B21"]

1. e4 c5 2. f4 g6 3. Nc3 Nc6 4. b3 Bg7 *

[ECO "B23"]

1. e4 c5 2. Nc3 g6 3. f4 Nc6 4. g3 Bg7 *

[ECO "B00"]

1. e4 g5 2. d4 Bg7 3. Bxg5 c5 4. Nf3 Nc6 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Be7 4. c3 Nc6 *

[ECO "B00"]

1. e4 Nc6 2. d4 d6 3. Nc3 e5 4. Nf3 Be7 *

[ECO "B00"]

1. e4 Nc6 2. Nf3 d6 3. d4 g6 4. Nc3 Bg7 *

[ECO "C15"]

1. d4 e6 2. e4 d5 3. Nc3 Bb4 4. Qd3 Nc6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Qe7 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. c4 Nc6 4. e3 Bb4+ *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. e4 Bc5 4. d3 d6 *

[ECO "A00"]

1. b4 e5 2. b5 d5 3. Bb2 Bd6 4. f4 Nd7 *

[ECO "C25"]

1. e4 e5 2. Nc3 d6 3. Nf3 Nd7 4. d4 Be7 *

[ECO "A41"]

1. d4 d6 2. Nf3 g6 3. c4 Bg7 4. g3 Nd7 *

[ECO "B06"]

1. e4 d6 2. d4 g6 3. Nc3 Bg7 4. g3 Nd7 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 g6 4. Nc3 Bg7 *

[ECO "A20"]

1. c4 e5 2. g3 g6 3. e4 Bg7 4. Bg2 Nc6 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. e3 g6 4. g3 Bg7 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Rb1 Bg7 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Qc7 *

[ECO "C53"]

1. e4 e5 2. Bc4 Nc6 3. Nf3 Bc5 4. c3 Bb6 *

[ECO "C64"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. b4 Bxb4 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bb5 Bb4+ *

[ECO "C00"]

1. e4 e6 2. Qe2 e5 3. Nc3 Nc6 4. Nf3 Bc5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nf3 Bxc3 4. dxc3 Nc6 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. d3 Bb4 4. Nf3 Bxc3+ *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Nd5 Be7 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. e3 Bg7 4. Nd2 Nc6 *

[ECO "A40"]

1. d4 e6 2. c4 Nc6 3. e3 Nf6 4. Bd2 Bb4 *

[ECO "E00"]

1. c4 Nf6 2. d4 e6 3. Qc2 Nc6 4. Nf3 Bb4+ *

[ECO "E12"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb7 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c4 Bc5 4. d3 Nf6 *

[ECO "A22"]

1. c4 Nf6 2. Nc3 e5 3. a3 Nc6 4. e4 Bc5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bc5 3. e3 Nc6 4. Nf3 Nf6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. a3 Bc5 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Bg2 Nf6 4. a3 Bc5 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. d3 Bc5 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. Be2 Bc5 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Qa4 Bc5 *

[ECO "C42"]

1. Nc3 Nf6 2. e4 e5 3. Nf3 Bb4 4. d3 Nc6 *

[ECO "A20"]

1. c4 e5 2. d3 Nc6 3. Nf3 Nf6 4. e4 Bb4+ *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. g3 Bg7 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e3 Bb4 4. Qc2 Nc6 *

[ECO "C65"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bd6 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 Be7 4. Bf4 Nc6 *

[ECO "A01"]

1. b3 Nf6 2. Bb2 Nc6 3. Nf3 e6 4. e3 Be7 *

[ECO "C65"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Qe2 Be7 *

[ECO "C50"]

1. e4 e5 2. Bc4 Nc6 3. Nf3 Be7 4. O-O Nf6 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. Qe2 Nc6 4. Nf3 Be7 *

[ECO "A20"]

1. c4 e5 2. e3 Nc6 3. a3 Be7 4. Nc3 Nf6 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. a3 Be7 *

[ECO "C64"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. Nc3 Nge7 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 Nc6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 g6 3. Nc3 Bg7 4. d4 Nc6 *

[ECO "B28"]

1. Nf3 c5 2. e4 a6 3. Be2 Nc6 4. O-O Nf6 *

[ECO "B20"]

1. e4 c5 2. Bc4 a6 3. a4 Nc6 4. Nc3 Nf6 *

[ECO "A00"]

1. b4 d5 2. Bb2 Nf6 3. a3 a5 4. b5 Nbd7 *

[ECO "C48"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 a6 *

[ECO "C65"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O a6 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 a6 3. Bf4 Nc6 4. d5 e5 *

[ECO "C55"]

1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Nf3 a6 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. c3 a6 *

[ECO "A07"]

1. g3 d5 2. Nf3 Nf6 3. Bg2 g6 4. O-O Bg7 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. d3 c5 4. e4 Nc6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Nf6 3. Bg5 Nbd7 4. Nc3 c6 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d6 3. d4 Nbd7 4. Bf4 c6 *

[ECO "B07"]

1. d4 d6 2. e4 Nf6 3. Nc3 c6 4. Be3 Nbd7 *

[ECO "B27"]

1. e4 c5 2. Nf3 d5 3. exd5 Nf6 4. Bb5+ Nbd7 *

[ECO "D01"]

1. Nc3 d5 2. d4 Nf6 3. Bg5 Nbd7 4. Qd3 c5 *

[ECO "D02"]

1. d4 d5 2. Nf3 c5 3. e3 Nf6 4. c3 Nbd7 *

[ECO "A04"]

1. Nf3 c5 2. Nc3 e6 3. e4 Nf6 4. Bb5 Nc6 *

[ECO "A43"]

1. d4 c5 2. dxc5 e6 3. Nc3 Nf6 4. e4 Nc6 *

[ECO "B21"]

1. e4 c5 2. f4 Nc6 3. Bc4 e6 4. Nc3 Nf6 *

[ECO "B04"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 c6 *

[ECO "A34"]

1. c4 c5 2. g3 Nf6 3. Nc3 Nc6 4. d3 e6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 e6 4. d4 Nc6 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. c3 Nc6 4. e3 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 c5 3. c3 Nc6 4. d4 e6 *

[ECO "B20"]

1. e4 c5 2. b3 e6 3. Bb2 Nc6 4. Nf3 Nf6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. c3 e6 4. Be2 Nf6 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. g3 Nc6 4. c3 Nf6 *

[ECO "B20"]

1. e4 c5 2. g3 Nc6 3. Bg2 e6 4. Ne2 Nf6 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. f4 Nc6 4. Nf3 Nf6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 e5 4. O-O Nf6 *

[ECO "B22"]

1. e4 c5 2. c3 e5 3. Nf3 Nc6 4. Bc4 Nf6 *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. b3 Nc6 4. Nf3 Nf6 *

[ECO "B20"]

1. e4 c5 2. b3 Nc6 3. Bb2 e5 4. Nc3 Nf6 *

[ECO "B23"]

1. e4 c5 2. Ne2 Nc6 3. Nbc3 e5 4. Nd5 Nf6 *

[ECO "B20"]

1. e4 c5 2. b3 Nc6 3. Nf3 e6 4. Bb5 Nge7 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. c3 Nge7 *

[ECO "A30"]

1. c4 c5 2. g3 Nc6 3. Bg2 e5 4. Nc3 Nge7 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 g6 3. g3 c5 4. c4 Nc6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. c3 Nf6 4. d3 g6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 g6 4. d4 Na6 *

[ECO "A41"]

1. d4 d6 2. c4 e5 3. Nf3 e4 4. Ng5 f5 *

[ECO "A30"]

1. c4 c5 2. e3 Nc6 3. d4 Nf6 4. Nc3 cxd4 *

[ECO "A04"]

1. Nf3 c5 2. Nc3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 *

[ECO "A43"]

1. d4 c5 2. Nf3 cxd4 3. Nxd4 Nf6 4. g3 Nc6 *

[ECO "A45"]

1. d4 Nf6 2. Nc3 c5 3. Nf3 cxd4 4. Qxd4 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 c5 3. Bg2 Nc6 4. d4 cxd4 *

[ECO "A35"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. g3 Nd4 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. Bf4 c5 4. dxc5 Nc6 *

[ECO "D00"]

1. d4 d5 2. h3 Nf6 3. c3 c5 4. Nf3 Nc6 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. g3 c5 4. c3 Nc6 *

[ECO "D02"]

1. Nf3 d5 2. d4 c5 3. e3 Nf6 4. Be2 Nc6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nc6 3. d3 Nf6 4. Nf3 Bb4 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. d3 Nc6 4. Nf3 d5 *

[ECO "A02"]

1. f4 c5 2. Nf3 Nf6 3. b3 d5 4. e3 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. b3 c5 4. Bg2 Nc6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nc6 4. h3 Nf6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. Qe2 Nc6 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. d3 Nc6 4. f4 d6 *

[ECO "B20"]

1. e4 c5 2. d3 Nf6 3. f4 d6 4. Nf3 Nc6 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. a4 Na6 *

[ECO "C00"]

1. e4 e6 2. d3 Nc6 3. Nf3 d5 4. e5 Nge7 *

[ECO "C62"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. Nc3 Ne7 *

[ECO "D01"]

1. Nc3 Nf6 2. d4 d5 3. Bg5 Nbd7 4. Nf3 c6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 d6 4. Bb5 Ne7 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. Bg5 d5 4. e3 Nc6 *

[ECO "A02"]

1. f4 Nf6 2. Nf3 d5 3. e3 g6 4. c4 Nc6 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 d5 4. c4 Nc6 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. g3 Nc6 4. Nc3 g6 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nc3 Nc6 4. Nf3 g6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 g6 4. b3 Nc6 *

[ECO "E61"]

1. d4 Nf6 2. c4 g6 3. Nc3 d6 4. e4 Nc6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. Nc3 e5 4. e3 Nf6 *

[ECO "B00"]

1. e4 Nc6 2. Nf3 d6 3. d4 Nf6 4. c3 g6 *

[ECO "B00"]

1. d4 Nc6 2. e4 d6 3. Nf3 Nf6 4. Nbd2 g6 *

[ECO "A04"]

1. Nf3 Nc6 2. d4 d6 3. Nc3 d5 4. e4 Nf6 *

[ECO "D07"]

1. c4 Nc6 2. d4 d5 3. e3 dxc4 4. Bxc4 Nf6 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 Nc6 3. d4 d5 4. cxd5 Nxd5 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. c3 Nc6 4. Bg5 Ne4 *

[ECO "A45"]

1. d4 Nf6 2. c3 d5 3. Bf4 Nc6 4. Nf3 Nh5 *

[ECO "B00"]

1. e4 Nc6 2. Nf3 Nf6 3. e5 Ng4 4. d4 d6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. e3 Nc6 *

[ECO "A13"]

1. c4 e6 2. d4 Nc6 3. Nf3 d5 4. Bd2 Nf6 *

[ECO "B17"]

1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Nd7 *

[ECO "A40"]

1. d4 e6 2. Nf3 b6 3. g3 Nf6 4. Bg2 Bb7 *

[ECO "D02"]

1. Nf3 Nf6 2. d4 d5 3. Nc3 e6 4. Qd3 Nc6 *

[ECO "A06"]

1. Nf3 d5 2. b3 e6 3. Bb2 Nf6 4. e3 Nc6 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. e3 Nf6 4. Bd3 d5 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. e3 d5 *

[ECO "A20"]

1. c4 e5 2. d3 Nc6 3. Nf3 Nf6 4. a3 d5 *

[ECO "A00"]

1. g3 e5 2. Bg2 Nc6 3. c3 d5 4. d4 Nf6 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Be2 d5 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 Nc6 4. a3 Nf6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 d5 4. Qa4 Nf6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. e3 Nf6 4. g3 Nc6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Bc5 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 d6 4. g3 Nf6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. Qa4 d6 *

[ECO "A41"]

1. d4 d6 2. e4 Nf6 3. f3 Nc6 4. Nc3 e6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 d6 3. g3 Nbd7 4. Bg2 e5 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. e3 Nd7 4. d4 Ngf6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. g3 Nbd7 4. Nc3 e5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. Qd3 Nbd7 4. e4 e5 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 Nbd7 4. Nh3 e5 *

[ECO "D01"]

1. d4 d5 2. Nc3 Nf6 3. Bg5 Nbd7 4. e3 e6 *

[ECO "A13"]

1. c4 e6 2. Nc3 d5 3. e3 Nf6 4. Nf3 Nbd7 *

[ECO "D31"]

1. d4 d5 2. c4 c6 3. Nc3 e6 4. e3 Bd6 *

[ECO "E01"]

1. d4 Nf6 2. g3 d5 3. Bg2 e6 4. c4 Nbd7 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nf3 e6 4. e3 Nbd7 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d5 3. Bb2 e6 4. g3 Nbd7 *

[ECO "A00"]

1. h3 e5 2. e3 d5 3. d4 Nd7 4. c4 Ngf6 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. Bg5 g6 *

[ECO "D00"]

1. d4 d5 2. c3 Nf6 3. Bg5 Nbd7 4. e3 g6 *

[ECO "A45"]

1. d4 Nf6 2. c3 d6 3. Nf3 Nbd7 4. Nbd2 d5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. e3 Nbd7 4. c4 Ne4 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d3 g6 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Nc6 *

[ECO "A31"]

1. d4 Nf6 2. c4 c5 3. Nf3 g6 4. g3 Bg7 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. a3 g6 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 h6 4. d3 Nc6 *

[ECO "E10"]

1. d4 e6 2. Nf3 Nf6 3. c4 Ne4 4. c5 Nc6 *

[ECO "B00"]

1. e4 Nc6 2. d4 e6 3. Nf3 Nf6 4. e5 Nd5 *

[ECO "B00"]

1. e4 Nc6 2. d4 e6 3. Nf3 Nf6 4. e5 Ne4 *

[ECO "E10"]

1. d4 e6 2. Nf3 Nf6 3. c4 Nc6 4. d5 exd5 *

[ECO "C28"]

1. e4 e5 2. Bc4 Nc6 3. Nc3 Nf6 4. f4 exf4 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 Nc6 3. Nc3 e5 4. d4 e4 *

[ECO "B02"]

1. e4 Nf6 2. d3 e5 3. f4 exf4 4. Bxf4 Nc6 *

[ECO "C28"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 Nc6 4. f4 Nxe4 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 d5 4. b3 Bg7 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. g3 Nd4 *

[ECO "A80"]

1. d4 f5 2. Nf3 e6 3. d5 Nf6 4. dxe6 Nc6 *

[ECO "A10"]

1. c4 f5 2. b3 Nf6 3. Bb2 Nc6 4. Nf3 e6 *

[ECO "A13"]

1. c4 e6 2. Nf3 f5 3. g3 Nc6 4. d4 Nf6 *

[ECO "A04"]

1. Nf3 f5 2. d3 Nc6 3. Nc3 Nf6 4. e4 e5 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. g3 Nb6 4. Nc3 Nc6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. g3 Nb6 4. Nf3 Nc6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 Nxc3 4. dxc3 Nc6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 e6 4. Qe2 a6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. b3 a6 4. c4 Nc6 *

[ECO "E30"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. Bg5 h6 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. Nf3 a6 4. b3 Nc6 *

[ECO "C00"]

1. e4 e6 2. g3 c5 3. Nf3 a6 4. Bg2 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. Nf3 a6 4. a4 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. g3 a6 4. a4 Nc6 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Rb1 a5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. b3 b6 4. Bd3 Nc6 *

[ECO "B20"]

1. e4 c5 2. d3 e6 3. Nf3 b5 4. Be2 Nc6 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. Nf3 Nd7 4. Nc3 c6 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. e3 e6 4. Ne5 Nd7 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 e6 4. e5 Nd7 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nf6 3. g3 d5 4. cxd5 Nxd5 *

[ECO "A00"]

1. Nc3 e5 2. Nf3 d6 3. d4 Nd7 4. e4 c6 *

[ECO "C00"]

1. e4 e6 2. d4 c6 3. Nc3 d6 4. Nf3 Nd7 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. Nc3 e5 4. e4 g6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. b3 e5 4. Nc3 g6 *

[ECO "A40"]

1. d4 e6 2. c4 c5 3. g3 cxd4 4. Qxd4 Nc6 *

[ECO "A01"]

1. b3 c5 2. Bb2 Nc6 3. e4 e5 4. Bb5 Nd4 *

[ECO "A30"]

1. c4 c5 2. g3 Nc6 3. Nf3 g6 4. Bg2 h5 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Nf3 Nxb5 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nxd4 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e4 e5 4. Nf3 exd4 *

[ECO "D00"]

1. d4 d5 2. Bg5 f6 3. Bf4 c5 4. e3 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. f4 d6 4. Bb5 g6 *

[ECO "B30"]

1. Nf3 c5 2. e4 Nc6 3. Nc3 d6 4. Bc4 g6 *

[ECO "B20"]

1. e4 c5 2. c4 d6 3. Nc3 Nc6 4. d3 g6 *

[ECO "B24"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Nge2 d6 *

[ECO "B20"]

1. e4 c5 2. g3 d6 3. Nc3 Nc6 4. d3 g6 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. g3 Nc6 4. d3 g6 *

[ECO "B20"]

1. e4 c5 2. g3 d6 3. Bg2 Nc6 4. Ne2 g6 *

[ECO "B06"]

1. e4 g6 2. d4 c6 3. f4 d5 4. e5 Na6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 c5 4. c4 Nc6 *

[ECO "B20"]

1. e4 c5 2. Ne2 d6 3. Nbc3 Nf6 4. g3 Nc6 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. e5 c5 4. Be2 Nc6 *

[ECO "D00"]

1. d4 d5 2. Bf4 c5 3. e3 Nc6 4. Nc3 cxd4 *

[ECO "A04"]

1. Nf3 c5 2. c4 d6 3. Nc3 Nc6 4. d4 cxd4 *

[ECO "B10"]

1. e4 c6 2. c4 d5 3. e5 d4 4. Nf3 Na6 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. b3 c5 4. e3 Nc6 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. b3 c5 4. Bb2 Nc6 *

[ECO "A04"]

1. Nf3 c5 2. c4 e6 3. d4 d5 4. g3 Nc6 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. e3 d5 4. Nc3 Nc6 *

[ECO "D00"]

1. d4 d5 2. e3 e6 3. Nf3 c5 4. Bd3 Nc6 *

[ECO "B22"]

1. e4 c5 2. c3 e6 3. d4 d5 4. Nd2 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. g3 d5 4. d3 Nc6 *

[ECO "B21"]

1. e4 c5 2. f4 Nc6 3. Nf3 e6 4. Be2 d5 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Bc4 Nc6 4. Nge2 e5 *

[ECO "B20"]

1. e4 c5 2. b3 Nc6 3. Bb2 e5 4. Nf3 d6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nf3 e5 4. g3 Nc6 *

[ECO "A04"]

1. Nf3 c5 2. b3 Nc6 3. Bb2 d6 4. e3 e5 *

[ECO "B41"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 Bf5 4. c4 c6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 e6 4. d4 d6 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. Nf3 Nc6 4. d3 d6 *

[ECO "A40"]

1. d4 Nc6 2. c4 e5 3. d5 Nce7 4. Nf3 d6 *

[ECO "D07"]

1. d4 d5 2. c4 Nc6 3. Nc3 dxc4 4. d5 Ne5 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. Nf3 g6 4. d4 Nc6 *

[ECO "C50"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 4. O-O g6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. g3 Nc6 4. Nf3 g6 *

[ECO "B00"]

1. e4 d6 2. f4 e5 3. d3 Nc6 4. Nf3 g6 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Nc3 d6 4. Nf3 g5 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. d5 Qb6 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 h6 4. Bd3 Nc6 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. Bc4 Nc6 4. O-O h6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nc6 3. c4 e5 4. e3 exd4 *

[ECO "B00"]

1. e4 Nc6 2. Nc3 e6 3. Nf3 d5 4. exd5 exd5 *

[ECO "A13"]

1. c4 e6 2. Nc3 Nc6 3. g3 d5 4. cxd5 exd5 *

[ECO "A41"]

1. d4 d6 2. g3 e5 3. dxe5 Nc6 4. Nc3 Nxe5 *

[ECO "C23"]

1. e4 e5 2. Bc4 d6 3. d3 Nc6 4. Nf3 Na5 *

[ECO "D02"]

1. d4 Nc6 2. Nf3 d5 3. c4 e5 4. Nxe5 Nxe5 *

[ECO "C41"]

1. e4 e5 2. Bc4 d6 3. Nf3 f5 4. d4 Nc6 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. Bg2 Nc6 4. Nc3 d6 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c3 d5 4. exd5 Qxd5 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. e3 g6 4. d4 Nd7 *

[ECO "C23"]

1. e4 e5 2. Bc4 d6 3. Nf3 h6 4. O-O Nd7 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. Bc4 Nd7 4. d4 h6 *

[ECO "B01"]

1. e4 d5 2. Nc3 dxe4 3. Nxe4 Nd7 4. Bc4 e6 *

[ECO "C22"]

1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3 g6 *

[ECO "C25"]

1. e4 Nc6 2. Nc3 e5 3. f4 exf4 4. Nf3 g5 *

[ECO "C50"]

1. e4 e5 2. Bc4 Nc6 3. Nf3 h6 4. d4 exd4 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. d4 Nxd4 4. Nxe5 Ne6 *

[ECO "C07"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 *

[ECO "A40"]

1. d4 Nc6 2. c4 e5 3. d5 Nce7 4. Nc3 Ng6 *

[ECO "A40"]

1. d4 Nc6 2. c4 e5 3. dxe5 Nxe5 4. Nc3 Nxc4 *

[ECO "A40"]

1. d4 Nc6 2. d5 Ne5 3. e4 e6 4. dxe6 fxe6 *

[ECO "D00"]

1. d4 d5 2. g3 Nf6 3. c3 Nc6 4. Nf3 Bf5 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d5 3. Bb2 Bf5 4. g3 Nc6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. g3 Nc6 4. e3 Bg4 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Bg4 4. d3 Nc6 *

[ECO "D07"]

1. d4 d5 2. c4 Nc6 3. Nf3 Bg4 4. Qa4 Nf6 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 Bf5 4. g3 Nc6 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 Bf5 4. f3 Nbd7 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. d5 d6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Nf6 3. Nbd2 Bg4 4. c3 Nbd7 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. e3 Nd7 4. Be2 Ngf6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Nf3 Bg4 4. Bb5+ Nbd7 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Bf5 4. d3 Nbd7 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 Nd7 4. d4 Ngf6 *

[ECO "D02"]

1. Nf3 d5 2. d4 a6 3. g3 Nc6 4. Bg2 Bg4 *

[ECO "A04"]

1. Nf3 b6 2. g3 c5 3. Bg2 Bb7 4. d3 Nc6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. e4 Bb7 4. f3 Nc6 *

[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. c4 Nc6 *

[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Qe2 Nc6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. Bb2 Nd7 4. c4 c6 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. e3 Bg4 4. Be2 Nd7 *

[ECO "A06"]

1. Nf3 d5 2. e3 c6 3. b3 Bg4 4. Be2 Nd7 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. b3 Bg4 4. Bb2 Nd7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nd2 Nd7 *

[ECO "A08"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Bg4 *

[ECO "A30"]

1. c4 c5 2. Nf3 d6 3. Nc3 Bg4 4. e3 Nc6 *

[ECO "B00"]

1. e4 Nc6 2. Nf3 f5 3. exf5 d5 4. Bb5 Bxf5 *

[ECO "B00"]

1. e4 Nc6 2. Bb5 d5 3. e5 Bd7 4. Bxc6 Bxc6 *

[ECO "D00"]

1. d4 d5 2. g3 Bf5 3. c3 Nc6 4. Bh3 Bxh3 *

[ECO "D38"]

1. c4 Nf6 2. d4 e6 3. Nc3 d5 4. Nf3 Bb4 *

[ECO "D02"]

1. d4 Nc6 2. Nf3 d5 3. c4 Bg4 4. Qa4 Bxf3 *

[ECO "A04"]

1. Nf3 Nc6 2. d4 d6 3. e4 Bg4 4. d5 Ne5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nc6 3. Bf4 Bg4 4. c4 e6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nc6 3. e3 Bg4 4. Be2 e6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Nc6 3. Bb2 Bg4 4. e3 e6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. b3 Nc6 4. Bg2 e5 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 d6 4. d4 Bg4 *

[ECO "C25"]

1. e4 e5 2. Nc3 Nc6 3. Bc4 d6 4. Nge2 Be6 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 d6 4. d4 Bd7 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bf5 3. e3 e6 4. Nf3 Nd7 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 Nd7 4. Nc3 g6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. b3 Nd7 4. Bb2 Bxf3 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. Ne5 Bf5 4. d4 Nd7 *

[ECO "A13"]

1. c4 e6 2. Nc3 b6 3. e4 Bb7 4. Bd3 Bb4 *

[ECO "B00"]

1. e4 b6 2. c4 Bb7 3. Nc3 e6 4. d3 Bb4 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Nc3 Bb4 4. e3 Bb7 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Nd2 b6 4. Nf3 Bb7 *

[ECO "B06"]

1. e4 g6 2. d4 b6 3. Nc3 Bg7 4. Nf3 Bb7 *

[ECO "D00"]

1. Nc3 d5 2. d4 Bf5 3. Bf4 e6 4. e3 Bd6 *

[ECO "D00"]

1. Nc3 d5 2. d4 Bf5 3. Nf3 e6 4. Bf4 Bd6 *

[ECO "D11"]

1. Nf3 d5 2. d4 c6 3. Nbd2 Nf6 4. c4 e6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 b5 3. Bg5 Bb7 4. Nbd2 a6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. d5 Nf6 4. a3 Ba6 *

[ECO "E14"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Ba6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b6 3. d4 Bb7 4. c4 Bxf3 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. Bg5 Bb7 4. Nbd2 c5 *

[ECO "A34"]

1. c4 c5 2. Nc3 b6 3. e4 Bb7 4. g3 Nf6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. Nc3 c5 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. Bf4 Bb7 4. Nbd2 c5 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. e3 Bb7 4. Nbd2 c5 *

[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nf3 Bb7 4. Nc3 d6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. a3 d5 *

[ECO "A10"]

1. c4 b6 2. Nc3 Bb7 3. d4 Nf6 4. f3 d5 *

[ECO "A06"]

1. Nf3 d5 2. b3 Nf6 3. e3 b6 4. Bb2 Bb7 *

[ECO "A07"]

1. Nf3 d5 2. g3 b6 3. Bg2 Bb7 4. b3 Nf6 *

[ECO "A10"]

1. c4 b6 2. d4 Bb7 3. d5 e6 4. a3 Nf6 *

[ECO "A00"]

1. b4 Nf6 2. Bb2 e6 3. a3 b6 4. Nf3 Bb7 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. e3 Bb7 4. b3 e6 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 b6 3. d4 Bb7 4. Qc2 e6 *

[ECO "A40"]

1. d4 e6 2. Nf3 Nf6 3. b3 b6 4. e3 Bb7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. b3 b6 4. Bb2 Bb7 *

[ECO "A47"]

1. Nf3 Nf6 2. d4 b6 3. Bg5 Bb7 4. Bxf6 exf6 *

[ECO "A49"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. c4 O-O *

[ECO "C55"]

1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Nf3 h6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. Bg2 Bb7 4. d3 e6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 b6 3. b3 g6 4. Bb2 Bb7 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. Nc3 Bb7 4. d3 g6 *

[ECO "B06"]

1. e4 g6 2. d4 b6 3. Nc3 Bb7 4. Nf3 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 g6 3. g3 b6 4. Bb2 Bb7 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. Bb2 Nf6 4. Bb5+ Bd7 *

[ECO "B52"]

1. Nf3 c5 2. e4 d6 3. Bb5+ Bd7 4. Qe2 Nf6 *

[ECO "A04"]

1. Nf3 c5 2. Nc3 Nf6 3. e4 d5 4. Bb5+ Bd7 *

[ECO "A06"]

1. Nf3 d5 2. e3 Nf6 3. b3 c5 4. Bb2 Bd7 *

[ECO "D06"]

1. c4 Nf6 2. d4 d5 3. cxd5 Bf5 4. Nc3 c6 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. Nc3 Nc6 4. Bg2 g6 *

[ECO "A15"]

1. c4 Nf6 2. g3 c6 3. b3 d5 4. Bb2 Bf5 *

[ECO "A11"]

1. c4 c6 2. Nf3 d5 3. e3 Bf5 4. Nc3 Nf6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 c6 4. Nbd2 Bf5 *

[ECO "D00"]

1. Nc3 d5 2. d4 Nf6 3. Nf3 c6 4. g3 Bf5 *

[ECO "A45"]

1. d4 Nf6 2. g3 d5 3. Bg2 c6 4. Nd2 Bf5 *

[ECO "A01"]

1. b3 d5 2. Bb2 c6 3. e3 Nf6 4. Be2 Bf5 *

[ECO "D01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 c6 4. f3 Bf5 *

[ECO "D03"]

1. Nf3 d5 2. d4 Nf6 3. Bg5 c6 4. c3 Bf5 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c6 3. g3 d5 4. d4 Bg4 *

[ECO "D04"]

1. d4 d5 2. Nf3 Nf6 3. e3 c6 4. Nbd2 Bg4 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. c4 Bg4 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. e5 Bf5 4. Nd4 Nh6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 d6 3. g3 Bf5 4. Bg2 c6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. g3 Bg4 4. Bg2 c6 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d6 3. e4 c6 4. a4 Bg4 *

[ECO "A43"]

1. d4 c5 2. d5 Nf6 3. Nc3 d6 4. Nf3 Bf5 *

[ECO "A06"]

1. Nf3 d5 2. b3 c5 3. Bb2 Nf6 4. e3 Bg4 *

[ECO "A07"]

1. Nf3 d5 2. g3 c5 3. d3 Nf6 4. Bg2 Bg4 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. e3 Nf6 4. c4 g6 *

[ECO "D00"]

1. Nc3 d5 2. d4 Bf5 3. Bg5 h6 4. Bf4 Nf6 *

[ECO "D00"]

1. d4 d5 2. Bg5 h6 3. Bh4 Nf6 4. Nc3 Bf5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 Qb6 *

[ECO "A07"]

1. g3 d5 2. Nf3 Nf6 3. Bg2 Bf5 4. d4 h6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. b3 d6 4. Nf3 Bg4 *

[ECO "D00"]

1. d4 d5 2. Bf4 Nf6 3. e3 Bf5 4. Bd3 Bxd3 *

[ECO "D04"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bf5 4. Bd3 Bxd3 *

[ECO "D04"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bg4 4. h3 Bxf3 *

[ECO "D04"]

1. Nf3 d5 2. e3 Nf6 3. d4 Bf5 4. Bd3 Be4 *

[ECO "D06"]

1. d4 d5 2. c4 Bf5 3. cxd5 Nf6 4. Nf3 Nxd5 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bf5 3. Nf3 Nf6 4. Nbd2 Nh5 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 d6 3. Nc3 Bg4 4. e3 e5 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 Bf5 4. g3 e6 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d5 3. e3 Bg4 4. d4 e6 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. e3 Nf6 4. Qa4+ Bd7 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 b6 4. Nh3 Ba6 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 b6 4. Bb5+ Bd7 *

[ECO "B22"]

1. e4 c5 2. c3 b6 3. Nf3 Bb7 4. Bc4 e6 *

[ECO "A10"]

1. c4 b6 2. b3 c5 3. Nf3 Bb7 4. Bb2 e6 *

[ECO "A40"]

1. d4 e6 2. g3 c5 3. Nf3 b6 4. Bg2 Bb7 *

[ECO "B22"]

1. e4 c5 2. c3 b6 3. d4 Bb7 4. Bd3 e6 *

[ECO "C00"]

1. e4 e6 2. d3 c5 3. Nf3 b6 4. Nbd2 Bb7 *

[ECO "A04"]

1. Nf3 c5 2. g3 g6 3. c3 b6 4. d4 Bb7 *

[ECO "C15"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Ne2 dxe4 *

[ECO "A04"]

1. Nf3 c5 2. c4 b6 3. Nc3 Bb7 4. d4 cxd4 *

[ECO "B22"]

1. e4 c5 2. c3 b6 3. d4 Bb7 4. Nd2 cxd4 *

[ECO "A34"]

1. c4 c5 2. Nc3 b6 3. e4 d6 4. g3 Bb7 *

[ECO "C00"]

1. e4 e6 2. d4 b6 3. Nf3 Bb7 4. Nbd2 d6 *

[ECO "D30"]

1. d4 e6 2. c4 d5 3. Nf3 b6 4. Nc3 Bb7 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Nc3 Bb7 4. a3 g6 *

[ECO "A40"]

1. c4 b6 2. d4 e6 3. Nf3 Bb7 4. a3 g6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. a3 f5 4. g3 Bb7 *

[ECO "B40"]

1. Nf3 c5 2. e4 e6 3. c3 d5 4. e5 Bd7 *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. Nbd2 d5 4. e3 Bg7 *

[ECO "A30"]

1. c4 c5 2. Nf3 d6 3. d4 Bd7 4. Nc3 cxd4 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. Bb5+ Bd7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. c3 f6 *

[ECO "A30"]

1. c4 c5 2. Nf3 g6 3. e4 d6 4. d4 Bg4 *

[ECO "D00"]

1. Nc3 d5 2. d4 c6 3. Bg5 h6 4. Bd2 Bf5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nd2 h6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. g4 Bg6 *

[ECO "A01"]

1. b3 d5 2. Bb2 Bg4 3. g3 c6 4. f3 Bf5 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. e3 Bg4 4. h3 Bh5 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. c3 Bg4 4. Ne5 Bh5 *

[ECO "A84"]

1. d4 f5 2. c4 e6 3. Nc3 Nf6 4. e3 Bb4 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. e5 Bg4 4. h3 Bf5 *

[ECO "D11"]

1. d4 d5 2. Nf3 c6 3. c4 dxc4 4. a4 Bg4 *

[ECO "B10"]

1. e4 c6 2. Nf3 d6 3. d4 Bg4 4. h3 Bh5 *

[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. c4 Bxb5 *

[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Nc3 Bxb5 *

[ECO "A09"]

1. Nf3 d5 2. c4 c6 3. e3 Bg4 4. cxd5 cxd5 *

[ECO "A12"]

1. Nf3 d5 2. b3 c6 3. c4 Bf5 4. Bb2 e6 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bf5 4. c4 e6 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. e5 Bg4 4. Be2 e6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. Ne5 Bh5 4. g4 f6 *

[ECO "A17"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 b6 4. e4 Bb7 *

[ECO "D02"]

1. Nf3 d5 2. d4 Bg4 3. Ne5 Bf5 4. c4 f6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. e3 Be6 4. Na3 Bd5 *

[ECO "A00"]

1. b4 d5 2. Bb2 Bg4 3. h3 Bh5 4. c4 dxc4 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bf5 3. c4 Bxb1 4. Rxb1 dxc4 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bf5 3. c3 e6 4. e3 g5 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. c4 e5 4. Ne2 Bd7 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Bf4 Qb6 4. Qc1 Bf5 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Bf4 Bg4 4. Nbd2 Qb6 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. Nf3 Bg4 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Bf5 *

[ECO "B21"]

1. e4 c5 2. d4 e6 3. c3 d5 4. exd5 Qxd5 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. d4 c5 4. c3 Qb6 *

[ECO "A40"]

1. d4 g6 2. g3 Bg7 3. Bg2 c5 4. c3 Qa5 *

[ECO "A04"]

1. Nf3 g6 2. e4 d5 3. exd5 Qxd5 4. d4 Bg7 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. h3 d5 4. exd5 Qxd5 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Ne2 d5 4. exd5 Qxd5 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. f4 Bb4+ 4. Bd2 Qh4+ *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Qb3 Bxc3 4. Qxc3 Qe7 *

[ECO "E22"]

1. c4 e6 2. Nc3 Nf6 3. d4 Bb4 4. Qb3 Qe7 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 Qe7 4. Nc3 Nf6 *

[ECO "A43"]

1. d4 Nf6 2. Nf3 c5 3. d5 b5 4. Bg5 Qa5+ *

[ECO "A29"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. g3 Bb4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. f3 e6 4. Nc3 Bb4 *

[ECO "A50"]

1. d4 Nf6 2. c4 c6 3. Nc3 Qa5 4. Bd2 e5 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 Qa5+ *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. Bxf6 Qxf6 *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. dxc5 Qa5+ 4. Nc3 e5 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. f3 c5 4. dxc5 Qa5+ *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c5 3. c3 Qb6 4. dxc5 Qxc5 *

[ECO "D00"]

1. d4 d5 2. Bg5 c6 3. Nf3 Nf6 4. c3 Qb6 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Bg5 Qb6 4. Qc1 Nf6 *

[ECO "A50"]

1. d4 Nf6 2. c4 c6 3. Bf4 d5 4. e3 Qb6 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nf3 c6 4. Bf4 Qb6 *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bd6 *

[ECO "A00"]

1. g3 d5 2. Bg2 c6 3. d3 Nf6 4. f4 Qb6 *

[ECO "B12"]

1. e4 c6 2. d4 d6 3. Be2 Nf6 4. Nc3 Qa5 *

[ECO "D04"]

1. d4 d5 2. Nf3 Nf6 3. e3 c5 4. dxc5 Qa5+ *

[ECO "D03"]

1. d4 d5 2. Nf3 Nf6 3. Bg5 Ne4 4. Bh4 Qd6 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Be2 Nf6 *

[ECO "C40"]

1. e4 e5 2. Nf3 Qe7 3. Bc4 Nf6 4. O-O d6 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. d3 d5 4. exd5 Qxd5 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nxe4 4. Qe2 Qe7 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 Qe7 4. Nf3 Nxe4 *

[ECO "B10"]

1. c4 c6 2. e4 e5 3. Nf3 Nf6 4. Nc3 Qc7 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 b6 4. exd5 Qxd5 *

[ECO "C02"]

1. d4 e6 2. e4 d5 3. e5 b6 4. h4 Qd7 *

[ECO "A40"]

1. d4 e6 2. g3 c5 3. Nf3 Qa5+ 4. Qd2 Qxd2+ *

[ECO "A80"]

1. d4 f5 2. Bg5 c6 3. e3 Qb6 4. Nd2 Qxb2 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. f4 c5 4. dxc5 Qa5+ *

[ECO "D00"]

1. d4 d5 2. Bg5 c6 3. Nf3 Qb6 4. Qc1 h6 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Bc4 c6 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. g3 c6 *

[ECO "D00"]

1. d4 d5 2. Bf4 e6 3. Nf3 c5 4. e3 Qb6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. f3 e6 4. Be3 Qb6 *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 Qxd5 4. Nf3 c5 *

[ECO "C31"]

1. e4 e5 2. f4 d5 3. exd5 exf4 4. Nf3 Qxd5 *

[ECO "C40"]

1. Nf3 f5 2. e4 e5 3. Nxe5 Qf6 4. d4 d6 *

[ECO "C40"]

1. e4 e5 2. Nf3 f5 3. Nxe5 Qf6 4. Nc4 fxe4 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 f5 4. Qe2 Qh4+ *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. Nd2 Qc7 4. Bd3 dxe4 *

[ECO "B10"]

1. e4 c6 2. c4 d6 3. d4 Qc7 4. Nc3 e5 *

[ECO "B10"]

1. c4 c6 2. e4 d6 3. d4 e5 4. Nf3 Qc7 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Nc3 Qc7 4. d4 cxd4 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. Bg5 Be7 4. e3 O-O *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e4 Nf6 4. e5 Nd5 *

[ECO "A17"]

1. c4 e6 2. Nc3 Nf6 3. b3 Be7 4. Bb2 O-O *

[ECO "A13"]

1. c4 e6 2. g3 Nf6 3. Bg2 Be7 4. Nf3 O-O *

[ECO "A04"]

1. Nf3 e6 2. b3 Nf6 3. Bb2 Be7 4. e3 O-O *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. h3 O-O *

[ECO "A02"]

1. f4 Nf6 2. Nf3 g6 3. e3 Bg7 4. d4 O-O *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. b3 O-O *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. Be2 O-O *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 Bg7 4. e4 O-O *

[ECO "A05"]

1. Nf3 Nf6 2. e3 g6 3. b3 Bg7 4. Bb2 O-O *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. b3 O-O *

[ECO "D02"]

1. d4 Nf6 2. Bf4 d5 3. Nf3 c5 4. e3 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 g6 3. f4 Bg7 4. Nf3 a6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 a5 4. g3 d6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 a5 4. g3 d5 *

[ECO "C00"]

1. d4 a6 2. e4 e6 3. Bd3 d5 4. Nc3 Bb4 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 Be7 4. Be3 b6 *

[ECO "C10"]

1. d4 e6 2. e4 d5 3. Nc3 Be7 4. Bd3 b6 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Be7 4. e5 b6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Nc3 Bb4 4. e3 Bxc3+ *

[ECO "B10"]

1. e4 c6 2. c4 g6 3. Nc3 Bg7 4. g3 e5 *

[ECO "A34"]

1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 e6 *

[ECO "B04"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Nc6 *

[ECO "B20"]

1. e4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 e6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Be2 g6 4. O-O Bg7 *

[ECO "B20"]

1. e4 c5 2. g3 g6 3. Bg2 Bg7 4. f4 e6 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. Bg2 c6 4. Nc3 Bb4 *

[ECO "A81"]

1. d4 f5 2. g3 g6 3. Bg2 Bg7 4. Nf3 c6 *

[ECO "B23"]

1. e4 c5 2. Nc3 g6 3. d4 Bg7 4. dxc5 Bxc3+ *

[ECO "B23"]

1. e4 c5 2. Nc3 g6 3. d3 Bg7 4. Nf3 Bxc3+ *

[ECO "B00"]

1. e4 g5 2. d4 Bg7 3. Bxg5 c5 4. Nc3 cxd4 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. Bg2 Be7 4. Nc3 c6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 e5 4. Ng3 Be7 *

[ECO "A40"]

1. c4 b6 2. d4 e6 3. e4 Bb7 4. Bd3 Nc6 *

[ECO "A40"]

1. d4 e6 2. c4 c5 3. d5 d6 4. e4 Be7 *

[ECO "A13"]

1. c4 e6 2. d4 c5 3. d5 d6 4. Nc3 Be7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. Nd2 g6 4. c3 Bh6 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 g6 4. h3 Bg7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. Nd2 g6 4. Bd3 Bg7 *

[ECO "B10"]

1. e4 c6 2. d3 d5 3. Nd2 g6 4. g3 Bg7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 g6 4. c4 Bg7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 g6 4. c3 Bg7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 g6 4. h3 Bg7 *

[ECO "B10"]

1. e4 c6 2. Nf3 g6 3. Bc4 Bg7 4. Nc3 d6 *

[ECO "A06"]

1. Nf3 d5 2. b3 c6 3. g3 Nf6 4. Bg2 Bf5 *

[ECO "B12"]

1. e4 c6 2. d4 g6 3. Be3 Bg7 4. Qd2 d6 *

[ECO "B10"]

1. e4 c6 2. Nf3 g6 3. d4 Bg7 4. Bf4 d6 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. Nc3 c6 4. a4 Bg7 *

[ECO "A40"]

1. d4 g6 2. Nf3 d6 3. e4 Bg7 4. Bc4 c5 *

[ECO "B00"]

1. e4 d6 2. f4 g6 3. d4 Bg7 4. Nf3 c5 *

[ECO "B22"]

1. e4 c5 2. c3 g6 3. Nf3 Bg7 4. Na3 d6 *

[ECO "A43"]

1. d4 c5 2. d5 d6 3. c4 g6 4. Nc3 Bg7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 e6 4. Nc3 Bb4 *

[ECO "A20"]

1. c4 e5 2. g3 c6 3. b3 d5 4. Bb2 Bd6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. c4 e6 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. g3 c6 4. d4 Bd6 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. e4 c5 4. Nb5 d6 *

[ECO "D00"]

1. d4 d5 2. Bf4 e6 3. Nf3 Bd6 4. Bxd6 cxd6 *

[ECO "A41"]

1. d4 d6 2. c4 e5 3. d5 Be7 4. Nc3 f5 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Be7 4. Bd3 dxe4 *

[ECO "C01"]

1. d4 e6 2. e4 d5 3. exd5 exd5 4. Nf3 Be7 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nc3 d5 4. h4 Bg7 *

[ECO "A04"]

1. Nf3 g6 2. g3 Bg7 3. Bg2 e5 4. O-O d6 *

[ECO "B06"]

1. Nf3 g6 2. e4 Bg7 3. d4 d6 4. Nc3 e6 *

[ECO "E11"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Qe7 *

[ECO "C03"]

1. d4 e6 2. e4 d5 3. Nd2 Be7 4. Ngf3 Nf6 *

[ECO "D31"]

1. d4 e6 2. c4 d5 3. Nc3 h6 4. Bf4 Bb4 *

[ECO "C30"]

1. e4 e5 2. f4 Bc5 3. Nf3 d6 4. c3 Bb6 *

[ECO "C25"]

1. e4 e5 2. Nc3 Bc5 3. Nf3 d6 4. Na4 Bb6 *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Be3 Bd6 *

[ECO "D30"]

1. d4 e6 2. c4 d5 3. cxd5 exd5 4. Qc2 Bd6 *

[ECO "C00"]

1. e4 e6 2. Nf3 d5 3. exd5 exd5 4. Be2 Bd6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nf3 Bxc3 4. bxc3 d6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 Bxd2+ 4. Nxd2 d6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 Bxd2+ 4. Qxd2 d6 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. d4 Bb4+ 4. Bd2 Bxd2+ *

[ECO "D30"]

1. d4 e6 2. c4 d5 3. g3 dxc4 4. Nc3 Bb4 *

[ECO "A40"]

1. c4 e6 2. d4 Bb4+ 3. Nd2 d5 4. Nf3 dxc4 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. Bg2 dxc4 4. Na3 Bxa3 *

[ECO "C00"]

1. e4 e6 2. Nc3 d5 3. Nf3 Bb4 4. a3 Ba5 *

[ECO "C01"]

1. d4 e6 2. e4 d5 3. exd5 exd5 4. Bd3 Bb4+ *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 e5 4. Nxe5 Bxa3 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. Bg5 f6 4. Bf4 Bd6 *

[ECO "A40"]

1. d4 Nc6 2. c4 e5 3. d5 Nb8 4. Nf3 Bb4+ *

[ECO "A00"]

1. g3 f5 2. Nf3 g6 3. Bg2 Bg7 4. O-O e5 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 a6 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. d4 exd4 4. Nf3 Bb4+ *

[ECO "B00"]

1. e4 g5 2. d4 Bg7 3. Nc3 h6 4. h4 g4 *

[ECO "E11"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 a5 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 a5 *

[ECO "A17"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 Be7 4. Nbd2 b6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. e3 Be7 4. Nf3 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. g3 e6 3. Nf3 b6 4. Bg2 Be7 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 c6 4. e4 Bc5 *

[ECO "C26"]

1. e4 e5 2. Nc3 Nf6 3. g3 Bc5 4. Bg2 c6 *

[ECO "C26"]

1. e4 e5 2. Nc3 Nf6 3. g3 c6 4. d4 Bb4 *

[ECO "C26"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 c6 4. d4 Bb4 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e3 Bb4 4. Nge2 c6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Nd2 c5 4. dxc5 Nf6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. dxc5 Bxc5 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. g3 c5 4. dxc5 Bxc5 *

[ECO "A43"]

1. d4 c5 2. dxc5 e6 3. Nc3 Bxc5 4. Ne4 Nf6 *

[ECO "E10"]

1. Nf3 Nf6 2. c4 e6 3. d4 c6 4. Bg5 Be7 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. e3 e6 4. b3 Be7 *

[ECO "D80"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bg5 Ne4 *

[ECO "A34"]

1. c4 c5 2. Nc3 Nf6 3. g3 e6 4. d3 Be7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bf4 c5 4. e3 Be7 *

[ECO "A21"]

1. c4 e5 2. Nc3 c5 3. e3 Be7 4. g3 Nf6 *

[ECO "A30"]

1. c4 c5 2. g3 e5 3. Nc3 Nf6 4. Bg2 Be7 *

[ECO "A20"]

1. c4 e5 2. g3 Bc5 3. Bg2 Ne7 4. Nc3 c6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 g6 3. g3 c6 4. b3 Bg7 *

[ECO "A34"]

1. c4 c5 2. Nc3 g6 3. Nf3 Nf6 4. e4 Bg7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c5 3. e3 g6 4. Bd3 Bg7 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 c5 4. e3 Bg7 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c3 Bg7 4. h3 Nf6 *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. Bf4 Nf6 4. e3 e6 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c3 Bg7 4. Na3 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. e3 c5 3. b3 g6 4. Bb2 Bg7 *

[ECO "A49"]

1. d4 Nf6 2. Nf3 g6 3. g3 c5 4. d5 Bg7 *

[ECO "A30"]

1. c4 c5 2. g3 g6 3. Nc3 Bg7 4. Bg2 Nh6 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. Bd3 e5 4. d5 Be7 *

[ECO "C26"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 Be7 4. f4 d6 *

[ECO "A20"]

1. c4 e5 2. a3 Nf6 3. Nc3 Be7 4. Nf3 d6 *

[ECO "A00"]

1. g3 e5 2. Nf3 d6 3. Bg2 Nf6 4. d3 Be7 *

[ECO "A04"]

1. Nf3 d6 2. g3 e5 3. Bg2 Nf6 4. O-O Be7 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. Bg5 Nf6 4. Nbd2 Be7 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. Nf3 c6 4. e3 Bd6 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. b3 Be7 *

[ECO "A06"]

1. Nf3 d5 2. b3 e6 3. Bb2 Nf6 4. e3 Be7 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. d5 d6 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d6 3. e4 g6 4. Bc4 Bg7 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 g6 3. b3 Bg7 4. Bb2 d6 *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. e3 Bg7 4. Bd3 d6 *

[ECO "B07"]

1. e4 d6 2. d4 g6 3. Nc3 Nf6 4. f3 Bg7 *

[ECO "E60"]

1. c4 Nf6 2. d4 g6 3. Nf3 d5 4. cxd5 Bg7 *

[ECO "D70"]

1. d4 Nf6 2. c4 g6 3. g3 d5 4. cxd5 Bg7 *

[ECO "D01"]

1. d4 Nf6 2. Bg5 d5 3. Nc3 g6 4. Qd2 Bg7 *

[ECO "A01"]

1. b3 d5 2. Bb2 Nf6 3. e3 g6 4. c4 Bg7 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 g6 3. Nf3 d5 4. e3 Bg7 *

[ECO "E60"]

1. d4 Nf6 2. Nf3 g6 3. c4 d5 4. e3 Bg7 *

[ECO "E70"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d5 *

[ECO "D00"]

1. Nc3 d5 2. d4 Nf6 3. Bf4 g6 4. e3 Bg7 *

[ECO "D04"]

1. d4 d5 2. Nf3 Nf6 3. e3 g6 4. c3 Bg7 *

[ECO "D04"]

1. d4 Nf6 2. Nf3 d5 3. e3 g6 4. Bd3 Bg7 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Be3 Nf6 4. Nc3 d5 *

[ECO "A17"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. c3 e6 4. Bg5 Bd6 *

[ECO "A13"]

1. c4 Nf6 2. g3 e6 3. Nf3 d5 4. Bg2 Bd6 *

[ECO "A45"]

1. d4 Nf6 2. c3 d5 3. Bf4 e6 4. e3 Bd6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Nd2 Bd6 *

[ECO "A00"]

1. Nc3 d5 2. Nf3 Nf6 3. e3 e6 4. d4 Bd6 *

[ECO "D00"]

1. d4 d5 2. Bf4 e6 3. e3 Bd6 4. Bg3 Nf6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. e3 e6 4. d4 Bd6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 e6 3. Bg2 d5 4. O-O Bd6 *

[ECO "C30"]

1. e4 e5 2. f4 Bc5 3. Nf3 d6 4. c3 Nf6 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Bc4 d6 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Nf3 e6 4. Bg2 Be7 *

[ECO "E20"]

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Nc3 d6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Nc3 e6 4. e3 Bb4 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 Nf6 4. Nf3 Bb4+ *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. d5 e5 4. Nc3 Bc5 *

[ECO "A10"]

1. c4 g6 2. e4 e5 3. d4 Nf6 4. Nf3 Bb4+ *

[ECO "A20"]

1. c4 e5 2. g3 g6 3. e4 Bg7 4. Bg2 Nh6 *

[ECO "E00"]

1. c4 Nf6 2. d4 e6 3. Bg5 Bb4+ 4. Nd2 h6 *

[ECO "E21"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 Ne4 *

[ECO "A17"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 Bb4 4. e4 Bxc3 *

[ECO "A45"]

1. d4 Nf6 2. Nc3 e6 3. Nf3 Bb4 4. a3 Bxc3+ *

[ECO "C71"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. g3 c5 4. Bg2 cxd4 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. Qb3 Ba5 4. d4 Nf6 *

[ECO "C23"]

1. e4 e5 2. Bc4 Bc5 3. c3 Nf6 4. d4 exd4 *

[ECO "C42"]

1. e4 e5 2. Nc3 Nf6 3. Nf3 Bb4 4. Bc4 Bxc3 *

[ECO "A22"]

1. c4 e5 2. Nc3 Bb4 3. g3 Nf6 4. Nf3 Bxc3 *

[ECO "A04"]

1. Nf3 f5 2. Nc3 e6 3. e3 Nf6 4. d4 Bb4 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nc3 Nf6 4. Bf4 Bb4 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. c4 e6 4. h3 Bb4+ *

[ECO "A85"]

1. d4 f5 2. c4 Nf6 3. Nc3 e6 4. e3 Be7 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nc3 Nf6 4. g3 Be7 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nf3 Nf6 4. e3 Be7 *

[ECO "B13"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nf6 *

[ECO "A80"]

1. d4 f5 2. c3 Nf6 3. Nf3 e6 4. Bg5 Be7 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. Nc3 Nf6 4. Bg2 Be7 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. Bg5 Be7 4. Nbd2 h6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Be7 4. g3 Nf6 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. c4 g6 4. Bf4 Bg7 *

[ECO "A85"]

1. c4 f5 2. d4 Nf6 3. Nc3 g6 4. h4 Bg7 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. g3 g6 4. c3 Bg7 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nc3 Bg7 4. Nf3 Nf6 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Ne4 4. Bf4 Bg7 *

[ECO "A13"]

1. c4 e6 2. Nc3 c5 3. e3 Nf6 4. d4 a6 *

[ECO "A31"]

1. c4 Nf6 2. d4 c5 3. Nf3 e6 4. d5 d6 *

[ECO "B21"]

1. e4 c5 2. f4 e6 3. Nc3 Ne7 4. Nf3 a6 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. Nf3 d6 4. g3 Nf6 *

[ECO "A41"]

1. d4 d6 2. e4 Nf6 3. Be3 a6 4. a4 g6 *

[ECO "A00"]

1. b4 e6 2. a3 d5 3. Nf3 Nf6 4. Nc3 a5 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d6 3. d4 a6 4. Be3 e6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 e6 3. g3 a6 4. Nc3 d5 *

[ECO "D35"]

1. d4 e6 2. c4 Nf6 3. Nc3 d5 4. e3 a6 *

[ECO "D00"]

1. d4 d5 2. Bf4 e6 3. e3 Nf6 4. Nf3 a6 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 a6 4. Ngf3 Nf6 *

[ECO "C23"]

1. e4 e5 2. Bc4 Bc5 3. Nc3 Nf6 4. d3 Nc6 *

[ECO "A00"]

1. b4 Nf6 2. e3 e5 3. a3 a5 4. Bb2 axb4 *

[ECO "A04"]

1. Nf3 b5 2. e3 a6 3. b3 Nf6 4. Bb2 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. c3 e6 4. e3 a6 *

[ECO "C02"]

1. d4 e6 2. e4 d5 3. e5 b6 4. Bd3 Ne7 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 Nf6 4. Nf3 b6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. g3 b5 4. Bf4 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. d3 d5 4. Bg2 e6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. e3 h6 4. Bh4 b6 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. Bf4 Nf6 4. h3 b6 *

[ECO "C28"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Nc6 4. d3 Bb4 *

[ECO "A40"]

1. d4 e6 2. g3 f5 3. Nf3 Nf6 4. Bg2 b5 *

[ECO "A40"]

1. d4 e6 2. g3 c5 3. Nf3 b6 4. d5 Nf6 *

[ECO "A57"]

1. c4 Nf6 2. d4 c5 3. d5 b5 4. Nd2 e6 *

[ECO "A50"]

1. c4 Nf6 2. d4 b6 3. Nf3 c5 4. d5 d6 *

[ECO "B15"]

1. d4 d5 2. e4 c6 3. Nc3 Nf6 4. e5 Nfd7 *

[ECO "B02"]

1. e4 Nf6 2. d3 d5 3. e5 Nfd7 4. f4 c5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. e3 h6 4. Bh4 c5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 h6 4. Bd2 c5 *

[ECO "A00"]

1. e3 e5 2. d4 e4 3. c4 Nf6 4. Nc3 c6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e3 c6 4. d4 exd4 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 d5 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. a3 c6 4. d4 exd4 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. c4 e6 4. Qc2 c5 *

[ECO "A40"]

1. d4 e6 2. g3 f5 3. Nf3 Nf6 4. c4 c5 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. c4 e6 4. Bg5 c5 *

[ECO "A84"]

1. d4 f5 2. c4 Nf6 3. Nf3 g6 4. Bf4 c5 *

[ECO "A49"]

1. d4 Nf6 2. Nf3 g6 3. g3 c5 4. Nc3 cxd4 *

[ECO "A49"]

1. Nf3 Nf6 2. d4 g6 3. g3 c5 4. Bg2 cxd4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. h4 c5 4. d5 g6 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. Bc4 Nxe4 4. d3 Nf6 *

[ECO "B29"]

1. e4 c5 2. Nf3 Nf6 3. e5 Ng4 4. h3 Nh6 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. d4 Nf6 4. Bg2 Bg4 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 e5 4. Nd5 Ne7 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 Ne7 4. Nf3 c5 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Bf4 f5 4. e3 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. e3 c6 4. Bd3 g6 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 g6 3. g3 c6 4. e4 d5 *

[ECO "A05"]

1. g3 g6 2. Nf3 Nf6 3. c4 c6 4. b3 d5 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c6 3. e3 d5 4. h3 g6 *

[ECO "A11"]

1. c4 c6 2. Nc3 Nf6 3. d4 d5 4. Qb3 g6 *

[ECO "D11"]

1. d4 d5 2. c4 c6 3. e3 Nf6 4. Nf3 g6 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. e3 Bf5 4. Qb3 Qc7 *

[ECO "D00"]

1. Nc3 d5 2. d4 Nf6 3. Bf4 c6 4. e3 g6 *

[ECO "D00"]

1. Nc3 d5 2. d4 Nf6 3. Nf3 c6 4. a3 g6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. Bxf6 gxf6 4. e3 c6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c6 3. Nc3 d6 4. e4 g6 *

[ECO "A50"]

1. c4 Nf6 2. d4 c6 3. Bf4 d6 4. Nc3 g6 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nf3 c6 4. e3 g6 *

[ECO "B06"]

1. e4 g6 2. d4 c6 3. Nd2 d6 4. Ngf3 Nf6 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c4 Nf6 4. Nc3 d6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. g3 g6 4. b3 d6 *

[ECO "A04"]

1. Nf3 c5 2. c4 g6 3. g3 Nf6 4. Nc3 d6 *

[ECO "E11"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Be7 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 c5 4. c3 g6 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. d3 d6 4. f4 g6 *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 g6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. Bxf6 gxf6 4. d5 d6 *

[ECO "D01"]

1. d4 d5 2. Nc3 Nf6 3. Bg5 c6 4. e3 h6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. d3 h6 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. Nc3 dxe4 4. Ng5 Nf6 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. Nc3 Nf6 4. e5 Ne4 *

[ECO "B03"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Bc4 c6 *

[ECO "B22"]

1. e4 c5 2. c3 d6 3. d4 Nf6 4. Bd3 cxd4 *

[ECO "A23"]

1. c4 e5 2. Nc3 Nf6 3. g3 c6 4. Nf3 e4 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. Bg5 Ne4 4. Bh4 c5 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. e5 dxe5 *

[ECO "D02"]

1. d4 d5 2. Nf3 c5 3. c4 dxc4 4. e4 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Nc3 d5 3. Nf3 c6 4. g3 c5 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 c5 3. e3 d5 4. d4 cxd4 *

[ECO "D02"]

1. Nf3 d5 2. d4 c5 3. e3 Nf6 4. c4 cxd4 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c6 3. Nc3 d5 4. cxd5 cxd5 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. c3 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 c6 3. c4 d5 4. cxd5 cxd5 *

[ECO "B33"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 c6 4. d4 e4 *

[ECO "D01"]

1. d4 d5 2. Bg5 Nf6 3. Nc3 c5 4. Nf3 Ne4 *

[ECO "A17"]

1. c4 e6 2. Nc3 Nf6 3. g3 d5 4. Bg2 c6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. c4 e6 *

[ECO "B10"]

1. e4 c6 2. Nc3 e6 3. Nf3 d5 4. d3 Nf6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. c3 e6 *

[ECO "A06"]

1. Nf3 d5 2. e3 c6 3. Bd3 e6 4. O-O Nf6 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. c3 Nf6 4. c4 c6 *

[ECO "A20"]

1. c4 e5 2. e3 Nf6 3. a3 c6 4. Nc3 d5 *

[ECO "A50"]

1. d4 Nf6 2. c4 c6 3. d5 e5 4. Nc3 d6 *

[ECO "B12"]

1. e4 c6 2. d4 d6 3. Bd3 e5 4. c3 Nf6 *

[ECO "C43"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. dxe5 d5 *

[ECO "A04"]

1. Nf3 c5 2. b3 Nf6 3. Bb2 d6 4. c4 e5 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. g3 Nf6 4. Bg2 e5 *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 *

[ECO "A41"]

1. d4 d6 2. Nf3 c5 3. d5 e5 4. e4 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d6 3. Bxf6 exf6 4. c4 c5 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Bc4 e6 4. O-O Nf6 *

[ECO "A40"]

1. d4 e6 2. c4 c5 3. e3 Nf6 4. Nf3 d6 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. Bb2 e6 4. Nc3 Nf6 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. Nf3 d6 4. g3 Nf6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 d6 4. Be2 Nf6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. c3 d5 4. exd5 exd5 *

[ECO "E00"]

1. c4 Nf6 2. d4 e6 3. Bg5 c5 4. d5 d6 *

[ECO "D00"]

1. d4 d5 2. Bg5 Nf6 3. Nd2 c5 4. dxc5 e6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. c3 d5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. g3 e6 4. Bg5 c5 *

[ECO "A06"]

1. Nf3 d5 2. e3 Nf6 3. b4 e6 4. a3 c5 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. e3 Nf6 4. b3 c5 *

[ECO "A13"]

1. c4 e6 2. d3 d5 3. Nd2 c5 4. g3 Nf6 *

[ECO "D30"]

1. c4 e6 2. d4 d5 3. e3 c5 4. Nc3 Nf6 *

[ECO "D35"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. f3 c5 *

[ECO "D35"]

1. d4 e6 2. c4 Nf6 3. Nc3 d5 4. g3 c5 *

[ECO "B22"]

1. e4 c5 2. c3 Nc6 3. d4 d5 4. exd5 Qxd5 *

[ECO "A06"]

1. Nf3 d5 2. d3 Nf6 3. Bf4 e6 4. d4 c5 *

[ECO "A40"]

1. d4 e6 2. g3 Nf6 3. Bg2 c5 4. Nf3 d5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 d5 4. Nbd2 Nf6 *

[ECO "A08"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nf6 4. d3 e6 *

[ECO "A04"]

1. Nf3 c5 2. d4 e6 3. e3 d5 4. Ne5 Nf6 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. Bg2 g6 4. Qb3 Ne7 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Ne7 4. Ngf3 g6 *

[ECO "A80"]

1. d4 f5 2. Nf3 d6 3. Nc3 Nf6 4. Bg5 d5 *

[ECO "D00"]

1. d4 d5 2. Bg5 f6 3. Bh4 Nh6 4. e3 Nf5 *

[ECO "A10"]

1. c4 f5 2. Nc3 Nf6 3. Nf3 g6 4. d3 d6 *

[ECO "A04"]

1. Nf3 f5 2. c4 Nf6 3. g3 d6 4. Bg2 g6 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. b3 d6 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nc3 d5 4. e3 Nf6 *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. Bg5 g6 4. Nf3 Nf6 *

[ECO "A07"]

1. Nf3 d5 2. g3 g6 3. c4 d4 4. d3 Nf6 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. e3 d5 4. cxd5 Nxd5 *

[ECO "A00"]

1. g3 Nf6 2. Bg2 g6 3. c4 d5 4. cxd5 Nxd5 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Ne4 4. Bh4 d5 *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 f5 4. d4 e4 *

[ECO "A40"]

1. d4 g6 2. Nc3 Nf6 3. e4 d5 4. e5 Ne4 *

[ECO "E61"]

1. d4 Nf6 2. c4 g6 3. Nc3 d6 4. Bg5 h6 *

[ECO "D03"]

1. d4 d5 2. Nf3 Nf6 3. Bg5 Ne4 4. Bf4 h6 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. g3 Nb6 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 d5 3. e5 d4 4. exf6 dxc3 *

[ECO "B02"]

1. Nc3 Nf6 2. e4 d5 3. e5 Ne4 4. Nce2 Nc5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. c4 Ne4 4. Nf3 Nxg5 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 d5 3. e5 d4 4. Nce2 Ng4 *

[ECO "A00"]

1. e3 Nf6 2. c4 e5 3. b3 d6 4. Bb2 g6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. e4 Nf6 4. Nc3 e6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d6 3. Bxf6 exf6 4. e3 g6 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. Bg2 g6 4. Qb3 Nf6 *

[ECO "A13"]

1. c4 e6 2. g3 Nf6 3. Nf3 g6 4. Nc3 d5 *

[ECO "E60"]

1. d4 Nf6 2. Nf3 g6 3. c4 e6 4. Nc3 d5 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 h6 4. Nc3 d5 *

[ECO "A41"]

1. d4 d6 2. c4 e5 3. Nf3 e4 4. Ng1 Nf6 *

[ECO "A54"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 d6 4. d4 exd4 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. g3 e5 4. Bg2 exd4 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Bc4 Qa5+ *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. Nd2 e5 4. c3 exd4 *

[ECO "A41"]

1. d4 d6 2. e4 Nf6 3. Nd2 e5 4. Ngf3 exd4 *

[ECO "B07"]

1. d4 d6 2. e4 Nf6 3. Nc3 e5 4. f4 exd4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d6 3. Bxf6 exf6 4. e3 f5 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. Bc4 e6 *

[ECO "D06"]

1. d4 d5 2. c4 Nf6 3. cxd5 Nxd5 4. Nf3 e6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 Nf6 4. Nxc4 e6 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. Nc3 Nf6 4. e3 e6 *

[ECO "A45"]

1. d4 Nf6 2. f3 e6 3. e4 d5 4. Nc3 dxe4 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. c3 Nf6 4. d4 e4 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. b4 Bg7 4. Bb2 O-O *

[ECO "C34"]

1. e4 e5 2. f4 exf4 3. Nf3 Nf6 4. Nc3 d5 *

[ECO "C29"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. d3 exf4 *

[ECO "C43"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Nxe5 d5 *

[ECO "A41"]

1. d4 d6 2. c4 e5 3. d5 f5 4. Nc3 Nf6 *

[ECO "A20"]

1. c4 e5 2. b3 f5 3. Bb2 d6 4. Nf3 Nf6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. e3 f5 4. d4 Nf6 *

[ECO "A04"]

1. Nf3 d6 2. d4 f5 3. b3 Nf6 4. e3 e6 *

[ECO "A13"]

1. c4 e6 2. Nf3 f5 3. d3 Nf6 4. Nc3 d5 *

[ECO "A07"]

1. g3 d5 2. Nf3 g6 3. c4 d4 4. Bg2 Bg7 *

[ECO "A84"]

1. c4 e6 2. d4 f5 3. g3 d5 4. Nc3 Nf6 *

[ECO "A80"]

1. d4 f5 2. Nc3 Nf6 3. Bg5 d5 4. f3 e6 *

[ECO "A80"]

1. d4 f5 2. Bg5 Nf6 3. Bxf6 exf6 4. e3 d5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. c4 f5 *

[ECO "C43"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Nxe5 Nf6 *

[ECO "A52"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 *

[ECO "C27"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 Nxe4 4. Nf3 Nxc3 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. d4 e4 4. Nc3 Nf6 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. Bg2 Nf6 4. d4 e4 *

[ECO "D26"]

1. Nf3 d5 2. d4 Nf6 3. e3 e6 4. c4 dxc4 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. Nf3 Bg7 4. Bc4 e6 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nc3 Nf6 4. Bxf6 exf6 *

[ECO "A81"]

1. d4 f5 2. g3 g6 3. h4 Nf6 4. h5 Nxh5 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. b4 Ne4 *

[ECO "B20"]

1. e4 c5 2. c4 d6 3. Nf3 a6 4. d4 cxd4 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. Nf3 c6 4. b3 a5 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 a6 4. f3 e6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. a4 e5 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. f4 d6 4. Nf3 e6 *

[ECO "D31"]

1. d4 d5 2. c4 e6 3. Nc3 dxc4 4. e4 a6 *

[ECO "C00"]

1. e4 e6 2. d4 a6 3. Nf3 d5 4. Nc3 dxe4 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. Nf3 b6 4. g3 Bg7 *

[ECO "C00"]

1. e4 e6 2. b3 d5 3. Bb2 a6 4. Qe2 d4 *

[ECO "C00"]

1. d4 a6 2. e4 e6 3. c4 d5 4. exd5 exd5 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. g3 b5 4. e3 a6 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. f4 a6 4. g3 b5 *

[ECO "A40"]

1. c4 e6 2. d4 b6 3. a3 d5 4. Nf3 dxc4 *

[ECO "A40"]

1. c4 e6 2. d4 b6 3. a3 g6 4. e4 c5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. a3 c5 4. d5 exd5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 b6 4. Nc3 g6 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. Bf4 dxc4 4. e3 b5 *

[ECO "D11"]

1. Nf3 d5 2. d4 c6 3. c4 dxc4 4. g3 b5 *

[ECO "D21"]

1. d4 d5 2. c4 dxc4 3. Nf3 b5 4. a4 c6 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 b6 4. Nf3 c5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 e6 4. Bd3 b6 *

[ECO "A40"]

1. d4 e6 2. c4 c5 3. d5 exd5 4. cxd5 g6 *

[ECO "A00"]

1. g3 e5 2. Nf3 e4 3. Nd4 c5 4. Nb3 c4 *

[ECO "A04"]

1. Nf3 c5 2. c4 f5 3. d4 cxd4 4. Nxd4 g6 *

[ECO "B21"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Bc4 cxb2 *

[ECO "B12"]

1. e4 c6 2. d4 g6 3. g3 d5 4. Nc3 dxe4 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 Nf6 4. Nf3 Bd6 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 g6 4. h3 dxe4 *

[ECO "A07"]

1. Nf3 d5 2. g3 g6 3. c4 c6 4. Qa4 d4 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c3 d6 4. d4 cxd4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 g6 4. Bd3 h5 *

[ECO "B20"]

1. e4 c5 2. b4 cxb4 3. a3 bxa3 4. Bxa3 d6 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 h6 4. e5 e6 *

[ECO "C00"]

1. e4 e6 2. Nf3 h6 3. d4 c5 4. d5 d6 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. d4 c6 4. Bf4 dxc4 *

[ECO "D11"]

1. d4 d5 2. c4 c6 3. Nf3 dxc4 4. a4 e6 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. Bg2 dxc4 4. Qa4+ c6 *

[ECO "A04"]

1. Nf3 e6 2. d4 f5 3. Bg5 Nf6 4. Nbd2 Be7 *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nc3 c6 *

[ECO "A20"]

1. c4 e5 2. g3 c6 3. b3 d5 4. Bb2 d4 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. Nc3 dxc4 4. a4 e5 *

[ECO "A21"]

1. c4 e5 2. Nc3 c6 3. Nf3 d6 4. d4 exd4 *

[ECO "B10"]

1. c4 c6 2. e4 e5 3. d4 d6 4. Nc3 exd4 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. e3 c5 4. Nc3 d4 *

[ECO "C00"]

1. d4 e6 2. e4 d5 3. Bd3 c5 4. c3 dxe4 *

[ECO "C00"]

1. e4 e6 2. Nc3 d5 3. g3 d4 4. Nce2 c5 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e4 c5 4. d5 e6 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. e5 c5 4. d4 e6 *

[ECO "C00"]

1. e4 e6 2. d4 b6 3. Nf3 d5 4. e5 Ne7 *

[ECO "B40"]

1. Nf3 c5 2. e4 e6 3. b4 cxb4 4. d4 d5 *

[ECO "D30"]

1. c4 e6 2. d4 d5 3. e3 c5 4. Nc3 cxd4 *

[ECO "D30"]

1. d4 e6 2. c4 d5 3. e3 c5 4. Nf3 cxd4 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d4 d5 4. Nbd2 c4 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. g3 cxd4 4. Nxd4 d5 *

[ECO "B22"]

1. e4 c5 2. c3 e6 3. d4 cxd4 4. cxd4 d5 *

[ECO "B20"]

1. e4 c5 2. Ne2 e6 3. d4 d5 4. exd5 exd5 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. Nge2 d5 4. exd5 exd5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 d5 4. exd5 exd5 *

[ECO "A45"]

1. d4 Nf6 2. Nc3 d5 3. Nf3 g6 4. Bf4 c6 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nc3 d5 4. g3 c6 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. h4 h6 4. Bf4 d6 *

[ECO "A40"]

1. d4 g6 2. e4 e6 3. Nf3 d5 4. exd5 exd5 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 g6 4. d3 e5 *

[ECO "C01"]

1. d4 e6 2. e4 d5 3. exd5 Qxd5 4. c4 Qd8 *

[ECO "C21"]

1. e4 e5 2. c3 d5 3. d4 exd4 4. e5 dxc3 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. Nf3 f5 4. g3 e4 *

[ECO "A10"]

1. c4 f5 2. b3 e5 3. Bb2 d6 4. d4 exd4 *

[ECO "D11"]

1. Nf3 d5 2. d4 c6 3. c4 Nf6 4. Qc2 dxc4 *

[ECO "C37"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 *

[ECO "A04"]

1. Nf3 f5 2. e4 fxe4 3. Ng5 e5 4. d3 e3 *

[ECO "D00"]

1. d4 d5 2. g3 Bf5 3. c3 Nc6 4. Qb3 Rb8 *

[ECO "B24"]

1. e4 c5 2. Nc3 Nc6 3. g3 Rb8 4. Bg2 b5 *

[ECO "B24"]

1. e4 c5 2. g3 Nc6 3. Nc3 Rb8 4. f4 g6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 Qe7 4. e4 Nc6 *

[ECO "A43"]

1. d4 c5 2. dxc5 Qa5+ 3. Nc3 Nf6 4. Nf3 Nc6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. c3 Qa5 4. g3 Nf6 *

[ECO "B22"]

1. e4 c5 2. c3 Qa5 3. g3 Nc6 4. Bg2 Nf6 *

[ECO "B22"]

1. e4 c5 2. c3 Qa5 3. g3 Nc6 4. Na3 Nf6 *

[ECO "C36"]

1. e4 e5 2. f4 d5 3. exd5 exf4 4. Nf3 Nf6 *

[ECO "D07"]

1. d4 d5 2. c4 Nc6 3. cxd5 Qxd5 4. Nf3 Nf6 *

[ECO "A15"]

1. c4 Nf6 2. g3 d5 3. cxd5 Qxd5 4. Nf3 Nc6 *

[ECO "C40"]

1. e4 e5 2. Nf3 Qe7 3. Bc4 Nf6 4. O-O Nc6 *

[ECO "A04"]

1. Nf3 c5 2. c4 e6 3. e4 Nc6 4. Nc3 Qb6 *

[ECO "A30"]

1. c4 c5 2. g3 e6 3. Bg2 Nc6 4. Nf3 Qb6 *

[ECO "A04"]

1. Nf3 c5 2. g3 Nc6 3. d4 e6 4. Bg2 Qa5+ *

[ECO "B22"]

1. e4 c5 2. c3 Qa5 3. Nf3 Nc6 4. Na3 e6 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c3 Qa5 4. Na3 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 Qb6 4. Nd5 Qa5 *

[ECO "B32"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qa5+ *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. Nf3 f5 4. d4 e4 *

[ECO "B22"]

1. e4 c5 2. c3 Qa5 3. Nf3 Nc6 4. d4 cxd4 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Ba4 Qa5 *

[ECO "D00"]

1. d4 d5 2. Bf4 c5 3. e3 Nc6 4. c3 Qb6 *

[ECO "B51"]

1. Nf3 c5 2. e4 d6 3. Bb5+ Nc6 4. c3 Qb6 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. O-O Qb6 *

[ECO "B30"]

1. Nf3 c5 2. e4 Nc6 3. Bb5 d5 4. exd5 Qxd5 *

[ECO "B20"]

1. e4 c5 2. b3 Nc6 3. Bb2 d5 4. exd5 Qxd5 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 Qa5 4. Nf4 Nc6 *

[ECO "B00"]

1. e4 d5 2. exd5 Qxd5 3. d4 Nc6 4. Nc3 Qxd4 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Bc4 Nc6 *

[ECO "E15"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 *

[ECO "C57"]

1. e4 e5 2. Nf3 Nf6 3. Bc4 Nc6 4. Ng5 d5 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. g3 Nc6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 d6 4. d4 Qe7 *

[ECO "B00"]

1. e4 Nc6 2. d4 d5 3. exd5 Qxd5 4. Nf3 e5 *

[ECO "A06"]

1. Nf3 d5 2. b3 c5 3. e3 Nc6 4. Bb5 Qc7 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. e4 e6 4. Nc3 Qc7 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 e5 4. c3 Qc7 *

[ECO "C70"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Bd6 *

[ECO "B20"]

1. e4 c5 2. Bc4 e6 3. Qe2 Nc6 4. c3 Be7 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 e6 4. O-O Be7 *

[ECO "B20"]

1. e4 c5 2. b3 Nc6 3. Nf3 e5 4. Bc4 Be7 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 Nc6 4. c3 Nf6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. c3 e5 4. Bc4 Be7 *

[ECO "B27"]

1. c4 g6 2. e4 c5 3. Nf3 Bh6 4. Nc3 Nc6 *

[ECO "B31"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. e5 Bg7 *

[ECO "B31"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. c3 Bg7 *

[ECO "B31"]

1. Nf3 c5 2. e4 Nc6 3. Bb5 g6 4. Qe2 Bg7 *

[ECO "A30"]

1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nh3 Nc6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. Nc3 g6 4. a3 Bg7 *

[ECO "A30"]

1. c4 c5 2. g3 g6 3. Nc3 Bg7 4. a3 Nc6 *

[ECO "A30"]

1. c4 c5 2. Nf3 g6 3. Nc3 Nc6 4. d4 Bg7 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Be3 c5 4. Nc3 Nc6 *

[ECO "C70"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 b5 *

[ECO "B20"]

1. e4 c5 2. d3 Nc6 3. Nf3 g6 4. c3 Bg7 *

[ECO "B21"]

1. e4 c5 2. f4 g6 3. Nf3 Bg7 4. Be2 Nc6 *

[ECO "A41"]

1. d4 d6 2. c4 e5 3. d5 Be7 4. Nc3 Na6 *

[ECO "C00"]

1. e4 e6 2. Nc3 Nc6 3. Nf3 Bb4 4. Ne2 d5 *

[ECO "A40"]

1. d4 e6 2. Nf3 Nc6 3. e4 d5 4. e5 Bb4+ *

[ECO "A21"]

1. c4 e5 2. Nc3 Bc5 3. Nf3 Nc6 4. g3 d6 *

[ECO "C25"]

1. e4 e5 2. Nc3 Nc6 3. g3 Bc5 4. Bg2 d6 *

[ECO "C25"]

1. e4 e5 2. Nc3 Nc6 3. g3 Bc5 4. d3 d6 *

[ECO "C00"]

1. e4 e6 2. Nc3 Nc6 3. d4 Bb4 4. Nf3 d6 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. e4 d6 4. d4 Nc6 *

[ECO "A20"]

1. c4 e5 2. Nf3 Nc6 3. d4 d5 4. dxe5 d4 *

[ECO "D00"]

1. d4 d5 2. Bf4 e6 3. e3 Bd6 4. Nf3 Nd7 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. c3 d6 4. Bg5 Nd7 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nf3 d6 4. h3 Nd7 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. d3 Bc5 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Bg2 g6 4. b3 Bg7 *

[ECO "A20"]

1. c4 e5 2. b3 Nc6 3. Bb2 g6 4. g3 Bg7 *

[ECO "A04"]

1. Nf3 g6 2. g3 Bg7 3. Bg2 e5 4. c4 Nc6 *

[ECO "A20"]

1. c4 e5 2. a3 Nc6 3. d3 g6 4. g3 Bg7 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 g6 4. Nf3 Bg7 *

[ECO "A04"]

1. Nf3 Nc6 2. g3 e5 3. d3 g6 4. Bg2 Bg7 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. Qa4+ Bd7 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Bg2 h5 4. h4 Bc5 *

[ECO "C25"]

1. e4 e5 2. Nc3 Nc6 3. g3 h5 4. Nf3 Bc5 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bd6 4. O-O h6 *

[ECO "C00"]

1. e4 e6 2. Nf3 Nc6 3. Nc3 Bb4 4. a3 Bxc3 *

[ECO "A00"]

1. Nc3 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 *

[ECO "A00"]

1. a3 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qa4 Bc5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Bc5 4. e3 Nc6 *

[ECO "C00"]

1. d4 e6 2. e4 Nc6 3. Nc3 Bb4 4. d5 exd5 *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Bc5 4. Nxe5 Bxf2+ *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. g3 Bxc3 4. bxc3 Nc6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Nf3 Qxd5 4. Nc3 Qa5 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Nd5 Ba5 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bb4 4. c3 Ba5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Qb3 Nc6 4. Nd5 Bd6 *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Bb4 4. Nd5 Bd6 *

[ECO "C00"]

1. e4 e6 2. Qe2 e5 3. Nf3 Nc6 4. g3 Be7 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. d4 exd4 *

[ECO "B00"]

1. e4 g5 2. d4 Bg7 3. Bc4 Nc6 4. Ne2 g4 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Bg5 Bb4+ 4. Nd2 Nc6 *

[ECO "B00"]

1. e4 Nc6 2. Nc3 e6 3. d4 Bb4 4. Nf3 Nf6 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 Nc6 4. Bf4 Bb4+ *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 g6 4. e5 Bg7 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Bb5 Bc5 *

[ECO "C28"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 Nc6 4. f4 Bc5 *

[ECO "A20"]

1. c4 e5 2. b3 Nf6 3. e3 Nc6 4. Nc3 Bc5 *

[ECO "A20"]

1. c4 e5 2. Qc2 Nc6 3. Nc3 Nf6 4. Nf3 Bc5 *

[ECO "C20"]

1. e4 e5 2. b3 Nc6 3. Nf3 Bc5 4. Nc3 Nf6 *

[ECO "C25"]

1. e4 e5 2. Nc3 Nc6 3. Bd3 Nf6 4. Nf3 Bc5 *

[ECO "A00"]

1. g3 e5 2. Bg2 Nf6 3. d3 Bc5 4. Nf3 Nc6 *

[ECO "A00"]

1. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nf6 4. g3 Nc6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. g3 Bb4 4. e4 Nc6 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. e3 Bb4 4. Bd3 Nf6 *

[ECO "A42"]

1. d4 g6 2. c4 Bg7 3. e4 d6 4. Nc3 e5 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. d3 Bb4+ *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. a3 Bd6 *

[ECO "E10"]

1. c4 e6 2. d4 Nf6 3. Nf3 Nc6 4. g3 Be7 *

[ECO "C00"]

1. e4 e6 2. Qe2 Nc6 3. Nf3 Nf6 4. Nc3 Be7 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Bg5 Be7 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. a3 Be7 *

[ECO "A29"]

1. c4 e5 2. Nc3 Nc6 3. g3 Nf6 4. Nf3 Be7 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. d4 Be7 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. Be2 Be7 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bc5 3. g3 Nc6 4. Bg2 Nge7 *

[ECO "E12"]

1. Nf3 Nf6 2. c4 e6 3. d4 b6 4. Bf4 Bb4+ *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bd6 4. O-O Nge7 *

[ECO "E60"]

1. c4 g6 2. d4 Nf6 3. f3 Nc6 4. Nc3 Bg7 *

[ECO "E60"]

1. c4 Nf6 2. d4 g6 3. g3 Bg7 4. Bg2 Nc6 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. d5 Bg7 4. Nc3 Na6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. d4 Na6 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. a4 Nc6 4. Nf3 Nf6 *

[ECO "A02"]

1. f4 Nf6 2. Nf3 d5 3. e3 Nc6 4. Nc3 a6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Nc6 3. Bb2 Nf6 4. e3 a6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 Nc6 3. Nc3 d5 4. e3 a6 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 a6 4. Nf3 Nc6 *

[ECO "E30"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 c5 *

[ECO "B00"]

1. e4 Nc6 2. Nf3 d6 3. Nc3 a6 4. d4 Nf6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 a5 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. a3 a5 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. a3 a6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. d3 Nc6 4. Bg2 d5 *

[ECO "B00"]

1. e4 Nc6 2. Bb5 d5 3. Bxc6+ bxc6 4. e5 Nh6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. c3 b6 4. Bg5 Nc6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. d3 Nc6 4. g3 e6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Nc3 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. d3 Nc6 4. Bg2 e6 *

[ECO "A07"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bg4 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. e3 Be7 *

[ECO "E15"]

1. d4 Nf6 2. Nf3 b6 3. g3 e6 4. c4 Na6 *

[ECO "A01"]

1. b3 b6 2. Bb2 Nf6 3. Nf3 Nc6 4. Nc3 g6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. d3 c5 4. Nc3 Nc6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c5 3. e3 b6 4. Bd3 Nc6 *

[ECO "D01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 Nbd7 4. e3 c6 *

[ECO "D01"]

1. d4 Nf6 2. Bg5 d5 3. Nc3 Nbd7 4. f3 c6 *

[ECO "A15"]

1. c4 Nf6 2. g3 c6 3. Bg2 d5 4. Nf3 Nbd7 *

[ECO "D11"]

1. d4 d5 2. c4 c6 3. e3 Nf6 4. Nf3 Nbd7 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. Bf4 c6 4. Nbd2 Nbd7 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. f3 Nbd7 *

[ECO "B13"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Nf3 Nf6 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. g3 Nbd7 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. h3 Nbd7 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. a4 Nbd7 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. Bb2 Nf6 4. Bb5+ Nbd7 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 d6 3. d4 Nbd7 4. Nc3 c5 *

[ECO "B40"]

1. Nf3 e6 2. e4 c5 3. g3 Nc6 4. Bb5 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. Nd2 c5 4. e3 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bc4 Nf6 4. d3 e6 *

[ECO "B20"]

1. e4 c5 2. Bc4 e6 3. Qe2 Nc6 4. c3 Nf6 *

[ECO "B20"]

1. e4 c5 2. c4 Nc6 3. Nc3 e6 4. d3 Nf6 *

[ECO "C64"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. c3 Nf6 *

[ECO "A30"]

1. c4 c5 2. g3 Nf6 3. Bg2 e6 4. e4 Nc6 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 Nf6 4. d3 e6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. e3 e6 4. Be2 Nc6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c5 3. g3 e6 4. Bh3 Nc6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Qc2 c5 4. e3 Nc6 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. c3 Nc6 4. Bf4 Nf6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. b3 c5 4. e3 Nc6 *

[ECO "B20"]

1. e4 c5 2. h4 Nc6 3. Nc3 Nf6 4. Nf3 e6 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. b3 Nc6 4. Nf3 Nf6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. Bd3 Nc6 *

[ECO "A54"]

1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 Nbd7 *

[ECO "C00"]

1. e4 e6 2. d3 c5 3. Nf3 Nc6 4. Be2 Nf6 *

[ECO "B40"]

1. e4 e6 2. Nf3 c5 3. Be2 Nc6 4. O-O Nf6 *

[ECO "A04"]

1. Nf3 c5 2. b3 Nc6 3. Bb2 e6 4. e3 Nf6 *

[ECO "A04"]

1. Nf3 c5 2. g3 e6 3. Bg2 Nf6 4. O-O Nc6 *

[ECO "B20"]

1. e4 c5 2. a4 Nc6 3. Nc3 Nf6 4. Nf3 e6 *

[ECO "A35"]

1. c4 Nf6 2. Nf3 c5 3. Nc3 Nc6 4. Nd5 e6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Nf6 4. Qe2 e5 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 c5 3. e3 Nc6 4. Bb5 e5 *

[ECO "B20"]

1. e4 c5 2. b3 e5 3. Bb2 Nc6 4. Bc4 Nf6 *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. Qe3 Nc6 4. Bc4 Nf6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. c4 a6 4. Nc3 Nc6 *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. Qf3 Nc6 4. Bc4 Nf6 *

[ECO "A30"]

1. c4 c5 2. e4 e5 3. Nc3 Nf6 4. g3 Nc6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. a3 c5 4. g3 Nc6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Be2 Nf6 4. Nc3 e5 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. d3 Nc6 4. Nf3 e5 *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. Nf3 Nc6 4. d3 Nf6 *

[ECO "A30"]

1. c4 c5 2. Nf3 e6 3. e4 Nc6 4. Be2 Nge7 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. e4 e6 4. f4 Nge7 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 e6 4. h3 Nge7 *

[ECO "B40"]

1. e4 e6 2. Nf3 c5 3. Qe2 Nc6 4. Nc3 Nge7 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. Nf3 Nc6 4. g3 g6 *

[ECO "B20"]

1. e4 c5 2. Na3 Nc6 3. Bb5 g6 4. c3 Nf6 *

[ECO "B20"]

1. e4 c5 2. Na3 Nc6 3. Bb5 Nf6 4. d3 g6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 c5 3. e3 Nc6 4. Bb5 g6 *

[ECO "B06"]

1. e4 g6 2. Nc3 c5 3. Nf3 Nc6 4. Bc4 Nf6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nf6 3. g3 Nc6 4. d3 g6 *

[ECO "A34"]

1. c4 c5 2. Nc3 g6 3. a3 Nc6 4. Rb1 Nf6 *

[ECO "B20"]

1. e4 c5 2. b3 Nc6 3. Nf3 Nf6 4. Nc3 g6 *

[ECO "A04"]

1. Nf3 c5 2. Nc3 Nf6 3. e4 Nc6 4. g3 g6 *

[ECO "A00"]

1. g3 Nf6 2. Bg2 c5 3. e4 Nc6 4. Nc3 g6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 Nf6 4. g3 g6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. f4 Nc6 4. Nf3 g6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 c5 3. b3 Nc6 4. Bb2 g6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 c5 3. Bg2 Nc6 4. O-O g6 *

[ECO "E61"]

1. d4 Nf6 2. c4 g6 3. Nc3 c5 4. dxc5 Na6 *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. e3 g6 4. dxc5 Na6 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. f3 c5 4. dxc5 Na6 *

[ECO "A36"]

1. c4 c5 2. g3 Nc6 3. Nc3 Nf6 4. Bg2 h6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c5 3. e3 Nc6 4. d4 cxd4 *

[ECO "B21"]

1. d4 c5 2. e4 cxd4 3. Qxd4 Nc6 4. Qd1 Nf6 *

[ECO "B30"]

1. Nf3 c5 2. e4 Nc6 3. Bb5 Nf6 4. e5 Ng4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. h4 c5 4. dxc5 Nc6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 c5 4. dxc5 Nc6 *

[ECO "B20"]

1. e4 c5 2. b3 Nc6 3. Nf3 Nf6 4. e5 Ng4 *

[ECO "B29"]

1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. g3 Nc6 *

[ECO "A06"]

1. b3 d5 2. Nf3 c5 3. e3 Nc6 4. Bb5 Nf6 *

[ECO "D03"]

1. d4 d5 2. Nf3 Nf6 3. Bg5 c5 4. dxc5 Nc6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. dxc5 Nc6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. b3 d5 4. Bb2 Nc6 *

[ECO "D00"]

1. d4 d5 2. Be3 Nf6 3. Bf4 c5 4. e3 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 c5 3. Nc3 d5 4. d4 Nc6 *

[ECO "D04"]

1. d4 Nf6 2. Nf3 d5 3. e3 c5 4. Bd3 Nc6 *

[ECO "D02"]

1. Nf3 d5 2. d4 c5 3. e3 Nf6 4. Nbd2 Nc6 *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Nc6 *

[ECO "A04"]

1. Nf3 c5 2. Nc3 Nc6 3. e4 Nf6 4. g3 d5 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. d3 Nc6 4. Be2 d5 *

[ECO "B20"]

1. e4 c5 2. d3 Nc6 3. g3 Nf6 4. Bg2 d5 *

[ECO "B24"]

1. e4 c5 2. Nc3 Nc6 3. g3 Nf6 4. f4 d5 *

[ECO "B21"]

1. e4 c5 2. f4 Nf6 3. d3 Nc6 4. Nf3 d5 *

[ECO "B10"]

1. e4 c6 2. Nc3 d5 3. exd5 Nf6 4. dxc6 Nxc6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Nf3 c6 4. dxc6 Nxc6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Be2 c6 4. dxc6 Nxc6 *

[ECO "B51"]

1. Nf3 c5 2. e4 d6 3. Bb5+ Nc6 4. O-O Nf6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 d6 4. d4 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 c5 3. e4 Nc6 4. f4 d6 *

[ECO "A04"]

1. Nf3 c5 2. b3 Nc6 3. c4 Nf6 4. Bb2 d6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 d6 4. e3 Nc6 *

[ECO "A34"]

1. c4 c5 2. g3 Nf6 3. Nc3 Nc6 4. d3 d6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 Nf6 4. d4 Nc6 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. Bb2 Nc6 4. Nf3 Nf6 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. Bb2 Nc6 4. g3 Nf6 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. Nc3 Nc6 4. Be2 Nf6 *

[ECO "A00"]

1. g3 Nf6 2. Bg2 c5 3. e4 Nc6 4. Nc3 d6 *

[ECO "A00"]

1. g3 Nf6 2. Bg2 c5 3. e4 Nc6 4. f4 d6 *

[ECO "B18"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d5 3. g3 c6 4. Bb2 Bf5 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c6 3. b3 d6 4. d4 Na6 *

[ECO "D30"]

1. c4 e6 2. d4 d5 3. Nf3 Nc6 4. Nc3 Nge7 *

[ECO "A40"]

1. d4 e6 2. Nf3 Nc6 3. g3 d5 4. Bg2 Nge7 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. c3 Nge7 *

[ECO "A21"]

1. c4 e5 2. Nc3 Ne7 3. Nf3 Nbc6 4. e3 d5 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. g3 d6 4. Nf3 Nge7 *

[ECO "D00"]

1. d4 d5 2. Nc3 Nc6 3. Bg5 f6 4. Bh4 Nh6 *

[ECO "D00"]

1. d4 d5 2. Bg5 f6 3. Bh4 Nh6 4. f3 Nc6 *

[ECO "A80"]

1. d4 f5 2. Nf3 d6 3. c3 Nf6 4. Qb3 Nc6 *

[ECO "E60"]

1. d4 g6 2. c4 Nf6 3. f3 Nc6 4. Nc3 d5 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 d5 4. Nb3 Nc6 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 d5 4. c3 Nc6 *

[ECO "D04"]

1. Nf3 Nf6 2. d4 d5 3. e3 g6 4. Be2 Nc6 *

[ECO "A02"]

1. f4 Nf6 2. Nf3 g6 3. d3 d5 4. e3 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Nc6 4. O-O g6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. Bxf6 gxf6 4. Nc3 Nc6 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. Bc4 Nf6 4. Qe2 Nc6 *

[ECO "A40"]

1. d4 g6 2. e4 Nf6 3. f3 d6 4. Be3 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 Nc6 3. d4 d5 4. Nc3 h6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. e3 Nc6 4. Bxc4 Nf6 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. c4 c6 4. Qb3 dxc4 *

[ECO "A00"]

1. Nc3 d5 2. e4 dxe4 3. Nxe4 Nc6 4. Nf3 Nf6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Qa4+ Nc6 4. e4 Nf6 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 Nc6 3. d4 d5 4. exd5 Nxd5 *

[ECO "B00"]

1. e4 Nc6 2. Nc3 Nf6 3. g3 d5 4. exd5 Nxd5 *

[ECO "B00"]

1. e4 Nc6 2. d4 d5 3. e5 Nh6 4. Nf3 Nf5 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nh6 *

[ECO "B00"]

1. e4 Nc6 2. d4 e6 3. Nf3 d5 4. e5 Nh6 *

[ECO "A13"]

1. c4 e6 2. Nc3 d5 3. e3 Nf6 4. Nf3 Nc6 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Nc6 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. Qc2 Nc6 4. Nf3 Nf6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. Qb3 e6 *

[ECO "A50"]

1. c4 Nc6 2. d4 Nf6 3. Nf3 e6 4. a3 d5 *

[ECO "D00"]

1. d4 d5 2. Bf4 e6 3. e3 Nf6 4. Nc3 Nc6 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nc3 e6 4. Bf4 Nc6 *

[ECO "A40"]

1. d4 e6 2. h4 Nf6 3. Nc3 Nc6 4. Nf3 d5 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nc6 3. d4 Nf6 4. h3 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 e6 3. d4 Nc6 4. a3 d5 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 Nc6 4. Be3 Nf6 *

[ECO "C00"]

1. e4 e6 2. Nc3 Nc6 3. Nf3 Nf6 4. d3 d5 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 Nf6 4. g3 Nc6 *

[ECO "E00"]

1. d4 e6 2. c4 Nf6 3. g3 d5 4. Nf3 c6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Nc3 Nc6 4. Ne5 e6 *

[ECO "A20"]

1. c4 e5 2. b3 Nf6 3. Bb2 Nc6 4. Nc3 d5 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e3 Nc6 4. Nge2 d5 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e3 Nc6 4. Qc2 d5 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e3 Nc6 4. d3 d5 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nf3 d5 *

[ECO "C20"]

1. e4 e5 2. b3 Nc6 3. Nf3 Nf6 4. Nc3 d5 *

[ECO "D01"]

1. d4 d5 2. Bg5 Nf6 3. Nc3 Nc6 4. Bxf6 exf6 *

[ECO "C50"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 4. c3 Nf6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. a3 d6 *

[ECO "C55"]

1. e4 e5 2. Nf3 Nf6 3. Bc4 Nc6 4. d4 d6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. c4 e5 4. Nc3 Nc6 *

[ECO "A41"]

1. c4 d6 2. d4 e5 3. e3 Nf6 4. Nf3 Nc6 *

[ECO "C26"]

1. e4 e5 2. Nc3 Nf6 3. g3 d6 4. Bg2 Nc6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. d3 d6 *

[ECO "A40"]

1. d4 Nc6 2. Nf3 d6 3. c4 e6 4. e4 Nf6 *

[ECO "D00"]

1. d4 d5 2. Nc3 Nf6 3. Bf4 e6 4. Nb5 Na6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Na6 3. c4 e6 4. Nc3 Nf6 *

[ECO "A53"]

1. c4 Nf6 2. d4 d6 3. Nf3 Nbd7 4. e3 e5 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 c6 4. b3 Nd7 *

[ECO "B07"]

1. d4 d6 2. e4 Nf6 3. Nc3 e5 4. Nge2 Nbd7 *

[ECO "A41"]

1. d4 d6 2. e4 Nf6 3. f3 e5 4. Ne2 Nbd7 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Nc3 d6 4. e4 Nbd7 *

[ECO "D35"]

1. c4 e6 2. Nc3 Nf6 3. d4 d5 4. g3 Nbd7 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. e3 Nd7 4. b3 Ngf6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. Nc3 e6 4. e3 Nbd7 *

[ECO "A04"]

1. Nf3 e6 2. g3 d5 3. Bg2 Nd7 4. Nc3 Ngf6 *

[ECO "A07"]

1. g3 d5 2. Nf3 Nf6 3. Bg2 e6 4. O-O Nbd7 *

[ECO "C00"]

1. e4 e6 2. d4 d6 3. Nf3 Nd7 4. Nc3 Ne7 *

[ECO "C00"]

1. e4 e6 2. Nc3 d5 3. Nf3 Ne7 4. d4 Nd7 *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bg4 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 Ne7 4. Nf3 Nd7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. e3 Nbd7 4. Nbd2 g6 *

[ECO "D01"]

1. d4 d5 2. Bg5 Nf6 3. Nc3 Nbd7 4. e3 g6 *

[ECO "D03"]

1. Nf3 Nf6 2. d4 d5 3. Bg5 Nbd7 4. e3 g6 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. Bg5 h6 *

[ECO "A53"]

1. c4 Nf6 2. d4 d6 3. Nf3 Nbd7 4. Bg5 h6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. Bg5 Nbd7 4. Nc3 h6 *

[ECO "B01"]

1. e4 d5 2. Nc3 dxe4 3. Nxe4 Nd7 4. Bc4 Ngf6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Nbd7 4. c4 dxc4 *

[ECO "D25"]

1. d4 d5 2. c4 Nf6 3. Nf3 dxc4 4. e3 Nbd7 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. Bf4 Nf6 4. h3 Qb6 *

[ECO "A00"]

1. Nc3 d5 2. e4 dxe4 3. Nxe4 Nd7 4. Nf3 Ngf6 *

[ECO "D03"]

1. d4 d5 2. Nf3 Nf6 3. Bg5 Nbd7 4. e3 Ne4 *

[ECO "A28"]

1. c4 Nf6 2. Nc3 Nc6 3. Nf3 e5 4. Qc2 g6 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Rb1 Nf6 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. a3 g6 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 Nc6 4. Bg5 h6 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Bg5 h6 *

[ECO "A20"]

1. c3 e5 2. c4 Nf6 3. Nh3 Nc6 4. Nc3 h6 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Bg2 Nf6 4. Nf3 h6 *

[ECO "C00"]

1. e4 e6 2. Qe2 Nf6 3. e5 Nd5 4. Nf3 Nc6 *

[ECO "A20"]

1. c4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. d4 exd4 4. Qxd4 Nc6 *

[ECO "A20"]

1. c4 e5 2. a3 Nf6 3. d4 exd4 4. Qxd4 Nc6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 Nc6 3. e3 e5 4. d4 exd4 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. Qxd4 Nf6 4. Nc3 Nc6 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. d4 exd4 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nge7 4. Bc4 Ng6 *

[ECO "A51"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nf3 Nc6 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. g3 Nxe4 *

[ECO "C65"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d4 Nxd4 *

[ECO "B08"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 *

[ECO "C50"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Be7 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e4 Nd4 *

[ECO "C25"]

1. e4 e5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 Nd4 *

[ECO "C23"]

1. e4 e5 2. Bc4 Nc6 3. d3 Nf6 4. h3 Na5 *

[ECO "A80"]

1. d4 f5 2. c3 Nf6 3. Bf4 e6 4. e3 Nc6 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. Bf4 Nf6 4. h3 Nc6 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Nh3 Nc6 4. Bg2 e6 *

[ECO "A04"]

1. Nf3 f5 2. d3 Nc6 3. Nc3 Nf6 4. Bf4 e6 *

[ECO "A80"]

1. d4 f5 2. c3 Nf6 3. Bg5 e6 4. e3 Nc6 *

[ECO "A10"]

1. c4 f5 2. b3 e5 3. Bb2 Nc6 4. e3 Nf6 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. Nc3 Nc6 4. d3 Nf6 *

[ECO "B08"]

1. d4 d6 2. e4 g6 3. Nf3 Nf6 4. Nc3 c6 *

[ECO "A20"]

1. c4 e5 2. h3 Nc6 3. Nc3 g6 4. d3 Nge7 *

[ECO "A50"]

1. c3 Nf6 2. c4 Nc6 3. d4 e5 4. d5 Ne7 *

[ECO "A04"]

1. Nf3 f5 2. e4 fxe4 3. Ng5 Nf6 4. d3 Nc6 *

[ECO "A10"]

1. c4 f5 2. Nc3 Nf6 3. Nf3 g6 4. d3 Nc6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. Nf3 Nc6 4. c4 Nb6 *

[ECO "B20"]

1. e4 c5 2. Bc4 e6 3. Qe2 a6 4. c3 Nc6 *

[ECO "B40"]

1. e4 e6 2. Nf3 c5 3. Nc3 Nc6 4. Qe2 a6 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. Nf3 a6 4. d3 Nc6 *

[ECO "B21"]

1. e4 c5 2. f4 Nc6 3. Nf3 a6 4. c4 g6 *

[ECO "A30"]

1. c4 c5 2. g3 g6 3. Bg2 Nc6 4. Nc3 a6 *

[ECO "A34"]

1. c4 Nf6 2. Nc3 c5 3. g3 d5 4. cxd5 Nxd5 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 a6 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. c4 Nc6 4. d4 cxd4 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Qxd4 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Ba4 a6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Na5 4. O-O a6 *

[ECO "B20"]

1. e4 c5 2. b3 Nc6 3. Bb2 a6 4. Nf3 d6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. f4 Nc6 4. Nf3 a6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 a6 4. Nxc4 Nc6 *

[ECO "D22"]

1. d4 d5 2. c4 dxc4 3. Nf3 a6 4. a4 Nc6 *

[ECO "D21"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nd7 4. Qa4 a6 *

[ECO "C07"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 a6 *

[ECO "C44"]

1. e4 e5 2. d4 exd4 3. Nf3 Nc6 4. Bb5 a6 *

[ECO "A06"]

1. Nf3 d5 2. e3 Nc6 3. Bb5 a6 4. Bxc6+ bxc6 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. g3 b5 4. Bg2 Nc6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 b6 *

[ECO "B20"]

1. e4 c5 2. b4 b6 3. bxc5 bxc5 4. Nf3 Nc6 *

[ECO "B12"]

1. e4 c6 2. d4 Na6 3. Bxa6 bxa6 4. Nf3 d5 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. Nd2 e6 4. Ngf3 Nd7 *

[ECO "D11"]

1. d4 c6 2. Nf3 d5 3. c4 e6 4. g3 Nd7 *

[ECO "A10"]

1. c4 d6 2. Nc3 e5 3. d4 Nd7 4. Nf3 c6 *

[ECO "A00"]

1. g3 e5 2. c4 c6 3. d4 d6 4. Bg2 Nd7 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nc3 d6 4. f4 Nc6 *

[ECO "B12"]

1. e4 c6 2. d4 d6 3. Nc3 Nd7 4. f4 e6 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. Nc3 e5 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nd7 *

[ECO "D00"]

1. d4 d5 2. Nc3 f5 3. Bf4 c6 4. e3 Nd7 *

[ECO "B12"]

1. e4 c6 2. d4 g6 3. c4 d6 4. Nc3 Nd7 *

[ECO "A09"]

1. Nf3 d5 2. c4 c6 3. g3 dxc4 4. Bg2 Nd7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. Nd2 Nd7 4. Bd3 dxe4 *

[ECO "C00"]

1. c4 e6 2. e4 c5 3. Nc3 Nc6 4. g3 g6 *

[ECO "A34"]

1. c4 c5 2. Nc3 e6 3. e4 Nc6 4. f4 g6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. g3 g6 4. Bg2 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d5 3. d4 Nbd7 4. Bf4 c6 *

[ECO "A34"]

1. c4 c5 2. Nc3 g6 3. a3 Nc6 4. Rb1 e6 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. g3 Nc6 4. c3 g6 *

[ECO "C00"]

1. e4 e6 2. f4 c5 3. d3 Nc6 4. Nf3 g6 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. f4 Nc6 4. Nf3 g6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 e6 4. O-O g5 *

[ECO "A04"]

1. Nf3 c5 2. c4 e6 3. e4 Nc6 4. Be2 g5 *

[ECO "A30"]

1. c4 c5 2. b3 Nc6 3. Bb2 e5 4. d3 g6 *

[ECO "B40"]

1. Nf3 c5 2. e4 e6 3. Qe2 Nc6 4. g3 h5 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. Nc3 e6 4. d4 cxd4 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 g6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Qxd4 Nc6 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. g3 Nc6 4. e4 cxd4 *

[ECO "B20"]

1. e4 c5 2. b3 Nc6 3. Bb2 e5 4. f4 exf4 *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. f4 exf4 4. Nf3 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. a4 e6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 e6 4. Bb5 Na5 *

[ECO "A44"]

1. d4 c5 2. d5 e5 3. dxe6 fxe6 4. e4 Nc6 *

[ECO "A34"]

1. c4 c5 2. Nc3 e5 3. g3 Nc6 4. Bg2 f5 *

[ECO "A04"]

1. Nf3 c5 2. Nc3 Nc6 3. d4 cxd4 4. Nxd4 g6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Bd3 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 Nd4 4. d3 g6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Ba4 g6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 Nd4 4. Ne5 Nc6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 cxd4 *

[ECO "A04"]

1. Nf3 c5 2. b3 d5 3. Bb2 Nc6 4. e3 f6 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c3 d5 4. e5 Nc6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. g4 d6 *

[ECO "A10"]

1. c4 g6 2. Nc3 c5 3. a3 Nc6 4. Rb1 d6 *

[ECO "B21"]

1. e4 c5 2. f4 d6 3. Nf3 Nc6 4. Be2 g6 *

[ECO "C47"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 *

[ECO "B20"]

1. e4 c5 2. c4 d6 3. Nc3 Nc6 4. g3 h5 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. e5 c5 4. d3 Nc6 *

[ECO "A00"]

1. h3 c6 2. e4 d5 3. e5 c5 4. Nf3 Nc6 *

[ECO "D00"]

1. d4 d5 2. Bg5 c5 3. e3 cxd4 4. exd4 Nc6 *

[ECO "B20"]

1. e4 c5 2. c4 d6 3. d4 cxd4 4. Qxd4 Nc6 *

[ECO "A04"]

1. Nf3 c5 2. Nc3 Nc6 3. d4 cxd4 4. Nxd4 d6 *

[ECO "A04"]

1. Nf3 c5 2. b3 Nc6 3. Bb2 d6 4. d4 cxd4 *

[ECO "B20"]

1. e4 c5 2. b3 Nc6 3. Nf3 d6 4. d4 cxd4 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 Nd4 4. g3 d6 *

[ECO "B20"]

1. e4 c5 2. Bc4 Nc6 3. d3 e6 4. Be3 d5 *

[ECO "A13"]

1. c4 e6 2. f4 d5 3. Nf3 c5 4. b3 Nc6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. Nc3 e6 4. g3 d5 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 c5 4. Nf3 Nc6 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 *

[ECO "B20"]

1. e4 c5 2. d3 Nc6 3. g3 d5 4. Bg2 e6 *

[ECO "B21"]

1. e4 c5 2. f4 e6 3. d3 d5 4. Be2 Nc6 *

[ECO "B20"]

1. e4 c5 2. d3 Nc6 3. g3 d5 4. Nd2 e5 *

[ECO "C55"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 *

[ECO "A40"]

1. d4 g6 2. c4 Bg7 3. Nf3 d6 4. Nc3 Bg4 *

[ECO "B20"]

1. e4 c5 2. b3 Nc6 3. Bb2 e5 4. Bb5 d6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 d6 4. Nc3 e5 *

[ECO "A04"]

1. Nf3 c5 2. b3 Nc6 3. Bb2 d6 4. c4 e5 *

[ECO "B24"]

1. e4 c5 2. Nc3 Nc6 3. g3 e6 4. d3 d6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. g3 Nc6 4. Bg2 d6 *

[ECO "A04"]

1. Nf3 c5 2. Nc3 e6 3. e4 d6 4. a3 Nc6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. Bxc6 dxc6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 Bg4 4. e3 e6 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. Nf3 c6 4. Qc2 Na6 *

[ECO "A13"]

1. c4 e6 2. d4 c5 3. d5 d6 4. e4 Na6 *

[ECO "D02"]

1. d4 d5 2. Nf3 c5 3. dxc5 e6 4. Be3 Na6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. a3 g6 4. e3 Nc6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 g6 4. e3 Nc6 *

[ECO "D21"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nd7 4. e3 Nb6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. e3 Nc6 4. b4 dxe3 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 Nc6 4. Nf3 g6 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Bg2 g6 4. e3 d5 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. e4 Nc6 4. g3 g6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. b3 b6 4. Bb2 Bb7 *

[ECO "A20"]

1. c4 e5 2. b3 Nc6 3. Bb2 g6 4. g3 d6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. g3 Nc6 4. e3 g6 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. d3 d6 4. g3 g6 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. Bg2 g6 4. d4 Nc6 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. c4 e5 4. Nc3 Nc6 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 g6 4. f4 d6 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 h6 4. c3 Nc6 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. Nc3 h5 4. h4 Nc6 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. Bc4 Nb6 *

[ECO "B00"]

1. e4 Nc6 2. Nc3 e6 3. d4 d5 4. Bb5 dxe4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. f3 Qa5+ *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. Qa4+ Nc6 4. e3 e6 *

[ECO "D00"]

1. d4 d5 2. c3 Nc6 3. e3 e5 4. Bb5 e4 *

[ECO "D31"]

1. d4 d5 2. c4 e6 3. Nc3 Nc6 4. c5 e5 *

[ECO "C45"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 d5 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. cxd5 exd5 4. Qc2 Nc6 *

[ECO "A00"]

1. h3 e5 2. e3 d5 3. d4 Nc6 4. Nf3 e4 *

[ECO "C44"]

1. d4 Nc6 2. e4 e5 3. Nf3 exd4 4. Bd3 d5 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. f4 Nc6 4. Nf3 d5 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 Nc6 4. f4 exf4 *

[ECO "D07"]

1. d4 d5 2. c4 Nc6 3. e3 e5 4. dxe5 dxc4 *

[ECO "E12"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. a3 Be7 *

[ECO "D07"]

1. d4 d5 2. c4 Nc6 3. e3 dxc4 4. Bxc4 e5 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. g3 Nc6 4. d3 e5 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. c4 d4 4. d3 Nc6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. e3 Nc6 4. d3 e5 *

[ECO "A07"]

1. g3 d5 2. Nf3 Nc6 3. c4 dxc4 4. Bg2 e5 *

[ECO "B01"]

1. e4 d5 2. Nc3 d4 3. Nce2 e5 4. d3 Nc6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 d5 4. d3 dxe4 *

[ECO "C25"]

1. e4 e5 2. Nc3 d6 3. Bc4 Nc6 4. f4 exf4 *

[ECO "A41"]

1. d4 d6 2. Nf3 Nc6 3. c4 e5 4. Nc3 exd4 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. d4 exd4 4. Qxd4 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 4. O-O Be7 *

[ECO "C25"]

1. e4 e5 2. Nc3 d6 3. d4 exd4 4. Qxd4 Nc6 *

[ECO "C30"]

1. e4 e5 2. f4 d6 3. d4 exd4 4. Qxd4 Nc6 *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 d6 4. d4 Nxd4 *

[ECO "A04"]

1. Nf3 Nc6 2. d4 d6 3. c4 e6 4. d5 Ne5 *

[ECO "B00"]

1. e4 Nc6 2. d4 d5 3. Nc3 e6 4. e5 Na5 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nf3 d5 4. Nc3 Nc6 *

[ECO "D00"]

1. d4 d5 2. Bg5 f6 3. Bf4 Nc6 4. e3 e5 *

[ECO "A04"]

1. Nf3 f5 2. d3 Nc6 3. e4 e5 4. exf5 d5 *

[ECO "A00"]

1. g3 d5 2. Bg2 e5 3. d3 Nc6 4. Nf3 f5 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. d4 f5 4. dxe5 Nc6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. Bxf6 exf6 4. e3 Bd6 *

[ECO "A80"]

1. d4 f5 2. Nf3 d6 3. c3 e6 4. h4 Nc6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. d4 Nd7 4. e4 exd4 *

[ECO "C00"]

1. e4 e6 2. d4 d5 3. Nf3 dxe4 4. Ne5 Nd7 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. c4 Nd7 4. g3 dxc4 *

[ECO "C00"]

1. e4 e6 2. Nf3 d5 3. Nc3 dxe4 4. Nxe4 Nd7 *

[ECO "A00"]

1. b4 e5 2. b5 d5 3. Bb2 Nd7 4. c4 dxc4 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. c4 Nd7 4. cxd5 exd5 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Qa4+ Nd7 4. Qxc4 e5 *

[ECO "A07"]

1. Nf3 d5 2. g3 g6 3. c4 dxc4 4. Qa4+ Nd7 *

[ECO "A86"]

1. d4 f5 2. g3 Nf6 3. c4 e6 4. Nf3 Bb4+ *

[ECO "A20"]

1. c4 e5 2. g3 g6 3. d4 Nc6 4. Nf3 exd4 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 g6 4. d4 Nxd4 *

[ECO "A20"]

1. c4 e5 2. g3 g6 3. d4 Nc6 4. d5 Nd4 *

[ECO "A21"]

1. c4 e5 2. Nc3 g6 3. d4 Nc6 4. dxe5 Nxe5 *

[ECO "C25"]

1. e4 e5 2. Nc3 Nc6 3. g3 h5 4. Nf3 h4 *

[ECO "B00"]

1. e4 Nc6 2. d4 e5 3. d5 Nce7 4. Bd3 Ng6 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. g4 fxg4 4. Nc3 Nc6 *

[ECO "A84"]

1. c4 e6 2. d4 f5 3. e4 fxe4 4. f3 Nc6 *

[ECO "C63"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. d4 fxe4 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. d5 exd5 4. Qxd5 Nc6 *

[ECO "D25"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 a6 *

[ECO "A04"]

1. Nf3 f5 2. d3 Nc6 3. e4 e5 4. d4 fxe4 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 f5 4. d4 exd4 *

[ECO "B00"]

1. e4 b6 2. d4 Bb7 3. Bd3 Nf6 4. Nd2 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 b6 3. Bb2 Bb7 4. g3 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. d3 Nc6 4. Bg2 Bb7 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 Bf5 4. c4 Nc6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Bf5 3. c4 Nf6 4. Qb3 Nc6 *

[ECO "D02"]

1. Nf3 Nf6 2. d4 d5 3. Nc3 Nc6 4. Bf4 Bf5 *

[ECO "A45"]

1. d4 Nf6 2. c3 d5 3. Bf4 Nc6 4. e3 Bf5 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. c3 Nc6 4. Bf4 Bf5 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bf5 3. Nf3 Nc6 4. e3 Nf6 *

[ECO "D02"]

1. d4 d5 2. Bf4 Nf6 3. Nf3 Nc6 4. Nbd2 Bf5 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nc3 Nc6 4. Bf4 Bf5 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nf3 Bf5 4. Bf4 Nc6 *

[ECO "A07"]

1. g3 d5 2. Nf3 Nf6 3. Bg2 Bf5 4. b3 Nc6 *

[ECO "A06"]

1. Nf3 d5 2. e3 Nf6 3. Nc3 Bg4 4. d4 Nc6 *

[ECO "D04"]

1. d4 d5 2. Nf3 Nf6 3. e3 Nc6 4. Be2 Bg4 *

[ECO "D04"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bg4 4. Nbd2 Nc6 *

[ECO "A07"]

1. g3 d5 2. Nf3 Bg4 3. b3 Nc6 4. Bg2 Nf6 *

[ECO "A40"]

1. d4 Nc6 2. Nf3 d6 3. c4 Nf6 4. Nc3 Bf5 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. O-O Nge7 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d6 3. d4 Bf5 4. g3 Nc6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. Nbd2 Bf5 4. e3 Nc6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. Bg5 Bg4 4. Nc3 Nc6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. e3 Nf6 4. c4 Nc6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Nc6 3. e4 Bg4 4. Be3 Nf6 *

[ECO "D04"]

1. d4 Nf6 2. Nf3 d5 3. e3 Nc6 4. Bb5 Bd7 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 Nc6 4. Bb5 Bd7 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 d6 3. d4 Nc6 4. Nc3 Bd7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. c4 Bf5 4. Nc3 Nbd7 *

[ECO "A53"]

1. c4 Nf6 2. d4 d6 3. Nf3 Bg4 4. b3 Nbd7 *

[ECO "D25"]

1. Nf3 d5 2. d4 Nf6 3. c4 dxc4 4. e3 g6 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. c4 Nd7 4. g3 Ngf6 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d6 3. e4 Bg4 4. d4 Nbd7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. Nbd2 Bg4 4. e4 Nbd7 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bf5 3. e3 Nf6 4. Bb5+ Nbd7 *

[ECO "A45"]

1. d4 Nf6 2. c3 d5 3. Bf4 Bf5 4. Qb3 Nbd7 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. Bf4 Bf5 4. h3 Nbd7 *

[ECO "D00"]

1. Nc3 d5 2. d4 Nf6 3. Nf3 Bf5 4. e3 Nbd7 *

[ECO "A06"]

1. b3 d5 2. Nf3 Nf6 3. Bb2 Bf5 4. e3 Nbd7 *

[ECO "A00"]

1. g3 d5 2. Bg2 Nf6 3. Nf3 Bf5 4. O-O Nbd7 *

[ECO "A06"]

1. b3 d5 2. Nf3 Bg4 3. e3 Nd7 4. Be2 Ngf6 *

[ECO "C45"]

1. e4 Nc6 2. d4 e5 3. Nf3 exd4 4. Nxd4 Bb4+ *

[ECO "A06"]

1. Nf3 d5 2. b3 Nf6 3. g3 Bg4 4. Bg2 Nbd7 *

[ECO "A06"]

1. b3 d5 2. Nf3 Bg4 3. Bb2 Nc6 4. e3 a6 *

[ECO "C00"]

1. e4 e6 2. Qe2 b6 3. Nf3 Ba6 4. d3 Nc6 *

[ECO "A10"]

1. c4 b6 2. Nc3 Bb7 3. e4 e5 4. Nf3 Nc6 *

[ECO "B21"]

1. e4 c5 2. f4 d6 3. Nf3 Nc6 4. Bb5 Bd7 *

[ECO "B00"]

1. e4 d6 2. Nc3 c5 3. Bb5+ Bd7 4. a4 Nc6 *

[ECO "A12"]

1. Nf3 d5 2. c4 c6 3. b3 Bf5 4. Bb2 Nd7 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. c3 Bf5 4. Bf4 Nd7 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. b3 Bf5 4. Bb2 Nd7 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bf5 4. Nc3 Nd7 *

[ECO "A20"]

1. c4 e5 2. Nf3 e4 3. Nd4 Nc6 4. Nxc6 dxc6 *

[ECO "D00"]

1. d4 d5 2. Bg5 c6 3. e3 Bf5 4. Nf3 Nd7 *

[ECO "A00"]

1. g3 d5 2. Bg2 c6 3. b3 Bg4 4. Bb2 Nd7 *

[ECO "D00"]

1. d4 d5 2. Nc3 c5 3. Bf4 Nc6 4. e3 Bf5 *

[ECO "B30"]

1. Nf3 c5 2. e4 Nc6 3. Bb5 d6 4. c4 Bg4 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c4 Bg4 4. Be2 Nc6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. e4 d6 4. d4 Bg4 *

[ECO "D00"]

1. d4 d5 2. Bg5 f6 3. Bf4 Nc6 4. Nf3 Bf5 *

[ECO "B00"]

1. e4 Nc6 2. Nf3 f5 3. exf5 d5 4. d4 Bxf5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nc6 3. g3 Bg4 4. Bg2 g6 *

[ECO "D00"]

1. Nc3 d5 2. d4 Bf5 3. Bg5 h6 4. Bf4 Nc6 *

[ECO "B00"]

1. e4 b6 2. d4 Bb7 3. Bd3 g6 4. Nf3 Bg7 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. c4 Nd7 4. Qb3 Nb6 *

[ECO "A06"]

1. Nf3 d5 2. e3 Nc6 3. Bb5 Bd7 4. Bxc6 Bxc6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bf5 3. e3 Nc6 4. g4 Bg6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nc6 3. d4 Bf5 4. Nh4 Be4 *

[ECO "B01"]

1. e4 d5 2. Nc3 dxe4 3. Nxe4 Nc6 4. Nf3 Bf5 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. Qa4+ Nc6 4. Nf3 Bg4 *

[ECO "A40"]

1. d4 Nc6 2. Nf3 d6 3. g3 Bg4 4. d5 Ne5 *

[ECO "D00"]

1. Nc3 d5 2. d4 Bf5 3. Bf4 e6 4. e3 Nc6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nc6 3. d4 Bf5 4. e3 e6 *

[ECO "D00"]

1. d4 d5 2. a3 Nc6 3. Nf3 Bf5 4. e3 e6 *

[ECO "C02"]

1. d4 e6 2. e4 d5 3. e5 c5 4. c3 Bd7 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. b3 Nc6 4. d4 e6 *

[ECO "D00"]

1. d4 d5 2. a3 Nc6 3. Nf3 Bg4 4. Nbd2 e6 *

[ECO "B00"]

1. e4 Nc6 2. d4 d5 3. e5 Bf5 4. Ne2 e6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Nc6 3. e3 Bg4 4. d4 e5 *

[ECO "A00"]

1. a3 e5 2. e3 d5 3. d4 Nc6 4. Nf3 Bg4 *

[ECO "C62"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. O-O Bg4 *

[ECO "C50"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 4. d3 Bg4 *

[ECO "A40"]

1. d4 Nc6 2. Nf3 d6 3. c4 Bg4 4. Nc3 e6 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 d6 4. Bb5 Bd7 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. Qa4+ Bd7 4. Qxc4 Nc6 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. Nc3 Bg7 4. d4 Qa5 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. c4 Nd7 4. Nc3 e5 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 Nd7 4. e3 e5 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. Bf4 e6 4. e3 Nd7 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 Nd7 4. d5 g6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bf5 3. Bg5 h6 4. Bf4 Nd7 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 Nd7 4. d5 Bxf3 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. e3 Nd7 4. h3 Bh5 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. c4 Nd7 4. e4 Bxf3 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. Bb2 Nd7 4. d4 Bxf3 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. e3 Nd7 4. h3 Bxf3 *

[ECO "D00"]

1. d4 d5 2. Bg5 c6 3. e3 h6 4. Bh4 Qb6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. Ne5 Bf5 4. d4 Nd7 *

[ECO "A07"]

1. g3 d5 2. Nf3 Bg4 3. Bg2 Nd7 4. c4 dxc4 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. c4 Nc6 4. cxd5 Qxd5 *

[ECO "D07"]

1. c4 Nc6 2. d4 d5 3. cxd5 Qxd5 4. Nf3 Bg4 *

[ECO "D00"]

1. d4 d5 2. g3 Bf5 3. c3 Qd7 4. Nf3 Nc6 *

[ECO "B00"]

1. e4 Nc6 2. d4 d5 3. e5 Bf5 4. h4 Qd7 *

[ECO "A40"]

1. c4 b6 2. d4 e6 3. g3 Bb7 4. d5 Bb4+ *

[ECO "C00"]

1. d4 e6 2. e4 b6 3. Nc3 Bb7 4. Bd3 Bb4 *

[ECO "C00"]

1. d4 e6 2. e4 b6 3. Nc3 Bb7 4. f4 Bb4 *

[ECO "C00"]

1. e4 e6 2. f4 b6 3. Nf3 Bb7 4. Nc3 Bb4 *

[ECO "A17"]

1. c4 Nf6 2. Nf3 e6 3. Nc3 Bb4 4. Qc2 c5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Bf4 Bb4+ 4. Nc3 Bb7 *

[ECO "A40"]

1. c4 e6 2. d4 b6 3. Bf4 Bb4+ 4. Nd2 Bb7 *

[ECO "B00"]

1. e4 b6 2. d4 Bb7 3. Nd2 e6 4. Ngf3 Be7 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nc3 b6 4. Be3 Bb7 *

[ECO "A04"]

1. Nf3 b6 2. g3 Bb7 3. Bg2 g6 4. O-O Bg7 *

[ECO "A06"]

1. Nf3 d5 2. e3 Bf5 3. Be2 e6 4. O-O Bd6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bf5 3. c4 e6 4. Nc3 Bb4 *

[ECO "A00"]

1. b4 d5 2. Bb2 Nf6 3. a3 a5 4. b5 Bf5 *

[ECO "D02"]

1. Nf3 d5 2. d4 a6 3. Bg5 Bg4 4. e3 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. c3 d5 3. Bf4 Bf5 4. Qb3 b6 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. c3 Bf5 4. Qb3 b6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Be2 Ba6 *

[ECO "A10"]

1. c4 b6 2. Nc3 Nf6 3. Nf3 Bb7 4. g3 Bxf3 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 b6 3. Nc3 Bb7 4. d3 Bxf3 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 b6 3. d3 Bb7 4. e4 c5 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. c4 c5 4. Nc3 Bb7 *

[ECO "B00"]

1. e4 b6 2. d4 Bb7 3. Bd3 Nf6 4. Nc3 c5 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. d4 Nf6 4. e4 d6 *

[ECO "B22"]

1. e4 c5 2. c3 b6 3. d4 Bb7 4. d5 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. Bg2 Bb7 4. O-O c5 *

[ECO "A47"]

1. Nf3 Nf6 2. d4 b6 3. Bf4 d6 4. Nc3 Bb7 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. Bf4 Bb7 4. e3 d6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 b6 3. e3 Bb7 4. Bb2 d6 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. Bg5 Bb7 4. Nbd2 d5 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 b6 3. Nf3 Bb7 4. d4 d5 *

[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Qc2 d5 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 b6 3. e3 Bb7 4. d4 d5 *

[ECO "E32"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b6 3. d3 d5 4. Bg2 Bb7 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 b6 3. d4 Bb7 4. Bg5 e6 *

[ECO "A10"]

1. c4 b6 2. e4 Bb7 3. Nc3 e6 4. a3 Nf6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. e3 Bb7 4. Be2 e6 *

[ECO "A40"]

1. c4 e6 2. d4 b6 3. Bf4 Nf6 4. Nc3 Bb7 *

[ECO "E12"]

1. d4 e6 2. c4 b6 3. Nf3 Nf6 4. Bd2 Bb7 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. Bf4 b6 4. h3 Bb7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Nbd2 b6 4. e4 Bb7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. g3 b5 4. Bf4 Bb7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. g3 b5 4. Qd3 Bb7 *

[ECO "A40"]

1. c4 e6 2. d4 b6 3. Nc3 Bb7 4. a3 Ne7 *

[ECO "A40"]

1. d4 b6 2. e4 Bb7 3. Nd2 e6 4. Ngf3 Ne7 *

[ECO "A04"]

1. Nf3 f5 2. d4 Nf6 3. g3 b6 4. Bg2 Bb7 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. b4 b6 4. Bb2 Bb7 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. e3 Bb7 4. b3 g6 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. Bf4 Bb7 4. Nbd2 g6 *

[ECO "A10"]

1. c4 b6 2. d4 Bb7 3. Bg5 h6 4. Bf4 Nf6 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. Bf4 Bb7 4. e3 Nh5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 b5 3. Bg5 Bb7 4. Nbd2 b4 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Bb5+ Bd7 4. Bc4 c6 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. Bf4 Nf6 4. Nbd2 g6 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 c5 4. Bb5+ Bd7 *

[ECO "B20"]

1. e4 c5 2. h3 d5 3. exd5 Nf6 4. Bb5+ Bd7 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. d4 Bg4 4. Bb5+ c6 *

[ECO "D06"]

1. d4 Nf6 2. c4 d5 3. e3 Bf5 4. cxd5 c6 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. e3 Nf6 4. Nd2 Bf5 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bf5 3. e3 c6 4. c3 Nf6 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nf3 c6 4. Nc3 Bf5 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. d3 Nf6 4. Nbd2 Bf5 *

[ECO "D03"]

1. d4 d5 2. Nf3 Nf6 3. Bg5 c6 4. e3 Bf5 *

[ECO "B11"]

1. e4 c6 2. Nf3 d5 3. Nc3 Bg4 4. Be2 Nf6 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. e5 Nh6 4. Nf3 Bg4 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. e5 Nh6 4. Be2 Bf5 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 Bf5 4. g3 c6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. g3 Bf5 4. Bg2 c6 *

[ECO "A50"]

1. d4 Nf6 2. c4 c6 3. Bf4 d6 4. Nf3 Bg4 *

[ECO "A00"]

1. Nc3 Nf6 2. e4 d6 3. g3 c6 4. Nf3 Bg4 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 Nf6 4. g3 Bg4 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Qc2 Bg4 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nf3 g6 4. g3 Bf5 *

[ECO "D01"]

1. d4 Nf6 2. Bg5 d5 3. Nc3 Bf5 4. Bxf6 gxf6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 Bf5 4. Be2 h5 *

[ECO "A06"]

1. Nf3 d5 2. b3 Nf6 3. Bb2 Bg4 4. Ne5 h5 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. e3 Nf6 4. h3 Bh5 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. g3 Bxf3 4. exf3 Nf6 *

[ECO "A00"]

1. Nc3 Nf6 2. Nf3 d6 3. e4 Bg4 4. h3 Bxf3 *

[ECO "B03"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. f4 Bf5 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. b3 d6 4. Nf3 Bf5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d6 4. Nd2 Bf5 *

[ECO "A45"]

1. d4 Nf6 2. Nc3 d5 3. f3 Bf5 4. g4 Be6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. e3 Be6 4. Nc3 Nf6 *

[ECO "D31"]

1. d4 e6 2. c4 d5 3. Nc3 c6 4. e4 dxe4 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. e3 Be6 4. Qc2 Nf6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bg4 3. f3 Bf5 4. Nc3 Nf6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 Bg4 4. Bb2 Bxf3 *

[ECO "A01"]

1. b3 d5 2. e3 Nf6 3. Bb2 Bg4 4. Be2 Bxe2 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. Bb2 Bxf3 4. gxf3 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. g3 d5 3. Nf3 Bg4 4. Ne5 Bh5 *

[ECO "D02"]

1. Nf3 d5 2. d3 Nf6 3. d4 Bg4 4. Ne5 Bh5 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d5 3. Bb2 Bg4 4. Ne5 Bh5 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. b3 Bg4 4. Ne5 Bf5 *

[ECO "D00"]

1. Nc3 d5 2. d4 Nf6 3. Nf3 Bg4 4. Ne5 Bf5 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Bg2 Bc5 4. Nc3 d6 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. c4 dxc4 4. Nc3 Nf6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. h3 Bf5 *

[ECO "A00"]

1. c3 d5 2. Nf3 Nf6 3. d4 Bf5 4. Bf4 Nh5 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. Bf4 Nh5 4. Bd2 Bf5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. h4 d5 4. Nd2 Bf5 *

[ECO "A45"]

1. d4 Nf6 2. Nc3 d5 3. Nf3 Bf5 4. Bg5 Ne4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. e3 Bf5 4. Bd3 Ne4 *

[ECO "D03"]

1. Nf3 d5 2. d4 Nf6 3. Bg5 Ne4 4. Bh4 Bg4 *

[ECO "C23"]

1. e4 e5 2. Bc4 d6 3. Nc3 Nf6 4. Nf3 Bg4 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. e4 Nf6 4. Bd3 e5 *

[ECO "B07"]

1. d4 d6 2. e4 g6 3. Nf3 Bg7 4. c3 Nd7 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 d6 4. Nc3 Be6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Be2 e5 4. dxe6 Bxe6 *

[ECO "C00"]

1. e4 e6 2. Qe2 d5 3. exd5 Nf6 4. dxe6 Bxe6 *

[ECO "A06"]

1. b4 d5 2. Nf3 Nf6 3. Bb2 Bf5 4. a3 e6 *

[ECO "D00"]

1. d4 d5 2. g3 Bf5 3. c4 Nf6 4. Bg2 e6 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. c4 e6 4. Nc3 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. f4 d5 3. e3 Bf5 4. Bd3 e6 *

[ECO "D00"]

1. d4 d5 2. f4 Nf6 3. g3 Bf5 4. Bg2 e6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. b3 Bf5 4. g3 e6 *

[ECO "D00"]

1. d4 d5 2. Nc3 Nf6 3. g3 Bf5 4. Bg2 e6 *

[ECO "C65"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Qe2 Bc5 *

[ECO "D02"]

1. Nf3 Nf6 2. d4 d5 3. c3 Bf5 4. h3 e6 *

[ECO "A03"]

1. f4 d5 2. g3 Nf6 3. e3 Bf5 4. Nf3 e6 *

[ECO "A06"]

1. Nf3 d5 2. d3 Nf6 3. Nbd2 Bf5 4. g3 e6 *

[ECO "D01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 Bf5 4. e3 e6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 Bg4 4. Nbd2 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Bg4 4. d4 e6 *

[ECO "A06"]

1. b3 d5 2. Nf3 Bg4 3. e3 e6 4. Be2 Nf6 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Bc4 d5 4. exd5 Bg4 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nge2 Bd7 *

[ECO "A06"]

1. Nf3 d5 2. b3 Nf6 3. e3 Bg4 4. h3 Bd7 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. Nf3 d6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. d3 Nc6 *

[ECO "D23"]

1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. Qa4+ Bd7 *

[ECO "B20"]

1. e4 c5 2. Ne2 a6 3. Nbc3 b5 4. g3 Bb7 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. g3 b5 4. Bg2 Bb7 *

[ECO "C00"]

1. e4 e6 2. d4 a6 3. Nf3 b5 4. Bd3 Bb7 *

[ECO "B00"]

1. e4 a6 2. d4 b5 3. a4 Bb7 4. Nf3 b4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. Nd2 a6 4. Ngf3 Bg4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 a6 *

[ECO "A40"]

1. d4 a6 2. e4 b5 3. a4 Bb7 4. Nf3 Bxe4 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bf5 3. c3 e6 4. Qb3 b6 *

[ECO "C02"]

1. d4 e6 2. e4 d5 3. e5 b6 4. Nc3 Ba6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 Nc6 4. e3 g6 *

[ECO "A13"]

1. c4 e6 2. Nc3 b6 3. Nf3 Bb7 4. g3 Bxf3 *

[ECO "C00"]

1. e4 e6 2. c4 b6 3. Nf3 Bb7 4. Qe2 c5 *

[ECO "C00"]

1. e4 e6 2. d4 b6 3. Bd3 Bb7 4. Qe2 c5 *

[ECO "B21"]

1. e4 c5 2. f4 b6 3. Nc3 Bb7 4. Nf3 e6 *

[ECO "A04"]

1. Nf3 c5 2. g3 g6 3. c3 b6 4. Bg2 Bb7 *

[ECO "A04"]

1. Nf3 b6 2. e4 Bb7 3. Nc3 c5 4. d4 cxd4 *

[ECO "A04"]

1. Nf3 c5 2. c4 b6 3. e4 Bb7 4. Nc3 d6 *

[ECO "B20"]

1. e4 c5 2. b3 b6 3. Bb2 Bb7 4. Nc3 d6 *

[ECO "A40"]

1. c4 b6 2. d4 e6 3. Bf4 Bb7 4. e3 d6 *

[ECO "A40"]

1. d4 e6 2. Nf3 b6 3. g3 Bb7 4. Bg2 d6 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. e3 Nbd7 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Nc3 Bb7 4. a3 d5 *

[ECO "B00"]

1. e4 b6 2. d4 Bb7 3. Bd3 e6 4. c4 d5 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 b6 4. Nf3 Bb7 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. e4 Bb7 4. Nd2 g6 *

[ECO "C00"]

1. e4 e6 2. d4 b6 3. c4 Bb7 4. d5 exd5 *

[ECO "A01"]

1. b3 b6 2. Bb2 Bb7 3. c4 e6 4. Nf3 f5 *

[ECO "A13"]

1. c4 e6 2. Nf3 b6 3. e3 Bb7 4. Be2 f5 *

[ECO "A13"]

1. c4 e6 2. Nf3 b6 3. g3 Bb7 4. Bg2 f5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Nf3 Bb7 4. a3 f5 *

[ECO "A40"]

1. d4 e6 2. g3 f5 3. Nf3 b6 4. Bg2 Bb7 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 b6 3. e4 Bb7 4. e5 Ng8 *

[ECO "B20"]

1. e4 c5 2. b3 e6 3. Nf3 d6 4. Bb5+ Bd7 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. b3 d5 4. Bb5+ Bd7 *

[ECO "B20"]

1. e4 c5 2. b3 e6 3. Bb2 d5 4. Bb5+ Bd7 *

[ECO "B21"]

1. e4 c5 2. f4 e6 3. Nf3 d5 4. Bb5+ Bd7 *

[ECO "C00"]

1. e4 e6 2. Nf3 d5 3. e5 c5 4. Bb5+ Bd7 *

[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Qe2 g6 *

[ECO "B21"]

1. e4 c5 2. f4 d6 3. Nf3 g6 4. Bb5+ Bd7 *

[ECO "B13"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bb5+ Bd7 *

[ECO "C61"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Qa4+ Bd7 *

[ECO "B10"]

1. e4 c6 2. c4 d5 3. cxd5 cxd5 4. Qa4+ Bd7 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. Nc3 g6 4. Nf3 Be6 *

[ECO "B06"]

1. e4 g6 2. d4 c6 3. c4 d5 4. e5 Be6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. Nd2 g6 4. Ngf3 Bg4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 h6 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Bf4 Bg4 4. Ne5 Be6 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. Qa4+ c6 4. Qxc4 Be6 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. e3 Bf5 4. Bd3 Bg6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bf5 3. e3 c6 4. Bd3 Bg6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bf5 3. c4 e6 4. Nc3 c6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Ne2 Bg6 *

[ECO "A11"]

1. c4 c6 2. Nf3 d5 3. e3 Bg4 4. cxd5 Bxf3 *

[ECO "A12"]

1. c4 c6 2. Nf3 d5 3. b3 Bg4 4. Bb2 Bxf3 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bg4 4. c4 Bxf3 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. c3 Bg4 4. Bf4 Bxf3 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Bf4 Bg4 4. Nbd2 Bxf3 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. b3 Bg4 4. Bb2 Bxf3 *

[ECO "A12"]

1. Nf3 d5 2. b3 c6 3. c4 Bg4 4. Ne5 Bh5 *

[ECO "A12"]

1. Nf3 d5 2. c4 c6 3. b3 Bg4 4. Ne5 Bf5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 Bg4 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. b4 Bg7 4. Bb2 O-O *

[ECO "B10"]

1. e4 c6 2. f4 d6 3. d4 d5 4. e5 Bf5 *

[ECO "B10"]

1. e4 c6 2. c4 d5 3. e5 d4 4. Nf3 Bg4 *

[ECO "B10"]

1. e4 c6 2. Nc3 d5 3. g3 dxe4 4. Nxe4 Bf5 *

[ECO "B11"]

1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. Be2 dxe4 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. g3 Bxf3 4. exf3 c6 *

[ECO "A30"]

1. c4 c5 2. Nf3 d6 3. e4 Bg4 4. Nc3 Bxf3 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. c3 c5 *

[ECO "D11"]

1. d4 d5 2. c4 c6 3. Nf3 Bf5 4. cxd5 cxd5 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. g3 Bf5 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. c5 Bf5 4. Nc3 e6 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Be7 4. Bd3 c5 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Nbd2 Bf5 4. c4 e6 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. e3 Bf5 4. b3 e6 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. e3 Bf5 4. Bd3 e6 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. e3 Bf5 4. Nbd2 e6 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bf5 4. d3 e6 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bf5 4. O-O e6 *

[ECO "A11"]

1. c4 c6 2. b3 d5 3. Bb2 Bg4 4. g3 e6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. Ne5 Bf5 4. c4 f6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Bg4 3. Ne5 Bf5 4. g4 Be6 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. Nf3 Bg4 *

[ECO "B15"]

1. Nc3 d5 2. d4 c6 3. e4 g6 4. f3 Bg7 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. c4 e5 4. Nf3 Bg4 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. d3 Be6 4. Nf3 g6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. e4 e6 4. h3 Bxf3 *

[ECO "A00"]

1. Nc3 d5 2. e4 d4 3. Nce2 e5 4. Ng3 Be6 *

[ECO "A00"]

1. b4 d5 2. Bb2 Bg4 3. h3 Bh5 4. g3 e6 *

[ECO "A06"]

1. Nf3 d5 2. e3 Bg4 3. c4 Bxf3 4. gxf3 e6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. Ne5 Bf5 4. d4 e6 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. cxd5 exd5 4. Nc3 Bf5 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. c4 e6 4. cxd5 exd5 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. d5 d6 4. dxe6 Bxe6 *

[ECO "A40"]

1. d4 g6 2. e4 d6 3. Nf3 Bg7 4. Bc4 c6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Bf5 3. Nh4 Bd7 4. Nf3 e6 *

[ECO "C00"]

1. e4 e6 2. Nc3 d5 3. Nf3 dxe4 4. Nxe4 Bd7 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. g3 dxc4 4. Qa4+ Bd7 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. c4 dxc4 4. Qa4+ Bd7 *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bb5+ Bd7 *

[ECO "A40"]

1. c4 e6 2. d4 b6 3. e4 Bb7 4. Qc2 Qf6 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. Bf4 Bf5 4. c4 Qb6 *

[ECO "D00"]

1. d4 d5 2. Bg5 c6 3. Nf3 Qb6 4. Qc1 Bf5 *

[ECO "D00"]

1. d4 d5 2. Bg5 c6 3. Nf3 Qb6 4. b3 Bg4 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Bf4 Qb6 4. Qc1 Bg4 *

[ECO "B04"]

1. e4 Nf6 2. e5 Nd5 3. Nf3 d6 4. d4 dxe5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. Nd2 Qb6 4. Ngf3 Bg4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. c3 Qb6 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. exd5 Qxd5 4. Be2 Bf5 *

[ECO "B22"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. Nf3 Bg4 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Bc4 Bf5 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Nf3 Bf5 *

[ECO "A20"]

1. c4 e5 2. g4 d5 3. cxd5 Qxd5 4. Nf3 Bxg4 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. d4 c5 4. dxc5 Qa5+ *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c3 Qa5 4. Na3 Bg7 *

[ECO "D00"]

1. d4 d5 2. Bf4 e6 3. e3 Bd6 4. Bxd6 Qxd6 *

[ECO "A48"]

1. Nf3 g6 2. d4 Nf6 3. Bg5 Bg7 4. Nbd2 c5 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 Qe7 4. g3 f5 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. f4 Bb4+ 4. Bd2 Qe7 *

[ECO "A40"]

1. d4 g6 2. Nf3 Bg7 3. g3 c5 4. c3 Qc7 *

[ECO "E40"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. e3 Qe7 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Qc2 Nf6 4. Nf3 Qe7 *

[ECO "A00"]

1. b4 d5 2. Bb2 Qd6 3. Nc3 Nf6 4. a3 a6 *

[ECO "A46"]

1. d4 Nf6 2. Bg5 e6 3. e4 c5 4. Nf3 Qb6 *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. Nf3 Qa5 4. Be2 Nf6 *

[ECO "C26"]

1. e4 e5 2. Nc3 Nf6 3. g3 c6 4. d4 Qa5 *

[ECO "A43"]

1. d4 c5 2. dxc5 e6 3. Nc3 Nf6 4. e4 Qa5 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 d6 3. g3 e5 4. Bg2 Be7 *

[ECO "A80"]

1. d4 f5 2. Bg5 c6 3. e3 Qb6 4. b3 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. Bxf6 gxf6 4. c3 Qb6 *

[ECO "E60"]

1. c4 Nf6 2. d4 g6 3. g3 c5 4. dxc5 Qa5+ *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. Qc2 c5 4. dxc5 Qa5+ *

[ECO "D00"]

1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. c3 Qb6 *

[ECO "D01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 c6 4. Nf3 Qb6 *

[ECO "A15"]

1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. Qb3 Qb6 *

[ECO "A50"]

1. d4 Nf6 2. c4 c6 3. Bf4 Qb6 4. b3 d6 *

[ECO "D01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 c6 4. Qd3 Qa5 *

[ECO "A50"]

1. c4 Nf6 2. d4 c6 3. Nc3 Qa5 4. e3 d6 *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. d5 a6 4. Nc3 b5 *

[ECO "A50"]

1. d4 Nf6 2. c4 c6 3. Nc3 Qa5 4. Nf3 d6 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. h3 Qa5 *

[ECO "B07"]

1. e4 c6 2. d4 d6 3. Nc3 Nf6 4. Bf4 Qa5 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d6 3. e4 c5 4. d4 Qa5 *

[ECO "A56"]

1. c4 Nf6 2. d4 c5 3. d5 d6 4. Nc3 Qa5 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. Bc4 Nf6 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. g3 Nf6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Nf3 Qxd5 4. c4 Qa5 *

[ECO "C40"]

1. e4 e5 2. Nf3 Qe7 3. Bc4 d6 4. Nc3 Nf6 *

[ECO "D06"]

1. d4 d5 2. c4 Nf6 3. cxd5 Qxd5 4. Nf3 e6 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 c6 4. d4 exd4 *

[ECO "C00"]

1. e4 e6 2. Bb5 Qg5 3. Bf1 Nf6 4. Nf3 Qa5 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 Qh4+ 4. Kf1 Nf6 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 Qe7 4. d4 Nxe4 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c6 3. Nc3 d6 4. d4 Qc7 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 b6 4. f4 Qd7 *

[ECO "A40"]

1. d4 e6 2. g3 c5 3. Nf3 cxd4 4. Nxd4 Qb6 *

[ECO "C30"]

1. e4 e5 2. f4 c5 3. d3 exf4 4. Bxf4 Qb6 *

[ECO "B10"]

1. e4 c6 2. d3 e5 3. f4 exf4 4. Bxf4 Qb6 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. g3 Qa5+ 4. c3 cxd4 *

[ECO "B22"]

1. e4 c5 2. c3 Qa5 3. Nf3 e6 4. d4 cxd4 *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. Bf4 Nf6 4. e3 c6 *

[ECO "A80"]

1. d4 f5 2. Bg5 c6 3. c4 Qb6 4. Qd2 h6 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bh4 c5 4. e4 Qa5+ *

[ECO "A80"]

1. d4 f5 2. Bg5 c6 3. c4 Qb6 4. Qc2 Qxd4 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qd7 *

[ECO "A80"]

1. d4 f5 2. Bg5 d5 3. e3 c6 4. c4 Qb6 *

[ECO "A00"]

1. g3 d5 2. Bg2 c6 3. f4 g6 4. Nf3 Qb6 *

[ECO "B10"]

1. e4 c6 2. Nc3 g6 3. d4 d6 4. Bg5 Qb6 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c3 Qa5 4. Na3 d6 *

[ECO "D00"]

1. d4 d5 2. Bg5 c6 3. e3 Qb6 4. b3 h6 *

[ECO "D00"]

1. d4 d5 2. Bg5 c6 3. e3 h6 4. Bf4 Qb6 *

[ECO "B10"]

1. e4 c6 2. Ne2 d5 3. e5 d4 4. Ng3 Qd5 *

[ECO "B22"]

1. e4 c5 2. c3 Qa5 3. Nf3 d6 4. d4 cxd4 *

[ECO "B20"]

1. e4 c5 2. g3 d5 3. d3 dxe4 4. dxe4 Qxd1+ *

[ECO "B21"]

1. e4 c5 2. f4 d5 3. d3 dxe4 4. dxe4 Qxd1+ *

[ECO "B20"]

1. e4 c5 2. b4 cxb4 3. a3 d5 4. exd5 Qxd5 *

[ECO "A07"]

1. Nf3 d5 2. g3 c5 3. d4 cxd4 4. Bg2 Qa5+ *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. Qh5 d6 4. Bc4 Qe7 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. Bf4 c5 4. e3 Qb6 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. Bf4 e6 4. e3 Qb6 *

[ECO "B06"]

1. e4 g6 2. Nf3 d5 3. exd5 Qxd5 4. Nc3 Qa5 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f3 c6 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. g3 dxc4 4. Na3 Qd5 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e4 e5 4. dxe5 Qxd1+ *

[ECO "A40"]

1. d4 e5 2. dxe5 Qh4 3. Nf3 Qa4 4. Nc3 Qa5 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. d4 Qc7 4. Nc3 cxd4 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. Nf3 c6 4. d4 Qc7 *

[ECO "A40"]

1. d4 e6 2. g3 c5 3. Nf3 cxd4 4. Nxd4 Qc7 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. Bc4 Nxe4 4. Bxf7+ Kxf7 *

[ECO "A17"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 O-O *

[ECO "A00"]

1. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nf6 4. Nc3 O-O *

[ECO "A00"]

1. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nf6 4. g3 O-O *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. d4 Bb4 4. Qc2 O-O *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 Be7 4. e3 O-O *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 Be7 4. Nc3 O-O *

[ECO "E60"]

1. c4 Nf6 2. d4 g6 3. Nf3 Bg7 4. Nbd2 O-O *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. e3 Bg7 4. Bd3 O-O *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Nc3 Bg7 4. e4 O-O *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. d3 O-O *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. g3 g6 4. Bg2 Bg7 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. h3 a6 *

[ECO "A06"]

1. Nf3 d5 2. e3 c5 3. d4 e6 4. c4 Nf6 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nc3 a6 4. a4 d6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 a5 4. Qa4 Bxd2+ *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 a5 4. Nf3 e4 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Qb3 a5 4. a3 Bxc3 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nc3 a6 4. Be3 b5 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 b6 4. Nf3 Be7 *

[ECO "B07"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. c3 b6 *

[ECO "C15"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Ne2 b6 *

[ECO "C00"]

1. e4 e6 2. d4 g6 3. Nc3 b6 4. f4 Bg7 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. Nf3 b6 4. a3 Bxc3 *

[ECO "D90"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d5 *

[ECO "D31"]

1. c4 e6 2. Nc3 d5 3. d4 c6 4. cxd5 cxd5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Nc3 Bb4 4. Bd2 f5 *

[ECO "A34"]

1. c4 c5 2. Nc3 g6 3. b3 Bg7 4. Bb2 b6 *

[ECO "A04"]

1. Nf3 c5 2. c4 b6 3. e3 g6 4. Be2 Bg7 *

[ECO "B27"]

1. Nf3 c5 2. e4 g6 3. c3 b6 4. d4 Bg7 *

[ECO "B06"]

1. e4 g6 2. d4 b6 3. Nf3 c6 4. Nc3 Bg7 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. Be3 b5 *

[ECO "B10"]

1. e4 c6 2. Nc3 g6 3. Bc4 Bg7 4. h4 e6 *

[ECO "B23"]

1. e4 c5 2. Nc3 g6 3. Bc4 Bg7 4. Qf3 e6 *

[ECO "A30"]

1. c4 c5 2. g3 g6 3. Nf3 Bg7 4. Bg2 e6 *

[ECO "C00"]

1. d4 e6 2. e4 g6 3. Bd3 Bg7 4. Be3 c5 *

[ECO "A34"]

1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 e5 *

[ECO "A20"]

1. c4 e5 2. g3 g6 3. Bg2 Bg7 4. e3 c5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Bc5 4. e3 c6 *

[ECO "A20"]

1. c4 e5 2. g3 c6 3. d4 e4 4. d5 Bb4+ *

[ECO "A40"]

1. d4 e6 2. c4 c5 3. d5 exd5 4. cxd5 Bd6 *

[ECO "A40"]

1. c4 e6 2. d4 Bb4+ 3. Nc3 c5 4. e3 Bxc3+ *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Nc3 c5 4. a3 Bxc3+ *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Nc3 c5 4. d5 Bxc3+ *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Nd2 c5 4. e3 cxd4 *

[ECO "D11"]

1. d4 d5 2. c4 c6 3. Nf3 e6 4. Nbd2 f5 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. Nf3 Be7 4. d4 cxd4 *

[ECO "A11"]

1. c4 c6 2. Nf3 f5 3. g3 g6 4. Bg2 Bg7 *

[ECO "A30"]

1. c4 c5 2. g3 g6 3. Nc3 Bg7 4. Bg2 h5 *

[ECO "A04"]

1. Nf3 c5 2. g3 g6 3. d4 cxd4 4. Nxd4 Bg7 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. d4 c6 4. e3 Be7 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. d4 c6 4. e4 Be7 *

[ECO "A43"]

1. d4 c5 2. d5 d6 3. c4 e5 4. Nc3 Be7 *

[ECO "C07"]

1. d4 e6 2. e4 d5 3. Nd2 c5 4. Ngf3 Be7 *

[ECO "B21"]

1. e4 c5 2. f4 e6 3. d3 d5 4. Nf3 Be7 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c3 d6 4. d4 Bh6 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. g3 Bb4 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nc3 c6 4. Be3 d5 *

[ECO "B06"]

1. e4 g6 2. d4 c6 3. c3 Bg7 4. Bd3 d5 *

[ECO "B10"]

1. e4 c6 2. Nf3 g6 3. d4 Bg7 4. Be2 d5 *

[ECO "A07"]

1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. d3 c6 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 g6 4. O-O Bg7 *

[ECO "B10"]

1. e4 c6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d6 *

[ECO "A41"]

1. d4 d6 2. Nf3 g6 3. c4 Bg7 4. Nc3 c6 *

[ECO "B10"]

1. e4 c6 2. c4 d6 3. d4 g6 4. f4 Bg7 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nc3 d6 4. Be2 c6 *

[ECO "B23"]

1. e4 c5 2. Nc3 g6 3. Bc4 Bg7 4. f4 d6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d4 e4 *

[ECO "B20"]

1. e4 c5 2. c4 g6 3. Nf3 Bg7 4. Nc3 d6 *

[ECO "A30"]

1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. e4 d6 *

[ECO "A42"]

1. d4 g6 2. c4 Bg7 3. e4 d6 4. Nc3 c5 *

[ECO "B20"]

1. e4 c5 2. Ne2 g6 3. c4 Bg7 4. d4 d6 *

[ECO "A40"]

1. d4 g6 2. g3 Bg7 3. Bg2 d6 4. Nf3 c5 *

[ECO "A04"]

1. Nf3 g6 2. e4 d6 3. d4 Bg7 4. h3 c5 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Be2 c5 *

[ECO "B20"]

1. e4 c5 2. g3 g6 3. Nc3 d6 4. d3 Bg7 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. g3 g6 4. d3 Bg7 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. g3 dxc4 4. Qa4+ Nd7 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. e4 d6 4. Ne2 c5 *

[ECO "A30"]

1. c4 c5 2. g3 g6 3. d4 Bg7 4. d5 d6 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c3 d5 4. e5 Bg7 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. Bf4 c5 4. e3 Bd6 *

[ECO "A00"]

1. c3 f5 2. d4 e6 3. Nf3 d5 4. Bg5 Be7 *

[ECO "B00"]

1. e4 d6 2. Nc3 e5 3. Bc4 Be7 4. Qh5 g6 *

[ECO "A80"]

1. d4 f5 2. Nf3 d6 3. c4 g6 4. Nc3 Bg7 *

[ECO "B06"]

1. e4 g6 2. Nf3 Bg7 3. d4 d6 4. Be2 f5 *

[ECO "A41"]

1. d4 d6 2. Bg5 h6 3. Bh4 g5 4. Bg3 Bg7 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. f4 d5 4. e5 h5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nc6 3. Bf4 Bg4 4. e3 e6 *

[ECO "A07"]

1. Nf3 d5 2. g3 g6 3. c4 d4 4. d3 Bg7 *

[ECO "A21"]

1. c4 e5 2. Nc3 g6 3. g3 Bg7 4. e4 d6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. e3 g6 4. Nf3 Bg7 *

[ECO "A21"]

1. c4 e5 2. Nc3 g6 3. g3 d6 4. Nf3 Bg7 *

[ECO "A04"]

1. Nf3 g6 2. c4 Bg7 3. Nc3 e5 4. d3 d6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. g3 g6 4. d3 Bg7 *

[ECO "A20"]

1. c4 e5 2. g3 g6 3. Bg2 d6 4. Nh3 Bg7 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. Bg2 g6 4. d4 Bg7 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. e3 g6 4. d4 Bg7 *

[ECO "A40"]

1. d4 g6 2. e4 d6 3. Nd2 Bg7 4. c3 e5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. e3 Qb6 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. Nf3 Bg7 4. Bd3 e5 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. d4 d6 4. e4 e5 *

[ECO "C00"]

1. e4 e6 2. d4 g6 3. Bf4 Bg7 4. Bc4 d5 *

[ECO "A00"]

1. g3 d5 2. Bg2 g6 3. Nf3 Bg7 4. O-O e5 *

[ECO "C36"]

1. e4 e5 2. f4 exf4 3. Nf3 d5 4. exd5 Bd6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 Bxd2+ 4. Qxd2 d5 *

[ECO "D00"]

1. d4 d5 2. Bf4 e6 3. e3 Bd6 4. c3 Bxf4 *

[ECO "C00"]

1. e4 e6 2. Nf3 d5 3. Nc3 Bb4 4. a3 Bxc3 *

[ECO "D31"]

1. c4 e6 2. Nc3 d5 3. d4 Bb4 4. Nf3 dxc4 *

[ECO "B40"]

1. d4 e6 2. e4 c5 3. Nf3 cxd4 4. Nxd4 Qb6 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e3 e5 4. Bxc4 Bb4+ *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. d5 Bd6 4. dxe6 dxe6 *

[ECO "D31"]

1. d4 d5 2. c4 e6 3. Nc3 f5 4. g3 Bb4 *

[ECO "A21"]

1. c4 e5 2. Nc3 g6 3. d4 Bg7 4. dxe5 Bxe5 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. f4 Bc5 4. c3 dxc3 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. Nf3 Bb4+ 4. c3 dxc3 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. f4 Bb4+ 4. c3 dxc3 *

[ECO "C35"]

1. e4 e5 2. f4 exf4 3. Nf3 Be7 4. Bc4 Bh4+ *

[ECO "C35"]

1. e4 e5 2. f4 exf4 3. Nf3 Be7 4. Nc3 Bh4+ *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nf3 Bb4+ 4. Bd2 Bxd2+ *

[ECO "B22"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 g6 *

[ECO "C00"]

1. d4 e6 2. e4 f6 3. Nc3 Bb4 4. a3 Bxc3+ *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 Be7 4. g3 f5 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bh4 g5 4. e3 Bg7 *

[ECO "B00"]

1. e4 g5 2. d4 h6 3. h4 gxh4 4. Nc3 Bg7 *

[ECO "E22"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. Qb3 a5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 a5 4. e3 Nf6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 a5 4. Nf3 Nf6 *

[ECO "E40"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. e3 a6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. b4 Bg7 4. Bb2 a6 *

[ECO "A17"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 b6 4. e4 Bb4 *

[ECO "B31"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nc3 a6 4. f4 d6 *

[ECO "A40"]

1. c4 e6 2. d4 b6 3. Bf4 Bb4+ 4. Nc3 Nf6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Bf4 Bb4+ 4. Nd2 Nf6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bb5 Be7 *

[ECO "A40"]

1. d4 e6 2. Bf4 Nf6 3. Bg5 b6 4. e4 Be7 *

[ECO "A15"]

1. c4 Nf6 2. g3 e6 3. Nf3 Be7 4. Bg2 b6 *

[ECO "C00"]

1. e4 e6 2. Nf3 Be7 3. d4 b6 4. Nc3 Nf6 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. g3 b5 4. a3 Be7 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 c6 4. Bg5 Bb4+ *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. Nc3 Bc5 4. g3 Nf6 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 c6 4. a3 Bc5 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. cxd5 exd5 4. Nc3 Bb4 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Bb3 Bc5 *

[ECO "A00"]

1. b4 c6 2. e3 e5 3. Bb2 Bxb4 4. Bxe5 Nf6 *

[ECO "A21"]

1. c4 e5 2. Nc3 c6 3. e4 Bb4 4. Nge2 Nf6 *

[ECO "A20"]

1. c3 e5 2. c4 Nf6 3. d3 c6 4. Nf3 Bd6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. dxc5 e6 4. e3 Bxc5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. dxc5 e6 4. Nd2 Bxc5 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. dxc5 Bxc5 4. e4 Nf6 *

[ECO "A00"]

1. b4 Nf6 2. Bb2 e6 3. a3 c5 4. bxc5 Bxc5 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Bg5 Bb4+ 4. Nd2 c5 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 e6 3. g3 c6 4. Bg2 Be7 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Be2 Nf6 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Bb3 Be7 *

[ECO "E00"]

1. c4 Nf6 2. d4 e6 3. Nc3 c5 4. e3 Be7 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. e3 Nf6 4. Bd3 Be7 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. d3 Be7 *

[ECO "A04"]

1. Nf3 c5 2. g3 e6 3. Bg2 Nf6 4. O-O Be7 *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. e3 Bg7 4. Bb5 c6 *

[ECO "E60"]

1. d4 Nf6 2. g3 g6 3. c4 c6 4. d5 Bg7 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. c4 Bg7 4. Nc3 c6 *

[ECO "E61"]

1. c4 Nf6 2. d4 g6 3. Nc3 Bg7 4. g3 c6 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 Bg7 4. e4 d6 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. Nf3 c5 4. dxc5 Bg7 *

[ECO "A30"]

1. c4 c5 2. g3 Nf6 3. Bg2 g6 4. b3 Bg7 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 c5 3. e3 g6 4. Qc2 Bg7 *

[ECO "A30"]

1. c4 c5 2. Nf3 g6 3. e3 Bg7 4. Be2 Nf6 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. Bf4 c5 4. e3 Bg7 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c5 3. e3 g6 4. d4 Bg7 *

[ECO "A43"]

1. d4 c5 2. e3 Nf6 3. Nf3 g6 4. Nc3 Bg7 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. d3 g6 4. Nf3 Bg7 *

[ECO "A04"]

1. Nf3 c5 2. g3 g6 3. Bg2 Bg7 4. c3 Nf6 *

[ECO "A04"]

1. Nf3 c5 2. g3 g6 3. Bg2 Bg7 4. O-O Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. Bxf6 gxf6 4. d5 Bg7 *

[ECO "A00"]

1. b4 e5 2. b5 Nf6 3. Bb2 d6 4. e3 Be7 *

[ECO "C41"]

1. e4 e5 2. Bc4 d6 3. Nf3 Be7 4. c3 Nf6 *

[ECO "C23"]

1. e4 e5 2. Bc4 d6 3. Nf3 Be7 4. h3 Nf6 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. c4 Nf6 4. Nc3 Be7 *

[ECO "A00"]

1. g3 e5 2. Bg2 Nf6 3. Nf3 d6 4. c4 Be7 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. d3 d6 4. g3 Be7 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 e6 3. Nc3 Be7 4. e4 d6 *

[ECO "E00"]

1. c4 Nf6 2. d4 e6 3. Bg5 d5 4. e3 Be7 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. e3 e6 4. Nd2 Be7 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. e3 Nf6 4. a3 Be7 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. e3 Be7 *

[ECO "D05"]

1. Nf3 d5 2. d4 Nf6 3. e3 e6 4. Bd3 Be7 *

[ECO "A01"]

1. b3 Nf6 2. Bb2 d5 3. e3 e6 4. f4 Be7 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 Nf6 4. Bg5 Be7 *

[ECO "A07"]

1. Nf3 d5 2. g3 e6 3. Bg2 Bd6 4. O-O Ne7 *

[ECO "C15"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Bd3 Ne7 *

[ECO "C00"]

1. e4 e6 2. Nc3 d5 3. Nf3 Bb4 4. Be2 Ne7 *

[ECO "D31"]

1. d4 d5 2. c4 e6 3. Nc3 Bb4 4. Nf3 Ne7 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 d5 4. c4 Bh6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 h6 4. Bh4 d6 *

[ECO "A45"]

1. d4 Nf6 2. c3 g6 3. Bg5 Bg7 4. Nd2 d6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. c4 g6 4. Nc3 Bg7 *

[ECO "A49"]

1. d4 Nf6 2. g3 g6 3. Nf3 d6 4. b3 Bg7 *

[ECO "A04"]

1. Nf3 d6 2. g3 g6 3. Nc3 Bg7 4. d4 Nf6 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. d4 d6 4. Nc3 Nf6 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. Be2 d6 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. c3 d6 4. Be3 Nf6 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 g6 4. Be3 Bg7 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. c3 Bg7 4. Bg5 d5 *

[ECO "A00"]

1. b4 g6 2. Nf3 Bg7 3. Nc3 Nf6 4. d4 d5 *

[ECO "C29"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. b4 Bg7 4. e3 d5 *

[ECO "A00"]

1. b4 g6 2. Bb2 Nf6 3. Nf3 d5 4. e3 Bg7 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. b4 d5 4. Bb2 Bg7 *

[ECO "A15"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. b3 d5 *

[ECO "A01"]

1. b3 g6 2. Bb2 Nf6 3. c4 Bg7 4. g3 d5 *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. Bf4 Bg7 4. c4 d5 *

[ECO "D80"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. h4 Bg7 *

[ECO "D00"]

1. Nc3 d5 2. d4 Nf6 3. Bf4 g6 4. h4 Bg7 *

[ECO "A06"]

1. Nf3 d5 2. b3 Nf6 3. e3 g6 4. d4 Bg7 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. Nc3 g6 4. g3 Bg7 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d5 3. d4 g6 4. Nb1 Bg7 *

[ECO "D00"]

1. d4 d5 2. a3 g6 3. Nf3 Bg7 4. g3 Nf6 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. c3 d5 4. Nd2 Nf6 *

[ECO "A00"]

1. g3 g6 2. Bg2 d5 3. d3 Bg7 4. f4 Nf6 *

[ECO "A00"]

1. g3 d5 2. f4 g6 3. Nf3 Bg7 4. Bg2 Nf6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Nf6 3. Bb2 g6 4. g3 Bg7 *

[ECO "A00"]

1. g3 d5 2. d3 g6 3. Bg2 Bg7 4. Nc3 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 g6 4. Ne5 Bg7 *

[ECO "A00"]

1. b4 e6 2. c3 Nf6 3. Nf3 d5 4. d4 Bd6 *

[ECO "A00"]

1. b4 e6 2. a3 d5 3. Nf3 Nf6 4. e3 Bd6 *

[ECO "A00"]

1. b4 Nf6 2. Nf3 d5 3. Bb2 e6 4. a3 Bd6 *

[ECO "A06"]

1. Nf3 d5 2. e3 Nf6 3. Be2 e6 4. c4 Bd6 *

[ECO "A01"]

1. b3 Nf6 2. Bb2 d5 3. e3 e6 4. f4 Bd6 *

[ECO "A03"]

1. f4 d5 2. e3 e6 3. Nf3 Nf6 4. Be2 Bd6 *

[ECO "C30"]

1. e4 e5 2. f4 Bc5 3. Nf3 d6 4. Bc4 Nf6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e4 Bc5 4. Be2 d6 *

[ECO "C25"]

1. e4 e5 2. Nc3 Bc5 3. Bc4 d6 4. Na4 Nf6 *

[ECO "C25"]

1. e4 e5 2. Nc3 Bc5 3. Nf3 d6 4. Na4 Nf6 *

[ECO "D01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 e6 4. e3 Bb4 *

[ECO "A40"]

1. d4 e6 2. h4 d5 3. Nc3 Nf6 4. Bf4 Bb4 *

[ECO "C48"]

1. e4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. Bb5 Bc5 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. Nc3 Bb4 4. Bd2 d5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 e6 3. Bg2 d5 4. O-O Bb4 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. e3 g6 4. c4 Bg7 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. Nf3 e6 4. h3 Bg7 *

[ECO "A46"]

1. d4 e6 2. Nf3 Nf6 3. e3 g6 4. Bd3 Bg7 *

[ECO "C26"]

1. e4 e5 2. g3 Nf6 3. Nc3 g6 4. Bg2 Bg7 *

[ECO "C23"]

1. e4 e5 2. Bc4 Bc5 3. Nc3 Nf6 4. Nh3 h6 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 Bc5 4. Nc3 h6 *

[ECO "A20"]

1. c4 e5 2. a3 Nf6 3. Nc3 h6 4. e4 Bc5 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 h6 4. d3 Bb4+ *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c5 3. g3 Nc6 4. Bg2 e6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 e6 4. f3 Bd6 *

[ECO "E40"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Ne4 *

[ECO "E22"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 Bxc3+ *

[ECO "E20"]

1. d4 Nf6 2. g3 e6 3. c4 Bb4+ 4. Nc3 Bxc3+ *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. f4 e4 4. e3 Bc5 *

[ECO "A20"]

1. c4 e5 2. d3 Bb4+ 3. Bd2 Bxd2+ 4. Nxd2 Nf6 *

[ECO "A20"]

1. c3 e5 2. c4 Nf6 3. d3 Bb4+ 4. Bd2 Bxd2+ *

[ECO "C26"]

1. e4 e5 2. Nc3 Nf6 3. g3 Bb4 4. Nge2 Bxc3 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. a3 Bxc3 *

[ECO "C26"]

1. e4 e5 2. g3 Nf6 3. Nc3 Bb4 4. a3 Bxc3 *

[ECO "C30"]

1. e4 e5 2. f4 Nf6 3. fxe5 Nxe4 4. Nf3 Bb4 *

[ECO "A51"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nf3 Bb4+ *

[ECO "A52"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 Bb4+ *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. Bf4 Nf6 4. h3 Bd6 *

[ECO "A80"]

1. d4 f5 2. Bf4 Nf6 3. e3 e6 4. Nc3 Bb4 *

[ECO "A13"]

1. c4 e6 2. g3 f5 3. Nc3 Nf6 4. Nf3 Bb4 *

[ECO "A10"]

1. c4 f5 2. g3 Nf6 3. Bg2 e6 4. Nc3 Be7 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. a3 Nf6 4. Nc3 Be7 *

[ECO "A80"]

1. d4 f5 2. c3 Nf6 3. Bf4 e6 4. e3 Be7 *

[ECO "A80"]

1. d4 f5 2. Bf4 Nf6 3. e3 e6 4. Bd3 Be7 *

[ECO "A00"]

1. Nc3 Nf6 2. e4 Nc6 3. d4 d5 4. e5 Ne4 *

[ECO "A80"]

1. d4 f5 2. c3 Nf6 3. Nf3 e6 4. g3 Be7 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. Bg5 Be7 4. h4 Nf6 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. Nc3 e6 4. Bg5 Be7 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. Bg5 e6 4. e3 Be7 *

[ECO "A04"]

1. Nf3 g6 2. g3 Bg7 3. Bg2 e5 4. O-O Ne7 *

[ECO "A40"]

1. c4 e6 2. d4 Bb4+ 3. Nc3 Ne7 4. Nf3 Bxc3+ *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Bc5 4. e3 Ne7 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. b4 Bg7 *

[ECO "A10"]

1. c4 f5 2. Nf3 Nf6 3. d4 g6 4. b4 Bg7 *

[ECO "A10"]

1. c4 f5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. c4 Nbd7 4. Nc3 g6 *

[ECO "A85"]

1. d4 f5 2. c4 Nf6 3. Nc3 g6 4. f3 Bg7 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. h3 g6 4. Bf4 Bg7 *

[ECO "A04"]

1. Nf3 f5 2. g3 Nf6 3. Bg2 g6 4. b3 Bg7 *

[ECO "A04"]

1. Nf3 f5 2. b3 Nf6 3. Bb2 g6 4. Nc3 Bg7 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. e3 Bg7 4. Nd2 Nf6 *

[ECO "A00"]

1. b4 g6 2. Bb2 Nf6 3. g4 h6 4. Nf3 Bg7 *

[ECO "A01"]

1. b3 g6 2. Bb2 Nf6 3. e4 Bg7 4. e5 Nd5 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 a6 4. Bg5 c5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 a6 3. Bg5 e6 4. e3 c5 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 e6 3. g3 a6 4. b3 c5 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. f4 e6 4. Nf3 a6 *

[ECO "A34"]

1. c4 c5 2. Nc3 Nf6 3. g3 e6 4. Bg2 a6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 e6 3. g3 a6 4. d4 c5 *

[ECO "B23"]

1. Nc3 c5 2. e4 e6 3. Nge2 a6 4. g3 Nf6 *

[ECO "A43"]

1. Nf3 Nf6 2. d4 c5 3. d5 e6 4. Nc3 a6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. b4 c6 4. Bb2 a5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Qb3 a6 *

[ECO "D11"]

1. Nf3 Nf6 2. d4 d5 3. c4 c6 4. Nbd2 a6 *

[ECO "A09"]

1. Nf3 d5 2. c4 c6 3. Qc2 Nf6 4. d4 a6 *

[ECO "A45"]

1. d4 Nf6 2. g3 d5 3. Nf3 c6 4. Bg2 a6 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. Nc3 a6 4. Bc4 Nf6 *

[ECO "B31"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 bxc6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. Qe2 a6 *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. d5 a6 4. a4 d6 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. c3 d5 4. exd5 Nf6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Nf6 3. e3 c5 4. Bb2 a6 *

[ECO "A06"]

1. b3 d5 2. Nf3 c5 3. e3 Nf6 4. Nc3 a6 *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. Bg5 Nf6 4. f3 a6 *

[ECO "A00"]

1. b4 e6 2. Ba3 Nf6 3. Nf3 d5 4. e3 a5 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 e6 3. g3 a6 4. d3 d5 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 e6 3. g3 a6 4. Bg2 d5 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. Nc3 e6 4. e3 a6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 g6 4. d4 cxd4 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 a6 3. Bg5 e6 4. e3 h6 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 a6 4. g3 b5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. Na3 a6 4. c4 e5 *

[ECO "D25"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 b5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. a4 b4 4. Bg2 d5 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 e6 3. Qc2 b6 4. e4 d6 *

[ECO "A41"]

1. d4 d6 2. e4 b6 3. Nf3 Nf6 4. Nc3 e6 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nbd2 b6 *

[ECO "D04"]

1. d4 d5 2. Nf3 Nf6 3. e3 b6 4. Ne5 e6 *

[ECO "A08"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. c4 d4 *

[ECO "A40"]

1. d4 e6 2. g3 d5 3. Bg2 b5 4. c3 Nf6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. d4 b5 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Bg5 b6 4. e4 h6 *

[ECO "A46"]

1. d4 Nf6 2. Bg5 e6 3. Nf3 b6 4. e3 h6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 b5 3. e4 Nxe4 4. Bxb5 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. a4 b4 4. Bg2 e6 *

[ECO "A13"]

1. c4 e6 2. Nf3 f5 3. b3 Nf6 4. Bb2 b6 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. Bf4 Nf6 4. Nbd2 b6 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. e3 Nf6 4. Bd3 b6 *

[ECO "A83"]

1. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. Bg5 b6 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. Nf3 b6 4. d4 Bb7 *

[ECO "A46"]

1. d4 Nf6 2. Bg5 e6 3. Nf3 c5 4. e3 b6 *

[ECO "A17"]

1. c4 Nf6 2. Nf3 e6 3. Nc3 b6 4. a3 c5 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. e3 b6 *

[ECO "A40"]

1. d4 e6 2. Nf3 Nf6 3. Bf4 c5 4. e3 b6 *

[ECO "E12"]

1. d4 e6 2. c4 Nf6 3. Nf3 b6 4. a3 c6 *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 e6 *

[ECO "A45"]

1. d4 Nf6 2. g3 e6 3. Bg2 c5 4. Nf3 b5 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. g3 b5 4. a3 c5 *

[ECO "A30"]

1. c4 c5 2. Nf3 b6 3. Nc3 Nf6 4. d3 g6 *

[ECO "D11"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. e3 a6 *

[ECO "A45"]

1. d4 Nf6 2. Nc3 d5 3. Bf4 Bf5 4. Nf3 c6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c5 3. c3 g6 4. Bf4 b6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c5 3. c3 g6 4. g3 b6 *

[ECO "A48"]

1. d4 g6 2. Nf3 Nf6 3. e3 c5 4. Nbd2 b6 *

[ECO "A49"]

1. Nf3 Nf6 2. d4 g6 3. g3 c5 4. d5 b5 *

[ECO "A50"]

1. c4 Nf6 2. d4 c6 3. Nf3 b5 4. Nbd2 bxc4 *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nf3 bxc4 *

[ECO "D01"]

1. d4 d5 2. Nc3 Nf6 3. Bg5 c6 4. Qd2 b5 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d6 3. d4 c6 4. e4 b5 *

[ECO "B07"]

1. e4 c6 2. d4 d6 3. Nc3 Nf6 4. h3 b5 *

[ECO "A00"]

1. Nc3 Nf6 2. e4 d6 3. f4 c6 4. Nf3 b5 *

[ECO "D11"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Qc2 Bg4 *

[ECO "B10"]

1. e4 c6 2. d3 d5 3. Nd2 Nf6 4. e5 Nfd7 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 d5 3. e5 Nfd7 4. f4 c5 *

[ECO "B29"]

1. e4 c5 2. Nf3 Nf6 3. Nc3 d5 4. e5 Nfd7 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. Nf3 c5 4. dxc5 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. e3 c5 3. d4 g6 4. dxc5 e6 *

[ECO "A49"]

1. d4 Nf6 2. Nf3 g6 3. g3 c5 4. dxc5 e6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 e6 4. e3 g6 *

[ECO "B21"]

1. e4 c5 2. f4 e6 3. Nc3 Ne7 4. Nf3 Nec6 *

[ECO "A20"]

1. c4 e5 2. a3 Nf6 3. e3 c6 4. d4 e4 *

[ECO "A21"]

1. c4 e5 2. Nc3 c6 3. d4 exd4 4. Qxd4 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Bf5 4. c4 e6 *

[ECO "A20"]

1. c4 e5 2. e3 c6 3. d4 exd4 4. Qxd4 Nf6 *

[ECO "A20"]

1. c4 e5 2. e3 Nf6 3. a3 c6 4. d4 exd4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. d5 Ne4 4. Bc1 e6 *

[ECO "B20"]

1. e4 c5 2. b3 e6 3. Bb2 Nf6 4. e5 Nd5 *

[ECO "B40"]

1. Nf3 c5 2. e4 e6 3. Be2 Nf6 4. e5 Nd5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. g3 Nf6 4. e5 Nd5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. Nc3 cxd4 4. Qxd4 e6 *

[ECO "E00"]

1. d4 e6 2. c4 Nf6 3. Qc2 c5 4. e3 cxd4 *

[ECO "B22"]

1. e4 c5 2. c3 e6 3. d4 cxd4 4. cxd4 Nf6 *

[ECO "A43"]

1. d4 c5 2. d5 e6 3. Nc3 exd5 4. Nxd5 Nf6 *

[ECO "A40"]

1. d4 e6 2. c4 c5 3. d5 exd5 4. cxd5 Nf6 *

[ECO "A43"]

1. d4 e6 2. e4 c5 3. d5 Nf6 4. Nc3 exd5 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nc3 Nf6 4. g3 c6 *

[ECO "A84"]

1. d4 f5 2. c4 c6 3. Nc3 Nf6 4. Bg5 e6 *

[ECO "A80"]

1. d4 f5 2. Bg5 c6 3. Nc3 Nf6 4. e3 e6 *

[ECO "A40"]

1. d4 e6 2. c4 c5 3. e3 f5 4. Nc3 Nf6 *

[ECO "A10"]

1. c4 f5 2. Nf3 Nf6 3. e3 c5 4. d4 e6 *

[ECO "A90"]

1. d4 e6 2. g3 f5 3. Bg2 Nf6 4. c4 c5 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. Bf4 Nf6 4. h3 c5 *

[ECO "A43"]

1. d4 c5 2. d5 f5 3. g3 Nf6 4. Bg2 e5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. c4 a6 4. Nc3 Qc7 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bf4 Nf6 4. e3 c5 *

[ECO "A81"]

1. d4 f5 2. g3 c6 3. Nc3 Nf6 4. Nf3 g6 *

[ECO "A10"]

1. c4 f5 2. g3 Nf6 3. Nc3 g6 4. Bg2 c5 *

[ECO "A85"]

1. d4 f5 2. c4 Nf6 3. Nc3 g6 4. f3 c5 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. c4 c5 *

[ECO "A43"]

1. d4 c5 2. d5 f5 3. Nc3 Nf6 4. g3 g6 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. d5 c6 4. Nc3 cxd5 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. g3 c6 4. d5 cxd5 *

[ECO "A34"]

1. c4 c5 2. Nc3 g6 3. d4 cxd4 4. Qxd4 Nf6 *

[ECO "A30"]

1. c4 c5 2. g3 g6 3. d4 cxd4 4. Qxd4 Nf6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Be7 4. Nf3 d6 *

[ECO "A31"]

1. c4 c5 2. Nf3 Nf6 3. d4 g6 4. e3 cxd4 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c5 3. e3 cxd4 4. exd4 g6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bh4 c5 4. f3 g5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bh4 g5 4. Bg3 c5 *

[ECO "B06"]

1. e4 g6 2. h4 h5 3. Bc4 c6 4. Nc3 Nf6 *

[ECO "B27"]

1. e4 c5 2. Nf3 h6 3. d4 cxd4 4. Nxd4 Nf6 *

[ECO "B10"]

1. e4 c6 2. a3 Nf6 3. e5 Nd5 4. c4 Nb6 *

[ECO "B03"]

1. e4 Nf6 2. e5 Nd5 3. d4 c5 4. c4 Nb4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. Nd2 Nxd2 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bh4 c5 4. Nd2 Nxd2 *

[ECO "A07"]

1. g3 d5 2. Nf3 g6 3. c4 e6 4. Bg2 Bg7 *

[ECO "B29"]

1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. d4 cxd4 *

[ECO "B10"]

1. e4 c6 2. c4 e6 3. Nc3 Ne7 4. Nf3 d5 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 f5 4. O-O Nf6 *

[ECO "A81"]

1. d4 f5 2. g3 d6 3. Bg2 Nf6 4. Nh3 c6 *

[ECO "D00"]

1. d4 d5 2. Bg5 f6 3. Bh4 Nh6 4. f3 c5 *

[ECO "D70"]

1. d4 Nf6 2. c4 g6 3. g3 d5 4. cxd5 c6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. g3 c6 4. Nc3 d5 *

[ECO "A15"]

1. c4 Nf6 2. g3 c6 3. d3 d5 4. Nd2 g6 *

[ECO "D82"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bf4 c6 *

[ECO "E61"]

1. c4 Nf6 2. Nc3 g6 3. d4 c6 4. e4 d5 *

[ECO "A04"]

1. Nf3 d6 2. d4 g6 3. e4 Nf6 4. Bd3 Bg7 *

[ECO "D00"]

1. d4 d5 2. Bf4 Nf6 3. e3 c6 4. Nd2 g6 *

[ECO "D02"]

1. Nf3 Nf6 2. d4 d5 3. Bf4 c6 4. e3 g6 *

[ECO "A45"]

1. d4 Nf6 2. Nc3 d5 3. Nf3 g6 4. h3 c6 *

[ECO "D04"]

1. d4 d5 2. e3 Nf6 3. Nf3 c6 4. Bd3 g6 *

[ECO "B12"]

1. e4 c6 2. d4 g6 3. f4 d5 4. Nc3 Nf6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. Qa4+ c6 *

[ECO "B07"]

1. d4 d6 2. e4 Nf6 3. Nc3 g6 4. g3 c6 *

[ECO "B12"]

1. e4 c6 2. d4 d6 3. Nf3 g6 4. Be2 Nf6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. d3 g6 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. g3 c5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. a3 f5 4. Nc3 Nf6 *

[ECO "B22"]

1. e4 c5 2. c3 d6 3. d4 Nf6 4. Bd3 g6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. g3 g6 4. Bg2 Nf6 *

[ECO "B20"]

1. e4 c5 2. Na3 d6 3. c3 Nf6 4. g3 g6 *

[ECO "A40"]

1. d4 g6 2. g3 c5 3. d5 d6 4. Nf3 Nf6 *

[ECO "A30"]

1. c4 c5 2. g3 Nf6 3. Nf3 d5 4. Bg2 g6 *

[ECO "D80"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. f3 c5 *

[ECO "D00"]

1. d4 d5 2. Bf4 Nf6 3. e3 g6 4. h3 c5 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 d5 4. e3 c5 *

[ECO "D01"]

1. Nc3 Nf6 2. d4 d5 3. Bg5 c6 4. Nf3 h6 *

[ECO "B27"]

1. e4 g6 2. Nf3 c5 3. c3 d6 4. d4 Nf6 *

[ECO "D11"]

1. d4 d5 2. Nf3 c6 3. e3 Nf6 4. c4 h6 *

[ECO "A00"]

1. Nc3 d5 2. Nf3 Nf6 3. d4 c6 4. Bf4 h6 *

[ECO "D02"]

1. d4 d5 2. Bf4 Nf6 3. Nf3 c6 4. e3 h6 *

[ECO "D00"]

1. Nc3 d5 2. d4 c6 3. Bg5 h6 4. Bd2 Nf6 *

[ECO "D00"]

1. d4 d5 2. Bg5 h6 3. Bh4 Nf6 4. e3 c5 *

[ECO "B07"]

1. e4 c6 2. d4 d6 3. Nc3 Nf6 4. f4 d5 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. Bf4 dxc4 4. Nf3 Nf6 *

[ECO "D00"]

1. d4 d5 2. Bf4 c6 3. Nf3 Nf6 4. Nbd2 Nh5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. c3 Ne4 4. Bf4 c6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 c6 4. Nf3 d6 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. Bc4 d6 4. d4 cxd4 *

[ECO "B03"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. exd6 cxd6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. g3 d6 4. exd6 cxd6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 Nf6 4. Na3 c5 *

[ECO "B21"]

1. e4 c5 2. f4 d5 3. Nc3 d4 4. Nce2 Nf6 *

[ECO "D00"]

1. d4 d5 2. e3 Nf6 3. Bd3 c6 4. Nf3 c5 *

[ECO "D01"]

1. d4 d5 2. Nc3 Nf6 3. Bg5 c5 4. e3 cxd4 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 c6 3. e4 d5 4. cxd5 cxd5 *

[ECO "A15"]

1. c4 Nf6 2. g3 c6 3. Bg2 d5 4. cxd5 cxd5 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. Ne5 Nf6 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. g3 d6 *

[ECO "B21"]

1. e4 c5 2. f4 d5 3. exd5 Nf6 4. Nc3 Nxd5 *

[ECO "B20"]

1. e4 c5 2. g3 d5 3. exd5 Nf6 4. Nc3 Nxd5 *

[ECO "A00"]

1. g3 c5 2. c4 Nf6 3. Bg2 d5 4. cxd5 Nxd5 *

[ECO "D01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 c5 4. e4 Nxe4 *

[ECO "C11"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bb5+ c6 *

[ECO "B01"]

1. e4 c6 2. c4 d5 3. exd5 Nf6 4. Qa4 e6 *

[ECO "A00"]

1. b4 c6 2. e3 e6 3. Ba3 Nf6 4. Nf3 d5 *

[ECO "A00"]

1. b4 c6 2. e3 e6 3. a3 Nf6 4. Nf3 d5 *

[ECO "A50"]

1. c4 Nf6 2. d4 c6 3. Bf4 d5 4. e3 e6 *

[ECO "D31"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. g3 Nf6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. c3 d5 4. e5 d4 *

[ECO "A45"]

1. d4 Nf6 2. Nc3 d5 3. Nf3 c6 4. Bf4 e6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Nc3 c6 4. h3 e6 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. Nbd2 Nf6 4. e3 e6 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nf3 c6 4. Nc3 e6 *

[ECO "B10"]

1. e4 c6 2. Nf3 e6 3. d4 d5 4. Nbd2 Nf6 *

[ECO "C00"]

1. e4 e6 2. Nf3 d5 3. Bb5+ c6 4. Bd3 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 c6 3. Bg2 d5 4. b3 e6 *

[ECO "A11"]

1. c4 c6 2. Nc3 d5 3. e3 e5 4. cxd5 Nf6 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Bg5 d5 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Qe2 d5 *

[ECO "B29"]

1. e4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Qc7 *

[ECO "A00"]

1. g3 d5 2. Bg2 c6 3. c4 Nf6 4. Qb3 e5 *

[ECO "A23"]

1. g3 Nf6 2. c4 e5 3. Nc3 c6 4. Nf3 d5 *

[ECO "A23"]

1. c4 Nf6 2. Nc3 e5 3. g3 c6 4. d3 d5 *

[ECO "A15"]

1. c4 Nf6 2. g3 c6 3. d3 d5 4. Nd2 e5 *

[ECO "B10"]

1. e4 c6 2. d3 e5 3. Nf3 Nf6 4. Nbd2 d5 *

[ECO "A00"]

1. g3 Nf6 2. Bg2 d5 3. d3 c6 4. b3 e5 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. Nc3 Nf6 4. Bb5+ c6 *

[ECO "A41"]

1. d4 d6 2. e4 Nf6 3. Bd3 e5 4. d5 c6 *

[ECO "C26"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 c6 4. Qf3 d6 *

[ECO "A20"]

1. c4 e5 2. b3 c6 3. Bb2 d6 4. g3 Nf6 *

[ECO "A40"]

1. d4 e6 2. f4 c5 3. e3 Nf6 4. Nf3 Nc6 *

[ECO "A20"]

1. c4 e5 2. g3 c6 3. Bg2 Nf6 4. Nf3 d6 *

[ECO "C26"]

1. e4 Nf6 2. Nc3 e5 3. g3 c6 4. d4 d6 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 d6 4. g3 c6 *

[ECO "A30"]

1. c4 c5 2. Nf3 d6 3. e4 e5 4. Nc3 Nf6 *

[ECO "B20"]

1. e4 c5 2. Ne2 d6 3. c4 Nf6 4. Nbc3 e5 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nf6 3. g3 d6 4. d3 e5 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. b3 e5 4. Bb2 Nf6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. g3 e5 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 e6 4. Bb5 Nge7 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Bd3 e5 *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. d5 d6 4. g3 e5 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 c5 3. Nf3 e6 4. e3 d6 *

[ECO "A34"]

1. c4 c5 2. Nc3 Nf6 3. g3 d6 4. Bg2 e6 *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. e3 e6 4. Nc3 d6 *

[ECO "B22"]

1. e4 c5 2. c3 d6 3. d4 Nf6 4. f3 e6 *

[ECO "B20"]

1. e4 c5 2. Ne2 d6 3. c3 Nf6 4. f3 e6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. g3 d6 4. Bg2 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. e4 c5 4. d5 d6 *

[ECO "C00"]

1. e4 e6 2. Nc3 d5 3. e5 c5 4. f4 Nh6 *

[ECO "A00"]

1. b4 Nf6 2. Bb2 e6 3. b5 d5 4. Nf3 c5 *

[ECO "A31"]

1. c4 c5 2. Nf3 Nf6 3. d4 d5 4. dxc5 e6 *

[ECO "C07"]

1. d4 e6 2. e4 d5 3. Nd2 c5 4. dxc5 Nf6 *

[ECO "A43"]

1. e4 e6 2. d4 c5 3. d5 Nf6 4. dxe6 dxe6 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. d4 c5 4. cxd5 Nf6 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 c5 3. Nf3 d5 4. cxd5 e6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. Nd2 c5 4. e3 d5 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nf3 e6 4. Bg5 c5 *

[ECO "C43"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 Nc6 *

[ECO "A00"]

1. b4 d5 2. Bb2 Nf6 3. e3 e6 4. a3 c5 *

[ECO "A30"]

1. c4 c5 2. g3 Nf6 3. Bg2 e6 4. e4 d5 *

[ECO "A30"]

1. c4 c5 2. g3 e6 3. b3 d5 4. Bb2 Nf6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 e6 3. Nc3 c5 4. g3 d5 *

[ECO "E00"]

1. d4 Nf6 2. g3 e6 3. c4 d5 4. e3 c5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 e6 4. e3 c5 *

[ECO "D00"]

1. d4 d5 2. f4 Nf6 3. Nf3 c5 4. e3 e6 *

[ECO "A00"]

1. Nc3 d5 2. Nf3 Nf6 3. e3 e6 4. d4 c5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. b3 a6 4. Bb2 Nc6 *

[ECO "D00"]

1. d4 d5 2. e3 Nf6 3. Bd3 c5 4. c3 e6 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. Nbd2 Nf6 4. e3 c5 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nc3 e6 4. Nf3 c5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. a3 c5 4. e3 d5 *

[ECO "C07"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. c3 Nf6 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. g3 d5 4. Bg2 Nf6 *

[ECO "C00"]

1. e4 e6 2. d3 c5 3. g3 d5 4. Nc3 Nf6 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. d3 e6 4. Nf3 d5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 Nf6 4. g3 d5 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 c5 4. e3 e6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 Nd4 4. e3 Nxf3+ *

[ECO "A06"]

1. Nf3 d5 2. b3 c5 3. e3 Nf6 4. Bb2 e6 *

[ECO "D00"]

1. d4 d5 2. Bg5 Nf6 3. Nd2 c5 4. dxc5 e5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. c3 c5 4. dxc5 e5 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 c5 4. Nc3 Nf6 *

[ECO "A00"]

1. g3 d5 2. Bg2 Nf6 3. d3 e5 4. Nd2 c5 *

[ECO "D01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 c5 4. Bxf6 exf6 *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. e4 dxe4 4. Bf4 Nf6 *

[ECO "B06"]

1. d4 d6 2. e4 g6 3. Nc3 Bg7 4. Be3 c6 *

[ECO "A00"]

1. g3 f5 2. Nf3 Nf6 3. Bg2 d5 4. Nc3 d4 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Bf4 Nh5 4. Be5 f6 *

[ECO "A85"]

1. d4 f5 2. c4 Nf6 3. Nc3 g6 4. f3 d6 *

[ECO "A04"]

1. Nf3 d6 2. d4 f5 3. c4 g6 4. e3 Nf6 *

[ECO "A41"]

1. d4 d6 2. Nf3 f5 3. b3 Nf6 4. e3 g6 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. c3 d6 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. b3 d5 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nc3 d5 *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. Bg5 g6 4. Qd2 Nf6 *

[ECO "B03"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. f4 g6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. d4 exd4 4. Qxd4 Nc6 *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. Bf4 d6 4. Nc3 Nh5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d6 4. Nd2 g5 *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. Bf4 d6 4. Nc3 d5 *

[ECO "A41"]

1. d4 d6 2. Nf3 Nf6 3. c3 g6 4. Nbd2 d5 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 Nf6 4. Nxc4 g6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. b3 g6 4. c4 d4 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 g6 4. e3 Nf6 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. Bf4 g6 4. c4 dxc4 *

[ECO "D21"]

1. d4 d5 2. c4 dxc4 3. Nf3 g6 4. e4 Nf6 *

[ECO "D00"]

1. Nc3 d5 2. d4 Nf6 3. Bf4 g6 4. e3 Nh5 *

[ECO "A00"]

1. g3 d5 2. Bg2 Nf6 3. d3 c6 4. Nf3 Bf5 *

[ECO "B06"]

1. e4 g6 2. h4 h6 3. d4 d6 4. Be3 Nf6 *

[ECO "D00"]

1. d4 d5 2. Bg5 h6 3. Bh4 Nf6 4. e3 g5 *

[ECO "D01"]

1. Nc3 Nf6 2. d4 d5 3. Bg5 g6 4. Qd2 h6 *

[ECO "D03"]

1. d4 d5 2. Bg5 Nf6 3. Nf3 Ne4 4. Bh4 h6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. g3 Nb6 4. Nc3 d6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 Nb6 4. a4 d5 *

[ECO "D00"]

1. Nc3 d5 2. d4 Bf5 3. f3 Nf6 4. g4 Bc8 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. Bc4 Nf6 *

[ECO "D06"]

1. d4 Nf6 2. c4 d5 3. cxd5 Qxd5 4. Nc3 Qd8 *

[ECO "D06"]

1. c4 Nf6 2. d4 d5 3. cxd5 Nxd5 4. e4 Nf6 *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 Bf5 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. b3 d6 4. d4 dxe5 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. Bc4 Nxc3 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. c4 e5 4. d5 Nf6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. b4 d6 4. Bb2 e5 *

[ECO "A10"]

1. c4 g6 2. e4 e5 3. Nf3 Nf6 4. Nc3 d6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. b3 d6 4. Bb2 e5 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 g6 3. b3 d6 4. Bb2 e5 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. e3 g6 4. g3 Nf6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 d6 3. g3 e5 4. Bg2 g6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. b3 d6 4. Bg2 e5 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Bb5+ Bd7 *

[ECO "D04"]

1. d4 d5 2. Nf3 Nf6 3. e3 g6 4. Nc3 e6 *

[ECO "C11"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Be3 g6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. Bxf6 gxf6 4. Nc3 e5 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 d6 4. Nf3 h6 *

[ECO "A20"]

1. c4 e5 2. e3 d6 3. Nc3 Nf6 4. d3 h6 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. d3 d6 4. g3 h6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 d6 4. c4 h6 *

[ECO "C00"]

1. d4 e6 2. e4 Nf6 3. Bg5 d6 4. Bd3 h6 *

[ECO "D50"]

1. c4 e6 2. Nc3 d5 3. d4 Nf6 4. Bg5 h6 *

[ECO "A40"]

1. d4 e6 2. Bf4 Nf6 3. Nf3 d5 4. Bg5 h6 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. Bf4 Nf6 4. e3 Qb6 *

[ECO "A45"]

1. d4 Nf6 2. g3 d5 3. Nf3 e6 4. Bg5 h6 *

[ECO "D01"]

1. d4 d5 2. Bg5 Nf6 3. Nc3 h6 4. Bh4 e6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 h6 4. Bh4 d5 *

[ECO "A18"]

1. c4 e6 2. Nc3 Nf6 3. e4 e5 4. f4 d6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. e3 Nf6 4. d4 exd4 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. g3 Nf6 4. d4 exd4 *

[ECO "B03"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. exd6 exd6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. g3 d6 4. exd6 exd6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d6 4. f3 e5 *

[ECO "C03"]

1. d4 e6 2. e4 d5 3. Nd2 Be7 4. e5 c5 *

[ECO "B03"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Bc4 e6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 e6 4. Nf3 d6 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Ne7 4. Ngf3 Ng6 *

[ECO "C00"]

1. e4 e6 2. d4 d5 3. Be3 dxe4 4. f3 Nh6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. Nf3 e6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 d5 3. Nc3 e6 4. cxd5 Nxd5 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. Qf3 e6 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. g3 e6 *

[ECO "D37"]

1. d4 e6 2. c4 Nf6 3. Nc3 d5 4. Nf3 Ne4 *

[ECO "D00"]

1. d4 d5 2. Bg5 Nf6 3. c3 Ne4 4. Bf4 e6 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 c6 4. Nf3 Bd6 *

[ECO "A18"]

1. c4 Nf6 2. Nc3 e6 3. e4 d5 4. e5 Ne4 *

[ECO "A41"]

1. d4 d6 2. Nf3 Nf6 3. Nc3 d5 4. Bf4 e6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 Nf6 4. Na3 e6 *

[ECO "C00"]

1. e4 e6 2. d4 d5 3. c4 dxe4 4. Nc3 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. e3 e6 3. Be2 d5 4. c4 dxc4 *

[ECO "D30"]

1. c4 e6 2. d4 d5 3. a3 Nf6 4. Nc3 dxc4 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e4 Nf6 4. Nc3 e6 *

[ECO "C11"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. f4 dxe4 *

[ECO "C00"]

1. e4 e6 2. Nf3 d5 3. Nc3 dxe4 4. Nxe4 Nf6 *

[ECO "C00"]

1. e4 e6 2. Nc3 d5 3. f4 dxe4 4. Nxe4 Nf6 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nc3 d5 4. e3 Bg7 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 Nf6 4. Nf3 dxe4 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 d5 4. Bxd5 Nf6 *

[ECO "C31"]

1. e4 e5 2. f4 d5 3. exd5 exf4 4. Bc4 Nf6 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Be2 d5 4. exd5 Nf6 *

[ECO "C43"]

1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. Bc4 d5 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Nf3 e4 4. Nh4 d5 *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Be3 Nf6 *

[ECO "A00"]

1. h3 e5 2. e3 Nf6 3. d4 exd4 4. exd4 d5 *

[ECO "E00"]

1. d4 e6 2. c4 Nf6 3. a3 d5 4. cxd5 exd5 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Bc4 Bc5 4. d3 d6 *

[ECO "C00"]

1. e4 e6 2. f4 d5 3. exd5 exd5 4. Nf3 Nf6 *

[ECO "A17"]

1. c4 Nf6 2. Nc3 e6 3. g3 d5 4. cxd5 exd5 *

[ECO "C00"]

1. e4 e6 2. Nf3 d5 3. exd5 exd5 4. Be2 Nf6 *

[ECO "A00"]

1. g3 e5 2. c4 Nf6 3. Nf3 d5 4. Nxe5 dxc4 *

[ECO "A15"]

1. c4 Nf6 2. g3 e5 3. Bg2 d5 4. Nf3 dxc4 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e4 e5 4. Nf3 Nf6 *

[ECO "A41"]

1. d4 d6 2. Bg5 Nf6 3. Bxf6 exf6 4. c4 d5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d6 3. Bxf6 exf6 4. e3 d5 *

[ECO "C29"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. exd5 Nxd5 *

[ECO "A20"]

1. c4 e5 2. b3 Nf6 3. Nc3 d5 4. cxd5 Nxd5 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 *

[ECO "A52"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Bc5 *

[ECO "A22"]

1. c3 e5 2. c4 Nf6 3. Nc3 d5 4. cxd5 Nxd5 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. d3 d5 4. cxd5 Nxd5 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 d5 4. cxd5 Nxd5 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Bc4 Nxe4 4. O-O d5 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. Nc3 f5 4. d3 Nf6 *

[ECO "A00"]

1. g3 e5 2. c4 d6 3. Bg2 f5 4. d4 Nf6 *

[ECO "A13"]

1. c4 e6 2. Nf3 f5 3. b3 Nf6 4. Bb2 d6 *

[ECO "A04"]

1. Nf3 f5 2. c4 Nf6 3. Nc3 d6 4. g3 e6 *

[ECO "A04"]

1. Nf3 f5 2. g3 Nf6 3. Bg2 d6 4. O-O e6 *

[ECO "A80"]

1. d4 f5 2. Nf3 d6 3. c3 Nf6 4. Bg5 e6 *

[ECO "A00"]

1. d3 e6 2. Nf3 f5 3. c4 Nf6 4. Nc3 Bb4 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. c4 e6 4. Nc3 d5 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nc3 d5 4. Nh3 Nf6 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. e3 Nf6 4. Bd3 d5 *

[ECO "A90"]

1. c4 e6 2. d4 f5 3. g3 Nf6 4. Bg2 d5 *

[ECO "A80"]

1. d4 f5 2. h3 Nf6 3. Nf3 e6 4. g4 d5 *

[ECO "A80"]

1. d4 f5 2. Nf3 e6 3. b3 Nf6 4. e3 d5 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Nh3 e6 4. Nc3 d5 *

[ECO "A04"]

1. Nf3 f5 2. e3 d5 3. d4 e6 4. Bd3 Nf6 *

[ECO "B27"]

1. Nf3 g6 2. e4 c5 3. d4 cxd4 4. Qxd4 Nf6 *

[ECO "A04"]

1. Nf3 f5 2. g3 Nf6 3. Bg2 e6 4. d3 d5 *

[ECO "A00"]

1. g3 f5 2. Nf3 Nf6 3. Bg2 d5 4. O-O e6 *

[ECO "A18"]

1. c4 e6 2. Nc3 Nf6 3. e4 d5 4. e5 Nfd7 *

[ECO "C00"]

1. e4 e6 2. b3 d5 3. Bb2 Nf6 4. e5 Nfd7 *

[ECO "B02"]

1. e4 Nf6 2. d3 d5 3. e5 Nfd7 4. Nf3 e6 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 d5 3. e5 Nfd7 4. e6 fxe6 *

[ECO "A24"]

1. c4 e5 2. g3 Nf6 3. Nc3 g6 4. d4 exd4 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. Bg5 Ne4 4. Bf4 e5 *

[ECO "A08"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nf6 4. c4 d4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. g3 f5 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Bg5 h6 4. Bh4 g5 *

[ECO "A46"]

1. d4 Nf6 2. Bg5 e6 3. Nf3 h6 4. Bh4 g5 *

[ECO "C00"]

1. e4 e6 2. Qe2 Nf6 3. e5 Nd5 4. c4 Nb6 *

[ECO "C00"]

1. d4 e6 2. e4 Nf6 3. e5 Nd5 4. c4 Nb6 *

[ECO "C27"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 Nxe4 4. Qg4 Nd6 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Bc4 Nxe4 4. d3 Nd6 *

[ECO "C00"]

1. e4 e6 2. Qe2 Nf6 3. e5 Nd5 4. c4 Nb4 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 e6 4. Bc4 Nxc3 *

[ECO "C00"]

1. e4 e6 2. Qe2 Nf6 3. e5 Nd5 4. c4 Nf4 *

[ECO "A81"]

1. d4 f5 2. g3 d6 3. Bg2 Nf6 4. Nc3 d5 *

[ECO "A40"]

1. d4 Nc6 2. d5 Nb8 3. Nf3 e6 4. e4 Nf6 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 Nc6 3. d4 e5 4. d5 Nb8 *

[ECO "C34"]

1. e4 e5 2. f4 exf4 3. Nf3 Ne7 4. d4 Ng6 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 e6 3. e5 Nd5 4. Nxd5 exd5 *

[ECO "C43"]

1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ng4 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. Bg5 Nf6 4. c4 h6 *

[ECO "C40"]

1. e4 e5 2. Nf3 f5 3. d4 fxe4 4. Nxe5 Nf6 *

[ECO "A84"]

1. c4 f5 2. d4 e6 3. g4 Nf6 4. gxf5 exf5 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nf3 Nf6 4. Bf4 g6 *

[ECO "A90"]

1. d4 e6 2. g3 f5 3. Bg2 Nf6 4. c4 g6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. d4 exd4 4. Qxd4 Nf6 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. h3 g6 4. Nc3 e6 *

[ECO "A10"]

1. c4 f5 2. g3 Nf6 3. Bg2 g6 4. b4 e5 *

[ECO "C00"]

1. e4 e6 2. Qe2 Nf6 3. e5 Nd5 4. c4 Ne7 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Nf3 g6 4. b3 Ne4 *

[ECO "A04"]

1. Nf3 f5 2. d4 Nf6 3. Bg5 Ne4 4. h4 g6 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bf4 Nf6 4. e3 g5 *

[ECO "A00"]

1. b4 e5 2. b5 a6 3. e3 axb5 4. Bxb5 c6 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. g3 cxd4 4. Nxd4 a6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. g3 g6 *

[ECO "B21"]

1. e4 c5 2. f4 d6 3. Nf3 g6 4. Nc3 a6 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. dxe5 dxe5 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. c4 d6 4. Nc3 e5 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 e5 4. Nd5 a6 *

[ECO "B20"]

1. e4 c5 2. b3 e6 3. Nf3 a6 4. c4 d6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. b3 a6 4. Bb2 d5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. g3 d5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d3 d5 *

[ECO "A04"]

1. Nf3 c5 2. b3 d5 3. e3 a6 4. Ba3 e6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. g3 e6 4. Bg2 a6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. c4 a6 4. g3 dxc4 *

[ECO "A00"]

1. b4 e5 2. b5 a6 3. e3 axb5 4. Bxb5 e4 *

[ECO "B54"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 g6 *

[ECO "D22"]

1. d4 d5 2. c4 dxc4 3. e3 a6 4. Nf3 b5 *

[ECO "A04"]

1. Nf3 c5 2. c4 e6 3. Nc3 a6 4. g3 b5 *

[ECO "B22"]

1. e4 c5 2. c3 a6 3. d4 e6 4. g3 b5 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. g3 a6 4. Bg2 b5 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. g3 b5 4. a3 e6 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. c4 b6 4. Nc3 e6 *

[ECO "C00"]

1. e4 e6 2. Nc3 c5 3. Nge2 a6 4. g3 b6 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. Nc3 a6 4. d3 b5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. a3 d5 4. cxd5 exd5 *

[ECO "C00"]

1. e4 e6 2. d3 b6 3. Nf3 d5 4. exd5 exd5 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 Nd7 4. Qb3 Rb8 *

[ECO "A04"]

1. Nf3 b6 2. e4 e6 3. d4 h5 4. Bd3 h4 *

[ECO "A18"]

1. c4 e6 2. Nc3 Nf6 3. e4 b6 4. e5 Ng8 *

[ECO "A40"]

1. d4 e6 2. g3 f5 3. Nf3 b5 4. a4 b4 *

[ECO "A13"]

1. c4 e6 2. Nc3 c5 3. Nf3 b6 4. d4 cxd4 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. g3 b6 4. d5 exd5 *

[ECO "A09"]

1. Nf3 d5 2. c4 c6 3. e3 e6 4. Nc3 b6 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. d4 c6 4. e3 b6 *

[ECO "A04"]

1. Nf3 c5 2. c4 e6 3. d4 cxd4 4. Nxd4 e5 *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. Nf3 f5 4. Be2 fxe4 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. c3 e5 4. Bc4 Qc7 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. d4 e4 4. Nc3 c6 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nc3 h6 4. Bh4 c6 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bh4 g5 4. Bg3 c5 *

[ECO "A82"]

1. d4 f5 2. e4 fxe4 3. Bg5 d5 4. Nc3 c6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 g6 4. c4 f6 *

[ECO "B12"]

1. e4 c6 2. d4 g6 3. Nf3 d5 4. e5 f6 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 g6 *

[ECO "B15"]

1. d4 g6 2. e4 c6 3. Nc3 d5 4. Bf4 dxe4 *

[ECO "B10"]

1. e4 c6 2. d3 g6 3. Nc3 d5 4. Nf3 d4 *

[ECO "B10"]

1. e4 c6 2. Nc3 g6 3. g3 d5 4. Bg2 dxe4 *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. O-O Nf6 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. g3 g6 4. c3 d5 *

[ECO "B13"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Nc3 g6 *

[ECO "A40"]

1. d4 g6 2. e4 c6 3. c3 d5 4. exd5 cxd5 *

[ECO "B10"]

1. e4 c6 2. Nf3 g6 3. d4 d5 4. exd5 cxd5 *

[ECO "A00"]

1. g3 g6 2. c4 c6 3. Bg2 d5 4. cxd5 cxd5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. f3 g6 4. Nc3 h5 *

[ECO "B10"]

1. e4 c6 2. Nf3 g6 3. d4 d5 4. e5 h5 *

[ECO "D00"]

1. d4 d5 2. Bg5 c6 3. e3 h6 4. Bf4 g5 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 h6 4. Bd3 dxe4 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. Nc3 h6 4. exd5 cxd5 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Bc4 e6 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. f3 dxe4 4. Nc3 exf3 *

[ECO "B21"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 d6 *

[ECO "B10"]

1. e4 c6 2. c4 d6 3. Nc3 e5 4. d4 g6 *

[ECO "B20"]

1. e4 c5 2. c4 g6 3. Nf3 d6 4. Nc3 e5 *

[ECO "A13"]

1. c4 e6 2. d4 c5 3. d5 d6 4. Nc3 g6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 d5 4. Qe2 g6 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 h6 4. c3 c5 *

[ECO "C00"]

1. d4 e6 2. e4 h6 3. Nf3 d5 4. e5 c5 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 e6 *

[ECO "C31"]

1. e4 e5 2. f4 d5 3. exd5 e4 4. Bb5+ c6 *

[ECO "A45"]

1. d4 Nf6 2. g3 d5 3. Nf3 Bf5 4. Bg2 e6 *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bb5+ c6 *

[ECO "A00"]

1. Nc3 d5 2. Nf3 d4 3. Nb5 e5 4. Nxe5 c6 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. c5 e5 4. e3 exd4 *

[ECO "B10"]

1. e4 c6 2. c4 e6 3. Nf3 d5 4. exd5 exd5 *

[ECO "B10"]

1. e4 c6 2. Nc3 d5 3. g3 e5 4. Nf3 d4 *

[ECO "B10"]

1. e4 c6 2. Nc3 d5 3. d3 e5 4. Nf3 d4 *

[ECO "B10"]

1. e4 c6 2. d3 d5 3. Qe2 dxe4 4. dxe4 e5 *

[ECO "A20"]

1. c4 e5 2. g3 c6 3. d4 d6 4. Nc3 exd4 *

[ECO "A44"]

1. d4 c5 2. d5 e5 3. e4 d6 4. f4 exf4 *

[ECO "A13"]

1. c4 e6 2. d4 c5 3. d5 d6 4. e4 e5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bc5 3. g3 Nf6 4. Bg2 O-O *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Be2 d6 4. d4 cxd4 *

[ECO "C00"]

1. e4 e6 2. Nf3 d5 3. Nc3 d4 4. Nb5 c5 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. e3 e6 4. Bxc4 c5 *

[ECO "A13"]

1. Nf3 e6 2. c4 d5 3. b3 c5 4. e3 d4 *

[ECO "A30"]

1. c4 c5 2. g3 e6 3. Bg2 d5 4. Nf3 dxc4 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. e3 c5 4. Nc3 dxc4 *

[ECO "D30"]

1. d4 e6 2. c4 d5 3. g3 dxc4 4. e3 c5 *

[ECO "B21"]

1. e4 c5 2. f4 d5 3. Nc3 dxe4 4. Nxe4 e6 *

[ECO "B23"]

1. e4 e6 2. Nc3 c5 3. g3 d5 4. Bg2 dxe4 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. g3 d5 4. d3 dxe4 *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. Bg5 Bg7 4. e3 O-O *

[ECO "A13"]

1. c4 e6 2. d4 c5 3. Nf3 cxd4 4. Nxd4 d5 *

[ECO "D32"]

1. d4 e6 2. c4 d5 3. Nc3 c5 4. Nf3 cxd4 *

[ECO "A04"]

1. Nf3 c5 2. Nc3 d5 3. d4 cxd4 4. Nxd4 e6 *

[ECO "A40"]

1. d4 e6 2. h4 c5 3. Nf3 d5 4. Nc3 cxd4 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. g3 c5 4. c3 cxd4 *

[ECO "B10"]

1. e4 c6 2. c4 e6 3. Nf3 d5 4. cxd5 cxd5 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 c5 4. Nc3 cxd4 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 c5 4. c4 d4 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 c5 4. Nc3 d4 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. b3 c5 4. cxd5 exd5 *

[ECO "E11"]

1. d4 Nf6 2. Nf3 e6 3. c4 Bb4+ 4. Nbd2 d6 *

[ECO "A30"]

1. c4 c5 2. g3 e6 3. Bg2 d5 4. cxd5 exd5 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 e5 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. g3 c6 4. b3 f5 *

[ECO "A07"]

1. Nf3 d5 2. g3 e6 3. Bg2 f5 4. c4 c6 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nf3 d5 4. Bf4 c6 *

[ECO "D30"]

1. d4 e6 2. c4 d5 3. e3 c6 4. Bd3 f5 *

[ECO "A40"]

1. d4 e6 2. Nf3 d5 3. Nc3 f5 4. Bf4 c6 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. g3 c6 4. Bg2 f5 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 c6 4. Ngf3 f5 *

[ECO "A80"]

1. d4 f5 2. g4 d5 3. g5 c5 4. dxc5 e6 *

[ECO "A80"]

1. d4 f5 2. g4 d5 3. g5 c5 4. e3 e6 *

[ECO "D00"]

1. d4 d5 2. Bg5 f6 3. Bh4 c5 4. dxc5 e6 *

[ECO "A08"]

1. g3 d5 2. Nf3 c5 3. Bg2 f6 4. d3 e5 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 f6 4. e3 dxe3 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. g3 g6 4. b4 f6 *

[ECO "A82"]

1. d4 f5 2. e4 fxe4 3. Nc3 g6 4. Nxe4 d5 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. d4 g6 *

[ECO "A04"]

1. Nf3 d6 2. c4 e5 3. d4 exd4 4. Nxd4 g6 *

[ECO "A00"]

1. g3 d5 2. d3 e5 3. Bg2 g6 4. f4 exf4 *

[ECO "A31"]

1. c4 c5 2. Nf3 Nf6 3. d4 cxd4 4. Nxd4 b6 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. g3 g6 4. cxd5 exd5 *

[ECO "A20"]

1. c4 e5 2. g3 g6 3. d4 d6 4. dxe5 dxe5 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. c3 d3 4. Bxd3 d6 *

[ECO "A06"]

1. Nf3 d5 2. Nc3 d4 3. Ne4 e5 4. e3 dxe3 *

[ECO "C00"]

1. e4 e6 2. c4 d5 3. exd5 exd5 4. d4 dxc4 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. g3 f5 4. d4 e4 *

[ECO "A40"]

1. d4 Nc6 2. c4 e5 3. d5 Nb8 4. Nf3 e4 *

[ECO "C43"]

1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ng8 *

[ECO "A20"]

1. c4 e5 2. g3 g6 3. d4 exd4 4. Qxd4 f6 *

[ECO "A04"]

1. Nf3 d6 2. d4 Nf6 3. c3 Bf5 4. Qb3 Qc8 *

[ECO "D11"]

1. d4 d5 2. c4 c6 3. Nf3 e6 4. Bg5 Nf6 *

[ECO "D02"]

1. Nf3 Nc6 2. d4 d5 3. c3 Bf5 4. Qb3 Rb8 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. d3 Nc6 4. Bg2 Rb8 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 e6 3. g3 Nc6 4. Bg2 Rb8 *

[ECO "E00"]

1. c4 Nf6 2. d4 e6 3. g3 Nc6 4. Bg2 Rb8 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 e5 4. Nd5 Rb8 *

[ECO "C00"]

1. e4 e6 2. Nc3 Nc6 3. d4 Bb4 4. Bb5 Qh4 *

[ECO "C25"]

1. e4 e5 2. Nc3 Bc5 3. Bc4 Nc6 4. Qg4 Qf6 *

[ECO "C23"]

1. e4 e5 2. Bc4 Nc6 3. d3 Bc5 4. Qg4 Qf6 *

[ECO "C40"]

1. e4 e5 2. Nf3 Qf6 3. Nc3 Nc6 4. Bc4 Bc5 *

[ECO "C53"]

1. Nf3 Nc6 2. e4 e5 3. Bc4 Bc5 4. c3 Qf6 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e3 c5 4. Bxc4 cxd4 *

[ECO "C40"]

1. e4 e5 2. Nf3 Qf6 3. Nc3 Nc6 4. Bc4 Bd6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 Qe7 4. g3 Nc6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Qb6 4. Nc3 Nf6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Qb6 4. a4 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. e3 Qb6 4. Nc3 Nc6 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 Nf6 4. e4 Qb6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. g3 Nc6 4. Bg2 Qb6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. dxc5 Qa5+ 4. Nd2 Nc6 *

[ECO "A43"]

1. d4 c5 2. dxc5 Qa5+ 3. Nc3 Nf6 4. Bd2 Nc6 *

[ECO "B27"]

1. e4 c5 2. Nf3 Qa5 3. c3 Nc6 4. Bc4 Nf6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. O-O Bf5 *

[ECO "D11"]

1. Nf3 d5 2. c4 c6 3. d4 e6 4. cxd5 exd5 *

[ECO "A30"]

1. c4 c5 2. b3 Nf6 3. Nc3 Nc6 4. e4 Qa5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. d5 Qb6 4. Nc3 Na6 *

[ECO "B12"]

1. e4 c6 2. d4 Na6 3. Nf3 Nf6 4. Nc3 Qb6 *

[ECO "D00"]

1. d4 d5 2. e3 Nf6 3. c4 Nc6 4. cxd5 Qxd5 *

[ECO "B00"]

1. e4 Nc6 2. d4 d5 3. exd5 Qxd5 4. Nf3 Nf6 *

[ECO "C40"]

1. e4 e5 2. Nf3 Qf6 3. Nc3 Nc6 4. Bc4 Nge7 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Bb5 Qe7 *

[ECO "C40"]

1. e4 e5 2. Nf3 Qe7 3. Nc3 Nf6 4. Bc4 Nc6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. d4 Qe7 *

[ECO "A04"]

1. Nf3 d6 2. d4 Nf6 3. c3 Nc6 4. e4 Qd7 *

[ECO "A43"]

1. d4 c5 2. d5 e6 3. e4 exd5 4. exd5 d6 *

[ECO "B20"]

1. e4 c5 2. Na3 Nc6 3. Bb5 Qc7 4. Nf3 Nf6 *

[ECO "A04"]

1. Nf3 c5 2. b3 Nc6 3. e3 Nf6 4. Bb2 Qc7 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Qb6 4. Nc3 a6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Qb6 4. Bxc6 bxc6 *

[ECO "B40"]

1. Nf3 c5 2. e4 e6 3. c3 Nc6 4. Bb5 Qb6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bc4 e6 4. Nf3 Qb6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Nc3 Qa5 4. Be2 Nc6 *

[ECO "B20"]

1. e4 c5 2. d3 Nc6 3. Nf3 g6 4. Be3 Qb6 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c3 Qa5 4. Bc4 Nc6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Na5 4. c3 Qb6 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. Bc4 Bg7 4. c3 Nc6 *

[ECO "A04"]

1. Nf3 c5 2. g3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 *

[ECO "B30"]

1. Nf3 c5 2. e4 Nc6 3. Bb5 Qa5 4. Nc3 Nd4 *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. Qh5 Nc6 4. Bc4 Qe7 *

[ECO "D00"]

1. d4 d5 2. Bf4 c5 3. c3 Nc6 4. Nf3 Qb6 *

[ECO "D00"]

1. d4 d5 2. Bf4 c5 3. e4 Nc6 4. exd5 Qxd5 *

[ECO "B22"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. Na3 Nc6 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. d4 Qa5+ *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Na6 4. c3 Qb6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. c5 Nc6 4. Qa4 Qd5 *

[ECO "B00"]

1. e4 Nc6 2. d4 d6 3. f4 d5 4. exd5 Qxd5 *

[ECO "C15"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Ne2 Nc6 *

[ECO "B01"]

1. e4 d5 2. d3 dxe4 3. dxe4 Qxd1+ 4. Kxd1 Nc6 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. d4 Nc6 4. dxe5 Qe7 *

[ECO "C40"]

1. e4 e5 2. Nf3 Qe7 3. Bc4 Nc6 4. O-O d6 *

[ECO "D07"]

1. c4 Nc6 2. d4 d5 3. cxd5 Qxd5 4. Nf3 e6 *

[ECO "A20"]

1. c4 e5 2. g3 d5 3. cxd5 Qxd5 4. Nf3 Nc6 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 d6 4. Bb5 Qg5 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. e4 Nc6 4. Bd3 Qg5 *

[ECO "A40"]

1. d4 Na6 2. c4 e6 3. Nc3 d5 4. cxd5 Qxd5 *

[ECO "C00"]

1. e4 e6 2. Bb5 Qg5 3. Bf1 Qa5 4. Nc3 Nc6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Qf6 *

[ECO "E15"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Nc6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 Qe7 4. Bc4 f5 *

[ECO "A40"]

1. d4 e5 2. dxe5 Nc6 3. Nf3 Qe7 4. Nc3 Nxe5 *

[ECO "C40"]

1. e4 e5 2. Nf3 Qe7 3. Nc3 Nc6 4. Bc4 Na5 *

[ECO "B22"]

1. e4 c5 2. c3 d5 3. e5 Nc6 4. d4 Qc7 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 e6 4. Bb5 Qc7 *

[ECO "C25"]

1. e4 e5 2. Nc3 Bc5 3. Bc4 Nc6 4. Qg4 Kf8 *

[ECO "A40"]

1. c4 e6 2. d4 Bb4+ 3. Bd2 a5 4. Nf3 Nc6 *

[ECO "A20"]

1. c4 e5 2. g3 Bc5 3. Nc3 Nc6 4. Bg2 a5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 a5 4. g3 Nc6 *

[ECO "B32"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Be2 Nf6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Qb3 Nc6 4. Nf3 a5 *

[ECO "C64"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. c3 a6 *

[ECO "A00"]

1. g3 e5 2. Bg2 Nc6 3. c4 Bc5 4. Nc3 a6 *

[ECO "A00"]

1. a3 a6 2. e4 e5 3. Nc3 Nc6 4. Nf3 Bc5 *

[ECO "A04"]

1. Nf3 b6 2. b3 Nc6 3. e4 e5 4. Bb2 Bd6 *

[ECO "A01"]

1. b3 b6 2. g3 g6 3. Bg2 Nc6 4. Nf3 Bg7 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. e4 c5 4. g3 Nc6 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. e4 c5 4. f4 Nc6 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. Nf3 c5 4. g3 Nc6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Nc3 c5 4. e3 Nc6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 Nc6 4. Nxc4 Nf6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 e6 4. Qe2 Be7 *

[ECO "C00"]

1. c4 e6 2. e4 c5 3. Nc3 Nc6 4. g3 Be7 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. Nf3 Nc6 4. b3 Be7 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. Nf3 Nc6 4. c3 Be7 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. c3 e6 4. d3 Be7 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. Nf3 Nc6 4. d3 Be7 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. f4 e6 4. Nf3 Be7 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 e5 4. a3 Be7 *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. Nf3 Nc6 4. b3 Be7 *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. Nc3 Nc6 4. Nf3 Be7 *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 f5 4. g3 Nf6 *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. Nf3 Nc6 4. g3 Be7 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 g6 4. Nge2 Bg7 *

[ECO "B31"]

1. Nf3 c5 2. e4 g6 3. Bc4 Nc6 4. Bb5 Bg7 *

[ECO "B20"]

1. e4 c5 2. a3 g6 3. h4 Nc6 4. h5 Bg7 *

[ECO "B20"]

1. e4 c5 2. g3 g6 3. Nc3 Bg7 4. Bc4 Nc6 *

[ECO "A00"]

1. a3 g6 2. e4 c5 3. Bc4 Nc6 4. Nf3 Bg7 *

[ECO "B23"]

1. e4 c5 2. Nc3 g6 3. Bc4 Bg7 4. f4 Nc6 *

[ECO "B21"]

1. e4 c5 2. f4 g6 3. Bc4 Nc6 4. Nf3 Bg7 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. Bc4 Nc6 4. d4 Bg7 *

[ECO "A34"]

1. c4 c5 2. Nc3 g6 3. e4 Bg7 4. Nge2 Nc6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. g3 Nc6 4. Bg2 e5 *

[ECO "A34"]

1. c4 c5 2. Nc3 g6 3. e4 Bg7 4. Bd3 Nc6 *

[ECO "A30"]

1. c4 c5 2. Nf3 g6 3. e4 Bg7 4. Be2 Nc6 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. b3 g6 4. Bb2 Bg7 *

[ECO "A34"]

1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Rb1 Nc6 *

[ECO "A04"]

1. Nf3 c5 2. c4 g6 3. g3 Nc6 4. Bh3 Bg7 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. e3 g6 4. d4 Bg7 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 g6 4. h4 Bg7 *

[ECO "B27"]

1. e3 g6 2. e4 c5 3. Nf3 Bg7 4. Nc3 Nc6 *

[ECO "B24"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. h3 Bg7 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c3 Bg7 4. h3 Nc6 *

[ECO "D02"]

1. Nf3 Nf6 2. d4 d5 3. b4 Bf5 4. Nh4 Bd7 *

[ECO "A00"]

1. g3 g6 2. e4 c5 3. Bg2 Bg7 4. Na3 Nc6 *

[ECO "B21"]

1. e4 c5 2. f4 Nc6 3. Nf3 g6 4. g3 Bg7 *

[ECO "A00"]

1. g3 c5 2. Bg2 Nc6 3. d3 g6 4. f4 Bg7 *

[ECO "A00"]

1. g3 c5 2. Bg2 g6 3. f4 Bg7 4. Nf3 Nc6 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. Nc3 c5 4. d3 Nc6 *

[ECO "B20"]

1. e4 c5 2. a4 g6 3. Nc3 Nc6 4. Nf3 Bg7 *

[ECO "A30"]

1. c4 c5 2. g3 Nc6 3. Bg2 g5 4. Nc3 Bg7 *

[ECO "B12"]

1. e4 c6 2. d4 Na6 3. Nf3 g6 4. Nc3 Bg7 *

[ECO "B10"]

1. e4 c6 2. Nf3 g6 3. d4 Bg7 4. Be2 Na6 *

[ECO "B10"]

1. e4 c6 2. d3 g6 3. d4 Bg7 4. Nf3 Na6 *

[ECO "A17"]

1. c4 Nf6 2. Nc3 e6 3. e3 d5 4. d4 c6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. e4 Bb7 4. Bd3 f5 *

[ECO "B20"]

1. e4 c5 2. Ne2 g6 3. d4 Bg7 4. dxc5 Na6 *

[ECO "A04"]

1. Nf3 g6 2. d4 Bg7 3. g3 c5 4. dxc5 Na6 *

[ECO "A40"]

1. d4 g6 2. g3 c5 3. dxc5 Bg7 4. Nd2 Na6 *

[ECO "A40"]

1. d4 g6 2. Nf3 Na6 3. e4 Bg7 4. Be2 c5 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. c4 Be7 4. g3 Nc6 *

[ECO "C00"]

1. e4 e6 2. Qe2 Be7 3. Nf3 d5 4. d3 Nc6 *

[ECO "C00"]

1. e4 e6 2. Qe2 Be7 3. g3 Nc6 4. Nf3 d5 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Be7 4. e5 Nc6 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Nc3 d6 4. Nf3 Be7 *

[ECO "A17"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 Bb4 4. g3 O-O *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. d4 Nc6 4. Nf3 Be7 *

[ECO "C25"]

1. e4 e5 2. Nc3 d6 3. d3 Nc6 4. Nf3 Be7 *

[ECO "B00"]

1. e4 d6 2. f4 e5 3. d3 Nc6 4. Nc3 Be7 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. g3 Nc6 4. Nf3 Be7 *

[ECO "A00"]

1. g3 d5 2. Bg2 g6 3. d3 Bg7 4. Nd2 Nc6 *

[ECO "B00"]

1. e4 Nc6 2. d4 d5 3. e5 g6 4. Nc3 Bg7 *

[ECO "B06"]

1. e4 g6 2. Nc3 Bg7 3. h4 Nc6 4. h5 d6 *

[ECO "A04"]

1. Nf3 g6 2. d4 Bg7 3. c4 d6 4. g3 Nc6 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. c4 Nc6 4. Ne2 d6 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. d4 d6 4. Nc3 Nc6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Bb4 3. g3 Nf6 4. d3 O-O *

[ECO "B00"]

1. e4 Nc6 2. Nc3 g6 3. d4 Bg7 4. Be3 d6 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nf3 d6 4. Bd3 Nc6 *

[ECO "A04"]

1. Nf3 g6 2. d4 Bg7 3. e4 d6 4. Be2 Nc6 *

[ECO "A00"]

1. g3 g6 2. f4 Bg7 3. Nf3 d6 4. Nc3 Nc6 *

[ECO "A40"]

1. d4 g6 2. Nf3 Na6 3. e4 d6 4. Nc3 Bg7 *

[ECO "D00"]

1. d4 d5 2. g3 Nc6 3. Nf3 e6 4. Bh3 Bb4+ *

[ECO "D31"]

1. c4 e6 2. Nc3 d5 3. d4 Bb4 4. Qa4+ Nc6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nc6 3. c4 e5 4. dxe5 Bb4+ *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 Nc6 4. Nc3 Bb4 *

[ECO "A00"]

1. g4 e5 2. d3 Nc6 3. Bg2 d5 4. g5 Bd6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 g6 3. b3 Bg7 4. Bb2 O-O *

[ECO "A00"]

1. h3 e5 2. e3 Nc6 3. d4 d5 4. Nf3 Bd6 *

[ECO "A13"]

1. c4 e6 2. d4 Nc6 3. Nf3 d5 4. Bd2 Bd6 *

[ECO "A40"]

1. d4 e6 2. Nc3 d5 3. Bf4 Nc6 4. e3 Bd6 *

[ECO "A40"]

1. d4 e6 2. Nf3 Nc6 3. g3 d5 4. Bf4 Bd6 *

[ECO "D00"]

1. d4 d5 2. a3 Nc6 3. Bf4 e6 4. e3 Bd6 *

[ECO "C64"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. d3 d6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bc5 3. e3 Nc6 4. g3 d6 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Bg2 Bc5 4. e3 d6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. h3 Bc5 4. Nc3 d6 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Bc5 4. Be2 d6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. a3 g6 4. Nc3 Bg7 *

[ECO "A00"]

1. g3 e5 2. Bg2 Nc6 3. e4 Bc5 4. Nf3 d6 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. e4 Bc5 4. Na4 d6 *

[ECO "C25"]

1. e4 e5 2. Nc3 Nc6 3. f4 Bb4 4. Nf3 d6 *

[ECO "C23"]

1. e4 e5 2. Bc4 Nc6 3. Nc3 Bb4 4. d3 d6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Nc3 Nc6 4. Nf3 d6 *

[ECO "A00"]

1. b4 e5 2. b5 d5 3. Bb2 Nd7 4. e3 Bd6 *

[ECO "A41"]

1. d4 d6 2. c4 e5 3. dxe5 Nd7 4. exd6 Bxd6 *

[ECO "D00"]

1. d4 d5 2. a3 e6 3. Nf3 Nd7 4. e3 Bd6 *

[ECO "C23"]

1. e4 e5 2. Bc4 Bc5 3. Nc3 d6 4. Na4 Nd7 *

[ECO "C25"]

1. e4 e5 2. Nc3 Bc5 3. Nf3 d6 4. Na4 Nd7 *

[ECO "E12"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. a3 Bd6 *

[ECO "C23"]

1. e4 e5 2. Bc4 d6 3. Nf3 Nd7 4. d4 Be7 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. d4 Nd7 4. Nf3 Be7 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. d4 Nd7 4. g3 Be7 *

[ECO "A00"]

1. Nc3 e5 2. Nf3 d6 3. d4 Nd7 4. e3 Be7 *

[ECO "A40"]

1. d4 e6 2. Nf3 d5 3. c4 Nd7 4. Bg5 Be7 *

[ECO "A10"]

1. c4 g6 2. Nf3 Bg7 3. d4 d6 4. Nc3 Nd7 *

[ECO "A41"]

1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. g3 Nd7 *

[ECO "A41"]

1. d4 d6 2. c4 g6 3. e4 Nd7 4. Be2 Bg7 *

[ECO "A41"]

1. d4 d6 2. Nf3 g6 3. c3 Bg7 4. Bf4 Nd7 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. d4 d6 4. e4 Nd7 *

[ECO "E00"]

1. d4 Nf6 2. g3 e6 3. c4 Be7 4. Nf3 b6 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Bg2 g6 4. d3 Bc5 *

[ECO "A04"]

1. Nf3 g5 2. Nxg5 e5 3. d3 Nc6 4. Nc3 Bb4 *

[ECO "A10"]

1. c4 g6 2. Nc3 Bg7 3. g3 e6 4. Nf3 Nc6 *

[ECO "C00"]

1. d4 e6 2. e4 g6 3. Bd3 Nc6 4. Nf3 Bg7 *

[ECO "C50"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 g6 4. c3 Bg7 *

[ECO "C20"]

1. a3 e5 2. e4 Nc6 3. Nc3 g6 4. Bc4 Bg7 *

[ECO "A10"]

1. c4 g6 2. e4 e5 3. Nf3 Bg7 4. Be2 Nc6 *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 g6 4. e3 Bg7 *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 g6 4. Rb1 Bg7 *

[ECO "A20"]

1. c3 e5 2. c4 g6 3. g3 Nc6 4. Nc3 Bg7 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 Nf6 4. Nf3 Be7 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. c4 Nc6 4. Ne2 e5 *

[ECO "B06"]

1. e4 g6 2. Nc3 Bg7 3. g3 e5 4. d3 Nc6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. d3 g6 4. g3 Bg7 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. Nf3 e5 4. e4 Nc6 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 g6 4. f4 Bg7 *

[ECO "A04"]

1. Nf3 Nc6 2. b3 e5 3. d3 g6 4. Bb2 Bg7 *

[ECO "A00"]

1. h3 h6 2. e4 e5 3. Nf3 Nc6 4. Bb5 Bc5 *

[ECO "C25"]

1. e4 e5 2. Nc3 Bc5 3. g3 Nc6 4. Bg2 h5 *

[ECO "C50"]

1. e4 e5 2. Bc4 Nc6 3. Nf3 h6 4. Qe2 Bd6 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 d6 *

[ECO "C64"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. c3 Bb6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bc5 3. Nf3 Nc6 4. Ne4 Bb6 *

[ECO "A40"]

1. c4 e6 2. d4 Bb4+ 3. Bd2 Bxd2+ 4. Nxd2 Nc6 *

[ECO "C25"]

1. e4 e5 2. Nc3 Be7 3. Nf3 Nc6 4. Bb5 Bf6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bb5 Bc5 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. d3 Bb4 4. Qb3 Bc5 *

[ECO "A20"]

1. c4 e5 2. Nf3 e4 3. Nd4 Nc6 4. Nc2 Bc5 *

[ECO "A00"]

1. Na3 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qa4 Bc5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Qb3 Nc6 4. Nd5 Bc5 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. g3 Bb4 4. Nd5 Bc5 *

[ECO "A15"]

1. c4 Nf6 2. g3 d6 3. Bg2 g6 4. Nc3 Bg7 *

[ECO "C00"]

1. e4 e6 2. Qe2 Nc6 3. Nc3 e5 4. d3 Bb4 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. e4 Nc6 4. Nf3 e5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bc5 3. e3 Nc6 4. Nf3 Bb4 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Qb3 Nc6 4. Nf3 Bxc3 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. g3 Bxc3 4. dxc3 Nc6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Qb3 Bxc3 4. Qxc3 Nc6 *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Bb4 4. g3 Bxc3 *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Bb4 4. a3 Bxc3 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Qb3 Nc6 4. a3 Bxc3 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. e4 Bc5 4. Na4 Bd4 *

[ECO "D35"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. g3 g6 4. Bg2 Bg7 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. f4 Nc6 4. Nf3 Bb4+ *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Bb4 4. d4 exd4 *

[ECO "A40"]

1. d4 Nc6 2. d5 Ne5 3. e4 e6 4. Nc3 Bc5 *

[ECO "C61"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Ba4 Bc5 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nc3 Bb4 4. Qb3 Nc6 *

[ECO "A00"]

1. b4 e5 2. Bb2 f6 3. e4 Bxb4 4. Bc4 Nc6 *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 f5 4. e4 Bc5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bc5 3. Nf3 Nc6 4. d3 f5 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. d3 Bc5 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. d4 Nc6 4. d5 Bb4+ *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. e3 f5 4. Nf3 Nf6 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. e3 Bb4 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Bg2 f5 4. Nc3 Bb4 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. d3 Bb4 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Bg2 f5 4. d3 Bb4+ *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f6 4. O-O Bd6 *

[ECO "A04"]

1. Nf3 f5 2. d3 Nc6 3. e4 e5 4. Be2 Be7 *

[ECO "A40"]

1. d4 e6 2. h4 Nc6 3. e4 Bb4+ 4. c3 Be7 *

[ECO "C00"]

1. e4 e6 2. d3 Bb4+ 3. c3 Be7 4. Nf3 Nc6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Qb3 Nc6 4. Nd5 Be7 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Be7 4. Nf3 Nc6 *

[ECO "E15"]

1. c4 Nf6 2. d4 e6 3. Nf3 b6 4. g3 c5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Be7 4. g3 Nc6 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. g3 Bb4 4. a3 Be7 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Qc2 Nc6 4. a3 Be7 *

[ECO "A20"]

1. c4 e5 2. e3 Nc6 3. a3 Be7 4. d4 exd4 *

[ECO "C25"]

1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. Nf3 Be7 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. d4 f5 4. c4 Nc6 *

[ECO "A81"]

1. d4 f5 2. g3 g6 3. Bg2 Bg7 4. c3 Nc6 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nc3 Nc6 4. e3 Bg7 *

[ECO "B00"]

1. e4 Nc6 2. Nc3 g6 3. d4 Bg7 4. d5 Bxc3+ *

[ECO "B00"]

1. e4 g5 2. d4 h6 3. Bc4 Nc6 4. Nc3 Bg7 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nc3 Nc6 4. d5 Nb4 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 Nc6 4. d5 Na5 *

[ECO "B00"]

1. e4 Nc6 2. Bb5 Nf6 3. d3 e6 4. Nf3 Bb4+ *

[ECO "A15"]

1. Nf3 Nf6 2. c4 Nc6 3. d4 e6 4. Bg5 Bb4+ *

[ECO "A05"]

1. Nf3 Nf6 2. g3 Nc6 3. d4 e6 4. Bg2 Bb4+ *

[ECO "A45"]

1. d4 Nf6 2. f3 e6 3. e4 Nc6 4. Nc3 Bb4 *

[ECO "A40"]

1. d4 e6 2. Nf3 Nc6 3. e4 Nf6 4. Bd3 Bb4+ *

[ECO "A13"]

1. c4 e6 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 Bb4 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Nd2 Nc6 *

[ECO "C20"]

1. e4 e5 2. a3 Bc5 3. Nc3 Nf6 4. Bc4 Nc6 *

[ECO "C00"]

1. d4 e6 2. e4 c5 3. c3 d5 4. exd5 exd5 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. a3 Bc5 *

[ECO "A01"]

1. b3 e5 2. c4 Nf6 3. Nc3 Bc5 4. Nf3 Nc6 *

[ECO "A01"]

1. b3 Nc6 2. Bb2 e5 3. c4 Nf6 4. Nc3 Bc5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bc5 3. e3 Nc6 4. Nge2 Nf6 *

[ECO "A20"]

1. c4 e5 2. h3 Nc6 3. Nc3 Nf6 4. Nf3 Bc5 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. e3 Nf6 4. Bd3 Bc5 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e4 Nf6 4. Nc3 Bc5 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Nd5 Nf6 *

[ECO "A00"]

1. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nf6 4. e3 Nc6 *

[ECO "A00"]

1. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nf6 4. a3 Nc6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. c4 c6 4. e3 f5 *

[ECO "C20"]

1. e4 e5 2. b3 Nf6 3. Nc3 Bb4 4. Bd3 Nc6 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Be2 Bb4 *

[ECO "C20"]

1. e4 e5 2. d3 Nc6 3. Nc3 Bb4 4. Ne2 Nf6 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. g3 Bb4+ *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e4 Bb4 4. Qc2 Nc6 *

[ECO "A20"]

1. c4 e5 2. h4 Nc6 3. Nc3 Nf6 4. Nf3 Bb4 *

[ECO "A20"]

1. c4 e5 2. e3 Nf6 3. b3 Nc6 4. Nc3 Bb4 *

[ECO "A20"]

1. c4 e5 2. b3 Nc6 3. Bb2 Nf6 4. Nc3 Bb4 *

[ECO "A20"]

1. c4 e5 2. h3 Nf6 3. e3 Nc6 4. Nc3 Bb4 *

[ECO "A22"]

1. c4 e5 2. g3 Nf6 3. Nc3 Bb4 4. Nh3 Nc6 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. c4 Nf6 4. Qb3 Qc8 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. d3 Nc6 4. Nc3 Bb4 *

[ECO "A22"]

1. c4 Nf6 2. Nc3 e5 3. d3 Bb4 4. Bd2 Nc6 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bd6 4. c3 Nf6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e4 Bd6 *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Bd6 4. g3 Nf6 *

[ECO "A40"]

1. d4 e6 2. c4 Nc6 3. Nc3 Nf6 4. Bg5 Be7 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Qc2 Nc6 4. Nf3 Be7 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. g3 Be7 4. Bg2 Nc6 *

[ECO "C00"]

1. e4 e6 2. Qe2 Nc6 3. Nf3 Be7 4. d3 Nf6 *

[ECO "C00"]

1. e4 e6 2. Qe2 Be7 3. g3 Nc6 4. Nf3 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. g3 e6 3. Bg2 c5 4. Nf3 Nc6 *

[ECO "C00"]

1. e4 e6 2. Qe2 Nc6 3. f4 Be7 4. d3 Nf6 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Bb5 Be7 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. c4 Be7 *

[ECO "C26"]

1. e4 e5 2. Nc3 Nf6 3. g3 Be7 4. Bg2 Nc6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. Qa4 Be7 *

[ECO "C00"]

1. e4 e6 2. Qe2 Nc6 3. Nf3 Bc5 4. Nc3 Nge7 *

[ECO "C00"]

1. e4 e6 2. Nc3 Nc6 3. g3 Bb4 4. Bg2 Nge7 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bb4 4. O-O Nge7 *

[ECO "C64"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. d3 Nge7 *

[ECO "C50"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Nc3 Nge7 *

[ECO "B20"]

1. e4 c5 2. d3 e6 3. Qe2 Nc6 4. Nf3 Nge7 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. g3 Bb4 4. Bg2 Nge7 *

[ECO "B00"]

1. e4 Nc6 2. Bb5 Nf6 3. d3 g6 4. Nf3 Bg7 *

[ECO "A00"]

1. e3 Nf6 2. f4 Nc6 3. Nf3 g6 4. Ne5 Bg7 *

[ECO "A04"]

1. Nf3 g6 2. c4 Nf6 3. g3 Bg7 4. Nc3 Nc6 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. c4 Nc6 4. Ne2 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. c3 g6 3. Bf4 Bg7 4. e3 Nc6 *

[ECO "A45"]

1. d4 Nf6 2. c3 g6 3. Bf4 Bg7 4. h3 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O Nc6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 a6 4. g3 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. g3 Nc6 4. Bg2 Nf6 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. c3 Nf6 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. d3 Nc6 4. g3 Nf6 *

[ECO "B20"]

1. e4 c5 2. Ne2 a6 3. d3 Nc6 4. Nf4 Nf6 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. a4 Nc6 4. Be2 Nf6 *

[ECO "A00"]

1. Nc3 Nc6 2. d4 d5 3. Bf4 a6 4. e3 Nf6 *

[ECO "D02"]

1. Nf3 d5 2. d4 a6 3. Nc3 Nf6 4. Bf4 Nc6 *

[ECO "A06"]

1. Nf3 d5 2. e3 Nf6 3. Nc3 a6 4. d4 Nc6 *

[ECO "D02"]

1. Nf3 Nc6 2. d4 d5 3. Nc3 Nf6 4. Qd3 a6 *

[ECO "D02"]

1. d4 d5 2. Nf3 a6 3. Nc3 Nc6 4. e4 Nf6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 a6 4. Bb2 Nc6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 a6 4. Be2 Nc6 *

[ECO "D11"]

1. d4 d5 2. c4 c6 3. Nf3 e6 4. Qc2 Nf6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Nc6 *

[ECO "A00"]

1. g3 d5 2. f4 Nf6 3. Nf3 Nc6 4. Bg2 a6 *

[ECO "A01"]

1. b3 Nf6 2. Bb2 d5 3. e3 a6 4. Be2 Nc6 *

[ECO "A41"]

1. d4 d6 2. e4 Nf6 3. f3 Nc6 4. Bb5 a6 *

[ECO "A10"]

1. c4 d6 2. Nc3 Nf6 3. d4 a6 4. Nf3 Nbd7 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 a6 4. e4 Nbd7 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Bb5+ Nbd7 4. Nc3 a6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. Bf4 Nbd7 4. Nc3 a6 *

[ECO "A20"]

1. c4 e5 2. e3 Nf6 3. a3 Nc6 4. Qc2 a5 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. Qa4 a5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. e3 Nc6 4. Bb5 a6 *

[ECO "A13"]

1. c4 e6 2. g3 Nf6 3. Bg2 a6 4. e4 Nc6 *

[ECO "A15"]

1. c4 Nf6 2. g3 e6 3. Bg2 a6 4. Nc3 Nc6 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 a6 3. Bf4 e6 4. e3 Nc6 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. Nc3 a6 *

[ECO "C70"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nge7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 b5 3. Bg5 Nc6 4. e3 a6 *

[ECO "A50"]

1. d4 b6 2. c4 Nf6 3. f3 Nc6 4. Nh3 d5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b6 3. d3 Nc6 4. Bg2 d5 *

[ECO "A46"]

1. d4 Nf6 2. Bg5 e6 3. Nf3 b6 4. e3 Nc6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Bf4 Nf6 4. e3 Nc6 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 d6 4. Bb5 Nf6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. e3 Nc6 4. Bd2 b6 *

[ECO "E12"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. a3 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. e3 e6 3. b3 b6 4. Nc3 Nc6 *

[ECO "A10"]

1. c4 b6 2. b3 e5 3. Bb2 Nc6 4. Nc3 Nf6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Qb3 b6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. a3 b6 *

[ECO "A50"]

1. d4 b6 2. c4 Nf6 3. f3 Nc6 4. Nc3 e5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. c3 e6 4. d4 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. d3 Nc6 4. Bf4 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. c3 e6 4. Bg2 Nc6 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 g6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. a4 b4 4. Bg2 Nc6 *

[ECO "B00"]

1. e4 Nc6 2. Bb5 Nf6 3. d3 Nd4 4. Ba4 b5 *

[ECO "B20"]

1. e4 c5 2. b3 b6 3. c4 Nc6 4. Bd3 Nf6 *

[ECO "A30"]

1. c4 c5 2. Nf3 b6 3. b3 Nc6 4. e3 Nf6 *

[ECO "A30"]

1. c4 c5 2. g3 Nc6 3. Bg2 b6 4. d4 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. e3 c6 4. Bd3 Nbd7 *

[ECO "A00"]

1. b4 d5 2. Bb2 Nf6 3. e3 c6 4. c4 Nbd7 *

[ECO "A11"]

1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. Qc2 Nbd7 *

[ECO "D11"]

1. d4 d5 2. c4 c6 3. Nd2 Nf6 4. Ngf3 Nbd7 *

[ECO "D11"]

1. d4 d5 2. Nf3 c6 3. c4 Nf6 4. Qc2 Nbd7 *

[ECO "C22"]

1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3 Nf6 *

[ECO "D04"]

1. Nf3 d5 2. d4 Nf6 3. e3 c6 4. Bd3 Nbd7 *

[ECO "A07"]

1. g3 d5 2. Nf3 c6 3. Bg2 Nd7 4. d4 Ngf6 *

[ECO "A01"]

1. b3 d5 2. Bb2 c6 3. e3 Nf6 4. Be2 Nbd7 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. c3 Nbd7 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 d6 3. Bg5 c6 4. Nbd2 Nbd7 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Bg5 Nbd7 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 d6 3. Nc3 Nbd7 4. g3 c6 *

[ECO "A50"]

1. d4 Nf6 2. c4 c6 3. Bf4 d6 4. Nc3 Nbd7 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Nge2 c6 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. Bb5+ Nd7 4. f4 Nf6 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 Nc6 3. d4 e5 4. d5 Ne7 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Bb5+ Nd7 4. a4 Nf6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. d4 Nd7 4. dxc5 Ngf6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 d6 3. d4 Nbd7 4. g3 c5 *

[ECO "A45"]

1. d4 Nf6 2. c3 d6 3. Nf3 Nbd7 4. Nbd2 c5 *

[ECO "B22"]

1. e4 c5 2. c3 d6 3. d4 Nf6 4. Bd3 Nbd7 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. f4 c5 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. d3 d6 4. f4 Nbd7 *

[ECO "B22"]

1. e4 c5 2. c3 d5 3. exd5 Nf6 4. Bb5+ Nbd7 *

[ECO "D04"]

1. d4 d5 2. Nf3 Nf6 3. e3 c5 4. dxc5 Nbd7 *

[ECO "D04"]

1. d4 Nf6 2. Nf3 d5 3. e3 Nbd7 4. Bd3 c5 *

[ECO "A83"]

1. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. Bg5 Nc6 *

[ECO "B27"]

1. e4 c5 2. Nf3 Nh6 3. Nc3 Nc6 4. h3 e6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. c3 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 c5 3. e3 Nc6 4. Bb5 e6 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. Bg5 c5 4. e3 Nc6 *

[ECO "B20"]

1. e4 c5 2. Bc4 e6 3. Nf3 Nc6 4. O-O Nf6 *

[ECO "A30"]

1. c4 c5 2. Nf3 e6 3. e4 Nc6 4. Be2 Nf6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 e6 3. Qc2 c5 4. e4 Nc6 *

[ECO "A19"]

1. c4 Nf6 2. Nc3 c5 3. e4 e6 4. f4 Nc6 *

[ECO "A30"]

1. c4 c5 2. b3 Nc6 3. g3 Nf6 4. Bg2 e6 *

[ECO "A30"]

1. c4 c5 2. b3 Nc6 3. e3 Nf6 4. Nc3 e6 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. g3 Nc6 4. Bg2 g6 *

[ECO "A30"]

1. c4 c5 2. b3 Nf6 3. Nc3 Nc6 4. Nf3 e6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 e6 3. Qc2 c5 4. Nc3 Nc6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 e6 3. Qc2 c5 4. d3 Nc6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. d3 Nc6 4. e3 e6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bf4 c5 4. e3 Nc6 *

[ECO "A40"]

1. d4 e6 2. h4 Nf6 3. Nf3 c5 4. e3 Nc6 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. e3 c5 4. g3 Nc6 *

[ECO "A40"]

1. d4 e6 2. a3 c5 3. c3 Nf6 4. Nf3 Nc6 *

[ECO "B23"]

1. e4 c5 2. Ne2 Nc6 3. Nbc3 e6 4. h3 Nf6 *

[ECO "B20"]

1. e4 c5 2. d3 Nc6 3. Nc3 e6 4. Nf3 Nf6 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 g6 4. d4 exd4 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Qe2 Nc6 4. c3 Nf6 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. d3 e6 4. g3 Nc6 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. d3 Nc6 4. f4 e6 *

[ECO "B21"]

1. e4 c5 2. f4 Nf6 3. d3 e6 4. Nh3 Nc6 *

[ECO "A02"]

1. f4 c5 2. Nf3 Nf6 3. b3 Nc6 4. e3 e6 *

[ECO "A04"]

1. Nf3 c5 2. b3 e6 3. g3 Nf6 4. Bb2 Nc6 *

[ECO "A00"]

1. g3 c5 2. Bg2 e6 3. d3 Nc6 4. Nc3 Nf6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 e5 *

[ECO "A43"]

1. d4 c5 2. dxc5 Nc6 3. Nc3 Nf6 4. e4 e5 *

[ECO "B23"]

1. e4 c5 2. Nc3 e5 3. Bc4 Nc6 4. d3 Nf6 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. d4 exd4 4. Qxd4 Nc6 *

[ECO "B20"]

1. e4 c5 2. c4 Nc6 3. Nc3 e5 4. d3 Nf6 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. d3 e5 4. c4 Nc6 *

[ECO "A00"]

1. h3 c5 2. c4 Nc6 3. Nf3 e5 4. e4 Nf6 *

[ECO "A15"]

1. c3 Nf6 2. c4 e5 3. e3 c5 4. Nc3 Nc6 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. e3 e5 4. Nge2 Nf6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 e5 4. h3 Nf6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. Nc3 e5 4. d3 Nf6 *

[ECO "B20"]

1. e4 c5 2. b3 e5 3. Bb2 Nc6 4. g3 Nf6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. b3 e5 4. Nc3 Nf6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 Nf6 4. h3 e5 *

[ECO "C11"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 dxe4 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nc6 3. c4 Bg4 4. Nc3 e6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. g3 Nf6 *

[ECO "B24"]

1. e4 c5 2. g3 Nc6 3. Nc3 e5 4. Bg2 Nf6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 Nf6 4. g3 e5 *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. Nc3 Nc6 4. Qd1 Nf6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. d3 Nf6 4. g3 e5 *

[ECO "B20"]

1. e4 c5 2. g3 Nc6 3. Bg2 e5 4. d3 Nf6 *

[ECO "A00"]

1. g3 Nf6 2. Bg2 c5 3. e4 Nc6 4. Ne2 e5 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. d3 e5 4. f4 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 Nf6 4. a4 e5 *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. Nc3 Nc6 4. Nd5 Nf6 *

[ECO "A00"]

1. g3 d5 2. Bg2 Nf6 3. Nf3 c6 4. b3 Bg4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. Bxf6 exf6 4. Nc3 Nc6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c6 3. e3 e6 4. Bd3 Na6 *

[ECO "A21"]

1. c4 e5 2. Nc3 c6 3. Nf3 Na6 4. Nxe5 Nf6 *

[ECO "A43"]

1. d4 c5 2. dxc5 e6 3. Nc3 Nf6 4. Be3 Na6 *

[ECO "A04"]

1. Nf3 c5 2. Nc3 Nc6 3. e4 e6 4. Bc4 Nge7 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bc4 e6 4. d3 Nge7 *

[ECO "C00"]

1. e4 e6 2. c4 c5 3. Nc3 Nc6 4. g3 Nge7 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. b3 Nc6 4. Nf3 Nge7 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 e6 4. g3 Nge7 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. Nf3 Nc6 4. c3 Nge7 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. Bxf6 exf6 4. e3 Be6 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. Nf3 Nc6 4. g3 Nge7 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. b3 e5 4. Bb5 Nge7 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 e5 4. Nge2 Nge7 *

[ECO "B22"]

1. e4 c5 2. c3 Nc6 3. Nf3 e5 4. Bb5 Nge7 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 e5 4. d3 Nge7 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 e5 4. Nd5 Nge7 *

[ECO "A81"]

1. d4 f5 2. g3 c6 3. Nc3 Nf6 4. Nf3 Na6 *

[ECO "A43"]

1. d4 c5 2. d5 f5 3. Nc3 Nf6 4. Nf3 Na6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Nf6 4. Qe2 g6 *

[ECO "A49"]

1. d4 Nf6 2. Nf3 g6 3. g3 c5 4. dxc5 Nc6 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 c6 4. Nf3 Bb4 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 g6 4. O-O Nf6 *

[ECO "B20"]

1. e4 c5 2. Na3 g6 3. Nf3 Nc6 4. Bc4 Nf6 *

[ECO "B23"]

1. e4 c5 2. f4 Nc6 3. Nc3 g6 4. Bc4 Nf6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. g4 Nf6 *

[ECO "A30"]

1. c4 c5 2. b3 Nf6 3. Bb2 Nc6 4. Nf3 g6 *

[ECO "A15"]

1. c4 Nf6 2. g3 c5 3. Bg2 g6 4. b3 Nc6 *

[ECO "A30"]

1. c4 c5 2. g3 Nc6 3. b3 g6 4. Bb2 Nf6 *

[ECO "A01"]

1. b3 c5 2. c4 Nf6 3. Bb2 Nc6 4. Nc3 g6 *

[ECO "A30"]

1. c4 c5 2. g3 Nc6 3. Bg2 g6 4. e3 Nf6 *

[ECO "A15"]

1. c3 Nf6 2. c4 c5 3. g3 Nc6 4. Bg2 g6 *

[ECO "E15"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bd6 *

[ECO "A04"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 Nf6 4. d4 g6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 Nf6 4. Bd3 g6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. c3 Nf6 4. Qc2 g6 *

[ECO "B21"]

1. e4 c5 2. f4 Nc6 3. Nf3 g6 4. c3 Nf6 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. d3 Nc6 4. f4 g6 *

[ECO "B21"]

1. e4 c5 2. f4 Nc6 3. Nf3 Nf6 4. d3 g6 *

[ECO "A02"]

1. f4 Nf6 2. Nf3 c5 3. g3 Nc6 4. Bg2 g6 *

[ECO "A04"]

1. Nf3 c5 2. b3 Nc6 3. e3 Nf6 4. Bb2 g6 *

[ECO "A00"]

1. g3 c5 2. Bg2 g6 3. b3 Nc6 4. Bb2 Nf6 *

[ECO "A00"]

1. g3 c5 2. Bg2 Nc6 3. d3 g6 4. Nf3 Nf6 *

[ECO "E20"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. g3 c5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. Bxf6 gxf6 4. dxc5 Nc6 *

[ECO "B27"]

1. e4 c5 2. Nf3 Nh6 3. Nc3 g6 4. Bc4 Nc6 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 g6 4. e3 Nh6 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. d5 Na6 4. Nc3 c6 *

[ECO "B12"]

1. e4 c6 2. d4 Na6 3. Nf3 Nf6 4. Nc3 g6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. Bxf6 gxf6 4. dxc5 Na6 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 Nf6 4. d3 h6 *

[ECO "A36"]

1. c4 c5 2. g3 Nc6 3. Nc3 Nf6 4. d3 h6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. g3 Nc6 4. Bg2 h6 *

[ECO "A11"]

1. c4 c6 2. Nf3 Nf6 3. b3 c5 4. Bb2 Nc6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c6 3. Qa4 c5 4. d3 Nc6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. e3 cxd4 4. exd4 Nc6 *

[ECO "B20"]

1. e4 c5 2. b4 cxb4 3. Nf3 Nc6 4. a3 Nf6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 cxd4 *

[ECO "B32"]

1. Nf3 c5 2. e4 Nc6 3. d4 cxd4 4. c3 Nf6 *

[ECO "B21"]

1. d4 c5 2. e4 cxd4 3. Qxd4 Nc6 4. Qa4 Nf6 *

[ECO "A00"]

1. Nc3 c5 2. Nf3 Nc6 3. e4 Nf6 4. Bc4 Nxe4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. e3 Nc6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 Nd4 4. Ng1 Nf6 *

[ECO "B32"]

1. e4 c5 2. Nf3 Nc6 3. d4 Nf6 4. d5 Nd4 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 g6 4. e3 Bg7 *

[ECO "B12"]

1. e4 c6 2. d4 Na6 3. Nf3 Nf6 4. e5 Ne4 *

[ECO "D00"]

1. d4 d5 2. f3 c5 3. e3 Nc6 4. Bb5 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. Nd2 c5 4. dxc5 Nc6 *

[ECO "A00"]

1. Nc3 Nf6 2. d4 c5 3. Nf3 d5 4. dxc5 Nc6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Qd3 c5 4. dxc5 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. d4 c5 4. dxc5 Nc6 *

[ECO "D02"]

1. d4 d5 2. Nf3 c5 3. dxc5 Nc6 4. a3 Nf6 *

[ECO "D00"]

1. d4 d5 2. Bg5 Nf6 3. e3 c5 4. c3 Nc6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nf6 3. d3 d5 4. b3 Nc6 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. e3 Nf6 4. Be2 d5 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. Bf4 e6 4. e3 Bd6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c5 3. g3 Nc6 4. d3 d5 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. e3 Nf6 4. d4 d5 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d5 3. d4 c5 4. e3 Nc6 *

[ECO "D00"]

1. d4 d5 2. Nd2 Nf6 3. e3 c5 4. c3 Nc6 *

[ECO "A45"]

1. d4 Nf6 2. g3 d5 3. Bg2 c5 4. c3 Nc6 *

[ECO "A45"]

1. d4 Nf6 2. g3 c5 3. e3 d5 4. Bg2 Nc6 *

[ECO "D02"]

1. Nf3 Nf6 2. d4 d5 3. h3 c5 4. e3 Nc6 *

[ECO "A00"]

1. Nc3 Nf6 2. d4 d5 3. f3 c5 4. e4 Nc6 *

[ECO "B23"]

1. e4 c5 2. Ne2 Nc6 3. Nbc3 Nf6 4. g3 d5 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 Nf6 4. Bd3 d5 *

[ECO "B20"]

1. e4 c5 2. d3 Nc6 3. g3 Nf6 4. Nc3 d5 *

[ECO "B21"]

1. e4 c5 2. f4 Nc6 3. Nf3 Nf6 4. Nc3 d5 *

[ECO "B20"]

1. e4 c5 2. d3 Nc6 3. g3 Nf6 4. f4 d5 *

[ECO "B21"]

1. e4 c5 2. f4 d5 3. d3 Nc6 4. Be2 Nf6 *

[ECO "B21"]

1. e4 c5 2. f4 d5 3. d3 Nc6 4. Nd2 Nf6 *

[ECO "A02"]

1. f4 c5 2. Nf3 Nf6 3. b3 Nc6 4. d3 d5 *

[ECO "A01"]

1. b3 c5 2. Bb2 Nc6 3. f4 d5 4. e3 Nf6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 c5 4. Bb2 Nc6 *

[ECO "A00"]

1. g3 d5 2. f4 Nf6 3. Bg2 c5 4. Nf3 Nc6 *

[ECO "A04"]

1. Nf3 c5 2. b3 Nc6 3. Bb2 d5 4. e3 Nf6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. Bxc6 bxc6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 c5 3. Bb2 Nc6 4. g3 d5 *

[ECO "A06"]

1. b3 d5 2. Nf3 c5 3. e3 Nc6 4. Nc3 Nf6 *

[ECO "A00"]

1. c3 d5 2. Nf3 Nf6 3. e3 c5 4. b3 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 c5 3. c3 Nc6 4. Bg2 d5 *

[ECO "B13"]

1. e4 c6 2. d4 d5 3. exd5 Nf6 4. dxc6 Nxc6 *

[ECO "B20"]

1. e4 c5 2. g3 d6 3. Nc3 Nf6 4. Bb5+ Nc6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Nf6 3. c4 c5 4. dxc5 Nc6 *

[ECO "B20"]

1. e4 c5 2. b3 Nc6 3. Nf3 d6 4. Bc4 Nf6 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. g3 Nc6 4. Bc4 Nf6 *

[ECO "A34"]

1. c4 c5 2. Nc3 Nf6 3. e4 d6 4. d3 Nc6 *

[ECO "A80"]

1. d4 f5 2. f4 Nf6 3. Nf3 e6 4. e3 c5 *

[ECO "B20"]

1. e4 c5 2. c4 Nc6 3. g3 d6 4. d3 Nf6 *

[ECO "B20"]

1. e4 c5 2. c4 Nc6 3. d3 Nf6 4. Be2 d6 *

[ECO "A30"]

1. c4 c5 2. b3 Nc6 3. Nc3 Nf6 4. e3 d6 *

[ECO "A30"]

1. c4 c5 2. b3 Nf6 3. Bb2 Nc6 4. Nc3 d6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 d6 4. d3 Nc6 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. e3 d6 4. d4 Nf6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. e3 Nc6 4. d4 d6 *

[ECO "A04"]

1. Nf3 c5 2. b3 Nc6 3. Bb2 d6 4. d4 Nf6 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. c3 Nc6 4. d4 Nf6 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. Bb2 Nf6 4. Bd3 Nc6 *

[ECO "D15"]

1. d4 Nf6 2. c4 g6 3. Nf3 c6 4. Nc3 d5 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. g3 Nc6 4. Bg2 Nf6 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. h3 Nf6 4. Nc3 Nc6 *

[ECO "B24"]

1. e4 c5 2. Nc3 Nc6 3. g3 d6 4. h3 Nf6 *

[ECO "B20"]

1. e4 c5 2. d3 Nc6 3. Nc3 d6 4. Be2 Nf6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 Nf6 4. d3 Nc6 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. Bd3 Nc6 4. O-O Nf6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. g3 Nc6 4. Bg2 Nf6 *

[ECO "A00"]

1. g3 Nf6 2. Bg2 c5 3. e4 d6 4. Na3 Nc6 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. f4 Nf6 4. Bd3 Nc6 *

[ECO "B20"]

1. e4 c5 2. b3 Nc6 3. Bb2 d6 4. f4 Nf6 *

[ECO "A04"]

1. Nf3 c5 2. Nc3 Nf6 3. e4 d6 4. e5 dxe5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 c5 3. b3 Nc6 4. Bb2 d6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. a4 Nf6 4. Nf3 Nc6 *

[ECO "D01"]

1. d4 d5 2. Nc3 Nf6 3. Bg5 c6 4. Qd3 Na6 *

[ECO "A04"]

1. Nf3 c6 2. c4 Nf6 3. g3 d5 4. Qc2 Na6 *

[ECO "A07"]

1. g3 d5 2. Nf3 Nf6 3. Bg2 c6 4. d4 Na6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c6 3. Nc3 d6 4. g3 Na6 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 c6 4. e3 Na6 *

[ECO "A41"]

1. d4 d6 2. e4 c6 3. c4 Nf6 4. Nc3 Na6 *

[ECO "A41"]

1. d4 d6 2. g3 Nf6 3. Bg2 c6 4. Nc3 Na6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. g3 c5 4. Bg2 Na6 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. g3 c6 4. b3 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. g3 c5 3. d5 Na6 4. Nc3 d6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. Nd2 c5 4. dxc5 Na6 *

[ECO "A40"]

1. d4 e6 2. c3 d5 3. Bf4 Nc6 4. e3 Nge7 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d5 4. Nxe5 Ne7 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. g3 d6 4. e3 Nge7 *

[ECO "A80"]

1. d4 f5 2. c3 Nf6 3. Bf4 d5 4. e3 Nc6 *

[ECO "A00"]

1. g3 f5 2. Nf3 Nf6 3. Bg2 d5 4. Nc3 Nc6 *

[ECO "D00"]

1. d4 d5 2. Bg5 f6 3. Bh4 Nc6 4. e3 Nh6 *

[ECO "A80"]

1. d4 f5 2. Qd3 d6 3. Nf3 Nf6 4. Nc3 Na6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 g6 4. Bb5+ Nc6 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Bf4 Nc6 4. e3 g6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 g6 4. d4 Nc6 *

[ECO "A03"]

1. f4 d5 2. d3 Nc6 3. d4 g6 4. Nf3 Nf6 *

[ECO "D04"]

1. d4 d5 2. e3 Nf6 3. Nf3 g6 4. Nc3 Nc6 *

[ECO "A06"]

1. Nf3 d5 2. d3 Nf6 3. Nc3 Nc6 4. d4 g6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. c3 Nc6 4. e3 g6 *

[ECO "A00"]

1. c3 Nc6 2. Nf3 Nf6 3. d4 d5 4. g3 g6 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. e3 g6 4. Nc3 Nc6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Qd3 Nc6 4. a3 g6 *

[ECO "A00"]

1. a3 g6 2. g3 Nc6 3. d4 d5 4. Nf3 Nf6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. c4 Nb6 *

[ECO "A02"]

1. f4 Nf6 2. Nf3 g6 3. e3 Nc6 4. Be2 d5 *

[ECO "A03"]

1. f4 d5 2. g3 Nf6 3. Nf3 Nc6 4. e3 g6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d5 3. e3 g6 4. Nc3 Nc6 *

[ECO "A00"]

1. g3 Nf6 2. Bg2 d5 3. d3 g6 4. Nd2 Nc6 *

[ECO "B00"]

1. e4 Nc6 2. d4 d5 3. e5 Nh6 4. Bb5 g6 *

[ECO "B00"]

1. e4 Nc6 2. d4 d5 3. e5 Nh6 4. Bxh6 gxh6 *

[ECO "A00"]

1. b4 g6 2. Bb2 Nf6 3. Nf3 d6 4. Nc3 Nc6 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. Bc4 Nc6 4. Nf3 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d6 3. d4 g6 4. c4 Nc6 *

[ECO "A41"]

1. d4 d6 2. Nf3 g6 3. e4 Nf6 4. Bd3 Nc6 *

[ECO "D30"]

1. Nf3 Nf6 2. d4 e6 3. c4 d5 4. Bg5 h6 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. Be3 Nf6 4. Bd3 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. b3 d6 4. Nc3 Nc6 *

[ECO "B07"]

1. d4 d6 2. Nc3 g6 3. e4 Nf6 4. h4 Na6 *

[ECO "D03"]

1. d4 d5 2. Nf3 Nf6 3. Bg5 Nc6 4. Nbd2 h6 *

[ECO "D00"]

1. d4 d5 2. Bg5 h6 3. Bf4 Nc6 4. e3 Nf6 *

[ECO "D00"]

1. d4 d5 2. Bg5 h6 3. Bh4 Nf6 4. e3 Nc6 *

[ECO "D00"]

1. d4 d5 2. Bg5 h6 3. Be3 Nc6 4. Nf3 Nf6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. d3 Nc6 4. Bf4 h6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 Nc6 4. Bb2 h5 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 Nc6 4. Be2 h5 *

[ECO "A45"]

1. e4 d6 2. d4 Nf6 3. f3 d5 4. e5 Nfd7 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Nc6 4. O-O h5 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 Nc6 4. Ne5 h5 *

[ECO "A45"]

1. d4 Nf6 2. c3 d6 3. f3 d5 4. Bf4 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. d4 Nc6 4. Nc3 d5 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 Nc6 3. d4 d6 4. f4 d5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. c4 d4 4. Bg2 Nc6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. c4 dxc4 4. Bg2 Nc6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 Nf6 4. e3 Nc6 *

[ECO "A15"]

1. c4 Nf6 2. g3 d5 3. Bg2 dxc4 4. Na3 Nc6 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 Nc6 3. d4 d5 4. Bf4 dxc4 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. c3 a6 4. d4 d5 *

[ECO "D00"]

1. e4 d5 2. d4 dxe4 3. Nc3 Nf6 4. f3 Nc6 *

[ECO "A06"]

1. Nf3 d5 2. d3 Nf6 3. Bf4 Nc6 4. Nc3 d4 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 d4 4. c3 Nc6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 Nc6 4. Nc3 d4 *

[ECO "D07"]

1. d4 d5 2. c4 Nc6 3. e3 Nf6 4. cxd5 Nxd5 *

[ECO "D06"]

1. c4 Nf6 2. d4 d5 3. cxd5 Nxd5 4. Nf3 Nc6 *

[ECO "A15"]

1. c4 Nf6 2. g3 Nc6 3. Bg2 d5 4. cxd5 Nxd5 *

[ECO "A45"]

1. d4 Nf6 2. Bf4 d5 3. Nc3 Nh5 4. Be3 Nc6 *

[ECO "D00"]

1. Nc3 d5 2. d4 Nf6 3. Bf4 Nh5 4. Bd2 Nc6 *

[ECO "A45"]

1. d4 Nf6 2. c3 d5 3. Bf4 Nh5 4. Bd2 Nc6 *

[ECO "C77"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 *

[ECO "E43"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. e3 b6 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e3 e6 4. Bxc4 a6 *

[ECO "D03"]

1. d4 d5 2. Nf3 Nf6 3. Bg5 Ne4 4. Bh4 Nc6 *

[ECO "A01"]

1. b3 Nc6 2. d4 d5 3. Nf3 Nf6 4. e3 Ne4 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. b3 Nc6 4. d4 Ne4 *

[ECO "A45"]

1. d4 Nf6 2. e4 Nxe4 3. Nf3 d5 4. Bd3 Nc6 *

[ECO "D00"]

1. d4 d5 2. Bg5 Nf6 3. c3 Ne4 4. Bf4 Nc6 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 d5 3. e5 Ne4 4. Qf3 Nc6 *

[ECO "B02"]

1. e4 d5 2. Nc3 Nf6 3. e5 Ne4 4. Nce2 Nc6 *

[ECO "B00"]

1. e4 Nc6 2. d4 d6 3. d5 Ne5 4. Nc3 Nf6 *

[ECO "D00"]

1. d4 d5 2. e3 Nf6 3. Bd3 Nc6 4. f4 Nb4 *

[ECO "D00"]

1. d4 d5 2. e3 e6 3. Bd3 Nc6 4. Nf3 Nh6 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 dxe4 4. dxe4 b6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 Nc6 3. e3 d5 4. Bb5 e6 *

[ECO "D50"]

1. d4 Nf6 2. c4 e6 3. Bg5 d5 4. Nc3 Nc6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. c3 Nf6 4. Bg5 Nc6 *

[ECO "A18"]

1. c4 Nf6 2. Nc3 e6 3. e4 Nc6 4. f4 d5 *

[ECO "A15"]

1. c4 Nf6 2. f4 e6 3. Nf3 Nc6 4. e3 d5 *

[ECO "A13"]

1. c4 e6 2. b3 Nf6 3. Nf3 d5 4. e3 Nc6 *

[ECO "A06"]

1. b3 d5 2. Nf3 Nf6 3. Bb2 e6 4. c4 Nc6 *

[ECO "A13"]

1. c4 e6 2. d3 d5 3. Nd2 Nc6 4. Ngf3 Nf6 *

[ECO "A15"]

1. c4 Nf6 2. g3 d5 3. Bg2 e6 4. Qc2 Nc6 *

[ECO "D11"]

1. c4 c6 2. d4 d5 3. Nf3 e6 4. Qc2 dxc4 *

[ECO "E00"]

1. d4 e6 2. c4 Nf6 3. e3 Nc6 4. Nc3 d5 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 Nc6 3. d4 e6 4. a3 d5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. c3 Nc6 4. Bf4 e6 *

[ECO "D02"]

1. Nf3 Nf6 2. d4 d5 3. Bf4 e6 4. Nbd2 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 Nc6 3. d4 d5 4. e3 e6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. b3 Nc6 4. d4 e6 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. c3 Nc6 4. Qb3 e6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Nc3 d5 4. g3 Nc6 *

[ECO "D00"]

1. d4 d5 2. e3 e6 3. Nc3 Nf6 4. Bd3 Nc6 *

[ECO "C50"]

1. e4 e5 2. Bc4 Nc6 3. Nf3 d6 4. d4 Be7 *

[ECO "A40"]

1. d4 e6 2. Nf3 Nf6 3. c3 Nc6 4. Qc2 d5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. c3 e6 4. g3 Nc6 *

[ECO "D05"]

1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Bd3 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 Nc6 3. d4 d5 4. Qd3 e6 *

[ECO "A06"]

1. Nf3 d5 2. e3 Nf6 3. Be2 Nc6 4. d4 e6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 Nc6 3. e3 e6 4. Nbd2 d5 *

[ECO "D02"]

1. Nf3 Nf6 2. d4 d5 3. Bd2 Nc6 4. Bc1 e6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nc6 3. e3 Nf6 4. Na3 e6 *

[ECO "C03"]

1. d4 e6 2. e4 d5 3. Nd2 Nc6 4. c3 Nf6 *

[ECO "C00"]

1. e4 e6 2. Qe2 Nc6 3. Nf3 Nf6 4. d4 d5 *

[ECO "C50"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 Nc6 4. e3 e6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 Nc6 4. Bb2 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d5 3. Bb2 e6 4. g3 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 e6 3. Bg2 d5 4. O-O Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 Nc6 3. d4 e6 4. Ne5 d5 *

[ECO "A02"]

1. f4 Nf6 2. Nf3 d5 3. e3 Nc6 4. Ne5 e6 *

[ECO "A20"]

1. c4 e5 2. d3 Nf6 3. Nf3 Nc6 4. Bg5 d5 *

[ECO "D00"]

1. d4 d5 2. h4 Nf6 3. Bg5 Nc6 4. e3 e5 *

[ECO "D00"]

1. d4 d5 2. Bg5 Nf6 3. Nd2 Nc6 4. e3 e5 *

[ECO "A00"]

1. d3 e5 2. Nf3 Nc6 3. e4 Nf6 4. Bg5 d5 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nf3 Bc5 *

[ECO "A20"]

1. c4 e5 2. e3 Nc6 3. a3 Nf6 4. b4 d5 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. h3 d5 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. a3 d5 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. f4 d5 *

[ECO "A20"]

1. c4 e5 2. b3 Nf6 3. e3 Nc6 4. Nc3 d5 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Bg2 Nf6 4. d3 d5 *

[ECO "A20"]

1. c4 e5 2. e3 Nf6 3. d3 Nc6 4. Nf3 d5 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. a3 d5 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 Nc6 3. Ng1 e5 4. e4 d5 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. d3 d5 4. Nbd2 Nc6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. h3 Nf6 4. Nc3 Bb4 *

[ECO "C25"]

1. e4 e5 2. Nc3 Nc6 3. g3 Nf6 4. a3 d5 *

[ECO "B02"]

1. e4 Nf6 2. d3 e5 3. f4 Nc6 4. Nf3 d5 *

[ECO "A00"]

1. Nc3 d5 2. e3 e5 3. Nce2 Nc6 4. b3 Nf6 *

[ECO "A00"]

1. g3 Nc6 2. Bg2 e5 3. b3 Nf6 4. Bb2 d5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 Nc6 3. Nc3 e5 4. d3 d5 *

[ECO "A06"]

1. Nf3 d5 2. d3 Nc6 3. Nbd2 Nf6 4. c3 e5 *

[ECO "A00"]

1. g3 Nf6 2. Bg2 e5 3. d3 d5 4. Nf3 Nc6 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 Nf6 4. Nd2 Nc6 *

[ECO "A06"]

1. Nf3 d5 2. d3 Nf6 3. e3 Nc6 4. Be2 e5 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 Nc6 4. e3 e5 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Bc4 Nf6 4. Nf3 Nc6 *

[ECO "A00"]

1. f3 e5 2. Nh3 d5 3. Nf2 Nf6 4. e3 Nc6 *

[ECO "A00"]

1. g3 d5 2. Bg2 e5 3. Nf3 Nc6 4. O-O Nf6 *

[ECO "A00"]

1. g3 d5 2. Bg2 e5 3. c3 Nf6 4. Na3 Nc6 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 Nc6 4. Bb5 e5 *

[ECO "C23"]

1. e4 e5 2. Bc4 d6 3. d3 Nc6 4. Ne2 Nf6 *

[ECO "C23"]

1. e4 e5 2. Bc4 d6 3. d3 Nc6 4. a3 Nf6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e4 Nc6 4. f4 d6 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. c4 d6 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. c4 Nf6 4. Nf3 Nc6 *

[ECO "A00"]

1. c4 e5 2. Nc3 Nc6 3. e3 d6 4. b3 Nf6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. d3 Nc6 4. g3 Nf6 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. c4 Nf6 4. Nc3 Nc6 *

[ECO "A20"]

1. c4 e5 2. e3 Nf6 3. Nc3 d6 4. d3 Nc6 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. e3 Nf6 4. a3 d6 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 Nc6 4. g3 e5 *

[ECO "A53"]

1. c4 Nf6 2. d4 d6 3. e4 e5 4. Nc3 Nc6 *

[ECO "C44"]

1. e4 Nc6 2. Nf3 e5 3. c3 Nf6 4. d4 d6 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. Bd3 e5 4. c3 Nc6 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 Nc6 4. Be3 e5 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Be2 d6 *

[ECO "C26"]

1. e4 e5 2. g3 Nf6 3. Nc3 Nc6 4. Nf3 d6 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e4 Nc6 4. Be3 Nf6 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. a3 d6 *

[ECO "A00"]

1. Nh3 e5 2. g3 Nc6 3. Bg2 Nf6 4. f4 d6 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. g3 Nc6 4. Nf3 Nf6 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 d6 4. Nc3 Nf6 *

[ECO "A04"]

1. Nf3 d6 2. d4 Nf6 3. e3 Nc6 4. Nc3 e6 *

[ECO "A45"]

1. d4 Nf6 2. c3 d6 3. Nf3 e6 4. g3 Nc6 *

[ECO "B00"]

1. e4 Nc6 2. d4 d6 3. Nc3 Nf6 4. Nge2 e6 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. c4 Nf6 4. e3 Na6 *

[ECO "A00"]

1. h3 Na6 2. Nc3 Nf6 3. Nf3 d5 4. d4 e6 *

[ECO "A54"]

1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. d5 Nbd7 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. d3 d5 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. Nf3 Nd7 4. e4 Ngf6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 d6 4. g3 Nbd7 *

[ECO "A41"]

1. d4 d6 2. Nf3 Nf6 3. c4 Nbd7 4. Bf4 e5 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e3 d6 4. d4 Nbd7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. b3 Nbd7 4. e3 e5 *

[ECO "A05"]

1. Nf3 Nf6 2. e3 d6 3. d4 Nbd7 4. Nc3 e5 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. h3 e5 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 d6 3. Nbd2 Nbd7 4. e4 e5 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. e3 Nd7 4. Nc3 Ngf6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. e3 d6 4. Bd3 Nbd7 *

[ECO "C66"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O d6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 e6 3. c4 d5 4. e3 Nbd7 *

[ECO "A13"]

1. Nf3 d5 2. g3 e6 3. c4 Nd7 4. b3 Ngf6 *

[ECO "A06"]

1. Nf3 d5 2. e3 Nf6 3. Be2 Nbd7 4. d4 e6 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. g3 Nd7 4. Bh3 Ngf6 *

[ECO "A07"]

1. Nf3 d5 2. g3 e6 3. Bg2 Nd7 4. d3 Ngf6 *

[ECO "A40"]

1. d4 e6 2. Nc3 d5 3. Nf3 Nf6 4. Ne5 Nbd7 *

[ECO "A00"]

1. b4 e5 2. b5 d5 3. Bb2 Nd7 4. e3 Ngf6 *

[ECO "A45"]

1. d4 Nf6 2. c3 d5 3. Bg5 Nbd7 4. Nd2 e5 *

[ECO "A00"]

1. b4 e5 2. a3 d5 3. Bb2 Nd7 4. e3 Ngf6 *

[ECO "A00"]

1. h3 e5 2. c3 d5 3. d4 Nd7 4. Be3 Ngf6 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 cxd4 *

[ECO "A00"]

1. g3 e5 2. Bg2 Nf6 3. c3 d5 4. d4 Nbd7 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. d3 d5 4. Nbd2 Nbd7 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. d3 Nbd7 4. Nbd2 e5 *

[ECO "A45"]

1. d4 Nf6 2. c3 d6 3. Nf3 g6 4. Bg5 Nbd7 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 d6 4. Nbd2 Nbd7 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nf3 Nbd7 4. Bf4 g6 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. g3 g6 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d6 3. d4 Nbd7 4. e3 g6 *

[ECO "A41"]

1. d4 d6 2. e4 Nf6 3. f3 Nbd7 4. Nh3 g6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Bb5+ Nbd7 4. c4 g6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Bf5 3. c4 e6 4. Qb3 Nc6 *

[ECO "A45"]

1. d4 Nf6 2. c3 d5 3. Bg5 Nbd7 4. Nd2 g6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Nbd7 4. d4 g6 *

[ECO "A06"]

1. Nf3 d5 2. e3 g6 3. c4 Nf6 4. Qa4+ Nbd7 *

[ECO "A41"]

1. d4 d6 2. Bg5 Nd7 3. Nc3 h6 4. Bc1 Ngf6 *

[ECO "D00"]

1. d4 d5 2. Bg5 Nf6 3. e3 Nbd7 4. Nf3 h6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. Bg5 Nbd7 4. c4 Ne4 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 d6 3. d4 Nbd7 4. Bf4 Nh5 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 d6 3. g3 Nbd7 4. Nc3 d5 *

[ECO "B07"]

1. d4 d6 2. e4 Nf6 3. Nc3 Nbd7 4. f4 d5 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Bb5+ Nbd7 4. d4 Nxd5 *

[ECO "A13"]

1. c4 e6 2. Nc3 b6 3. e4 Bb7 4. Nge2 Nf6 *

[ECO "A50"]

1. d4 Nf6 2. c4 Nc6 3. Nf3 e6 4. e3 g6 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. f3 Nc6 4. e4 e6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. e3 Nc6 4. Nbd2 g6 *

[ECO "E60"]

1. d4 Nf6 2. Nf3 g6 3. c4 e6 4. Qa4 Nc6 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 g6 4. Nd5 Nf6 *

[ECO "C50"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 g6 4. O-O Nf6 *

[ECO "A20"]

1. c4 e5 2. e3 Nc6 3. Nc3 Nf6 4. Qc2 g6 *

[ECO "A29"]

1. c4 Nf6 2. Nc3 Nc6 3. g3 e5 4. Nf3 g6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. d3 g6 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Bg2 g6 4. d3 Nf6 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. c3 Nf6 4. Bf4 Bf5 *

[ECO "A20"]

1. c4 e5 2. Qc2 Nf6 3. e3 Nc6 4. a3 g6 *

[ECO "E60"]

1. c4 Nf6 2. d4 g6 3. f3 Nc6 4. e4 e5 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Qa4 g6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. g3 Nc6 *

[ECO "A01"]

1. b3 Nf6 2. Bb2 g6 3. e3 Nc6 4. Bxf6 exf6 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Rb1 Nh6 *

[ECO "C00"]

1. d4 e6 2. e4 h6 3. Bb5 Nf6 4. Nc3 Nc6 *

[ECO "A40"]

1. d4 e6 2. c4 Nc6 3. Nc3 Nf6 4. Bg5 h6 *

[ECO "C00"]

1. e4 e6 2. d4 Nc6 3. Nf3 Nf6 4. Bg5 h6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 h6 3. Bf4 e6 4. e3 Nc6 *

[ECO "C00"]

1. d4 e6 2. e4 b6 3. Bd3 Bb7 4. Nf3 c5 *

[ECO "A00"]

1. h3 h6 2. e4 e5 3. Nf3 Nc6 4. Bb5 Nf6 *

[ECO "A00"]

1. a3 Nf6 2. c3 e5 3. d4 Nc6 4. Bg5 h6 *

[ECO "A00"]

1. d3 e5 2. Nf3 Nc6 3. e4 Nf6 4. Bg5 h6 *

[ECO "C28"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 Nc6 4. d3 h6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 h6 *

[ECO "A20"]

1. c4 e5 2. h4 Nc6 3. Nc3 Nf6 4. Nf3 h6 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. Be2 h6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Qa4 h6 *

[ECO "C25"]

1. Nc3 e5 2. e4 Nc6 3. g3 h5 4. Bc4 Nf6 *

[ECO "C25"]

1. e4 e5 2. Nc3 Nc6 3. g3 h5 4. Nf3 Nf6 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c3 Bg7 4. d4 Qa5 *

[ECO "A04"]

1. Nf3 e6 2. b3 Nc6 3. e4 Nf6 4. e5 Ne4 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. Qxd4 Nf6 4. Bb5 Nc6 *

[ECO "A17"]

1. c4 Nf6 2. Nc3 e6 3. g3 Nc6 4. Bg2 e5 *

[ECO "C00"]

1. e4 e6 2. Qe2 e5 3. c3 Nf6 4. d4 Nc6 *

[ECO "C00"]

1. e4 e6 2. d3 Nc6 3. Nf3 e5 4. Nc3 Nf6 *

[ECO "C00"]

1. e4 e6 2. Qe2 e5 3. g3 Nc6 4. Bg2 Nf6 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 Nc6 4. Nf3 Nf6 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d4 exd4 4. Qxd4 Nc6 *

[ECO "A20"]

1. c4 e5 2. b3 Nc6 3. Bb2 Nf6 4. Nf3 e4 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Qb3 e4 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. d4 c6 *

[ECO "A29"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. g3 e4 *

[ECO "A20"]

1. c4 e5 2. h3 Nf6 3. e3 Nc6 4. Nf3 e4 *

[ECO "A20"]

1. c4 e5 2. e3 Nc6 3. a3 Nf6 4. d4 exd4 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 Nc6 3. Bg2 e5 4. d4 e4 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. f4 Nc6 4. Nf3 Nf6 *

[ECO "C34"]

1. e4 e5 2. f4 exf4 3. Nf3 Nf6 4. d3 Nc6 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 e4 4. Nh3 Nf6 *

[ECO "A00"]

1. a4 e5 2. e3 Nc6 3. d4 exd4 4. exd4 Nf6 *

[ECO "C22"]

1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qa4 Nf6 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O Ng6 *

[ECO "E21"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 O-O *

[ECO "C65"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d4 Nxe4 *

[ECO "C65"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Bb5 Nxe4 *

[ECO "C43"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Nxe5 Nc6 *

[ECO "A52"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Nc6 *

[ECO "C23"]

1. e4 e5 2. Bc4 Nc6 3. f4 Nf6 4. Nf3 Nxe4 *

[ECO "A10"]

1. c4 Nc6 2. Nc3 Nf6 3. d4 e6 4. d5 Na5 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Nxe5 Nxe5 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Bg5 Na5 *

[ECO "A04"]

1. Nf3 f5 2. b3 Nc6 3. e3 Nf6 4. Bb5 e6 *

[ECO "A13"]

1. c4 e6 2. Nf3 f5 3. Nc3 Nf6 4. d3 Nc6 *

[ECO "A04"]

1. Nf3 f5 2. d4 Nf6 3. c4 e6 4. Nc3 Bb4 *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. Bf4 Bg7 4. c3 O-O *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. e3 Nf6 4. Nc3 Nc6 *

[ECO "A04"]

1. Nf3 f5 2. d3 Nf6 3. c4 Nc6 4. d4 e6 *

[ECO "A10"]

1. c4 f5 2. b3 Nc6 3. d4 e6 4. a3 Nf6 *

[ECO "A80"]

1. d4 f5 2. c3 Nf6 3. Nf3 e6 4. Bf4 Nc6 *

[ECO "A80"]

1. d4 f5 2. Qd3 e6 3. Nf3 Nc6 4. Bf4 Nf6 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. h3 e6 4. g4 Nc6 *

[ECO "A00"]

1. g3 f5 2. Nc3 Nf6 3. d4 e6 4. Bg2 Nc6 *

[ECO "A80"]

1. d4 f5 2. Qd3 e6 3. Nc3 Nc6 4. Nf3 Nf6 *

[ECO "A80"]

1. d4 f5 2. c3 Nf6 3. g3 e6 4. Nf3 Nc6 *

[ECO "A80"]

1. d4 f5 2. c3 Nf6 3. g3 e6 4. Bg2 Nc6 *

[ECO "A40"]

1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 Bxc3+ *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. e3 e6 4. Bd3 Nc6 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. e3 Nf6 4. h3 Nc6 *

[ECO "A40"]

1. d4 e6 2. g3 f5 3. Bg2 Nf6 4. Nd2 Nc6 *

[ECO "A01"]

1. b3 f5 2. Ba3 Nf6 3. Nf3 Nc6 4. d4 e6 *

[ECO "A00"]

1. h3 f5 2. Nf3 Nf6 3. Nc3 e6 4. g4 Nc6 *

[ECO "A04"]

1. Nf3 f5 2. b3 Nf6 3. Bb2 e6 4. g3 Nc6 *

[ECO "A04"]

1. Nf3 f5 2. d3 Nc6 3. g3 Nf6 4. Bg2 e6 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. Bg5 e6 4. e3 Nc6 *

[ECO "A04"]

1. Nf3 f5 2. d3 Nf6 3. Nc3 Nc6 4. Bg5 e6 *

[ECO "C63"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. d3 Nf6 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 d5 4. Nxd5 c6 *

[ECO "C25"]

1. e4 e5 2. Nc3 Nc6 3. g3 f5 4. exf5 Nf6 *

[ECO "C50"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 f5 4. d3 Nf6 *

[ECO "A10"]

1. c4 f5 2. b3 Nc6 3. e3 e5 4. h4 Nf6 *

[ECO "A20"]

1. c4 e5 2. b3 f5 3. Bb2 Nc6 4. Nc3 Nf6 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. e3 f5 4. Nge2 Nf6 *

[ECO "A00"]

1. g3 e5 2. Bg2 f5 3. c4 Nf6 4. Nf3 Nc6 *

[ECO "A01"]

1. b3 f5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb2 e5 *

[ECO "A04"]

1. Nf3 f5 2. d3 Nf6 3. g3 Nc6 4. Bg2 e5 *

[ECO "A04"]

1. Nf3 f5 2. b3 Nc6 3. e3 Nf6 4. Ba3 e5 *

[ECO "C15"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Bd3 dxe4 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 f6 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 g6 4. c3 Nge7 *

[ECO "A27"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Nge7 4. d4 exd4 *

[ECO "A40"]

1. d4 Nc6 2. c4 e5 3. d5 Nce7 4. g3 Nf6 *

[ECO "A00"]

1. h3 Nc6 2. e3 Nf6 3. d4 e5 4. d5 Ne7 *

[ECO "A80"]

1. h3 f5 2. d4 Nf6 3. Nf3 Nc6 4. d5 Nb4 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. c4 g6 4. b4 Nc6 *

[ECO "A10"]

1. c4 f5 2. Nf3 Nf6 3. g3 g6 4. b3 Nc6 *

[ECO "A00"]

1. g3 f5 2. Bg2 Nf6 3. c4 g6 4. b3 Nc6 *

[ECO "A10"]

1. c4 f5 2. g3 Nf6 3. Bg2 g6 4. d3 Nc6 *

[ECO "A17"]

1. c4 e6 2. Nf3 Nf6 3. Nc3 Bb4 4. Qc2 b6 *

[ECO "A80"]

1. d4 f5 2. Nf3 g6 3. b3 Nf6 4. e3 Nc6 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. g3 g6 4. b3 Nc6 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. b3 Nc6 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nd2 Nc6 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nc3 Nc6 4. e3 Nf6 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. Bg5 g6 4. Nbd2 Nc6 *

[ECO "A40"]

1. d4 g6 2. Nf3 Na6 3. e4 Nf6 4. e5 Ne4 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. g3 Nb6 4. Bg2 Nc6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. Bc4 Nb6 4. Be2 Nc6 *

[ECO "A50"]

1. d4 Nf6 2. c4 Nc6 3. d5 Ne5 4. Nf3 Nxc4 *

[ECO "C15"]

1. d4 e6 2. e4 d5 3. Nc3 Bb4 4. Ne2 Nf6 *

[ECO "A40"]

1. d4 Nc6 2. d5 Ne5 3. Nf3 Nxf3+ 4. exf3 Nf6 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 Nc6 3. d5 Nb4 4. a3 Na6 *

[ECO "A04"]

1. Nf3 Na6 2. e4 Nf6 3. e5 Nd5 4. Nc3 Nxc3 *

[ECO "B00"]

1. e4 Na6 2. Nf3 Nf6 3. e5 Nd5 4. c4 Nb6 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. c3 a6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Bb5+ Nd7 4. a4 a6 *

[ECO "A04"]

1. Nf3 c5 2. b3 d5 3. e3 a6 4. Ba3 Nd7 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. c3 a6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 e6 4. d3 a6 *

[ECO "B20"]

1. e4 c5 2. Bc4 e6 3. Nc3 a6 4. a3 Nc6 *

[ECO "A04"]

1. Nf3 f5 2. g3 Nf6 3. Bg2 e6 4. c4 Be7 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. c4 e6 4. Be2 Nc6 *

[ECO "A04"]

1. Nf3 e6 2. d4 c5 3. e3 a6 4. Bd3 Nc6 *

[ECO "B40"]

1. Nf3 c5 2. e4 e6 3. b3 a6 4. Bd3 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. g3 Nc6 4. Bg2 a6 *

[ECO "B23"]

1. e4 c5 2. Ne2 Nc6 3. Nbc3 e6 4. h3 a6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 a6 4. g3 Nc6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Bb5 a6 4. Be2 Nc6 *

[ECO "B20"]

1. e4 c5 2. b3 a6 3. Bb2 Nc6 4. f4 e6 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. a4 e6 4. d3 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. f4 a6 4. a4 e6 *

[ECO "A13"]

1. Nf3 Nf6 2. c4 e6 3. g3 a6 4. Bg2 b5 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 a6 4. g3 e5 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. g3 Nc6 4. Nge2 e5 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. g3 Nc6 4. Bg2 e5 *

[ECO "B23"]

1. e4 c5 2. Ne2 Nc6 3. Nbc3 e5 4. Nd5 a6 *

[ECO "A34"]

1. c4 c5 2. Nc3 g6 3. a3 Nc6 4. Rb1 a5 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. g3 Nc6 4. Bg2 g6 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. d3 Nc6 4. g3 g6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. a4 a6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 a6 4. Bd5 Nd4 *

[ECO "D02"]

1. d4 d5 2. Nf3 c5 3. dxc5 Nc6 4. c3 a5 *

[ECO "A83"]

1. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. Bg5 c6 *

[ECO "D00"]

1. d4 d5 2. f3 c5 3. e3 Nc6 4. Bb5 a6 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. c3 a6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 d6 4. O-O a6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nc6 4. d3 a6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. f4 d6 4. Bc4 a6 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. g3 d6 4. Bg2 Nc6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. a4 Nc6 *

[ECO "B21"]

1. e4 c5 2. f4 d6 3. Nc3 a6 4. a4 Nc6 *

[ECO "D07"]

1. d4 d5 2. c4 Nc6 3. Nc3 dxc4 4. Nf3 a6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. e3 Nc6 4. a3 a5 *

[ECO "A00"]

1. b4 e5 2. b5 a6 3. bxa6 Nxa6 4. Bb2 d6 *

[ECO "A41"]

1. d4 d6 2. c4 e5 3. d5 a5 4. e4 Na6 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. d4 a6 4. c5 Nc6 *

[ECO "D31"]

1. c4 e6 2. Nc3 d5 3. d4 Nc6 4. Nf3 a6 *

[ECO "C00"]

1. d4 a6 2. e4 e6 3. Nf3 d5 4. Nc3 Nc6 *

[ECO "C00"]

1. d4 a6 2. e4 e6 3. Bd3 d5 4. Nc3 Nc6 *

[ECO "A00"]

1. Nc3 e5 2. Nf3 Nc6 3. e3 d5 4. Bb5 a6 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 Nc6 4. Nf3 a6 *

[ECO "C62"]

1. e4 Nc6 2. Nf3 e5 3. Bb5 d6 4. c3 a6 *

[ECO "C62"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. O-O a6 *

[ECO "E12"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Ba6 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. e3 Nc6 4. Bb5 a6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. g3 Nd7 4. Bg2 a6 *

[ECO "C70"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 g5 *

[ECO "B00"]

1. e4 a6 2. d4 h6 3. Be3 e6 4. Bd3 Nc6 *

[ECO "C00"]

1. e4 e6 2. Qe2 e5 3. Qc4 Nc6 4. Nf3 a6 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 a6 4. d4 exd4 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f6 4. O-O a6 *

[ECO "A04"]

1. Nf3 b5 2. g3 Nc6 3. e4 a6 4. d4 e6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. f4 a6 4. Nf3 b5 *

[ECO "B30"]

1. Nf3 c5 2. e4 Nc6 3. Bb5 a6 4. Bxc6 bxc6 *

[ECO "A54"]

1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 e4 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 b6 *

[ECO "B00"]

1. e4 Nc6 2. Bb5 d5 3. Bxc6+ bxc6 4. e5 e6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. Nf3 Nd7 4. e3 b6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. Nf3 Nd7 4. d3 b6 *

[ECO "C30"]

1. e4 e5 2. f4 b6 3. d3 Nc6 4. fxe5 Nxe5 *

[ECO "A40"]

1. c4 e6 2. d4 b6 3. a3 f5 4. g3 Nc6 *

[ECO "B27"]

1. e4 c5 2. Nf3 b6 3. Bc4 e6 4. Nc3 Nc6 *

[ECO "B22"]

1. e4 c5 2. c3 b6 3. Bc4 e6 4. Qe2 Nc6 *

[ECO "A13"]

1. c4 e6 2. Nc3 c5 3. Nf3 b6 4. e4 Nc6 *

[ECO "A10"]

1. c4 b6 2. e4 e6 3. Qe2 c5 4. f4 Nc6 *

[ECO "C05"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Ne4 *

[ECO "A13"]

1. c4 e6 2. Nc3 c5 3. Nf3 b6 4. d3 Nc6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 b6 4. Nc3 Nc6 *

[ECO "B20"]

1. e4 c5 2. b3 b6 3. c4 Nc6 4. Bb2 e5 *

[ECO "A30"]

1. c4 c5 2. g3 Nc6 3. Bg2 b6 4. Nc3 e5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 b5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 b5 4. Bf4 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 b6 4. d4 cxd4 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Bb5+ Nc6 4. Bxc6+ bxc6 *

[ECO "A13"]

1. c4 e6 2. Nf3 c6 3. b3 d5 4. Bb2 Nd7 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. Nf3 c6 4. Qb3 Nd7 *

[ECO "B10"]

1. e4 c6 2. a3 d5 3. e5 f6 4. d4 fxe5 *

[ECO "A40"]

1. d4 e6 2. g3 d5 3. Bg2 c6 4. Nd2 Nd7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. Nd2 e6 4. Ngf3 Nd7 *

[ECO "B10"]

1. e4 c6 2. d3 d5 3. Nd2 e5 4. Qe2 Nd7 *

[ECO "A21"]

1. c4 e5 2. Nc3 c6 3. g3 d6 4. d4 Nd7 *

[ECO "B10"]

1. e4 c6 2. b3 e5 3. Bb2 d6 4. d4 Nd7 *

[ECO "B12"]

1. e4 c6 2. d4 d6 3. Nf3 Nd7 4. Bc4 e6 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. c4 e5 *

[ECO "A44"]

1. d4 c5 2. d5 e5 3. e4 d6 4. Bb5+ Nd7 *

[ECO "A44"]

1. d4 c5 2. d5 e5 3. e4 d6 4. Nc3 Nd7 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 e6 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. d4 c6 4. g3 dxc4 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. g3 Nd7 4. Nc3 c5 *

[ECO "A04"]

1. Nf3 e6 2. g3 d5 3. Bg2 Nd7 4. Nc3 c5 *

[ECO "A07"]

1. Nf3 d5 2. g3 e6 3. Bg2 Nd7 4. O-O c5 *

[ECO "C02"]

1. e4 e6 2. Nf3 d5 3. e5 c5 4. d4 Nd7 *

[ECO "D11"]

1. d4 d5 2. c4 c6 3. Nf3 Nd7 4. e3 f6 *

[ECO "D00"]

1. d4 d5 2. Nc3 f5 3. Bg5 c6 4. e3 Nd7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. Nd2 g6 4. Ngf3 Nd7 *

[ECO "A00"]

1. g3 g6 2. c4 c6 3. Bg2 d5 4. Qa4 Nd7 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. Nc3 c6 4. Be3 Nd7 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. Nc3 c6 4. Nf3 Nd7 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 c5 4. Nf3 cxd4 *

[ECO "B12"]

1. e4 c6 2. d4 d6 3. Nc3 Nd7 4. g3 g6 *

[ECO "A41"]

1. d4 d6 2. Nf3 g6 3. c4 Nd7 4. e4 c5 *

[ECO "B23"]

1. e4 c5 2. Nc3 g6 3. Nf3 d6 4. d4 Nd7 *

[ECO "A09"]

1. Nf3 d5 2. c4 c6 3. Qc2 dxc4 4. e3 Nd7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. Nd2 Nd7 4. Ngf3 dxe4 *

[ECO "B10"]

1. e4 c6 2. Nc3 d5 3. g3 dxe4 4. Nxe4 Nd7 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Qa4+ Nd7 4. Na3 c6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. g3 c5 4. Ne5 Nd7 *

[ECO "A07"]

1. Nf3 d5 2. g3 c5 3. c4 dxc4 4. Bg2 Nd7 *

[ECO "A07"]

1. Nf3 d5 2. g3 c5 3. c4 dxc4 4. Qa4+ Nd7 *

[ECO "C45"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. c4 Nc6 4. Nc3 g6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Qe2 Nc6 4. d3 g6 *

[ECO "A04"]

1. Nf3 c5 2. g3 e6 3. Bg2 Nc6 4. O-O g6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. c4 Nc6 4. Nc3 g5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Be2 Nc6 4. O-O g5 *

[ECO "A00"]

1. g3 c5 2. Bg2 Nc6 3. Nf3 e5 4. c4 g6 *

[ECO "A04"]

1. Nf3 c5 2. Nc3 Nc6 3. g3 e5 4. e4 g6 *

[ECO "B20"]

1. e4 c5 2. g3 g6 3. Bg2 e5 4. Nc3 Nc6 *

[ECO "A00"]

1. g3 c5 2. Nf3 Nc6 3. Bg2 e5 4. e4 g6 *

[ECO "B40"]

1. Nf3 e6 2. e4 c5 3. g3 Nc6 4. Bb5 h5 *

[ECO "C70"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Bc5 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. g3 Nc6 4. Nge2 h5 *

[ECO "B20"]

1. e4 c5 2. c4 Nc6 3. g3 e5 4. Nc3 h5 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. e3 e6 4. d4 cxd4 *

[ECO "A40"]

1. d4 e6 2. h4 c5 3. e3 cxd4 4. exd4 Nc6 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. c3 Nc6 4. Bf4 cxd4 *

[ECO "C00"]

1. e4 e6 2. Qe2 e5 3. c3 c5 4. Qh5 Nc6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. c3 e5 4. d4 cxd4 *

[ECO "B21"]

1. e4 c5 2. d4 cxd4 3. Qxd4 Nc6 4. Qa4 e5 *

[ECO "A43"]

1. d4 c5 2. dxc5 Na6 3. e4 Nxc5 4. Nc3 e6 *

[ECO "A43"]

1. d4 c5 2. dxc5 e6 3. Be3 Na6 4. Nd2 Nxc5 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. Bc4 Bg7 4. O-O Nc6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 Nd4 4. Bc4 e6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 Nd4 4. Ng1 e6 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. Nge2 Nc6 4. g3 Nd4 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. Qe2 Nc6 4. g3 Nd4 *

[ECO "A80"]

1. d4 f5 2. Qd3 e6 3. g3 c5 4. Nf3 Nc6 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. e3 e5 4. Be2 f5 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. c3 g6 4. d4 cxd4 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. Nc3 Nc6 4. Bb5 Nd4 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 Nd4 4. g3 g6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. g4 h6 *

[ECO "C51"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bb6 *

[ECO "B20"]

1. e4 c5 2. b4 cxb4 3. a3 bxa3 4. Nxa3 Nc6 *

[ECO "B00"]

1. e4 Nc6 2. Bb5 Nd4 3. Ba4 c6 4. c3 Ne6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Nd4 4. a4 Nxb5 *

[ECO "B20"]

1. e4 c5 2. Bc4 Nc6 3. d3 Na5 4. Bb3 Nxb3 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. e4 Nd4 4. Nxd4 cxd4 *

[ECO "B32"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nxd4 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Na5 4. d4 cxd4 *

[ECO "A11"]

1. c4 c6 2. d4 Na6 3. e4 c5 4. Nc3 cxd4 *

[ECO "A06"]

1. Nf3 d5 2. b3 c5 3. e3 Nc6 4. Bb5 f6 *

[ECO "A80"]

1. d4 f5 2. Qd3 d6 3. Bf4 c5 4. e3 Nc6 *

[ECO "E38"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 *

[ECO "C25"]

1. e4 e5 2. Nc3 Bc5 3. g3 Nf6 4. Bg2 Nc6 *

[ECO "B20"]

1. e4 c5 2. Na3 Nc6 3. Bb5 g6 4. c3 d5 *

[ECO "B22"]

1. e4 c5 2. c3 d5 3. d3 Nc6 4. Nd2 g6 *

[ECO "B20"]

1. e4 c5 2. d3 Nc6 3. f4 g6 4. c3 d5 *

[ECO "B21"]

1. e4 c5 2. f4 d5 3. d3 Nc6 4. Nf3 g6 *

[ECO "A04"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. d3 d5 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Bb5+ Nc6 4. d3 g6 *

[ECO "B21"]

1. e4 c5 2. f4 d6 3. Nf3 Nc6 4. Bb5 g6 *

[ECO "B21"]

1. e4 c5 2. f4 d6 3. Nc3 Nc6 4. Bc4 g6 *

[ECO "A30"]

1. c4 c5 2. Nf3 g6 3. e4 Nc6 4. h3 d6 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. c3 Nf6 *

[ECO "B20"]

1. e4 c5 2. c4 Nc6 3. g3 g6 4. Bg2 d6 *

[ECO "A30"]

1. c4 c5 2. g3 Nc6 3. d3 d6 4. Nf3 g6 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c3 d6 4. d4 Nc6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. b3 Nc6 4. Nc3 g6 *

[ECO "B20"]

1. e4 c5 2. d3 Nc6 3. Nc3 d6 4. Nf3 g6 *

[ECO "B20"]

1. e4 c5 2. g3 Nc6 3. Bg2 g6 4. d3 d6 *

[ECO "A07"]

1. Nf3 d5 2. g3 g6 3. c4 c6 4. Qc2 Na6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 g6 4. c4 Na6 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 g6 4. e5 Na6 *

[ECO "B10"]

1. e4 c6 2. Nf3 g6 3. d4 d5 4. e5 Na6 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. g3 Nc6 4. Bg2 Nf6 *

[ECO "A40"]

1. d4 Na6 2. e4 c6 3. Nf3 g6 4. c4 d6 *

[ECO "D00"]

1. d4 d5 2. Bg5 c5 3. dxc5 h6 4. Bf4 Nc6 *

[ECO "D00"]

1. d4 d5 2. Bg5 h6 3. Bh4 c5 4. dxc5 Nc6 *

[ECO "D00"]

1. d4 d5 2. Bg5 h6 3. Bh4 c5 4. e3 Nc6 *

[ECO "B21"]

1. e4 c5 2. f4 d5 3. d3 Nc6 4. e5 h5 *

[ECO "B20"]

1. e4 c5 2. g3 Nc6 3. Bg2 h5 4. Nf3 d6 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. Bb5+ Nc6 *

[ECO "A00"]

1. Nc3 d5 2. Nf3 d4 3. Nb5 c5 4. e3 Nc6 *

[ECO "A00"]

1. Nc3 d5 2. Nf3 d4 3. Nb5 c5 4. g3 Nc6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 c5 4. bxc5 Nc6 *

[ECO "B31"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. c3 Nf6 *

[ECO "A06"]

1. Nf3 d5 2. b3 c5 3. c4 d4 4. e3 Nc6 *

[ECO "A04"]

1. Nf3 c5 2. b3 d5 3. c4 d4 4. g3 Nc6 *

[ECO "A00"]

1. g3 c5 2. Bg2 Nc6 3. b3 d5 4. c4 d4 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. g3 c5 4. d3 Nc6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. e3 c5 4. d3 Nc6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 c5 4. e4 Nc6 *

[ECO "A07"]

1. Nf3 c5 2. g3 d5 3. c4 dxc4 4. Na3 Nc6 *

[ECO "A02"]

1. f4 c5 2. Nf3 Nc6 3. b3 d5 4. e3 d4 *

[ECO "A06"]

1. Nf3 d5 2. Nc3 c5 3. e4 d4 4. Ne2 Nc6 *

[ECO "A00"]

1. Nc3 c5 2. f4 d5 3. Nf3 Nc6 4. e4 d4 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. h3 Nc6 *

[ECO "B20"]

1. e4 c5 2. g3 d5 3. d3 Nc6 4. Bg2 dxe4 *

[ECO "B21"]

1. e4 c5 2. f4 d5 3. d3 dxe4 4. Nc3 Nc6 *

[ECO "B22"]

1. e4 c5 2. c3 d6 3. g3 d5 4. d3 Nc6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 c5 4. c3 Nc6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d5 *

[ECO "D00"]

1. d4 d5 2. f4 c5 3. e3 cxd4 4. exd4 Nc6 *

[ECO "A06"]

1. Nf3 d5 2. Nc3 c5 3. d4 Nc6 4. Bf4 cxd4 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. b3 Nc6 *

[ECO "B10"]

1. e4 c6 2. b3 d5 3. exd5 cxd5 4. Bb2 Nc6 *

[ECO "B10"]

1. e4 c6 2. h3 d5 3. exd5 cxd5 4. Nf3 Nc6 *

[ECO "D23"]

1. Nf3 Nf6 2. d4 d5 3. c4 dxc4 4. Qa4+ Nc6 *

[ECO "A11"]

1. c4 c6 2. Nf3 d5 3. cxd5 cxd5 4. g3 Nc6 *

[ECO "B20"]

1. e4 c5 2. Bc4 Nc6 3. Nf3 d6 4. d4 cxd4 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. e3 d6 4. d4 cxd4 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nc6 3. e3 d6 4. d4 cxd4 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. c3 Nc6 4. d4 cxd4 *

[ECO "B00"]

1. d4 Nc6 2. e4 d6 3. d5 Ne5 4. Nc3 c6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 Nd4 4. Ne5 d6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Bd3 d6 *

[ECO "A40"]

1. d4 Na6 2. e4 c6 3. Nc3 d5 4. exd5 cxd5 *

[ECO "A04"]

1. Nf3 c5 2. e3 Nc6 3. d4 d5 4. Bb5 e6 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. c4 d5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. b3 Nc6 4. Bb5 d5 *

[ECO "A04"]

1. Nf3 c5 2. Nc3 Nc6 3. d4 d5 4. dxc5 e6 *

[ECO "D02"]

1. d4 d5 2. Nf3 c5 3. dxc5 e6 4. e3 Nc6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 e6 4. d3 d5 *

[ECO "B20"]

1. e4 c5 2. Bc4 Nc6 3. Nf3 e6 4. O-O d5 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nc6 3. e3 e6 4. Nc3 d5 *

[ECO "A36"]

1. c4 c5 2. g3 Nc6 3. Nc3 e6 4. Nh3 d5 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. g3 c5 4. d3 Nc6 *

[ECO "A30"]

1. c4 c5 2. g3 Nc6 3. d3 e6 4. Bg2 d5 *

[ECO "A30"]

1. c4 c5 2. Nf3 e6 3. d4 d5 4. Bf4 Nc6 *

[ECO "C65"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d4 exd4 *

[ECO "A40"]

1. d4 e6 2. h4 c5 3. e3 Nc6 4. c4 d5 *

[ECO "D32"]

1. d4 d5 2. c4 e6 3. Nc3 c5 4. Nf3 Nc6 *

[ECO "A40"]

1. d4 e6 2. h4 c5 3. e3 Nc6 4. Nf3 d5 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. e3 c5 4. b3 Nc6 *

[ECO "A40"]

1. d4 e6 2. Nf3 d5 3. c3 c5 4. e3 Nc6 *

[ECO "D00"]

1. d4 d5 2. e3 e6 3. Nf3 c5 4. Be2 Nc6 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. c3 Nc6 4. a3 d5 *

[ECO "B23"]

1. e4 c5 2. Ne2 Nc6 3. Nbc3 e6 4. d4 d5 *

[ECO "C00"]

1. e4 e6 2. d4 d5 3. Bd3 c5 4. c3 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 e6 4. h3 d5 *

[ECO "C46"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 Nc6 4. Nf3 Nxe4 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. c3 e6 4. Be2 d5 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Nd2 c5 4. g3 Nc6 *

[ECO "B20"]

1. e4 c5 2. g3 Nc6 3. Bg2 e6 4. Ne2 d5 *

[ECO "B20"]

1. e4 c5 2. d3 Nc6 3. Nc3 e6 4. f4 d5 *

[ECO "B21"]

1. e4 c5 2. f4 e6 3. Nf3 Nc6 4. c3 d5 *

[ECO "B20"]

1. e4 c5 2. d3 Nc6 3. f4 e6 4. Nf3 d5 *

[ECO "B21"]

1. e4 c5 2. f4 e6 3. d3 Nc6 4. Nd2 d5 *

[ECO "A04"]

1. Nf3 c5 2. b3 d5 3. e3 e6 4. Bb2 Nc6 *

[ECO "A06"]

1. Nf3 d5 2. b3 c5 3. g3 e6 4. Nc3 Nc6 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 c5 4. Qg4 Nc6 *

[ECO "C07"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 *

[ECO "A00"]

1. g3 c5 2. Bg2 Nc6 3. b3 d5 4. Nf3 e5 *

[ECO "A04"]

1. Nf3 c5 2. b3 d5 3. Bb2 Nc6 4. Nc3 e5 *

[ECO "A04"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 e5 4. d3 d5 *

[ECO "B51"]

1. Nf3 c5 2. e4 d6 3. Bb5+ Nc6 4. O-O e5 *

[ECO "B20"]

1. e4 c5 2. b3 Nc6 3. Bb2 e5 4. Bc4 d6 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. e4 d6 4. Nf3 e5 *

[ECO "B20"]

1. e4 c5 2. Ne2 d6 3. c4 e5 4. Nbc3 Nc6 *

[ECO "B20"]

1. e4 c5 2. c4 e5 3. d3 d6 4. Nc3 Nc6 *

[ECO "A30"]

1. c4 c5 2. g3 e5 3. d3 Nc6 4. f4 d6 *

[ECO "A30"]

1. c4 c5 2. b3 Nc6 3. Nf3 e5 4. Nc3 d6 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nc3 d6 4. Nf3 Bg4 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. b3 e5 4. g3 d6 *

[ECO "A21"]

1. c4 e5 2. Nc3 c5 3. Nf3 Nc6 4. e3 d6 *

[ECO "A00"]

1. g3 c5 2. Bg2 Nc6 3. Nf3 e5 4. c4 d6 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. g3 Nc6 4. Bg2 e5 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. Nf3 Nc6 4. Nc3 e5 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. Bb2 e5 4. Nc3 Nc6 *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. Nc3 Nc6 4. Nf3 d6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 e5 4. Ng3 Nc6 *

[ECO "B20"]

1. e4 c5 2. g3 d6 3. Nc3 Nc6 4. Bg2 e5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bf4 b6 4. e3 Bb7 *

[ECO "B20"]

1. e4 c5 2. g3 Nc6 3. Bg2 e5 4. d3 d6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. g3 Nc6 4. Bg2 e5 *

[ECO "B20"]

1. e4 c5 2. b3 Nc6 3. Bb2 d6 4. f4 e5 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. b3 d6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 d6 4. e5 e6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Bc4 e6 4. Qe2 Nc6 *

[ECO "B20"]

1. e4 c5 2. c4 Nc6 3. Nc3 e6 4. f4 d6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Nd4 Nc6 4. Nc3 d6 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. Nf3 Nc6 4. b3 d6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. b3 Nc6 4. Nc3 e6 *

[ECO "A50"]

1. d4 Nf6 2. c4 c6 3. Nc3 d5 4. e3 Bf5 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. Nge2 d6 4. g3 Nc6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Be2 Nc6 4. O-O d6 *

[ECO "B20"]

1. e4 c5 2. g3 Nc6 3. Bg2 e6 4. Ne2 d6 *

[ECO "B21"]

1. e4 c5 2. f4 e6 3. Qe2 Nc6 4. Nf3 d6 *

[ECO "B21"]

1. e4 c5 2. f4 e6 3. Nf3 d6 4. g3 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 e6 4. Bxc6 dxc6 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. g3 c6 4. b3 Na6 *

[ECO "A11"]

1. c4 c6 2. g3 d5 3. Qc2 e5 4. d3 Na6 *

[ECO "A40"]

1. d4 Na6 2. e4 c6 3. Nf3 Nc7 4. Bd3 d5 *

[ECO "A11"]

1. c4 c6 2. d4 Na6 3. Nc3 Nc7 4. d5 d6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d5 3. Bb2 c6 4. d3 Bg4 *

[ECO "A40"]

1. d4 Na6 2. e4 c6 3. Nf3 Nc7 4. c4 g6 *

[ECO "B12"]

1. e4 c6 2. d4 Na6 3. Nf3 h6 4. Nc3 Nc7 *

[ECO "A40"]

1. d4 Nc6 2. c4 e5 3. d5 Nce7 4. Nc3 d6 *

[ECO "D00"]

1. d4 d5 2. Nc3 f5 3. Bg5 Nc6 4. f3 h6 *

[ECO "A80"]

1. d4 f5 2. g4 d5 3. g5 h6 4. Nc3 Nc6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 Nc6 4. Nxc4 f6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. e3 Nc6 4. g3 f6 *

[ECO "A80"]

1. d4 f5 2. g4 fxg4 3. Nc3 Nc6 4. h3 d6 *

[ECO "D00"]

1. d4 d5 2. a3 Nc6 3. Bf4 f6 4. Nf3 g5 *

[ECO "D00"]

1. d4 d5 2. Bg5 g6 3. Nc3 f6 4. Bd2 Nc6 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. e3 Bf5 4. Nc3 e6 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e3 g6 4. Bxc4 Nc6 *

[ECO "A00"]

1. g3 g6 2. e4 d5 3. Nc3 dxe4 4. Nxe4 Nc6 *

[ECO "D00"]

1. d4 d5 2. Bg5 g6 3. Nc3 Nc6 4. Nf3 h6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Qa4+ Nd7 4. Qxc4 Nb6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nd7 3. c4 dxc4 4. e4 Nb6 *

[ECO "A02"]

1. f4 Nc6 2. e4 Nf6 3. Nc3 d5 4. e5 Ng8 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nc6 3. e4 dxe4 4. d5 Nb4 *

[ECO "D07"]

1. d4 d5 2. c4 Nc6 3. Nc3 dxc4 4. d5 Na5 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Nd2 g6 4. Ngf3 Nc6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nc6 3. Bg2 e5 4. O-O g6 *

[ECO "A43"]

1. d4 Nf6 2. Nf3 c5 3. d5 b5 4. Bg5 Qb6 *

[ECO "A40"]

1. d4 g6 2. e4 d6 3. c4 e5 4. dxe5 Nc6 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 g6 4. Bc4 d6 *

[ECO "A10"]

1. c4 g6 2. e4 e5 3. Nf3 Nc6 4. Nc3 d6 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. Bg2 g6 4. e4 Nc6 *

[ECO "A20"]

1. c4 e5 2. g3 g6 3. Bg2 Nc6 4. e3 d6 *

[ECO "C25"]

1. e4 e5 2. Nc3 Nc6 3. g3 d6 4. Bg2 g6 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 d6 4. Nf3 g6 *

[ECO "A02"]

1. f4 e5 2. fxe5 Nc6 3. Nf3 g5 4. h3 d6 *

[ECO "A41"]

1. d4 d6 2. c4 e5 3. d5 g6 4. Nc3 Na6 *

[ECO "A40"]

1. d4 e6 2. h4 Nc6 3. e4 d5 4. e5 h5 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. c3 d5 4. exd5 Qxd5 *

[ECO "A00"]

1. g4 h6 2. h3 Nc6 3. Nc3 e5 4. Nf3 d5 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Bb5 dxe4 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. Nc3 d4 4. Nb5 Nc6 *

[ECO "C00"]

1. e4 e6 2. f4 d5 3. e5 d4 4. Nf3 Nc6 *

[ECO "C00"]

1. e4 e6 2. g4 d5 3. e5 d4 4. Nf3 Nc6 *

[ECO "C00"]

1. e4 e6 2. b3 d5 3. Bb2 Nc6 4. e5 d4 *

[ECO "C00"]

1. e4 e6 2. d3 Nc6 3. Nf3 d5 4. e5 d4 *

[ECO "A13"]

1. Nf3 d5 2. g3 e6 3. c4 d4 4. e3 Nc6 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. g3 d4 4. Bg2 Nc6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. g3 e6 4. Nc3 Nc6 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 b6 4. c3 Qd7 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. g3 e6 4. Bg2 Nc6 *

[ECO "A40"]

1. d4 e6 2. g3 d5 3. c4 dxc4 4. Bg2 Nc6 *

[ECO "B00"]

1. e4 Nc6 2. d4 e6 3. Nf3 d5 4. Nbd2 dxe4 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 Nc6 4. Nf3 d4 *

[ECO "B01"]

1. e4 d5 2. Nc3 e6 3. g3 d4 4. Nce2 Nc6 *

[ECO "C00"]

1. e4 e6 2. b3 d5 3. Bb2 dxe4 4. d3 Nc6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. g3 e6 4. Qa4+ Nc6 *

[ECO "D30"]

1. d4 e6 2. c4 d5 3. Bf4 dxc4 4. Qa4+ Nc6 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. d4 dxc4 4. Qa4+ Nc6 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 d5 4. Bb5 e4 *

[ECO "D00"]

1. d4 d5 2. Bg5 h6 3. Bh4 c6 4. Nf3 Qb6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. c5 Nc6 4. e3 e5 *

[ECO "A00"]

1. g4 e5 2. Nc3 Nc6 3. Nf3 d5 4. d4 e4 *

[ECO "A00"]

1. c3 d5 2. h3 e5 3. d4 Nc6 4. Be3 e4 *

[ECO "D00"]

1. d4 d5 2. a3 Nc6 3. Nc3 e5 4. Nf3 e4 *

[ECO "A00"]

1. a3 d5 2. c3 e5 3. d4 Nc6 4. Nf3 e4 *

[ECO "A00"]

1. a3 e5 2. e3 d5 3. d4 Nc6 4. Nf3 e4 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 d5 4. Nf3 e4 *

[ECO "A06"]

1. Nf3 d5 2. e3 Nc6 3. Be2 e5 4. O-O e4 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. Nf3 e4 4. Ng1 Nc6 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. c4 Nc6 4. g3 d5 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e3 Bb4 4. Nge2 O-O *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. g3 Nc6 4. Bg2 d5 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 d6 4. Nc3 d5 *

[ECO "A00"]

1. g4 e5 2. Nc3 d5 3. d4 Nc6 4. dxe5 d4 *

[ECO "A00"]

1. Nc3 d5 2. e4 dxe4 3. Nxe4 e5 4. Bc4 Nc6 *

[ECO "A00"]

1. Nc3 d5 2. e4 d4 3. Nb1 e5 4. Bc4 Nc6 *

[ECO "A00"]

1. h3 d5 2. c4 d4 3. Nf3 Nc6 4. d3 e5 *

[ECO "A00"]

1. g3 d5 2. Bg2 e5 3. c4 d4 4. e3 Nc6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. e3 Nc6 4. a3 e5 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 Nc6 4. e4 e5 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 Nc6 4. e3 e5 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 c6 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Be7 4. c3 c5 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e3 Nc6 4. Nc3 e5 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 Nc6 4. e4 dxe4 *

[ECO "C34"]

1. e4 e5 2. f4 exf4 3. Nf3 d6 4. Bc4 Nc6 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 d6 4. Qf3 Nc6 *

[ECO "C25"]

1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. Nf3 d6 *

[ECO "C25"]

1. e4 e5 2. Nc3 d6 3. f4 exf4 4. Qf3 Nc6 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 d6 4. Nf3 e4 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. g3 Nc6 4. Nf3 e4 *

[ECO "A41"]

1. c4 d6 2. d4 e5 3. dxe5 Nc6 4. Nf3 Nxe5 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. d4 d6 4. dxe5 Nxe5 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e3 g6 4. Bxc4 Bg7 *

[ECO "C25"]

1. e4 e5 2. Nc3 d6 3. Bc4 Nc6 4. Nge2 Na5 *

[ECO "C50"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 4. c3 Na5 *

[ECO "A40"]

1. d4 Nc6 2. d5 Ne5 3. e4 e6 4. Qd4 d6 *

[ECO "A20"]

1. c4 e5 2. Qc2 Nc6 3. e3 d5 4. cxd5 Nb4 *

[ECO "A00"]

1. h3 d5 2. b3 Nc6 3. d4 e5 4. dxe5 Nxe5 *

[ECO "A00"]

1. h3 d5 2. d4 Nc6 3. c3 e5 4. dxe5 Nxe5 *

[ECO "D00"]

1. d4 d5 2. a3 Nc6 3. e3 e5 4. dxe5 Nxe5 *

[ECO "A40"]

1. d4 e6 2. Nf3 d5 3. e3 f5 4. Be2 Nc6 *

[ECO "C03"]

1. d4 e6 2. e4 d5 3. Nd2 Nc6 4. c3 f5 *

[ECO "A80"]

1. d4 f5 2. g4 d5 3. g5 e6 4. Nc3 Nc6 *

[ECO "A80"]

1. d4 f5 2. g4 d5 3. g5 Nc6 4. Nf3 e6 *

[ECO "A40"]

1. d4 e6 2. Nf3 Nc6 3. g3 d5 4. Bf4 f6 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 d5 4. Bb5 f6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nc6 3. d4 f6 4. c4 e5 *

[ECO "D00"]

1. d4 d5 2. Bg5 f6 3. Bd2 e5 4. e3 Nc6 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 d5 4. Nf3 f6 *

[ECO "A10"]

1. c4 f5 2. b3 e5 3. Bb2 Nc6 4. g3 d5 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Bg2 f5 4. e3 d5 *

[ECO "A04"]

1. Nf3 f5 2. d3 Nc6 3. e4 e5 4. exf5 d6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. e4 Nc6 4. Nge2 f5 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 g6 4. Bb2 Bg7 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. Bg2 Nc6 4. e4 f5 *

[ECO "A10"]

1. c4 f5 2. b3 Nc6 3. Bb2 e5 4. g3 d6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. e3 Nc6 4. d4 f5 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 f5 4. d4 d6 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 d6 4. Nf3 f5 *

[ECO "A04"]

1. Nf3 d6 2. d4 f5 3. c3 e6 4. e3 Nc6 *

[ECO "A00"]

1. b4 e5 2. Bb2 d6 3. c4 g6 4. d4 Nd7 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. Nf3 Nd7 4. e3 g6 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. c4 e5 4. Ne2 Nd7 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. e3 Nd7 4. d4 g6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e4 Bc5 4. d3 d6 *

[ECO "B06"]

1. e4 g6 2. Nf3 d6 3. d4 Nd7 4. Bc4 e6 *

[ECO "D00"]

1. d4 d5 2. Bg5 Nd7 3. e3 h6 4. Bf4 e6 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. g3 Nd7 4. Nc3 h6 *

[ECO "C23"]

1. e4 e5 2. Bc4 d6 3. Nf3 Nd7 4. d4 exd4 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. d4 Nd7 4. g3 exd4 *

[ECO "A00"]

1. b4 e5 2. b5 d5 3. Bb2 Nd7 4. d4 e4 *

[ECO "A00"]

1. h3 e5 2. e3 d5 3. d4 Nd7 4. Nf3 e4 *

[ECO "A00"]

1. h3 e5 2. c3 d5 3. d4 Nd7 4. Be3 exd4 *

[ECO "C00"]

1. c4 e6 2. e4 d5 3. cxd5 exd5 4. Qa4+ Nd7 *

[ECO "A00"]

1. Nc3 e5 2. Nf3 d6 3. d4 Nd7 4. dxe5 dxe5 *

[ECO "A04"]

1. Nf3 f5 2. d4 Nf6 3. c4 g6 4. g3 Bg7 *

[ECO "A00"]

1. g3 d5 2. Bg2 e5 3. c4 dxc4 4. Qa4+ Nd7 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. Nf3 f5 4. d4 Nd7 *

[ECO "A40"]

1. d4 e6 2. g3 f5 3. Bg2 d5 4. Nf3 Nd7 *

[ECO "A40"]

1. d4 e6 2. Nf3 d5 3. Nc3 f5 4. Ne5 Nd7 *

[ECO "A40"]

1. d4 e6 2. Nd2 d5 3. Ngf3 f5 4. Ne5 Nd7 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nd7 3. Bg5 f6 4. Bf4 g5 *

[ECO "D00"]

1. d4 d5 2. Bg5 Nd7 3. c4 dxc4 4. Qa4 h6 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. e3 g6 4. d4 exd4 *

[ECO "C37"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Nc6 *

[ECO "C34"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h3 Nc6 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. e3 b6 *

[ECO "B00"]

1. e4 g5 2. d4 h6 3. Bc4 e6 4. Nc3 Nc6 *

[ECO "C40"]

1. e4 e5 2. Nf3 Qf6 3. Nc3 Nc6 4. Nd5 Qd8 *

[ECO "A00"]

1. g3 e5 2. Bg2 Nc6 3. d4 Nxd4 4. Nf3 Nc6 *

[ECO "C00"]

1. e4 e6 2. Qe2 e5 3. c3 Nc6 4. f4 exf4 *

[ECO "A40"]

1. d4 Nc6 2. d5 Ne5 3. f4 Ng6 4. c4 e6 *

[ECO "A40"]

1. d4 Nc6 2. d5 Ne5 3. e4 e6 4. Qd4 Ng6 *

[ECO "B00"]

1. e4 Nc6 2. d4 e5 3. d5 Nce7 4. Nc3 Ng6 *

[ECO "B00"]

1. e4 Nc6 2. d4 e5 3. d5 Nce7 4. a3 Ng6 *

[ECO "A20"]

1. c4 e5 2. Nf3 e4 3. Nd4 Nc6 4. Nc2 Ne5 *

[ECO "C00"]

1. e4 e6 2. Qe2 e5 3. g3 Nc6 4. Nc3 Nd4 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. e3 Nf6 4. Bd3 e5 *

[ECO "A01"]

1. b3 Nc6 2. Nf3 e5 3. Bb2 e4 4. Nd4 Nxd4 *

[ECO "B00"]

1. e4 Nc6 2. d4 e5 3. dxe5 Nxe5 4. Nf3 Nxf3+ *

[ECO "A13"]

1. c4 e6 2. Nc3 f5 3. e4 fxe4 4. Nxe4 Nc6 *

[ECO "C63"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. Qe2 fxe4 *

[ECO "C63"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. exf5 e4 *

[ECO "A00"]

1. g3 f5 2. Bg2 Nc6 3. d4 e6 4. d5 exd5 *

[ECO "A20"]

1. c4 e5 2. d3 Nc6 3. Nc3 f5 4. e4 fxe4 *

[ECO "A04"]

1. Nf3 f5 2. e4 fxe4 3. Ng5 e5 4. Nxe4 Nc6 *

[ECO "C40"]

1. e4 e5 2. Nf3 f5 3. d3 Nc6 4. Be2 fxe4 *

[ECO "A13"]

1. c4 e6 2. g3 f5 3. Bg2 Nc6 4. Nf3 e5 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 g6 3. g3 d5 4. cxd5 Nxd5 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. e3 f5 4. d4 e4 *

[ECO "A80"]

1. d4 f5 2. Nf3 g6 3. b3 Nc6 4. Ba3 e6 *

[ECO "A20"]

1. c4 e5 2. g3 Nc6 3. Bg2 g6 4. e3 f5 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. d4 Nc6 4. d5 Nce7 *

[ECO "B00"]

1. e4 Nc6 2. d4 e5 3. d5 Nce7 4. h4 f5 *

[ECO "B00"]

1. e4 Nc6 2. d4 e5 3. d5 Nce7 4. h4 h5 *

[ECO "B00"]

1. e4 g5 2. d4 h6 3. Bc4 Nc6 4. h4 g4 *

[ECO "A40"]

1. d4 Nc6 2. d5 Ne5 3. f4 Ng6 4. f5 Nh4 *

[ECO "D06"]

1. d4 d5 2. c4 Bf5 3. Qb3 Nf6 4. Qxb7 Nbd7 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. Nc3 Bb7 4. d3 Nc6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. d3 Bb7 4. e4 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. c3 Nc6 4. Bg2 Bb7 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 Nc6 4. Bb5 Bg4 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. e3 Nc6 4. Bb5 Nf6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. c4 Bf5 4. Nc3 Nc6 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. e3 Nf6 4. c4 Nc6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. h4 Nc6 4. Bf4 Bf5 *

[ECO "D00"]

1. d4 d5 2. Bf4 Nf6 3. e3 Nc6 4. Nc3 Bf5 *

[ECO "A45"]

1. d4 Nf6 2. g3 d5 3. Bg2 Nc6 4. f4 Bf5 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d5 3. g3 Nc6 4. d4 Bf5 *

[ECO "C11"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 *

[ECO "B54"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 a6 *

[ECO "D00"]

1. d4 d5 2. g3 Bf5 3. c3 Nc6 4. Qb3 Nf6 *

[ECO "A06"]

1. Nf3 d5 2. d3 Nf6 3. c3 Nc6 4. d4 Bf5 *

[ECO "D00"]

1. d4 d5 2. g3 Bf5 3. c3 Nc6 4. Bg2 Nf6 *

[ECO "A06"]

1. Nf3 d5 2. e3 Nf6 3. Be2 Nc6 4. d4 Bf5 *

[ECO "A07"]

1. g3 d5 2. Nf3 Nc6 3. d4 Bf5 4. e3 Nf6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Nc6 3. d4 Bf5 4. Ba3 Nf6 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nc3 Bf5 4. e3 Nc6 *

[ECO "A00"]

1. a3 d5 2. Nf3 Nf6 3. d4 Nc6 4. c3 Bf5 *

[ECO "D00"]

1. d4 d5 2. a3 Nc6 3. Nf3 Nf6 4. e3 Bf5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Bf5 4. d3 Nc6 *

[ECO "A40"]

1. d4 e6 2. c4 c5 3. d5 exd5 4. cxd5 d6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. h4 Bf5 4. Bg5 Nc6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. Nd2 Bf5 4. e3 Nc6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nc6 3. Bf4 Bg4 4. c4 Nf6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nc6 3. c4 Bg4 4. Nc3 Nf6 *

[ECO "D04"]

1. Nf3 d5 2. d4 Nf6 3. e3 Nc6 4. c4 Bg4 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 Nc6 4. Nc3 Bg4 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bg4 3. Nc3 Nf6 4. Qd3 Nc6 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. g3 Nc6 4. Bf4 Bg4 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. d4 Nc6 4. c3 Nf6 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. c3 Nc6 4. e3 Bg4 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. c3 d5 4. exd5 Qxd5 *

[ECO "A07"]

1. g3 d5 2. Nf3 Nc6 3. d4 Bg4 4. Nbd2 Nf6 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nf3 Nc6 4. e3 Bg4 *

[ECO "D02"]

1. Nf3 d5 2. d3 Nc6 3. d4 Nf6 4. a3 Bg4 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 Bg4 4. Be2 Nc6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. c4 Nc6 4. d4 Bf5 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. d4 Nc6 4. Bb2 Bf5 *

[ECO "A41"]

1. d4 d6 2. Nf3 Nf6 3. Nc3 Bf5 4. e3 Nc6 *

[ECO "A45"]

1. d4 Nf6 2. c3 d6 3. Nf3 Bf5 4. g3 Nc6 *

[ECO "A04"]

1. Nf3 d6 2. e4 Nc6 3. Bc4 Nf6 4. d3 Bg4 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. e3 Nf6 4. Nc3 Nc6 *

[ECO "B20"]

1. e4 c5 2. g3 Nc6 3. d3 d5 4. exd5 Qxd5 *

[ECO "B00"]

1. e4 Nc6 2. Nf3 d6 3. d4 Bg4 4. Be2 Nf6 *

[ECO "A00"]

1. c3 d5 2. Qa4+ Bd7 3. Qb3 Nf6 4. Nf3 Nc6 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 Nc6 4. Nc3 Bd7 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 Bf5 4. g3 Nbd7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. c4 Bf5 4. e3 Nbd7 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 d6 3. Bf4 Bg4 4. e3 Nbd7 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. Nbd2 Nd7 4. g3 Ngf6 *

[ECO "A00"]

1. Nc3 d5 2. Nf3 Nf6 3. e3 Bf5 4. Bb5+ Nbd7 *

[ECO "A45"]

1. d4 Nf6 2. c3 d5 3. Nf3 Bf5 4. Bf4 Nbd7 *

[ECO "D04"]

1. d4 Nf6 2. Nf3 d5 3. e3 Bf5 4. Nbd2 Nbd7 *

[ECO "A42"]

1. c4 d6 2. e4 g6 3. d4 Bg7 4. Nc3 Nd7 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bf5 3. Bb2 Nd7 4. g3 Ngf6 *

[ECO "A06"]

1. Nf3 d5 2. e3 Nf6 3. b3 Bf5 4. Nc3 Nbd7 *

[ECO "D00"]

1. d4 d5 2. h4 Nf6 3. Nc3 Bf5 4. Bg5 Nbd7 *

[ECO "A45"]

1. d4 Nf6 2. c3 d5 3. Bg5 Bf5 4. Nf3 Nbd7 *

[ECO "A00"]

1. b4 d5 2. Bb2 Nf6 3. e3 Bg4 4. Nf3 Nbd7 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 Bg4 4. c4 Nbd7 *

[ECO "A45"]

1. d4 Nf6 2. g3 d5 3. Nf3 Bg4 4. c3 Nbd7 *

[ECO "D04"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bg4 4. Be2 Nbd7 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 Bf5 4. Ne5 Nbd7 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Ne5 Bf5 4. g3 Nbd7 *

[ECO "C25"]

1. e4 e5 2. Nc3 Nc6 3. Bc4 g6 4. Nf3 Bg7 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nc6 3. e3 Bg4 4. Bb5 a6 *

[ECO "D00"]

1. d4 d5 2. g3 Bf5 3. c3 Nc6 4. Qb3 b6 *

[ECO "A13"]

1. c4 e6 2. Nf3 b6 3. g3 Nc6 4. Bg2 Ba6 *

[ECO "C00"]

1. e4 e6 2. Qe2 b6 3. d4 Ba6 4. c4 Nc6 *

[ECO "A04"]

1. Nf3 b5 2. e4 Bb7 3. Bxb5 Bxe4 4. O-O Nc6 *

[ECO "A04"]

1. Nf3 d6 2. c4 Bg4 3. Qb3 Nc6 4. Qxb7 Bd7 *

[ECO "D06"]

1. d4 d5 2. c4 Bf5 3. Qb3 e6 4. Qxb7 Nd7 *

[ECO "D06"]

1. d4 d5 2. c4 Bf5 3. Qb3 e5 4. Qxb7 Nd7 *

[ECO "B20"]

1. e4 c5 2. b3 b6 3. Nf3 Bb7 4. Bd3 Nc6 *

[ECO "B21"]

1. e4 c5 2. f4 b6 3. Nc3 Bb7 4. g3 Nc6 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 Bc5 *

[ECO "A04"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 b6 4. O-O Bb7 *

[ECO "B00"]

1. e4 b5 2. Bxb5 Bb7 3. d3 c6 4. Ba4 Na6 *

[ECO "C00"]

1. e4 e6 2. d4 b6 3. Nc3 Bb7 4. e5 Nc6 *

[ECO "A10"]

1. c4 b6 2. Nc3 Bb7 3. Nf3 e6 4. g3 Nc6 *

[ECO "C00"]

1. e4 e6 2. d4 b6 3. Bd3 Bb7 4. Ne2 Nc6 *

[ECO "B00"]

1. e4 b6 2. d4 e6 3. Bd3 Bb7 4. Qe2 Nc6 *

[ECO "A04"]

1. Nf3 b6 2. e4 Bb7 3. d3 Nc6 4. d4 e6 *

[ECO "A04"]

1. Nf3 b6 2. e4 Bb7 3. d3 e6 4. g3 Nc6 *

[ECO "A10"]

1. c4 b6 2. e4 Bb7 3. Nc3 e5 4. d3 Nc6 *

[ECO "A40"]

1. d4 b6 2. e4 Bb7 3. Bd3 Nc6 4. Nf3 Nb4 *

[ECO "C47"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. d4 Bb4 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. Nc3 Nc6 4. Bb5 Bd7 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 d6 4. c3 Bd7 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. h3 Bd7 *

[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Na3 Nc6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nf3 Bd7 4. Bc4 Nc6 *

[ECO "B52"]

1. Nf3 c5 2. e4 d6 3. Bb5+ Bd7 4. Bc4 Nc6 *

[ECO "A04"]

1. Nf3 c5 2. c4 d6 3. Nc3 Nc6 4. g3 Bd7 *

[ECO "B20"]

1. e4 c5 2. c4 d6 3. Ne2 Nc6 4. d4 Bd7 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 d6 4. d3 Bd7 *

[ECO "B20"]

1. e4 c5 2. Ne2 d6 3. g3 Nc6 4. Bg2 Bd7 *

[ECO "A28"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. a3 Be7 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Bf4 Bf5 4. e3 Nd7 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bf5 4. d3 Nd7 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bf5 4. O-O Nd7 *

[ECO "D00"]

1. Nc3 d5 2. d4 c6 3. Bg5 Bf5 4. e3 Nd7 *

[ECO "A11"]

1. c4 c6 2. b3 d5 3. Bb2 Bg4 4. d3 Nd7 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. e3 Bg4 4. c4 Nd7 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Bf4 Bg4 4. e3 Nd7 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. e3 Bg4 4. Nc3 Nd7 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. e3 Bg4 4. Nbd2 Nd7 *

[ECO "A00"]

1. g4 d5 2. b3 c6 3. e3 Bxg4 4. Qxg4 Nd7 *

[ECO "D01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 Nbd7 4. Nf3 g6 *

[ECO "A00"]

1. g3 d5 2. Bg2 c6 3. d3 Bg4 4. b3 Nd7 *

[ECO "A00"]

1. g3 d5 2. Bg2 c6 3. d3 Bg4 4. Nc3 Nd7 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bg4 4. c3 Nd7 *

[ECO "A00"]

1. g3 d5 2. d3 c6 3. Nf3 Bg4 4. Nbd2 Nd7 *

[ECO "B10"]

1. e4 c6 2. e5 d5 3. Nf3 Bg4 4. d4 Nd7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. c4 Nd7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Be2 Nd7 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 Nd7 4. d5 c6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 Nd7 4. g3 c6 *

[ECO "B12"]

1. e4 c6 2. d4 d6 3. Nf3 Bg4 4. Nc3 Nd7 *

[ECO "A49"]

1. d4 g6 2. Nf3 Nf6 3. g3 Bg7 4. Bg2 O-O *

[ECO "B21"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 Nd7 4. g3 c5 *

[ECO "A06"]

1. Nf3 d5 2. e3 c5 3. b3 Nc6 4. Bb5 Bg4 *

[ECO "D00"]

1. d4 d5 2. Bf4 c5 3. c3 Nc6 4. e3 Bf5 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bf5 3. Bb2 c5 4. e3 Nc6 *

[ECO "D00"]

1. d4 d5 2. Bf4 c5 3. e3 Nc6 4. Nf3 Bg4 *

[ECO "D06"]

1. d4 d5 2. c4 Bf5 3. cxd5 c6 4. dxc6 Nxc6 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. Nc3 Bg4 *

[ECO "B22"]

1. e4 c5 2. c3 d6 3. Nf3 Nc6 4. d4 Bg4 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bf5 4. d3 Na6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Ne2 Na6 *

[ECO "A35"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 Nd4 4. g3 Nxf3+ *

[ECO "A80"]

1. d4 f5 2. g4 d5 3. gxf5 Bxf5 4. Nc3 Nc6 *

[ECO "A40"]

1. d4 Nc6 2. Nf3 d6 3. e4 Bg4 4. Be3 g6 *

[ECO "D00"]

1. Nc3 d5 2. d4 Bf5 3. Bg5 h6 4. Bd2 Nc6 *

[ECO "A07"]

1. g3 d5 2. Nf3 Bg4 3. Ne5 h5 4. c4 Nc6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 Nc6 4. Nxc4 Be6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. e4 Be6 4. Nc3 Nc6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. e4 Be6 4. Na3 Nc6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. e3 Be6 4. Qc2 Nc6 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e3 Be6 4. Na3 Nc6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. c5 Nc6 4. Qa4 Bg4 *

[ECO "A04"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 d5 4. O-O e6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bg4 3. h3 Bf5 4. Nf3 Nc6 *

[ECO "A00"]

1. g4 d5 2. b3 Bxg4 3. h3 Bf5 4. Nf3 Nc6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nc6 3. Bg5 Bg4 4. h3 Bxf3 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nc6 3. Bg5 Bg4 4. h3 Bh5 *

[ECO "A01"]

1. b3 d5 2. Bb2 Bg4 3. h3 Bh5 4. c4 Nc6 *

[ECO "A00"]

1. a3 Nc6 2. d4 d5 3. Bf4 Bg4 4. h3 Bh5 *

[ECO "A01"]

1. b3 d5 2. Bb2 Bg4 3. h3 Bh5 4. Nf3 Nc6 *

[ECO "A01"]

1. b3 d5 2. Bb2 Bg4 3. f3 Bh5 4. Nh3 Nc6 *

[ECO "A01"]

1. b3 d5 2. Bb2 Bg4 3. g3 Nc6 4. h3 Bh5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bg4 3. c4 Bxf3 4. exf3 Nc6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 d6 4. O-O Bg4 *

[ECO "A04"]

1. Nf3 Nc6 2. d4 d6 3. Nc3 d5 4. Bf4 Bg4 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nc6 3. e3 Bg4 4. h3 Bxf3 *

[ECO "A06"]

1. b3 d5 2. Nf3 Bg4 3. e3 Nc6 4. h3 Bxf3 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. Bb2 Bxf3 4. exf3 Nc6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. Bb2 Bxf3 4. gxf3 Nc6 *

[ECO "A07"]

1. g3 d5 2. Nf3 Bf5 3. c4 dxc4 4. Nc3 Nc6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bf5 3. Bg2 Nc6 4. c4 dxc4 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. c4 Nc6 4. Nf3 dxc4 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nc6 3. Bg2 Bg4 4. c4 dxc4 *

[ECO "A07"]

1. g3 d5 2. Nf3 Bg4 3. b3 Nc6 4. Bb2 d4 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bf5 3. e3 Nc6 4. Bb5 e6 *

[ECO "A06"]

1. Nf3 d5 2. e3 Bg4 3. d4 Nc6 4. Bb5 e6 *

[ECO "B00"]

1. e4 Nc6 2. d4 d5 3. e5 Bf5 4. Bb5 e6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bf5 3. Bf4 e6 4. Nc3 Nc6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bf5 3. e3 e6 4. Bd3 Nc6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nc6 3. Bf4 Bf5 4. e3 e6 *

[ECO "D02"]

1. d3 Nc6 2. d4 d5 3. Nf3 Bf5 4. Bf4 e6 *

[ECO "D00"]

1. d4 d5 2. a3 Nc6 3. Nc3 Bf5 4. Bf4 e6 *

[ECO "D00"]

1. d4 d5 2. a3 Nc6 3. Nf3 Bf5 4. Bf4 e6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nc6 3. b3 Bf5 4. g3 e6 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. e3 b6 4. Nbd2 Bb7 *

[ECO "D00"]

1. Nc3 d5 2. d4 Nc6 3. Nf3 Bf5 4. e3 e6 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. Nc3 e6 4. g3 Nc6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nc6 3. Bf4 Bg4 4. Nc3 e6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Nc6 3. Bb2 Bg4 4. d4 e6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nc6 3. e3 Bg4 4. Nbd2 e6 *

[ECO "A01"]

1. b3 d5 2. Bb2 Bg4 3. g3 e6 4. Nf3 Nc6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. e3 Nc6 4. Bb5 e5 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. e3 e5 4. Bb2 Nc6 *

[ECO "D00"]

1. d4 d5 2. a3 Nc6 3. Nc3 Bf5 4. f3 e5 *

[ECO "C50"]

1. e4 e5 2. Bc4 Nc6 3. Nf3 d6 4. c3 Be6 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. c4 Nf6 4. Nc3 g6 *

[ECO "A25"]

1. c4 e5 2. Nc3 Nc6 3. g3 d6 4. Nf3 Be6 *

[ECO "A10"]

1. c4 d6 2. g3 e5 3. Nc3 Be6 4. d3 Nc6 *

[ECO "C25"]

1. e4 e5 2. Nc3 d6 3. Bc4 Be6 4. Bb3 Nc6 *

[ECO "B00"]

1. e4 Nc6 2. Nf3 d6 3. d4 Bg4 4. Be3 e6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. Nbd2 e6 4. e4 Nc6 *

[ECO "B00"]

1. Nf3 Nc6 2. e4 e6 3. d4 d5 4. Nbd2 Bd7 *

[ECO "B00"]

1. e4 d6 2. Nc3 e5 3. Bc4 Nc6 4. Nf3 Bd7 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 d6 4. d4 Bd7 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. c5 Nc6 4. Qa4 Bd7 *

[ECO "A01"]

1. b3 d5 2. Bb2 Bg4 3. g3 Nc6 4. h3 Bd7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 a6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nc6 3. c4 d4 4. Qa4 Bd7 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nc6 3. c4 dxc4 4. Qa4 Bd7 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 Nd7 4. Qb3 e5 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 Nd7 4. g3 e5 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. g3 Nd7 4. Bg2 e5 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. g3 Be6 4. d3 Nd7 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. e3 e6 4. c4 Nd7 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. Bb2 Nd7 4. c4 e6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. b3 Nd7 4. Bb2 e6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. Bb2 Nd7 4. e3 e5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nd2 e6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. b3 Nd7 4. Bg2 e5 *

[ECO "D06"]

1. d4 d5 2. c4 Bf5 3. Qb3 Nd7 4. Nc3 e5 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. c4 Nd7 4. g3 g6 *

[ECO "A01"]

1. b3 d5 2. Bb2 Bg4 3. f3 Bh5 4. e3 Nd7 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. Bb2 Bxf3 4. exf3 Nd7 *

[ECO "A06"]

1. b4 d5 2. Nf3 Bg4 3. Ne5 Bf5 4. e3 Nd7 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. Ne5 Bf5 4. Bg2 Nd7 *

[ECO "D06"]

1. d4 d5 2. c4 Bf5 3. Qb3 Nd7 4. Nf3 dxc4 *

[ECO "D07"]

1. c4 Nc6 2. d4 d5 3. cxd5 Qxd5 4. e3 Bf5 *

[ECO "A03"]

1. f4 d5 2. d3 Nc6 3. Nf3 Bg4 4. Nbd2 Qd6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. a3 e6 *

[ECO "D00"]

1. d4 d5 2. g3 Bf5 3. c3 Nc6 4. Qb3 Qd7 *

[ECO "D00"]

1. d4 d5 2. e3 Bf5 3. Bd3 Qd7 4. Nc3 Nc6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bf5 3. Bg2 Nc6 4. d3 Qd7 *

[ECO "B00"]

1. e4 Nc6 2. d4 d5 3. e5 Bf5 4. c3 Qd7 *

[ECO "A10"]

1. c4 b6 2. d4 Bb7 3. d5 e6 4. a3 Bd6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. e3 Bb7 4. Nf3 Bd6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. e4 Bb7 4. f3 Bd6 *

[ECO "A04"]

1. Nf3 b6 2. e4 Bb7 3. d3 e6 4. g3 Bb4+ *

[ECO "A10"]

1. c4 b6 2. Nc3 e6 3. e4 Bb7 4. g3 Bb4 *

[ECO "A40"]

1. d4 e6 2. Nf3 b6 3. c4 Bb7 4. Bf4 Bb4+ *

[ECO "A04"]

1. Nf3 c5 2. c4 Nf6 3. g3 e6 4. d4 cxd4 *

[ECO "B10"]

1. e4 c6 2. c4 d5 3. cxd5 cxd5 4. exd5 Qxd5 *

[ECO "A13"]

1. c4 e6 2. Nc3 b6 3. d4 Bb7 4. Qc2 Bb4 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. e3 Bb7 4. Nf3 Bb4+ *

[ECO "A40"]

1. c4 e6 2. d4 b6 3. e4 Bb7 4. Nd2 Bb4 *

[ECO "A40"]

1. c4 b6 2. d4 e6 3. e4 Bb7 4. Qc2 Bb4+ *

[ECO "A04"]

1. Nf3 e6 2. g3 b5 3. Bg2 Bb7 4. d4 Be7 *

[ECO "A40"]

1. d4 g6 2. e3 Bg7 3. b4 b6 4. Nf3 Bb7 *

[ECO "A40"]

1. d4 b6 2. Nf3 Bb7 3. g3 g6 4. c4 Bg7 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. c4 b6 4. Nc3 Bb7 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nf3 b6 4. c4 Bb7 *

[ECO "A40"]

1. d4 b6 2. Nf3 Bb7 3. g3 g6 4. Nc3 Bg7 *

[ECO "A04"]

1. Nf3 g6 2. e4 Bg7 3. d4 c5 4. Nc3 cxd4 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 g6 4. Nbd2 Bg7 *

[ECO "D00"]

1. d4 d5 2. Bf4 Be6 3. Nc3 g6 4. g3 Bg7 *

[ECO "A06"]

1. Nf3 d5 2. e3 g6 3. d4 Bf5 4. Bd3 Bg7 *

[ECO "D00"]

1. d4 d5 2. g3 Bf5 3. c3 e6 4. Nf3 Bd6 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. h3 e6 4. Nc3 Bd6 *

[ECO "A06"]

1. b4 d5 2. Nf3 Bg4 3. d3 e6 4. c3 Bd6 *

[ECO "C23"]

1. e4 e5 2. Bc4 Bc5 3. Nc3 d6 4. d3 Be6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bf5 3. Nc3 e6 4. e3 Bb4 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bf5 3. e3 e6 4. Bd3 Bb4+ *

[ECO "D00"]

1. d4 d5 2. Nc3 Bf5 3. f3 e5 4. dxe5 Bb4 *

[ECO "A17"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 Bb4 4. g3 b6 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. Bf4 Bd6 4. e3 Bd7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 b5 3. Bg5 Bb7 4. e3 a6 *

[ECO "A04"]

1. Nf3 b5 2. d4 Nf6 3. e3 a6 4. Bd3 Bb7 *

[ECO "B00"]

1. e4 a6 2. d4 b5 3. Nf3 Bb7 4. Bd3 Nf6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Nf6 3. e3 Bf5 4. c4 a5 *

[ECO "A00"]

1. a4 a5 2. Nc3 d5 3. d4 Bf5 4. f3 Nf6 *

[ECO "A00"]

1. b4 d5 2. Bb2 Nf6 3. a3 a5 4. Nf3 Bg4 *

[ECO "A00"]

1. b4 d5 2. Bb2 Nf6 3. a3 a5 4. b5 Bg4 *

[ECO "D02"]

1. Nf3 d5 2. d4 a6 3. Nc3 Nf6 4. Bf4 Bf5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 a6 3. Bf4 d5 4. e3 Bg4 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. c4 Bg7 4. Bg2 c6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 a6 4. e3 Bg4 *

[ECO "D06"]

1. d4 d5 2. c4 Bf5 3. Qb3 b6 4. cxd5 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. c3 e6 4. e3 Ba6 *

[ECO "E12"]

1. c4 e6 2. d4 Nf6 3. Nf3 b6 4. h3 Ba6 *

[ECO "A40"]

1. c4 b6 2. d4 e6 3. Nf3 Ba6 4. Qc2 Nf6 *

[ECO "A10"]

1. c4 b6 2. Nc3 e6 3. d4 Nf6 4. e4 Ba6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. c3 b6 4. Bf4 Ba6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. Nc3 Bb7 4. d4 Bxf3 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. Bf4 Ba6 4. Nbd2 c5 *

[ECO "B22"]

1. e4 c5 2. c3 b6 3. d4 Bb7 4. dxc5 Nf6 *

[ECO "A34"]

1. c4 c5 2. Nc3 g6 3. Nf3 Bg7 4. e3 Nf6 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 c5 3. c3 b6 4. Bg5 Bb7 *

[ECO "A30"]

1. c4 c5 2. Nf3 b6 3. b3 Nf6 4. Bb2 Bb7 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. b3 b6 4. Nc3 Bb7 *

[ECO "A15"]

1. c4 Nf6 2. g3 c5 3. Nf3 b6 4. d3 Bb7 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 b6 3. d4 Bb7 4. Qc2 c5 *

[ECO "A30"]

1. c4 c5 2. Nf3 b6 3. e3 Nf6 4. d4 Bb7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c5 3. e3 b6 4. Nc3 Bb7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c5 3. e3 b6 4. Bd3 Bb7 *

[ECO "B20"]

1. e4 c5 2. b3 b6 3. g3 Bb7 4. Bg2 Nf6 *

[ECO "A01"]

1. b3 c5 2. Bb2 Nf6 3. e3 b6 4. f4 Bb7 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. e3 Nf6 4. b3 Be7 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 b6 3. e3 Bb7 4. Bb2 c5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b6 3. d3 Bb7 4. Bg2 c5 *

[ECO "A40"]

1. d4 b5 2. e4 Bb7 3. Bd3 Nf6 4. Bxb5 c5 *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 Bb7 *

[ECO "A00"]

1. g3 c5 2. Nf3 b5 3. d4 Bb7 4. dxc5 Nf6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 b5 3. Bg5 Bb7 4. Nbd2 c5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. Bg2 Bb7 4. d4 c5 *

[ECO "A40"]

1. d4 b5 2. e4 Bb7 3. Bd3 Nf6 4. Qe2 c5 *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nd2 Bb7 *

[ECO "A00"]

1. a3 g6 2. c3 d5 3. d4 Bg7 4. Nf3 Nf6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. d3 Bb7 4. e4 d6 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. Nbd2 Bb7 4. e3 d6 *

[ECO "A40"]

1. d4 b6 2. e4 Bb7 3. Bd3 Nf6 4. Nd2 d6 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. Nc3 Bb7 4. Bg5 d5 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. e3 Bb7 4. Bd3 d5 *

[ECO "A04"]

1. Nf3 b6 2. b3 Bb7 3. e3 Nf6 4. Nc3 d5 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. Nc3 d5 4. Ne5 Bb7 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. Bg2 Bb7 4. d3 d6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. Bg2 Bb7 4. d3 d5 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. e3 b6 4. Bb5 Bb7 *

[ECO "E40"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 *

[ECO "A45"]

1. d4 Nf6 2. c3 b6 3. Bg5 Bb7 4. Nd2 e6 *

[ECO "A40"]

1. d4 e6 2. Bf4 Nf6 3. Bg5 b6 4. c3 Bb7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 b6 4. e3 Bb7 *

[ECO "A00"]

1. b4 e6 2. Bb2 Nf6 3. a3 b6 4. e3 Bb7 *

[ECO "A10"]

1. c4 b6 2. b3 Bb7 3. Bb2 e6 4. e3 Nf6 *

[ECO "A13"]

1. c4 e6 2. Nc3 b6 3. b3 Bb7 4. Bb2 Nf6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 b6 3. d3 Bb7 4. Nc3 e6 *

[ECO "A17"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 b6 4. a3 Bb7 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Bf4 Nf6 4. e3 Bb7 *

[ECO "E12"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. b3 Bb7 *

[ECO "A10"]

1. c4 f5 2. g3 Nf6 3. Bg2 g6 4. Nc3 Bg7 *

[ECO "A13"]

1. c4 e6 2. Nc3 b6 3. d4 Bb7 4. e3 Nf6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Be2 Bb7 *

[ECO "A40"]

1. d4 e6 2. a3 Nf6 3. Nf3 b6 4. Nc3 Bb7 *

[ECO "A00"]

1. h3 b6 2. e4 e6 3. Nc3 Bb7 4. Nf3 Nf6 *

[ECO "A01"]

1. b3 Nf6 2. Bb2 b6 3. e3 Bb7 4. f4 e6 *

[ECO "A02"]

1. f4 b6 2. Nf3 Bb7 3. e3 e6 4. Nc3 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 b6 3. Bb2 Bb7 4. Nc3 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b6 3. d3 Bb7 4. Bg2 e6 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 b6 3. d4 Bb7 4. d5 e5 *

[ECO "A10"]

1. c4 b6 2. e4 Bb7 3. Nc3 e5 4. Nf3 Nf6 *

[ECO "D24"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Nc3 a6 *

[ECO "A10"]

1. c4 b6 2. b3 Bb7 3. Bb2 Nf6 4. Nc3 e5 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. Bg2 e5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b6 3. d4 Bb7 4. c4 e5 *

[ECO "C26"]

1. e4 e5 2. Nc3 Nf6 3. g3 b6 4. Bg2 Bb7 *

[ECO "A04"]

1. Nf3 b6 2. g3 Bb7 3. Bg2 e5 4. d3 Nf6 *

[ECO "B00"]

1. e4 b5 2. Bxb5 Bb7 3. Nc3 Nf6 4. d3 e6 *

[ECO "A05"]

1. g3 Nf6 2. Nf3 b5 3. Bg2 Bb7 4. b3 e6 *

[ECO "A40"]

1. d4 b6 2. c4 e6 3. Nf3 Bb7 4. a3 Ne7 *

[ECO "A47"]

1. Nf3 Nf6 2. d4 b6 3. Bg5 Bb7 4. Nbd2 g6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. e3 Bb7 4. Be2 g6 *

[ECO "B44"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 *

[ECO "C05"]

1. d4 d5 2. Nd2 e6 3. e4 Nf6 4. e5 Nfd7 *

[ECO "A43"]

1. d4 c5 2. d5 f5 3. Nf3 Nf6 4. c4 g6 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. c4 Bb7 4. e3 g6 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. Nbd2 Bb7 4. e3 g6 *

[ECO "A04"]

1. Nf3 b6 2. g3 Bb7 3. Bg2 g6 4. Nc3 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b6 3. d3 Bb7 4. Bg2 g6 *

[ECO "A10"]

1. c4 b6 2. d4 Bb7 3. Bg5 Nf6 4. Bxf6 gxf6 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. Bg5 Bb7 4. Bxf6 gxf6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 b5 3. Bg5 Bb7 4. Nbd2 g6 *

[ECO "A45"]

1. d4 Nf6 2. c3 b6 3. Bg5 Bb7 4. Nd2 h6 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. Bg5 Bb7 4. Nbd2 h6 *

[ECO "A10"]

1. c4 b6 2. d4 Bb7 3. Bg5 h6 4. Bd2 Nf6 *

[ECO "A40"]

1. d4 b6 2. e4 Bb7 3. Nd2 Nf6 4. e5 Nd5 *

[ECO "A00"]

1. h3 b6 2. e4 Bb7 3. Nc3 Nf6 4. e5 Nd5 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 b6 3. e4 Bb7 4. e5 Ne4 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. Bg5 Ne4 4. Bf4 Bb7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 b5 3. Bg5 Bb7 4. e3 b4 *

[ECO "A40"]

1. d4 b5 2. e4 Bb7 3. Bd3 Nf6 4. a4 b4 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. c3 Bb7 4. a4 b4 *

[ECO "A04"]

1. Nf3 b5 2. d4 Bb7 3. c3 Nf6 4. e4 Nxe4 *

[ECO "A40"]

1. d4 b5 2. e4 Bb7 3. Bd3 Nf6 4. Nf3 Nxe4 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c6 3. Qa4 d6 4. d4 Bd7 *

[ECO "B10"]

1. e4 c6 2. Nc3 d5 3. d3 e5 4. g3 Nf6 *

[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. c4 Nf6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. Bb5+ Bd7 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. b3 Nf6 4. Bb5+ Bd7 *

[ECO "B21"]

1. e4 c5 2. f4 d6 3. Nf3 Nf6 4. Bb5+ Bd7 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Bb5+ Bd7 4. a4 Nf6 *

[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bc4 Nf6 *

[ECO "B22"]

1. e4 c5 2. c3 d5 3. exd5 Nf6 4. Bb5+ Bd7 *

[ECO "B20"]

1. e4 c5 2. g3 d5 3. exd5 Nf6 4. Bb5+ Bd7 *

[ECO "A05"]

1. Nf3 Nf6 2. e3 c5 3. Bc4 d5 4. Bb5+ Bd7 *

[ECO "D00"]

1. Nc3 d5 2. d4 Nf6 3. Nf3 c6 4. a3 Be6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Nf3 Bg4 4. Bb5+ c6 *

[ECO "A02"]

1. f4 Nf6 2. Nf3 d5 3. e3 Bf5 4. Bb5+ c6 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. c4 Nf6 4. cxd5 c6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Nf3 Bg4 4. d4 c6 *

[ECO "A11"]

1. c4 c6 2. f4 d5 3. Nf3 Nf6 4. e3 Bf5 *

[ECO "A00"]

1. g3 d5 2. Bg2 Nf6 3. d3 Bf5 4. c4 c6 *

[ECO "D04"]

1. d4 Nf6 2. Nf3 d5 3. e3 c6 4. Bd2 Bf5 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nf3 c6 4. e3 Bf5 *

[ECO "A00"]

1. g3 Nf6 2. Bg2 d5 3. f4 c6 4. Nf3 Bf5 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bf5 3. Bb2 Nf6 4. d3 c6 *

[ECO "A01"]

1. b3 d5 2. Bb2 Nf6 3. h3 c6 4. Nf3 Bf5 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. c3 Bf5 *

[ECO "A45"]

1. d4 Nf6 2. c3 d5 3. Bg5 c6 4. Nd2 Bf5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. Nd2 c6 4. Ngf3 Bf5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. e3 c6 4. Nd2 Bg4 *

[ECO "D00"]

1. d4 d5 2. Bg5 c6 3. Nf3 Bg4 4. Nbd2 Nf6 *

[ECO "A06"]

1. Nf3 d5 2. e3 Nf6 3. c4 c6 4. b4 Bg4 *

[ECO "A00"]

1. g4 d5 2. Bg2 Bxg4 3. c4 c6 4. Qb3 Nf6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c6 3. e3 d5 4. Qc2 Bg4 *

[ECO "A45"]

1. d4 Nf6 2. g3 c6 3. Bg2 d5 4. c4 Bg4 *

[ECO "A80"]

1. d4 f5 2. Nc3 Nf6 3. Bg5 d5 4. e3 e6 *

[ECO "A45"]

1. d4 Nf6 2. Nc3 d5 3. Nf3 c6 4. Bf4 Bg4 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c6 3. c3 d5 4. Bf4 Bg4 *

[ECO "D00"]

1. d4 d5 2. Bf4 Nf6 3. e3 c6 4. Nd2 Bg4 *

[ECO "D00"]

1. d4 d5 2. e3 c6 3. Bd3 Nf6 4. f4 Bg4 *

[ECO "A45"]

1. d4 Nf6 2. g3 d5 3. Bg2 c6 4. Nd2 Bg4 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. d3 Bg4 4. Nbd2 Nf6 *

[ECO "A00"]

1. g3 d5 2. Bg2 Nf6 3. d3 c6 4. Nd2 Bg4 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. e5 Nh6 4. Nc3 Bg4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Bd3 Nh6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Be2 Nh6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. c5 Nd5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 c6 3. Bg2 d6 4. c4 Bg4 *

[ECO "A41"]

1. d4 d6 2. Nf3 c6 3. c4 Bg4 4. e4 Nf6 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. Nbd2 Nf6 4. c3 c6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. Qd3 c6 4. e4 Nf6 *

[ECO "B12"]

1. d4 c6 2. e4 d6 3. Nf3 Bg4 4. Be2 Nf6 *

[ECO "A04"]

1. Nf3 c5 2. b3 Nf6 3. Bb2 d6 4. e3 Bf5 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. e3 Nf6 4. c4 c5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. c4 Bg4 4. Nbd2 c5 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. d4 Bg4 4. e3 c5 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. Bd3 Bg4 4. Nf3 c5 *

[ECO "D11"]

1. Nf3 d5 2. d4 c6 3. c4 dxc4 4. e3 b5 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d6 3. e4 c5 4. Be2 Bg4 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bf5 3. Bb2 c5 4. e3 Nf6 *

[ECO "D04"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bg4 4. Bd3 c5 *

[ECO "D04"]

1. d4 Nf6 2. Nf3 d5 3. e3 c5 4. Nbd2 Bg4 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 Bf5 4. g3 g6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 d6 3. e3 g6 4. d4 Bf5 *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. Bf4 d6 4. Nc3 Bf5 *

[ECO "A04"]

1. Nf3 d6 2. d4 Nf6 3. Nc3 Bf5 4. e3 g6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. c4 Bg4 4. Nbd2 g6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. d4 Bg4 4. e3 g6 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. Nc3 c6 4. f4 d5 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c3 Nf6 4. Nbd2 g6 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. Nf3 Nf6 4. Bd3 Bg4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. e3 g6 4. Nf3 Be6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Be6 3. Nc3 g6 4. e4 Nf6 *

[ECO "E60"]

1. Nf3 Nf6 2. d4 g6 3. c4 d5 4. cxd5 Bf5 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. b4 d5 4. e3 Bf5 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d5 3. d4 g6 4. g3 Bf5 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 g6 4. e3 Bf5 *

[ECO "A02"]

1. f4 Nf6 2. Nf3 g6 3. Nc3 d5 4. e3 Bf5 *

[ECO "D00"]

1. d4 d5 2. Bg5 Nf6 3. e3 g6 4. Nf3 Bg4 *

[ECO "B06"]

1. e4 g6 2. d4 c6 3. f4 d5 4. e5 h5 *

[ECO "A02"]

1. f4 Nf6 2. Nf3 g6 3. e3 d5 4. d4 Bg4 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d6 3. d4 Bf5 4. h3 h6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. Bg5 Bg4 4. Nc3 h6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Be6 3. Nc3 Nf6 4. Nf3 h6 *

[ECO "A45"]

1. d4 Nf6 2. h3 h6 3. Nc3 d5 4. Bf4 Bf5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bf5 3. Bg5 h6 4. Bf4 Nf6 *

[ECO "D00"]

1. d4 d5 2. Bg5 h6 3. Bh4 Nf6 4. e3 Bf5 *

[ECO "D00"]

1. Nc3 d5 2. d4 Bf5 3. Bg5 h6 4. Bd2 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Bf5 4. Nc3 h6 *

[ECO "A00"]

1. Nc3 d5 2. Nf3 Nf6 3. d4 Bf5 4. Bg5 h6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. g3 Bb4 4. Bg2 O-O *

[ECO "D02"]

1. d4 d5 2. Nf3 c5 3. c4 e6 4. cxd5 exd5 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bg4 3. Nc3 Nf6 4. Qd2 h6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Bg4 4. Ne5 h5 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. d4 Bg4 4. h3 Bf5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. Bg5 Bg4 4. h3 Bxf3 *

[ECO "A53"]

1. c4 Nf6 2. d4 d6 3. Nf3 Bg4 4. Qb3 Bxf3 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 d6 3. d4 Bg4 4. h3 Bxf3 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. e4 Nf6 4. h3 Bxf3 *

[ECO "B03"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Be2 Bf5 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 Bf5 4. g3 Ne4 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 d6 3. Bf4 Nh5 4. Bd2 Bg4 *

[ECO "A00"]

1. g3 c5 2. Bg2 Nc6 3. e4 g6 4. Ne2 Bg7 *

[ECO "D02"]

1. Nf3 d5 2. d4 Bf5 3. Nh4 Be6 4. Nc3 Nf6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bg4 3. Nc3 Nf6 4. Ne5 Be6 *

[ECO "A45"]

1. d4 Nf6 2. g3 d5 3. Nf3 Bg4 4. Ne5 Be6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Bg4 4. Ne5 Be6 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e3 Be6 4. Nc3 Nf6 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. c4 Bf5 4. cxd5 Bxb1 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. c4 Nf6 4. cxd5 Bxb1 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bg4 3. h3 Bf5 4. Nc3 Nf6 *

[ECO "A00"]

1. Nc3 Nf6 2. Nf3 d6 3. d4 Bf5 4. g3 d5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. Nc3 d5 4. Bg5 Bf5 *

[ECO "A10"]

1. c4 g6 2. d4 Bg7 3. e4 Nc6 4. Nf3 d6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bg4 3. Nc3 Nf6 4. f3 Bh5 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 Nf6 4. h3 Bh5 *

[ECO "A06"]

1. b4 d5 2. Nf3 Bg4 3. Nc3 Nf6 4. h3 Bxf3 *

[ECO "A06"]

1. b4 d5 2. Nf3 Bg4 3. h3 Bxf3 4. exf3 Nf6 *

[ECO "A06"]

1. b4 d5 2. Nf3 Bg4 3. Bb2 Bxf3 4. exf3 Nf6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. Bb2 Nf6 4. c4 Bxf3 *

[ECO "D04"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bg4 4. c4 Bxf3 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. d4 Bg4 4. e3 d5 *

[ECO "D00"]

1. d4 d5 2. e3 Nf6 3. c3 Bf5 4. Bd3 Bxd3 *

[ECO "D04"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bg4 4. Nbd2 Bxf3 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 e6 4. Be2 Nf6 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. Bf4 Bf5 4. Nh4 Be4 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 Bf5 4. Bd3 Bxd3 *

[ECO "A06"]

1. b3 d5 2. Nf3 Nf6 3. Bb2 Bf5 4. Nh4 Bg4 *

[ECO "A06"]

1. b3 d5 2. Nf3 Bg4 3. Bb2 Nf6 4. h3 Bxf3 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. b3 Bg4 4. Ne5 Bh5 *

[ECO "A00"]

1. Nc3 Nf6 2. Nf3 d5 3. d4 Bg4 4. Ne5 Bh5 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 Bg4 4. Ne5 Bh5 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. Bf4 Bg4 4. Ne5 Bf5 *

[ECO "A06"]

1. Nf3 d5 2. e3 Nf6 3. Be2 Bf5 4. c4 dxc4 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. Bf4 Bf5 4. c4 dxc4 *

[ECO "D07"]

1. d4 d5 2. c4 Nc6 3. Nc3 dxc4 4. Nf3 Nf6 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. c4 Bf5 4. Qb3 dxc4 *

[ECO "D25"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bf5 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nf3 Bf5 4. c4 dxc4 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. b3 Nxd5 4. Bb2 Bf5 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. Nf3 Bf5 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d5 3. d4 Ne4 4. e3 Bf5 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d5 3. d4 Ne4 4. Bb2 Bf5 *

[ECO "D04"]

1. Nf3 d5 2. d4 Nf6 3. e3 Bf5 4. Bd3 Ne4 *

[ECO "A06"]

1. Nf3 d5 2. e3 Bf5 3. d4 Nf6 4. Be2 Ne4 *

[ECO "D03"]

1. d4 d5 2. Nf3 Nf6 3. Bg5 Ne4 4. Bc1 Bf5 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. Bb2 e5 4. c4 Bg4 *

[ECO "A53"]

1. c4 Nf6 2. d4 d6 3. Nc3 Bf5 4. g3 e5 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. g3 Be6 4. Nf3 Nf6 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. Nc3 Be6 4. d3 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. d4 Bg4 4. c4 e6 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nf3 Bg4 4. Nc3 e6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. c4 Bg4 4. Nbd2 e6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. e4 e6 4. c4 Nf6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. b3 Bg4 4. Qd3 e6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. d4 Bg4 4. Nc3 e6 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 Nc6 4. e5 b6 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. e3 Nf6 4. Nc3 e6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. g3 e6 4. Bg2 Nf6 *

[ECO "A00"]

1. g3 d5 2. d3 e5 3. Bg2 Be6 4. c4 Nf6 *

[ECO "A00"]

1. g3 e5 2. Bg2 Nf6 3. d3 d5 4. c3 Be6 *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 Nf6 4. dxe6 Bxe6 *

[ECO "A00"]

1. g3 Nf6 2. Bg2 d5 3. d3 Bf5 4. c4 e6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bf5 3. e3 Nf6 4. c4 e6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. c4 Bf5 4. Qb3 e6 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. Nf3 e6 4. c4 Nf6 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. Nf3 Nf6 4. Bf4 e6 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nc6 *

[ECO "A45"]

1. d4 Nf6 2. Be3 d5 3. Nc3 Bf5 4. Nf3 e6 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. Nc3 Bf5 4. h3 e6 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. c3 Bf5 4. Nbd2 e6 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nc3 Bf5 4. g3 e6 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. e3 Bf5 4. Bd3 e6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 Bf5 4. d3 e6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. g3 Bf5 4. Nc3 e6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. g3 Bf5 4. h3 e6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. h4 Bf5 4. Bg5 e6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. Nd2 Bf5 4. e3 e6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 e6 4. O-O Nd7 *

[ECO "A06"]

1. b4 d5 2. Nf3 Bg4 3. d3 Nf6 4. Nbd2 e6 *

[ECO "A06"]

1. Nf3 d5 2. e3 Nf6 3. b4 Bg4 4. Bb2 e6 *

[ECO "A02"]

1. f4 Nf6 2. Nf3 d5 3. e3 Bg4 4. c4 e6 *

[ECO "D04"]

1. Nf3 d5 2. d4 Nf6 3. e3 Bg4 4. c4 e6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 Bg4 4. Nc3 e6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 Bg4 4. Be2 e6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 Nf6 4. b3 e6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Nf6 3. Bb2 Bg4 4. g3 e6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 Bg4 4. Ne5 e6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Nf6 3. Bb2 Bg4 4. Nh4 e5 *

[ECO "B01"]

1. e4 e6 2. c4 d5 3. exd5 Nf6 4. dxe6 Bxe6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. e3 Bf5 4. Bxf6 exf6 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 e5 4. Ne2 Bd7 *

[ECO "D05"]

1. d4 e6 2. Nf3 Nf6 3. e3 d5 4. Nbd2 Bd7 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 Bd7 4. Be2 e6 *

[ECO "A81"]

1. d4 f5 2. g3 d6 3. Bg2 Nf6 4. d5 Bd7 *

[ECO "D02"]

1. Nf3 d5 2. d4 f5 3. e3 Nf6 4. Bb5+ Bd7 *

[ECO "A80"]

1. d4 f5 2. Nc3 Nf6 3. Bg5 d5 4. f3 Bd7 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c3 Nf6 4. h3 Bd7 *

[ECO "A03"]

1. e4 d6 2. f4 d5 3. exd5 Nf6 4. Bb5+ Bd7 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. d4 Bg4 4. f3 Bd7 *

[ECO "B24"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. e3 Bf5 4. cxd5 cxd5 *

[ECO "A41"]

1. d4 d6 2. Nf3 Nf6 3. Nc3 d5 4. Bf4 Bd7 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bg4 3. Nc3 Nf6 4. h3 Bd7 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Nc3 Bf5 4. Nh4 Bd7 *

[ECO "A01"]

1. b3 d5 2. Bb2 Bg4 3. f3 Bd7 4. f4 Nf6 *

[ECO "A02"]

1. f4 Nf6 2. Nf3 d5 3. e3 Bg4 4. h3 Bd7 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. Bf4 Bg4 4. Ne5 Bd7 *

[ECO "B02"]

1. e4 Nf6 2. Bc4 Nxe4 3. Nf3 d5 4. Bb5+ Bd7 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. f4 b5 4. d3 Bb7 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. g3 b6 4. Bg2 Bb7 *

[ECO "B00"]

1. e4 a6 2. d4 b5 3. Bd3 Bb7 4. Nd2 d6 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. Bf4 Bf5 4. e3 e6 *

[ECO "A04"]

1. Nf3 b5 2. d4 Bb7 3. Bg5 d5 4. e3 a6 *

[ECO "C00"]

1. e4 e6 2. d4 a6 3. Nf3 b5 4. a4 Bb7 *

[ECO "A04"]

1. Nf3 b5 2. c3 Bb7 3. e3 a6 4. a4 b4 *

[ECO "D11"]

1. d4 d5 2. c4 c6 3. Nf3 a6 4. e3 Bf5 *

[ECO "D02"]

1. d4 d5 2. Nf3 a6 3. g3 c6 4. Bg2 Bg4 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. Nf3 d6 4. g3 Bg4 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bf5 3. Bb2 c5 4. e3 a6 *

[ECO "A06"]

1. Nf3 d5 2. b4 Bg4 3. Bb2 Bxf3 4. gxf3 a6 *

[ECO "D02"]

1. Nf3 d5 2. d4 a6 3. Bf4 Bf5 4. e3 e6 *

[ECO "A06"]

1. b3 d5 2. Nf3 Bg4 3. Bb2 e6 4. e3 a6 *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. Nf3 Qa5 4. Nc3 Nf6 *

[ECO "C00"]

1. e4 e6 2. Nf3 d5 3. e5 Bd7 4. a3 a5 *

[ECO "C02"]

1. d4 e6 2. e4 d5 3. e5 Bd7 4. Be3 a6 *

[ECO "A13"]

1. c4 e6 2. Nf3 b6 3. g3 Ba6 4. b3 d5 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 b6 4. Bd3 Ba6 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. g3 b5 4. e3 Bd7 *

[ECO "A04"]

1. Nf3 e6 2. g3 b5 3. e4 Bb7 4. Bxb5 Bxe4 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. a3 f5 4. d5 Ba6 *

[ECO "B06"]

1. e4 g6 2. d4 b6 3. Nf3 Bb7 4. Bc4 Bxe4 *

[ECO "C00"]

1. e4 e6 2. Qe2 b6 3. Nf3 Ba6 4. c4 c5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. a3 Ba6 4. Qc2 c6 *

[ECO "B22"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. Nf3 Nf6 *

[ECO "A34"]

1. c4 c5 2. Nc3 b6 3. Nf3 Bb7 4. g3 Bxf3 *

[ECO "B22"]

1. e4 c5 2. c3 b6 3. d4 Bb7 4. Nf3 Bxe4 *

[ECO "A04"]

1. Nf3 c5 2. g3 b5 3. e4 Ba6 4. a4 b4 *

[ECO "B00"]

1. e4 b6 2. d4 Bb7 3. e5 e6 4. Nf3 c5 *

[ECO "B23"]

1. e4 c5 2. Nc3 b6 3. Nf3 Bb7 4. Bc4 e6 *

[ECO "A10"]

1. c4 b6 2. e4 Bb7 3. Nc3 c5 4. Bd3 e6 *

[ECO "A10"]

1. c4 b6 2. b3 c5 3. Bb2 Bb7 4. e3 e6 *

[ECO "A30"]

1. c4 c5 2. Nf3 b6 3. Nc3 Bb7 4. e3 e6 *

[ECO "A04"]

1. Nf3 b6 2. c4 Bb7 3. Nc3 e6 4. a3 c5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Nc3 Bb7 4. Qc2 c5 *

[ECO "A00"]

1. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nf6 4. Nf3 O-O *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Nf3 Bb7 4. e3 c5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. e4 Bb7 4. f3 c5 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. e3 b6 4. Nbd2 Bb7 *

[ECO "C00"]

1. d4 e6 2. e4 b6 3. Bd3 Bb7 4. Nc3 c5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. b3 b6 4. Bd3 Bb7 *

[ECO "B20"]

1. e4 c5 2. b3 b6 3. Bb2 Bb7 4. d3 e6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. Nf3 b6 4. g3 Bb7 *

[ECO "A04"]

1. Nf3 c5 2. b3 b6 3. Bb2 Bb7 4. e3 e6 *

[ECO "A04"]

1. Nf3 b6 2. g3 c5 3. Bg2 Bb7 4. d3 e6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 a5 4. Nf3 d6 *

[ECO "A04"]

1. Nf3 c5 2. g3 b6 3. Bg2 Bb7 4. O-O e6 *

[ECO "B23"]

1. e4 c5 2. Nc3 b6 3. g3 Bb7 4. Bg2 e5 *

[ECO "B22"]

1. e4 c5 2. c3 b6 3. d4 Bb7 4. e5 f6 *

[ECO "A10"]

1. c4 b6 2. b3 c5 3. Bb2 Bb7 4. f4 f5 *

[ECO "B22"]

1. e4 c5 2. c3 b6 3. d4 Bb7 4. Nd2 g6 *

[ECO "B23"]

1. e4 c5 2. Nc3 b6 3. g3 Bb7 4. Bg2 g6 *

[ECO "B22"]

1. e4 c5 2. c3 b6 3. Nf3 Bb7 4. d3 g6 *

[ECO "A04"]

1. Nf3 c5 2. g3 b6 3. e4 Bb7 4. d3 g6 *

[ECO "A34"]

1. c4 c5 2. Nc3 b6 3. Nf3 Bb7 4. g3 g5 *

[ECO "A34"]

1. c4 c5 2. Nc3 b6 3. e3 Bb7 4. d4 cxd4 *

[ECO "B10"]

1. e4 c6 2. d3 d5 3. Nd2 g6 4. Ngf3 Bg7 *

[ECO "A04"]

1. Nf3 b6 2. g3 c5 3. Bg2 Bb7 4. d3 d6 *

[ECO "A10"]

1. c4 b6 2. e4 Bb7 3. Nc3 e6 4. Nge2 d5 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. g3 b6 4. Bg2 Bb7 *

[ECO "A40"]

1. c4 e6 2. d4 b6 3. Nc3 Bb7 4. f3 d5 *

[ECO "A40"]

1. d4 e6 2. Nf3 b6 3. g3 Bb7 4. Bg2 d5 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 b6 4. c3 Bb7 *

[ECO "A40"]

1. d4 e6 2. Nf3 b6 3. e4 Bb7 4. Bd3 d5 *

[ECO "B00"]

1. e4 b6 2. d4 Bb7 3. f3 e6 4. Be3 d5 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Nd2 b6 4. d4 Bb7 *

[ECO "A04"]

1. Nf3 b6 2. e4 Bb7 3. Qe2 e6 4. g3 d5 *

[ECO "B07"]

1. d4 g6 2. e4 Bg7 3. c3 d6 4. Nf3 c6 *

[ECO "C00"]

1. e4 e6 2. f4 b6 3. Nf3 Bb7 4. Nc3 d5 *

[ECO "A40"]

1. d4 e6 2. g3 d5 3. Bg2 b5 4. e4 Bb7 *

[ECO "A40"]

1. c4 e6 2. d4 b6 3. a3 Bb7 4. d5 g6 *

[ECO "A10"]

1. c4 b6 2. e4 e6 3. g3 Bb7 4. Bg2 g6 *

[ECO "A13"]

1. c4 e6 2. Nf3 b6 3. g3 Bb7 4. Bg2 g6 *

[ECO "A40"]

1. d4 e6 2. Nf3 b6 3. c4 Bb7 4. e3 g6 *

[ECO "A13"]

1. c4 e6 2. Nc3 b6 3. d4 Bb7 4. e4 g6 *

[ECO "A40"]

1. c4 e6 2. d4 b6 3. e4 Bb7 4. f3 g6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. a3 g6 4. e4 Bb7 *

[ECO "C00"]

1. e4 e6 2. d4 b6 3. Nc3 Bb7 4. Bd3 g6 *

[ECO "C00"]

1. d4 e6 2. e4 b6 3. Nd2 Bb7 4. c3 g6 *

[ECO "C00"]

1. d4 e6 2. e4 b6 3. Nf3 Bb7 4. Nbd2 g6 *

[ECO "A04"]

1. Nf3 b6 2. g3 Bb7 3. Bg2 e6 4. O-O g6 *

[ECO "A13"]

1. c4 e6 2. Nf3 b6 3. g3 Bb7 4. Bg2 g5 *

[ECO "A10"]

1. c4 b6 2. d4 Bb7 3. Bg5 h6 4. Bf4 e6 *

[ECO "A04"]

1. Nf3 b6 2. e4 Bb7 3. d3 e6 4. g3 h6 *

[ECO "A00"]

1. d3 b5 2. c4 b4 3. Nf3 Bb7 4. e3 e6 *

[ECO "A04"]

1. Nf3 f5 2. g3 e6 3. d4 b6 4. d5 Bb7 *

[ECO "A10"]

1. c4 b6 2. e4 e6 3. Nc3 Bb7 4. Nge2 f5 *

[ECO "A10"]

1. c4 b6 2. Nf3 e6 3. Nc3 Bb7 4. a3 f5 *

[ECO "A17"]

1. Nf3 e6 2. c4 Nf6 3. Nc3 Bb4 4. Qb3 a5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Nc3 Bb7 4. e3 f5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Nc3 Bb7 4. a3 f5 *

[ECO "A04"]

1. Nf3 f5 2. b3 e6 3. g3 b6 4. Bg2 Bb7 *

[ECO "A04"]

1. Nf3 e6 2. g3 b6 3. Bg2 Bb7 4. O-O f5 *

[ECO "A10"]

1. c4 b6 2. d4 Bb7 3. Bg5 f6 4. Bd2 e6 *

[ECO "A40"]

1. d4 b6 2. e4 Bb7 3. Bd3 f5 4. d5 fxe4 *

[ECO "A04"]

1. Nf3 b5 2. e4 Bb7 3. Bxb5 Bxe4 4. Nc3 Bb7 *

[ECO "A12"]

1. Nf3 d5 2. b3 c6 3. c4 Bd7 4. Bb2 e6 *

[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Qe2 e5 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Bb5+ Bd7 4. a4 e5 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 a6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 c5 *

[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. a4 e5 *

[ECO "A43"]

1. d4 c5 2. d5 d6 3. Nc3 e5 4. e4 Bd7 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Bb5+ Bd7 4. a4 e6 *

[ECO "A43"]

1. e4 e6 2. d4 c5 3. d5 d6 4. Bb5+ Bd7 *

[ECO "C02"]

1. d4 e6 2. e4 d5 3. e5 c5 4. Nf3 Bd7 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 Bd7 4. Nd2 c5 *

[ECO "C00"]

1. e4 e6 2. f4 d5 3. e5 c5 4. Nf3 Bd7 *

[ECO "C00"]

1. e4 e6 2. Nf3 d5 3. e5 Bd7 4. Be2 c5 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Bb5+ Bd7 4. a4 g6 *

[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. a4 g6 *

[ECO "C26"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 Bc5 4. d3 d6 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bf5 4. Nh4 Bd7 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bg4 4. b3 f6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Be6 3. e3 g6 4. Bb5+ c6 *

[ECO "B12"]

1. e4 c6 2. d4 g6 3. Nf3 d5 4. e5 Bg4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. c3 g6 *

[ECO "D00"]

1. d4 d5 2. Bg5 h6 3. Bh4 c6 4. e3 Bf5 *

[ECO "A01"]

1. b3 d5 2. Bb2 Bg4 3. g3 c6 4. Bh3 h5 *

[ECO "A04"]

1. Nf3 c6 2. g3 d5 3. Bg2 Bg4 4. O-O h5 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. e5 h5 4. Nf3 Bg4 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nd2 h5 *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. b3 Bg7 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. e5 h5 4. Nf3 Bf5 *

[ECO "D02"]

1. Nf3 d5 2. d4 c6 3. g3 Bf5 4. Nh4 Be6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. g4 Be6 *

[ECO "B10"]

1. c4 c6 2. e4 d5 3. e5 dxc4 4. Nf3 Be6 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. c4 dxc4 4. e3 Be6 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e3 Be6 4. Ne2 c6 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e3 Be6 4. e4 c6 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. e3 Bf5 4. Nh4 Bg6 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. e3 Bf5 4. cxd5 Bxb1 *

[ECO "A11"]

1. c4 c6 2. b3 d5 3. Bb2 Bg4 4. h3 Bf5 *

[ECO "A31"]

1. Nf3 c5 2. c4 Nf6 3. d4 cxd4 4. Nxd4 a6 *

[ECO "A01"]

1. b3 d5 2. Bb2 Bg4 3. h3 Bh5 4. c4 c6 *

[ECO "A01"]

1. b3 d5 2. Bb2 Bg4 3. g3 c6 4. h3 Bh5 *

[ECO "A11"]

1. c4 c6 2. Nf3 d5 3. e3 Bg4 4. h3 Bxf3 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. c4 Bg4 4. h3 Bxf3 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bf5 3. c4 Bxb1 4. Rxb1 c6 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. c4 Bg4 4. d4 Bxf3 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Nbd2 Bf5 4. Nh4 Bg4 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. e3 Bg4 4. h3 Bxf3 *

[ECO "B11"]

1. e4 c6 2. Nf3 d5 3. Nc3 Bg4 4. Be2 Bxf3 *

[ECO "B10"]

1. e4 c6 2. Nc3 d6 3. f4 d5 4. Nf3 Bg4 *

[ECO "E12"]

1. c4 Nf6 2. Nf3 e6 3. d4 b6 4. Bg5 h6 *

[ECO "A07"]

1. g3 d5 2. Nf3 c6 3. Bg2 Bf5 4. Nh4 Bg4 *

[ECO "A06"]

1. Nf3 d5 2. b3 c6 3. e3 Bg4 4. h3 Bxf3 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. b3 Bg4 4. Ne5 Bf5 *

[ECO "A06"]

1. Nf3 d5 2. b3 c6 3. Bb2 Bg4 4. Ne5 Bf5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. c4 dxc4 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bf5 4. c4 dxc4 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bf5 4. Nc3 d4 *

[ECO "B10"]

1. e4 c6 2. b3 d5 3. Bb2 dxe4 4. Ne2 Bf5 *

[ECO "A11"]

1. c4 c6 2. Nf3 d5 3. g3 Bg4 4. d4 dxc4 *

[ECO "B11"]

1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. Be2 d4 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 b6 4. e3 e6 *

[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Qe2 Bxb5 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c4 Bg4 4. h3 Bxf3 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. b3 Bxf3 4. exf3 c5 *

[ECO "A21"]

1. c4 e5 2. Nc3 c6 3. g3 d5 4. e3 Be6 *

[ECO "A09"]

1. Nf3 d5 2. c4 c6 3. e3 Bf5 4. Nc3 e6 *

[ECO "D06"]

1. d4 d5 2. c4 Bf5 3. Nc3 e6 4. Bf4 c6 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. e3 Bf5 4. Be2 e6 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. Nf3 e6 4. c4 c6 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. e3 Bf5 4. h3 e6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bf5 3. e3 c6 4. Be2 e6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. e3 h6 *

[ECO "A12"]

1. Nf3 d5 2. b3 c6 3. c4 Bg4 4. e3 e6 *

[ECO "A12"]

1. Nf3 d5 2. b3 c6 3. c4 Bg4 4. Bb2 e6 *

[ECO "A11"]

1. c4 c6 2. Nf3 d5 3. g3 Bg4 4. d4 e6 *

[ECO "B11"]

1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. d3 e6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. b4 e6 *

[ECO "A00"]

1. g3 d5 2. Bg2 e5 3. d3 c6 4. Nc3 Bg4 *

[ECO "C23"]

1. e4 e5 2. Bc4 d6 3. Nf3 Bg4 4. c3 c6 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. Nc3 Bg4 4. Bg2 c6 *

[ECO "A21"]

1. c4 e5 2. Nc3 c6 3. Nf3 d6 4. g3 Be6 *

[ECO "A21"]

1. c4 e5 2. g3 d6 3. Nc3 c6 4. Bg2 Be6 *

[ECO "A80"]

1. d4 f5 2. Nc3 Nf6 3. Bg5 d5 4. f3 c5 *

[ECO "A20"]

1. c4 e5 2. g3 c6 3. d4 d6 4. Nc3 Be6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. e4 e6 4. c4 c6 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. e4 c6 4. Nc3 e6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nf3 e5 4. Bc4 Be6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. e4 e6 4. c4 c5 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 c5 4. Nc3 Be6 *

[ECO "D00"]

1. d4 d5 2. f4 Bf5 3. e3 e6 4. Nf3 c5 *

[ECO "D00"]

1. d4 d5 2. g3 Bf5 3. c3 e6 4. Nf3 c5 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. Nc3 e6 4. e3 c5 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. h3 e6 4. Nc3 c5 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. g3 g6 4. Nf3 c6 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. g3 e6 4. Nf3 c5 *

[ECO "A80"]

1. d4 f5 2. Bg5 d6 3. e3 Be6 4. Qf3 h6 *

[ECO "D00"]

1. d4 d5 2. Bg5 f6 3. Bh4 h5 4. f4 Bf5 *

[ECO "A07"]

1. g3 d5 2. Nf3 Bg4 3. Ne5 Bh5 4. Bg2 f6 *

[ECO "A06"]

1. Nf3 d5 2. b4 Bg4 3. Ne5 Bf5 4. d4 f6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. Ne5 Bf5 4. d4 f6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. Ne5 Bf5 4. Bg2 f6 *

[ECO "A80"]

1. d4 f5 2. g4 d5 3. gxf5 Bxf5 4. Bh3 Bxh3 *

[ECO "B00"]

1. e4 f6 2. Ke2 g5 3. Ke3 d5 4. c3 Bg4 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. g3 Bxf3 4. exf3 g6 *

[ECO "E61"]

1. d4 Nf6 2. c4 g6 3. Nc3 c6 4. e4 d6 *

[ECO "A40"]

1. d4 g6 2. Nc3 d5 3. e4 dxe4 4. Nxe4 Bf5 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 g6 4. e4 Bg4 *

[ECO "D00"]

1. d4 d5 2. e3 Bf5 3. g4 Bg6 4. h4 h5 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. Ne5 h5 4. Nxg4 hxg4 *

[ECO "A00"]

1. g3 d5 2. c4 dxc4 3. Qa4+ Bd7 4. Qxc4 Bc6 *

[ECO "A00"]

1. g3 d5 2. c4 dxc4 3. Qa4+ Bd7 4. Qxc4 Be6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bg4 3. Ne5 Bh5 4. g4 Bg6 *

[ECO "B01"]

1. e4 d5 2. Nc3 dxe4 3. Nxe4 Bf5 4. Ng3 Bg6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. e3 Be6 4. Nd4 Bd5 *

[ECO "A01"]

1. b3 d5 2. Bb2 Bg4 3. h3 Bh5 4. Nf3 Bxf3 *

[ECO "C16"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 b6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 Bg4 4. Bb2 Bxf3 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bf5 3. Bb2 e6 4. g3 h6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bf5 3. g3 e6 4. Bb2 h5 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. c4 e5 4. dxe5 Bxf3 *

[ECO "C00"]

1. e4 e6 2. d4 e5 3. dxe5 d6 4. Nf3 Bg4 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. d4 Bg4 4. dxe5 Bxf3 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. Bc4 Bg4 4. h3 Bh5 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. Nbd2 e5 4. h3 Bxf3 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 d6 4. Nc3 Be6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. Nbd2 e6 4. h3 Bh5 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. d3 e6 *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. e3 e6 4. h3 Bxf3 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. h3 Bxf3 4. exf3 e6 *

[ECO "C21"]

1. e4 e5 2. c3 d5 3. d4 exd4 4. Qxd4 Be6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bf5 3. e3 e6 4. g4 Bg6 *

[ECO "D00"]

1. Nc3 d5 2. d4 Bf5 3. f3 e6 4. e4 Bg6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bg4 3. h3 Bf5 4. e3 e6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bg4 3. h3 Bf5 4. Nf3 e6 *

[ECO "A00"]

1. b4 d5 2. Bb2 Bg4 3. h3 Bh5 4. c4 e6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bg4 3. Nc3 e6 4. f3 Bh5 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. e3 e6 4. h3 Bh5 *

[ECO "A20"]

1. c4 e5 2. g3 g6 3. d4 exd4 4. Qxd4 Nf6 *

[ECO "A00"]

1. g4 d5 2. b3 Bxg4 3. h3 Bh5 4. Bg2 e6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bf5 3. c4 Bxb1 4. Rxb1 e6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Bf5 3. e3 e6 4. Bd3 Bxd3 *

[ECO "D00"]

1. d4 d5 2. g3 Bf5 3. Nf3 e6 4. Nh4 Bg4 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. e3 e6 4. Bd3 Bxd3 *

[ECO "A06"]

1. b3 d5 2. Nf3 Bg4 3. e3 e6 4. h3 Bxf3 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. Bb2 Bxf3 4. gxf3 e6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. g3 Bxf3 4. exf3 e6 *

[ECO "A06"]

1. b3 d5 2. Nf3 Bg4 3. Bb2 e6 4. h3 Bxf3 *

[ECO "A06"]

1. b4 d5 2. Nf3 Bg4 3. Nc3 e6 4. Ne5 Bh5 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 dxe4 4. dxe4 e5 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. Ne5 Bh5 4. d4 e6 *

[ECO "A06"]

1. b3 d5 2. Nf3 Bg4 3. Bb2 e6 4. Ne5 Bf5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bf5 3. c4 dxc4 4. e3 e6 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. Nf3 e6 4. c4 dxc4 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bf5 3. c4 e6 4. cxd5 exd5 *

[ECO "D00"]

1. d4 d5 2. e3 Bf5 3. Bd3 e6 4. Bxf5 exf5 *

[ECO "A00"]

1. Nh3 e5 2. g3 d5 3. f4 Bxh3 4. Bxh3 exf4 *

[ECO "A00"]

1. b4 d5 2. Bb2 Bg4 3. h3 Bh5 4. g3 e5 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. e3 e5 4. h3 Bxf3 *

[ECO "B01"]

1. e4 d5 2. Nc3 d4 3. Nce2 e5 4. f4 Bg4 *

[ECO "B20"]

1. e4 c5 2. c4 g6 3. Nc3 Bg7 4. g3 Nc6 *

[ECO "A07"]

1. g3 d5 2. Nf3 Bf5 3. c4 dxc4 4. Na3 e5 *

[ECO "C40"]

1. e4 e5 2. Nf3 f5 3. exf5 d6 4. d4 Bxf5 *

[ECO "C25"]

1. e4 e5 2. Nc3 d6 3. Bc4 Be6 4. Bxe6 fxe6 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Bd7 4. Ngf3 dxe4 *

[ECO "C00"]

1. e4 e6 2. Nc3 d5 3. g3 dxe4 4. Nxe4 Bd7 *

[ECO "C00"]

1. e4 e6 2. Nc3 d5 3. g3 dxe4 4. Bg2 Bd7 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 e6 4. Qa4+ Bd7 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 f6 4. Qa4+ Bd7 *

[ECO "D06"]

1. d4 d5 2. c4 Bf5 3. cxd5 Nf6 4. Nf3 Qxd5 *

[ECO "D06"]

1. d4 Nf6 2. c4 d5 3. cxd5 Qxd5 4. Nf3 Bg4 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nc3 d6 4. Bg5 Nd7 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. c4 Nf6 4. Nc3 Qd7 *

[ECO "A04"]

1. Nf3 c5 2. g3 b5 3. e4 Qa5 4. Bg2 Bb7 *

[ECO "A10"]

1. c4 b6 2. e4 e6 3. d4 Bb7 4. Bd3 Qh4 *

[ECO "A13"]

1. c4 e6 2. Nc3 b6 3. d4 Bb7 4. Qc2 Qf6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 Qa5 4. Nf4 Bd7 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. Nc3 Bf5 4. Qb3 Qd7 *

[ECO "D06"]

1. d4 d5 2. c4 Bf5 3. cxd5 c6 4. Qb3 Qb6 *

[ECO "D11"]

1. d4 d5 2. c4 c6 3. Nf3 Bf5 4. Qb3 Qb6 *

[ECO "D00"]

1. d4 d5 2. Bf4 c6 3. e3 Qb6 4. b3 Bf5 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Bf4 Bf5 4. e3 Qb6 *

[ECO "C64"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. O-O Nd4 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Bg5 Qb6 4. Nc3 Bf5 *

[ECO "B12"]

1. d4 c6 2. e4 d5 3. e5 Bf5 4. Nc3 Qa5 *

[ECO "D00"]

1. d4 d5 2. Bg5 Qd6 3. Nc3 c6 4. Nf3 Bf5 *

[ECO "B22"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Bf5 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. Bc4 Be6 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. Nf3 Be6 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nf3 Bg4 4. Nc3 Qe6+ *

[ECO "A07"]

1. Nf3 d5 2. g3 Bf5 3. c4 dxc4 4. Na3 Qd5 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Nf3 Bg4 *

[ECO "D00"]

1. d4 d5 2. a3 Bf5 3. e3 e6 4. Bd3 Qg5 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. Qb3 Nc6 4. Nf3 Nf6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. e3 e6 4. h3 Qf6 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. d4 e5 4. Nf3 Bg4 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Bb5+ Bd7 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. e4 Be6 4. Qc2 Qd7 *

[ECO "D06"]

1. d4 d5 2. c4 Bf5 3. cxd5 Bxb1 4. Qa4+ Qd7 *

[ECO "B12"]

1. e4 c6 2. d4 d6 3. Nf3 Qc7 4. Bf4 Bg4 *

[ECO "B27"]

1. e4 c5 2. Nf3 Qc7 3. c3 d6 4. d4 Bg4 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 Qe7 4. Nf3 b6 *

[ECO "B10"]

1. c4 c6 2. e4 e5 3. Nf3 Qa5 4. Nc3 Bb4 *

[ECO "B00"]

1. e4 g5 2. d4 Bg7 3. Bxg5 c5 4. c3 Qb6 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Bb5 Bd6 *

[ECO "B00"]

1. e4 g5 2. d4 Bg7 3. Bxg5 c5 4. Be3 Qb6 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. Bf4 Qb6 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. h4 c5 4. dxc5 Qa5+ *

[ECO "A04"]

1. Nf3 c5 2. e3 g6 3. d4 Bg7 4. dxc5 Qa5+ *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c3 Qa5 4. Be2 Bg7 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. h3 c5 4. d5 Qa5+ *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Be3 d5 4. exd5 Qxd5 *

[ECO "B06"]

1. e4 g6 2. f4 Bg7 3. Nf3 d5 4. exd5 Qxd5 *

[ECO "C25"]

1. e4 e5 2. Nc3 Bc5 3. Nf3 d6 4. Na4 Qe7 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 Qe7 4. Nf3 d5 *

[ECO "A34"]

1. c4 Nf6 2. Nc3 c5 3. g3 Nc6 4. Bg2 g6 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. e3 Bb4 4. cxd5 Qxd5 *

[ECO "C30"]

1. e4 e5 2. f4 Qf6 3. Nc3 Qxf4 4. Bc4 Bb4 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 Qe7 4. Nc3 f5 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. c4 Bb4+ 4. Bd2 Qe7 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. f4 Bc5 4. Nf3 Qe7 *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. Nf3 Qc7 4. Nc3 Bc5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. e3 Bb4+ 4. Bd2 Qe7 *

[ECO "E11"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 Qe7 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 Qe7 4. e4 Nf6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Be3 e6 *

[ECO "D01"]

1. d4 d5 2. Bg5 Nf6 3. Nc3 c5 4. e3 Nc6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bc5 3. e3 Nf6 4. Nf3 Qe7 *

[ECO "A20"]

1. c4 e5 2. g3 Bc5 3. Nc3 Nf6 4. Nf3 Qe7 *

[ECO "A22"]

1. c4 e5 2. g3 Nf6 3. Nc3 Bb4 4. Nf3 Qe7 *

[ECO "A00"]

1. Nc3 Nf6 2. d4 c5 3. d5 a6 4. a4 Qa5 *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nd2 Qa5 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. Bg5 Qb6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. e4 c5 4. Nc3 Qb6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. g3 c5 4. Bg2 Qb6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Bf4 c5 4. d5 Qb6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. Bxf6 exf6 4. Nc3 Qb6 *

[ECO "B20"]

1. e4 c5 2. Bc4 Nc6 3. Nf3 d6 4. c3 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. d5 Qb6 4. Bxf6 exf6 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 c6 3. Bf4 Qb6 4. b3 e6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c6 3. g3 Qa5 4. Bg2 e5 *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. d4 Nf6 4. Nc3 Qa5 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. Nge2 Nf6 4. d4 Qa5 *

[ECO "A43"]

1. e4 e6 2. d4 c5 3. d5 Nf6 4. Nc3 Qa5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. c3 Ne7 4. Bb5 Qa5 *

[ECO "A80"]

1. d4 f5 2. Bg5 c6 3. c4 Qb6 4. Bc1 Nf6 *

[ECO "A80"]

1. d4 f5 2. Bf4 c6 3. Nf3 Qb6 4. b3 Nf6 *

[ECO "A80"]

1. d4 f5 2. Bg5 c6 3. Nf3 Qb6 4. b3 Nf6 *

[ECO "A80"]

1. d4 f5 2. Bg5 Nf6 3. Nc3 d5 4. f3 Nc6 *

[ECO "A43"]

1. d4 c5 2. d5 f5 3. g3 Nf6 4. Bg2 Qa5+ *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 c5 4. e3 Qb6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c6 3. Bxf6 gxf6 4. c4 Qb6 *

[ECO "A30"]

1. c4 c5 2. Nf3 g6 3. d4 Nf6 4. dxc5 Qa5+ *

[ECO "A49"]

1. d4 Nf6 2. Nf3 g6 3. g3 c5 4. dxc5 Qa5+ *

[ECO "A45"]

1. d4 Nf6 2. g3 c5 3. Nf3 g6 4. Bg2 Qa5+ *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. h4 c5 4. e3 Qb6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c6 3. Nd2 Qb6 4. Nb3 Ne4 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 c6 3. Bg5 Qb6 4. Nc3 Qxb2 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bh4 c6 4. Nd2 Qa5 *

[ECO "A00"]

1. c3 d5 2. h3 Nc6 3. d4 e5 4. Be3 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. dxc5 Qa5+ 4. Nd2 Ne4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bh4 c5 4. f3 Qa5+ *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. d5 Ne4 4. Bc1 Qa5+ *

[ECO "C40"]

1. e4 e5 2. Nf3 Qe7 3. Bc4 Nf6 4. Nc3 c6 *

[ECO "D00"]

1. d4 d5 2. Bg5 Nf6 3. e3 c5 4. c3 Qb6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c5 3. c3 Qb6 4. Qb3 d5 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nc3 c5 4. e3 Qb6 *

[ECO "A00"]

1. Nc3 Nf6 2. Nf3 d5 3. d3 c5 4. Bf4 Qb6 *

[ECO "D00"]

1. Nc3 d5 2. d4 c6 3. Bg5 Nf6 4. f3 Qb6 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Bg5 Nf6 4. Nbd2 Qb6 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. Be2 d5 *

[ECO "A50"]

1. c4 Nf6 2. d4 c6 3. Bf4 Qb6 4. Qd2 d5 *

[ECO "A50"]

1. d4 Nf6 2. c4 c6 3. Nc3 d5 4. e3 Qb6 *

[ECO "D00"]

1. d4 d5 2. Nc3 c6 3. Bf4 Nf6 4. e3 Qb6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. e3 c6 4. Bf4 Qb6 *

[ECO "D00"]

1. d4 d5 2. Bf4 c6 3. e3 Qb6 4. Qc1 Nf6 *

[ECO "D00"]

1. d4 d5 2. Bf4 c6 3. e3 Nf6 4. Nd2 Qb6 *

[ECO "D00"]

1. d4 d5 2. Bf4 c6 3. Nf3 Qb6 4. Qc1 Nf6 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. e5 Nh6 4. Be2 Qb6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c6 3. Bf4 d6 4. h3 Qb6 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. f3 Qb6 *

[ECO "C11"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Nbd7 *

[ECO "A15"]

1. c4 Nf6 2. g3 d5 3. cxd5 Qxd5 4. Nf3 c6 *

[ECO "A40"]

1. d4 c6 2. Bg5 d5 3. Nc3 Nf6 4. e3 Qa5 *

[ECO "A50"]

1. d4 Nf6 2. c4 c6 3. Nc3 Qa5 4. e3 d5 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 c6 4. e4 Qa5 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. g3 Qa5 *

[ECO "A04"]

1. Nf3 d6 2. d4 Nf6 3. b3 c5 4. dxc5 Qa5+ *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. c3 Qa5 4. Bc4 Nf6 *

[ECO "B00"]

1. e4 d6 2. Nc3 Nf6 3. g3 c5 4. d4 Qa5 *

[ECO "A41"]

1. d4 d6 2. e4 Nf6 3. f3 c5 4. c3 Qa5 *

[ECO "A43"]

1. d4 c5 2. d5 Nf6 3. Nc3 Qa5 4. Bd2 d6 *

[ECO "C03"]

1. d4 e6 2. e4 d5 3. Nd2 Nd7 4. Ngf3 Ne7 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. c4 c5 4. cxd5 Qxd5 *

[ECO "A30"]

1. c4 c5 2. b3 Nf6 3. g3 d5 4. cxd5 Qxd5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. dxc5 Qa5+ 4. Nd2 d5 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. Bf4 c5 4. dxc5 Qa5+ *

[ECO "D02"]

1. Nf3 Nf6 2. d4 d5 3. g3 c5 4. dxc5 Qa5+ *

[ECO "D02"]

1. d4 Nf6 2. Bf4 d5 3. Nf3 c5 4. e3 Qa5+ *

[ECO "A06"]

1. b3 d5 2. Nf3 c5 3. e3 Nf6 4. Ba3 Qa5 *

[ECO "A04"]

1. Nf3 g6 2. e4 d5 3. exd5 Qxd5 4. d4 Nf6 *

[ECO "A15"]

1. c4 Nf6 2. g3 g6 3. b3 d5 4. cxd5 Qxd5 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. c4 g6 4. cxd5 Qxd5 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Nf3 e4 *

[ECO "D00"]

1. d4 d5 2. Bg5 h6 3. Bh4 Nf6 4. Nf3 Qd6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. h4 d5 4. Nd2 Qd6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Nf3 Qxd5 4. Be2 Qf5 *

[ECO "B01"]

1. e4 d5 2. d3 dxe4 3. dxe4 Qxd1+ 4. Kxd1 Nf6 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Qf3 Nf6 4. Qxd5 Nxd5 *

[ECO "A54"]

1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 Qe7 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. Bc4 Qe7 4. O-O Nh6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. Nd2 Qd6 4. e3 e5 *

[ECO "A00"]

1. b4 d5 2. Bb2 Qd6 3. Nc3 Nf6 4. a3 e5 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nf3 Nf6 4. Be2 e6 *

[ECO "B20"]

1. e4 c5 2. d3 Nc6 3. f4 d6 4. Nc3 g6 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nf3 Nf6 4. Be2 e5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. Nc3 h6 4. Bxf6 Qxf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. e3 h6 4. Bxf6 Qxf6 *

[ECO "C40"]

1. Nf3 f5 2. e4 e5 3. Nxe5 Nf6 4. exf5 Qe7 *

[ECO "A04"]

1. Nf3 f5 2. d3 Nf6 3. e4 e5 4. Nxe5 Qe7 *

[ECO "C40"]

1. e4 e5 2. Nf3 Qe7 3. Nc3 Nf6 4. d4 exd4 *

[ECO "A50"]

1. c4 Nf6 2. d4 c6 3. Nc3 d6 4. e4 Qc7 *

[ECO "B07"]

1. e4 c6 2. d4 d6 3. Nc3 Nf6 4. Be3 Qc7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c5 3. c3 Qc7 4. Bg5 d6 *

[ECO "B27"]

1. e4 c5 2. Nf3 Qc7 3. c3 d6 4. d4 Nf6 *

[ECO "B23"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 e6 4. g3 d5 *

[ECO "B10"]

1. e4 c6 2. d3 e5 3. Nf3 Nf6 4. Be2 Qc7 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. e3 Nf6 4. Bd3 Qc7 *

[ECO "B21"]

1. e4 c5 2. d4 Qa5+ 3. Bd2 Qc7 4. d5 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 c5 3. d4 cxd4 4. Nxd4 Qc7 *

[ECO "B27"]

1. e4 c5 2. Nf3 Qa5 3. Nc3 e6 4. Bc4 a6 *

[ECO "A00"]

1. b4 c6 2. e3 d5 3. Bb2 Qb6 4. a3 a5 *

[ECO "A00"]

1. b4 d5 2. Bb2 Qd6 3. Nc3 c6 4. a3 a5 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. Nc3 e6 4. a4 Qc7 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 Qh4+ 4. Kf1 b6 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 Qh4+ 4. Kf1 b5 *

[ECO "B52"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 *

[ECO "C00"]

1. e4 e6 2. c3 c5 3. Bd3 Nc6 4. Nf3 d5 *

[ECO "C02"]

1. e4 e6 2. d4 d5 3. e5 b6 4. Nh3 Qd7 *

[ECO "A00"]

1. g3 d5 2. c4 dxc4 3. Qa4+ Qd7 4. Qxc4 b5 *

[ECO "B20"]

1. e4 c5 2. b4 b6 3. bxc5 bxc5 4. f4 Qc7 *

[ECO "B10"]

1. e4 c6 2. Nc3 b5 3. a3 Qa5 4. Nf3 b4 *

[ECO "A43"]

1. d4 c5 2. c3 e6 3. Bf4 Qb6 4. Qc2 cxd4 *

[ECO "B40"]

1. Nf3 c5 2. e4 e6 3. d4 cxd4 4. Be2 Qa5+ *

[ECO "A81"]

1. d4 f5 2. g3 c6 3. Nf3 e6 4. Bf4 Qb6 *

[ECO "A80"]

1. d4 f5 2. Bg5 c6 3. e3 Qb6 4. b3 e6 *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. Nf3 Qa5 4. Be2 f5 *

[ECO "A80"]

1. d4 f5 2. Bg5 c6 3. e3 Qb6 4. b3 h6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. e3 Nc6 4. exd4 Nxd4 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c3 Qa5 4. d4 cxd4 *

[ECO "B27"]

1. Nf3 c5 2. e4 Qb6 3. d4 cxd4 4. Qxd4 Qxd4 *

[ECO "B20"]

1. e4 c5 2. g3 d5 3. exd5 Qxd5 4. Qf3 Qd7 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 f6 4. f4 Qb6 *

[ECO "A80"]

1. d4 f5 2. Bg5 c6 3. c4 Qb6 4. Bc1 d6 *

[ECO "A80"]

1. d4 f5 2. Bg5 c6 3. Nd2 Qb6 4. Nb3 d6 *

[ECO "D00"]

1. d4 d5 2. Bf4 c6 3. e3 Qb6 4. b3 g6 *

[ECO "D02"]

1. d4 d5 2. Nf3 c6 3. Bf4 g6 4. e3 Qb6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. f3 g6 4. c3 Qb6 *

[ECO "B15"]

1. e4 g6 2. d4 c6 3. Nc3 d5 4. Bf4 Qb6 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 g6 4. c3 d6 *

[ECO "B10"]

1. e4 c6 2. d3 g6 3. f4 d5 4. Nd2 Qb6 *

[ECO "B15"]

1. e4 c6 2. Nc3 d5 3. d4 g6 4. e5 Qb6 *

[ECO "D00"]

1. d4 d5 2. Bg5 c6 3. Nf3 Qb6 4. b3 h6 *

[ECO "D00"]

1. d4 d5 2. Bg5 c6 3. e3 Qb6 4. Qc1 h6 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. e5 h5 4. Be2 Qb6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. f3 Qb6 4. Nc3 dxe4 *

[ECO "B13"]

1. d4 d5 2. e4 c6 3. exd5 Qxd5 4. Nc3 Qe6+ *

[ECO "D00"]

1. d4 d5 2. Bg5 c6 3. Nf3 Qb6 4. Nc3 Qxb2 *

[ECO "B10"]

1. c4 c6 2. e4 d5 3. e5 dxc4 4. Bxc4 Qd4 *

[ECO "B01"]

1. e4 d5 2. d3 c6 3. f4 dxe4 4. dxe4 Qxd1+ *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Nc6 *

[ECO "B10"]

1. e4 c6 2. Nf3 d5 3. exd5 Qxd5 4. Nc3 Qd6 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. g3 c6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 Qb6 4. Nd5 Qa5 *

[ECO "B20"]

1. e4 c5 2. b3 d5 3. exd5 Qxd5 4. Nc3 Qe6+ *

[ECO "D02"]

1. Nf3 d5 2. d4 c5 3. c4 dxc4 4. dxc5 Qxd1+ *

[ECO "D00"]

1. d4 d5 2. f3 c5 3. e4 dxe4 4. dxc5 Qxd1+ *

[ECO "D00"]

1. d4 d5 2. Bf4 c5 3. e4 dxe4 4. dxc5 Qxd1+ *

[ECO "B21"]

1. e4 c5 2. f4 d5 3. exd5 Qxd5 4. Nc3 Qf5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. f3 Qb6 4. a4 e6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. f3 Qb6 4. a4 e5 *

[ECO "C62"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 exd4 *

[ECO "B10"]

1. c4 c6 2. e4 Qa5 3. Nc3 e5 4. f4 d6 *

[ECO "A20"]

1. c4 e5 2. g3 c6 3. d4 d6 4. Nc3 Qa5 *

[ECO "B10"]

1. c4 c6 2. e4 e5 3. d4 d6 4. Nc3 Qa5 *

[ECO "A00"]

1. b4 d5 2. Bb2 Qd6 3. Nc3 c6 4. a3 e5 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 Qa5 4. d3 e6 *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. f4 d5 4. exd5 Qxd5 *

[ECO "B22"]

1. e4 c5 2. c3 Qa5 3. g3 e6 4. Na3 d5 *

[ECO "D00"]

1. d4 d5 2. Bf4 e6 3. Nd2 c5 4. dxc5 Qf6 *

[ECO "A04"]

1. Nf3 g6 2. e4 d5 3. exd5 Qxd5 4. Nc3 Qe6+ *

[ECO "D06"]

1. d4 d5 2. c4 g6 3. cxd5 Qxd5 4. Nc3 Qa5 *

[ECO "D02"]

1. Nf3 Nc6 2. d4 d5 3. c4 Bg4 4. cxd5 Bxf3 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nf3 Qe4+ 4. Be2 Qg6 *

[ECO "C30"]

1. e4 e5 2. f4 Qh4+ 3. g3 Qe7 4. fxe5 d6 *

[ECO "C30"]

1. e4 e5 2. f4 Qh4+ 3. g3 Qe7 4. Nc3 d6 *

[ECO "C41"]

1. e4 e5 2. Nf3 d6 3. d4 Qe7 4. Nc3 exd4 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. c4 e5 4. Ne2 Qh4 *

[ECO "C25"]

1. e4 e5 2. Nc3 d6 3. f4 exf4 4. Bc4 Qh4+ *

[ECO "C25"]

1. e4 e5 2. Nc3 d6 3. f4 exf4 4. Qf3 Qh4+ *

[ECO "A00"]

1. b4 d5 2. Bb2 Qd6 3. a3 e5 4. c4 dxc4 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. d4 e5 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. g3 e6 4. Bg2 Qd5 *

[ECO "B00"]

1. e4 Nc6 2. d4 d5 3. e5 Bf5 4. c3 e6 *

[ECO "D21"]

1. d4 d5 2. c4 dxc4 3. Nf3 e6 4. e3 Qd5 *

[ECO "C00"]

1. e4 e6 2. Qe2 d5 3. exd5 Qxd5 4. Nc3 Qf5 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Bc4 e6 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 e6 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 d5 4. Bxd5 Qh4+ *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Be2 d5 4. exd5 Qh4+ *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 Qh4+ 4. Kf1 d5 *

[ECO "C00"]

1. e4 e6 2. Qe2 e5 3. c3 d5 4. exd5 Qxd5 *

[ECO "A20"]

1. c4 e5 2. g3 g6 3. d4 exd4 4. Qxd4 Qf6 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 Qh4+ 4. Kf1 g5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. a3 Nf6 4. Nc3 Bb7 *

[ECO "C40"]

1. e4 e5 2. Nf3 f5 3. d4 fxe4 4. Nfd2 Qh4 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 f5 4. exf5 Qh4+ *

[ECO "C30"]

1. e4 e5 2. f4 Qh4+ 3. g3 Qe7 4. Nc3 exf4 *

[ECO "C00"]

1. e4 e6 2. Qe2 d5 3. exd5 Qxd5 4. Nc3 Qd7 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. Nf3 dxc4 4. Qa4+ Qd7 *

[ECO "B10"]

1. e4 c6 2. d3 d5 3. Nd2 Qc7 4. Qe2 dxe4 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. d4 Qa5+ 4. Bd2 Qc7 *

[ECO "A00"]

1. Na3 c5 2. g4 d6 3. Nf3 c4 4. Bh3 Qc7 *

[ECO "B22"]

1. e4 c5 2. c3 d6 3. d4 Qc7 4. Na3 cxd4 *

[ECO "B22"]

1. e4 c5 2. c3 d6 3. d4 Qc7 4. dxc5 dxc5 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 Bf5 4. e3 c6 *

[ECO "B10"]

1. e4 c6 2. d3 d5 3. Nd2 Qc7 4. g3 e5 *

[ECO "C25"]

1. e4 e5 2. Nc3 c6 3. Nf3 d6 4. d4 Qc7 *

[ECO "B20"]

1. e4 c5 2. b4 cxb4 3. a3 e5 4. Bc4 Qc7 *

[ECO "C27"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 Nxe4 4. Bxf7+ Kxf7 *

[ECO "B02"]

1. e4 Nf6 2. Bc4 Nxe4 3. Bxf7+ Kxf7 4. Qh5+ Kg8 *

[ECO "C15"]

1. d4 e6 2. e4 d5 3. Nc3 Bb4 4. Qg4 Kf8 *

[ECO "A17"]

1. c4 e6 2. Nc3 Nf6 3. e3 Bb4 4. Nge2 O-O *

[ECO "E20"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qd2 O-O *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Nd2 Nf6 4. e3 O-O *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e4 Bc5 4. d3 O-O *

[ECO "A41"]

1. d4 d6 2. Nf3 Bg4 3. e4 Nf6 4. h3 Bh5 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. Qc2 Bc5 4. e3 O-O *

[ECO "A21"]

1. c4 e5 2. Nc3 Bc5 3. g3 Nf6 4. d3 O-O *

[ECO "A22"]

1. c4 Nf6 2. Nc3 e5 3. a3 Bc5 4. e3 O-O *

[ECO "A20"]

1. c4 e5 2. e3 Nf6 3. b3 Bc5 4. a3 O-O *

[ECO "A00"]

1. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nf6 4. e3 O-O *

[ECO "C20"]

1. e4 e5 2. b3 Nf6 3. Nc3 Bb4 4. Bd3 O-O *

[ECO "C26"]

1. Nc3 Nf6 2. e4 e5 3. h3 Bb4 4. Bd3 O-O *

[ECO "A22"]

1. c4 e5 2. g3 Nf6 3. Nc3 Bb4 4. e4 O-O *

[ECO "A22"]

1. c4 Nf6 2. Nc3 e5 3. e4 Bb4 4. d3 O-O *

[ECO "A22"]

1. c4 e5 2. Nc3 Bb4 3. g3 Nf6 4. Nf3 O-O *

[ECO "C53"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 *

[ECO "B04"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bf5 *

[ECO "A20"]

1. c4 e5 2. d3 Nf6 3. Nc3 Bb4 4. Bd2 O-O *

[ECO "A00"]

1. b4 e6 2. Bb2 Nf6 3. b5 Be7 4. Nf3 O-O *

[ECO "A40"]

1. d4 e6 2. c3 Nf6 3. Bg5 Be7 4. Nf3 O-O *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 Be7 4. Nbd2 O-O *

[ECO "A13"]

1. c4 e6 2. g3 Nf6 3. b3 Be7 4. Bb2 O-O *

[ECO "E10"]

1. c4 e6 2. Nf3 Nf6 3. d4 Be7 4. Bf4 O-O *

[ECO "A15"]

1. c4 Nf6 2. Nf3 e6 3. Nc3 Be7 4. d4 O-O *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bf4 Be7 4. e3 O-O *

[ECO "A46"]

1. d4 e6 2. e3 Nf6 3. Nf3 Be7 4. Bd3 O-O *

[ECO "C26"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 Be7 4. d3 O-O *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. g3 b5 4. Bg2 Bb7 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. d3 Be7 4. a3 O-O *

[ECO "C26"]

1. e4 e5 2. g3 Nf6 3. Nc3 Be7 4. Bg2 O-O *

[ECO "A40"]

1. c4 e6 2. d4 Bb4+ 3. Nc3 Ne7 4. Qc2 O-O *

[ECO "A00"]

1. e3 g6 2. d4 Nf6 3. c4 Bh6 4. Nc3 O-O *

[ECO "A00"]

1. b4 g6 2. Bb2 Nf6 3. e4 Bg7 4. Nf3 O-O *

[ECO "A00"]

1. b4 g6 2. Bb2 Nf6 3. e4 Bg7 4. a3 O-O *

[ECO "A00"]

1. b4 g6 2. Bb2 Nf6 3. Nf3 Bg7 4. Nc3 O-O *

[ECO "A00"]

1. b4 g6 2. Bb2 Nf6 3. e3 Bg7 4. Bd3 O-O *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. b4 Bg7 4. Na3 O-O *

[ECO "A00"]

1. b4 g6 2. c4 Nf6 3. Nf3 Bg7 4. e3 O-O *

[ECO "C15"]

1. d4 e6 2. e4 d5 3. Nc3 Bb4 4. exd5 Qxd5 *

[ECO "A15"]

1. c4 Nf6 2. g3 g6 3. b4 Bg7 4. Bb2 O-O *

[ECO "A15"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. e4 O-O *

[ECO "A16"]

1. c4 Nf6 2. Nc3 g6 3. b3 Bg7 4. Bb2 O-O *

[ECO "E61"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. f3 O-O *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. c3 Bg7 4. c4 O-O *

[ECO "A40"]

1. d4 g6 2. Bf4 Bg7 3. e3 Nf6 4. Nc3 O-O *

[ECO "A40"]

1. d4 g6 2. Bf4 Bg7 3. e3 Nf6 4. Be2 O-O *

[ECO "A05"]

1. Nf3 Nf6 2. h3 g6 3. Nc3 Bg7 4. d4 O-O *

[ECO "A01"]

1. b3 g6 2. Bb2 Nf6 3. f4 Bg7 4. Nf3 O-O *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 a5 4. Nf3 c6 *

[ECO "D02"]

1. Nf3 Nf6 2. d4 d5 3. Bf4 c5 4. c3 Qb6 *

[ECO "B12"]

1. e4 c6 2. d4 g6 3. Nd2 Bh6 4. Nb3 a5 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. c4 g6 4. Be2 Bg7 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 a6 4. h4 c5 *

[ECO "B20"]

1. e4 c5 2. Na3 a6 3. Bd3 g6 4. Nf3 Bg7 *

[ECO "A43"]

1. d4 c5 2. d5 a6 3. e4 g6 4. Bd2 Bg7 *

[ECO "A42"]

1. c4 d6 2. d4 g6 3. e4 Bg7 4. Nc3 a6 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nc3 a6 4. h4 d5 *

[ECO "A00"]

1. b4 e6 2. a3 a5 3. b5 d5 4. Nc3 Bd6 *

[ECO "A20"]

1. c4 e5 2. g3 Bc5 3. a3 a5 4. e3 d6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 a5 4. Qb3 d6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Bc5 4. Nf3 c6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 a5 4. Qc2 d6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 a5 4. Nc3 d5 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 a6 4. Nf3 Bb4 *

[ECO "C00"]

1. d4 e6 2. e4 g6 3. Nc3 Bg7 4. Nf3 a6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 a5 4. a3 Bd6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Nc3 f5 4. Qb3 a5 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 a5 4. Nc3 f5 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 a5 4. e3 f5 *

[ECO "A84"]

1. c4 f5 2. d4 e6 3. g3 Bb4+ 4. Bd2 a5 *

[ECO "A13"]

1. c4 e6 2. g3 f5 3. Bg2 Be7 4. d4 a5 *

[ECO "C03"]

1. d4 e6 2. e4 d5 3. Nd2 dxe4 4. Nxe4 Be7 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Qb3 a5 4. a3 Be7 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. Nf3 b6 4. Qb3 a5 *

[ECO "A40"]

1. d4 e6 2. Nf3 b6 3. c4 Bb4+ 4. Bd2 a5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. a3 d5 4. Nc3 Be7 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. g3 b5 4. Bf4 Be7 *

[ECO "B06"]

1. e4 g6 2. c4 Bg7 3. d4 b6 4. Nf3 d6 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 b6 *

[ECO "B06"]

1. e4 g6 2. d4 b6 3. Nc3 Bg7 4. Nf3 d6 *

[ECO "A07"]

1. Nf3 d5 2. g3 b6 3. d4 e6 4. c4 Bb4+ *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e4 e5 4. Nf3 Bb4+ *

[ECO "C00"]

1. Nc3 d5 2. e4 e6 3. Nf3 Bb4 4. e5 b6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. g3 b5 4. Bf4 Bd6 *

[ECO "B06"]

1. e4 g6 2. d4 b6 3. Nf3 Bg7 4. Bc4 e6 *

[ECO "B06"]

1. e4 g6 2. d4 b6 3. Nc3 Bg7 4. Be3 e6 *

[ECO "B06"]

1. e4 g6 2. d4 b6 3. Nf3 e6 4. Bd3 Bg7 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Bf4 g5 4. Bd2 Bg7 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. Nf3 b6 4. e4 Bxc3 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. Qb3 Bxc3 4. dxc3 b6 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. Nf3 b6 4. Qb3 Bxc3 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Nc3 Bb4 4. Qb3 Bxc3+ *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. g3 e6 4. Bg2 Bd6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Nd2 b6 4. a3 Bxd2+ *

[ECO "C00"]

1. e4 e6 2. d4 b6 3. Nc3 Bb4 4. Bd3 Bxc3+ *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Nc3 Bb4 4. Qb3 Ba5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Nc3 Bb4 4. e3 f5 *

[ECO "A40"]

1. d4 b6 2. e4 e6 3. Bd3 Bb4+ 4. c3 Be7 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. a3 Bd6 4. e4 c5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. a3 c5 4. dxc5 Bxc5 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. Nc3 Bb4 4. Qc2 c5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. b3 b6 4. Bd3 Be7 *

[ECO "D30"]

1. Nf3 d5 2. c4 e6 3. d4 Nf6 4. Bg5 Bb4+ *

[ECO "A10"]

1. c4 g6 2. e4 Bg7 3. d4 b6 4. Nf3 c5 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. c3 b6 4. Bd3 c5 *

[ECO "B10"]

1. e4 c6 2. Nf3 g6 3. Bc4 Bg7 4. Nc3 b5 *

[ECO "B10"]

1. e4 c6 2. Nc3 g6 3. d4 Bg7 4. h3 b5 *

[ECO "A00"]

1. g3 b5 2. Bg2 c6 3. Nf3 g6 4. O-O Bg7 *

[ECO "A10"]

1. c4 g6 2. d4 Bg7 3. e4 c5 4. d5 b5 *

[ECO "A43"]

1. d4 c5 2. d5 g6 3. d6 Bg7 4. e4 exd6 *

[ECO "B23"]

1. e4 c5 2. Nc3 g6 3. Bc4 Bg7 4. f4 e6 *

[ECO "A34"]

1. c4 c5 2. Nc3 g6 3. f4 Bg7 4. g3 e6 *

[ECO "A34"]

1. c4 c5 2. Nc3 g6 3. Nf3 Bg7 4. e3 e6 *

[ECO "A46"]

1. d4 Nf6 2. Bg5 e6 3. Nf3 h6 4. Bh4 c5 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. d3 Bg7 4. g3 e6 *

[ECO "A20"]

1. c4 e5 2. g3 g6 3. Bg2 Bg7 4. e4 c5 *

[ECO "A20"]

1. c4 e5 2. b3 g6 3. Bb2 Bg7 4. g3 c5 *

[ECO "A30"]

1. c4 c5 2. g3 g6 3. Nf3 Bg7 4. Bg2 e5 *

[ECO "B20"]

1. e4 c5 2. g3 g6 3. Nc3 Bg7 4. d3 e5 *

[ECO "B20"]

1. e4 c5 2. g3 g6 3. Bg2 e5 4. d3 Bg7 *

[ECO "A04"]

1. Nf3 c5 2. g3 g6 3. Bg2 Bg7 4. O-O e5 *

[ECO "A40"]

1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 e5 *

[ECO "A40"]

1. d4 g6 2. Nf3 Bg7 3. c4 c5 4. d5 e5 *

[ECO "A00"]

1. g3 e5 2. c4 c6 3. d4 exd4 4. Nf3 Bb4+ *

[ECO "A81"]

1. d4 f5 2. g3 c6 3. Bg2 e6 4. Nf3 Nf6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Bd6 4. d4 c6 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. g3 cxd4 4. Nxd4 Bc5 *

[ECO "C00"]

1. e4 e6 2. d4 Be7 3. Bd3 c5 4. dxc5 Bxc5 *

[ECO "A00"]

1. b4 c6 2. e3 e5 3. Bb2 f6 4. Bd3 Bxb4 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nc3 Bb4 4. Qb3 c5 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nc3 Bb4 4. Qc2 c5 *

[ECO "A20"]

1. c4 e5 2. f3 c5 3. h3 Be7 4. e3 f5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Be7 4. Qc2 c6 *

[ECO "A11"]

1. c4 c6 2. d4 f5 3. Qc2 g6 4. Nc3 Bg7 *

[ECO "A84"]

1. d4 f5 2. c4 g6 3. h4 Bg7 4. h5 c5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. f3 Nf6 *

[ECO "A80"]

1. d4 f5 2. Nc3 g6 3. h4 Bg7 4. h5 c5 *

[ECO "A40"]

1. d4 g6 2. c4 f5 3. Nf3 c5 4. e3 Bg7 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. d4 f5 4. Nc3 c5 *

[ECO "A00"]

1. g3 c5 2. Bg2 g6 3. c3 Bh6 4. d4 Bxc1 *

[ECO "A10"]

1. c4 g5 2. d4 Bg7 3. Nc3 c5 4. dxc5 Bxc3+ *

[ECO "B06"]

1. e4 g6 2. Nc3 Bg7 3. h4 h5 4. d4 c6 *

[ECO "A40"]

1. d4 g6 2. e4 c6 3. h4 h5 4. Nf3 Bg7 *

[ECO "A00"]

1. h3 g5 2. d4 h6 3. e4 Bg7 4. Nc3 c5 *

[ECO "B10"]

1. e4 c6 2. c4 g6 3. Nc3 Bg7 4. Nf3 c5 *

[ECO "A34"]

1. c4 c5 2. Nc3 g6 3. e3 Bg7 4. d4 cxd4 *

[ECO "A04"]

1. Nf3 g6 2. g3 Bg7 3. d4 c5 4. e3 cxd4 *

[ECO "B00"]

1. e4 g5 2. d4 Bg7 3. Bxg5 c5 4. Nd2 cxd4 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. e3 c6 4. Nc3 Be7 *

[ECO "D11"]

1. Nf3 d5 2. d4 c6 3. c4 e6 4. Nc3 Be7 *

[ECO "D11"]

1. d4 d5 2. Nf3 c6 3. c4 e6 4. Qc2 Be7 *

[ECO "B10"]

1. e4 c6 2. c4 d6 3. Nc3 e5 4. g3 Be7 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. Bg2 c6 4. d4 Be7 *

[ECO "C25"]

1. e4 e5 2. Nc3 c5 3. Nf3 d6 4. Bc4 Be7 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Bc4 e5 4. O-O Be7 *

[ECO "D23"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Qa4+ c6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. g3 Be7 4. Nf3 c5 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. g3 Be7 4. d3 c5 *

[ECO "D00"]

1. d4 d5 2. e3 e6 3. Nf3 c5 4. Be2 Be7 *

[ECO "D00"]

1. d4 d5 2. a3 e6 3. Nf3 Be7 4. g3 c5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 d5 4. Qe2 Be7 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Nd2 Be7 4. g3 c5 *

[ECO "B40"]

1. Nf3 e6 2. e4 c5 3. g3 Be7 4. Bg2 d5 *

[ECO "C00"]

1. e4 e6 2. Nc3 c5 3. f4 d5 4. d3 Be7 *

[ECO "B21"]

1. e4 c5 2. f4 e6 3. d3 d5 4. Be2 Be7 *

[ECO "C00"]

1. e4 e6 2. Qe2 Be7 3. g3 d5 4. e5 c5 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. d4 Nf6 4. dxc5 Nxe4 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 g6 4. exd5 Bg7 *

[ECO "B10"]

1. e4 c6 2. Nc3 g6 3. Bc4 Bg7 4. d4 d5 *

[ECO "B10"]

1. e4 c6 2. c4 g6 3. Nc3 Bg7 4. g3 d5 *

[ECO "A03"]

1. f4 d5 2. Nf3 g6 3. e3 Bg7 4. c4 c6 *

[ECO "D11"]

1. d4 d5 2. Nf3 c6 3. c4 g6 4. Bf4 Bg7 *

[ECO "D11"]

1. Nf3 d5 2. d4 c6 3. c4 g6 4. Nc3 Bg7 *

[ECO "B12"]

1. e4 c6 2. d4 g6 3. Nc3 Bg7 4. g3 d5 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nc3 c6 4. Nge2 d5 *

[ECO "B10"]

1. e4 c6 2. Nf3 g6 3. d4 Bg7 4. Bd3 d5 *

[ECO "B10"]

1. e4 c6 2. Ne2 g6 3. d4 Bg7 4. Be3 d5 *

[ECO "C20"]

1. e4 e5 2. c3 d5 3. Qa4+ c6 4. Nf3 Nf6 *

[ECO "B12"]

1. e4 c6 2. d4 g6 3. Be3 Bg7 4. Qd2 d5 *

[ECO "A40"]

1. d4 g6 2. e4 c6 3. Be3 Bg7 4. Nf3 d5 *

[ECO "B15"]

1. e4 c6 2. Nc3 d5 3. d4 g6 4. Bf4 Bg7 *

[ECO "B10"]

1. e4 c6 2. Nf3 g6 3. d4 Bg7 4. Bf4 d5 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. c3 c6 4. f4 d5 *

[ECO "B12"]

1. e4 c6 2. d4 g6 3. f4 Bg7 4. Nf3 d5 *

[ECO "B10"]

1. e4 c6 2. d3 g6 3. Nf3 Bg7 4. Be2 d5 *

[ECO "B10"]

1. e4 c6 2. d3 d5 3. Qe2 g6 4. Nf3 Bg7 *

[ECO "B10"]

1. e4 c6 2. d3 d5 3. Nd2 g6 4. f4 Bg7 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. a4 d5 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 g6 4. f4 Bg7 *

[ECO "B10"]

1. e4 c6 2. Nf3 g6 3. d4 d5 4. e5 Bg7 *

[ECO "A04"]

1. Nf3 g6 2. d4 Bg7 3. e4 d6 4. Bb5+ c6 *

[ECO "B10"]

1. e4 c6 2. c4 g6 3. Nc3 Bg7 4. g3 d6 *

[ECO "A40"]

1. d4 g6 2. c4 Bg7 3. g3 d6 4. Nf3 c6 *

[ECO "B10"]

1. e4 c6 2. Nc3 g6 3. d4 Bg7 4. Bf4 d6 *

[ECO "B12"]

1. e4 c6 2. d4 g6 3. f4 Bg7 4. Nf3 d6 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Bg5 c5 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Bg5 c5 *

[ECO "A10"]

1. c4 g6 2. e4 Bg7 3. Nc3 c5 4. d3 d6 *

[ECO "C05"]

1. d4 e6 2. e4 d5 3. Nd2 Nf6 4. Bd3 c5 *

[ECO "B20"]

1. e4 c5 2. c4 g6 3. d3 Bg7 4. f4 d6 *

[ECO "A30"]

1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 d6 *

[ECO "A30"]

1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. e3 d6 *

[ECO "A30"]

1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nh3 d6 *

[ECO "A41"]

1. d4 d6 2. Nf3 g6 3. c4 Bg7 4. g3 c5 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. d4 d6 4. c4 c5 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. d4 c5 4. c3 d6 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. Be3 Bg7 4. Qd2 c5 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. Nc3 g6 4. Nf3 Bg7 *

[ECO "B50"]

1. Nf3 c5 2. e4 d6 3. Be2 g6 4. O-O Bg7 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d5 4. f3 Nf6 *

[ECO "B21"]

1. e4 c5 2. f4 g6 3. Nf3 Bg7 4. d3 d6 *

[ECO "B06"]

1. e4 g6 2. g3 Bg7 3. Bg2 c5 4. f4 d6 *

[ECO "A04"]

1. Nf3 c5 2. g3 g6 3. Bg2 Bg7 4. O-O d6 *

[ECO "A10"]

1. c4 g5 2. e4 d6 3. h3 Bg7 4. d3 c5 *

[ECO "A40"]

1. d4 g6 2. Nf3 Bg7 3. g3 c5 4. c3 d5 *

[ECO "A08"]

1. g3 d5 2. Nf3 c5 3. Bg2 g6 4. d4 Bg7 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. f4 c5 4. c3 d5 *

[ECO "B06"]

1. e4 g6 2. f4 Bg7 3. Nf3 c5 4. c3 d5 *

[ECO "B20"]

1. e4 c5 2. d3 g6 3. f4 Bg7 4. Nf3 d5 *

[ECO "B21"]

1. e4 c5 2. f4 g6 3. Nf3 Bg7 4. g3 d5 *

[ECO "A18"]

1. c4 Nf6 2. Nc3 e6 3. e4 d5 4. e5 d4 *

[ECO "A00"]

1. g3 c5 2. Bg2 g6 3. f4 Bg7 4. d3 d5 *

[ECO "A02"]

1. f4 c5 2. g3 g6 3. Bg2 d5 4. Nf3 Bg7 *

[ECO "A04"]

1. Nf3 c5 2. g3 g6 3. d3 d5 4. Bg2 Bg7 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. f4 d5 4. e5 c5 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. h4 d5 4. e5 c5 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. c3 d5 4. e5 c5 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. h3 d5 4. e5 c5 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 c6 4. Bd3 Bb4 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. c4 Bg7 4. d4 Qa5+ *

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. f4 Nc6 4. Nf3 Be7 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. g3 c6 4. e3 Bb4 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. g3 c6 4. Qc2 Bb4 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Nc3 d5 4. Nf3 c6 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. e5 e6 4. Nc3 Bb4 *

[ECO "B10"]

1. e4 c6 2. c4 e6 3. d4 d5 4. e5 Bb4+ *

[ECO "B10"]

1. e4 c6 2. d3 e5 3. Nf3 d5 4. exd5 Bd6 *

[ECO "A11"]

1. c4 c6 2. g3 d5 3. Qc2 e5 4. d3 Bd6 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. e3 c6 4. b3 Bd6 *

[ECO "A09"]

1. Nf3 d5 2. c4 c6 3. Qc2 e6 4. e3 Bd6 *

[ECO "A13"]

1. Nf3 d5 2. g3 e6 3. c4 Bd6 4. Bg2 c6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 d6 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. Nf3 c6 4. Qb3 Bd6 *

[ECO "D11"]

1. Nf3 d5 2. d4 c6 3. c4 e6 4. Nc3 Bd6 *

[ECO "A07"]

1. Nf3 d5 2. g3 e6 3. Bg2 c6 4. b3 Bd6 *

[ECO "A07"]

1. Nf3 d5 2. g3 e6 3. Bg2 c6 4. O-O Bd6 *

[ECO "C25"]

1. e4 e5 2. Nc3 Bc5 3. Nf3 d6 4. Bb5+ c6 *

[ECO "A21"]

1. c4 e5 2. Nc3 c6 3. e4 Bc5 4. g3 d6 *

[ECO "A40"]

1. d4 e6 2. h4 d5 3. Bf4 c5 4. c3 Bd6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. e3 c5 4. Bd3 Bd6 *

[ECO "A40"]

1. d4 e6 2. Nf3 d5 3. Bf4 Bd6 4. Bg3 c5 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. e4 d6 4. d4 c5 *

[ECO "B22"]

1. e4 c5 2. c3 d6 3. d4 Nf6 4. Bd3 Nc6 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Nc3 c5 4. d5 d6 *

[ECO "D02"]

1. d4 d5 2. Nf3 c5 3. dxc5 e6 4. Bf4 Bxc5 *

[ECO "D00"]

1. d4 d5 2. Bf4 e6 3. Nd2 c5 4. dxc5 Bxc5 *

[ECO "C15"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Qd3 c5 *

[ECO "D31"]

1. c4 e6 2. Nc3 d5 3. d4 Bb4 4. Bf4 c5 *

[ECO "D31"]

1. d4 d5 2. c4 e6 3. Nc3 Bb4 4. e3 c5 *

[ECO "D31"]

1. c4 e6 2. Nc3 d5 3. d4 Bb4 4. Nf3 c5 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. Bg2 f5 4. Nc3 Be7 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. e3 Be7 4. d4 f5 *

[ECO "A81"]

1. d4 f5 2. g3 d6 3. Bg2 e6 4. Nc3 Be7 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. c4 Be7 4. g3 f5 *

[ECO "D02"]

1. Nf3 d5 2. d4 f5 3. Nc3 e6 4. Bg5 Be7 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 h6 4. Ngf3 Be7 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Be7 4. e3 d6 *

[ECO "B00"]

1. e4 d6 2. Nc3 e5 3. f4 Be7 4. Bc4 exf4 *

[ECO "D00"]

1. d4 d5 2. f4 e6 3. Nf3 Bb4+ 4. Bd2 Be7 *

[ECO "C00"]

1. e4 e6 2. Nf3 d5 3. Nc3 Bb4 4. a3 Be7 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e3 e6 4. Bxc4 Be7 *

[ECO "D31"]

1. d4 d5 2. c4 e6 3. Nc3 Be7 4. e4 dxe4 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. g3 e6 4. e3 Be7 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 Be7 4. c3 dxe4 *

[ECO "C40"]

1. e4 e5 2. Nf3 d5 3. exd5 e4 4. Qe2 Be7 *

[ECO "C00"]

1. c4 e6 2. e4 d5 3. cxd5 exd5 4. exd5 Be7 *

[ECO "A13"]

1. c4 e6 2. Nc3 d5 3. cxd5 exd5 4. e3 Be7 *

[ECO "C00"]

1. e4 e6 2. Qe2 Be7 3. g3 d5 4. d3 e5 *

[ECO "A40"]

1. d4 g6 2. c4 f5 3. g3 Bg7 4. Nf3 d6 *

[ECO "A84"]

1. c4 f5 2. d4 g6 3. g3 d6 4. Bg2 Bg7 *

[ECO "A42"]

1. c4 g6 2. e4 Bg7 3. d4 d6 4. Nc3 f5 *

[ECO "A80"]

1. d4 f5 2. h3 d6 3. Bf4 g6 4. e3 Bg7 *

[ECO "A04"]

1. Nf3 f5 2. b3 d6 3. d4 g6 4. g3 Bg7 *

[ECO "A50"]

1. d4 Nf6 2. c4 Nc6 3. Nf3 e6 4. a3 d6 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nc3 Bg7 4. Nf3 d6 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nd2 Bg7 4. e3 d6 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nc3 d5 4. Qd2 Bg7 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nc3 d5 4. e3 Bh6 *

[ECO "A04"]

1. Nf3 g6 2. d4 Bg7 3. Bg5 d6 4. e3 h6 *

[ECO "B06"]

1. e4 g6 2. d4 d6 3. Bg5 h6 4. Be3 Bg7 *

[ECO "A40"]

1. d4 g6 2. e4 d6 3. Bg5 h6 4. Bf4 Bg7 *

[ECO "B00"]

1. e4 g5 2. d4 Bg7 3. Nc3 h6 4. Be3 d6 *

[ECO "D00"]

1. d4 d5 2. Bg5 g6 3. Nc3 Bg7 4. Nf3 h6 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. f4 d5 4. exd5 Bg7 *

[ECO "C44"]

1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. d4 Nxe4 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. d4 d6 4. Nc3 d5 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 g6 4. d3 Bg7 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 g6 4. Na3 Bg7 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 g6 4. Nxc4 Bg7 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 g6 4. e4 Bg7 *

[ECO "A07"]

1. g3 d5 2. Nf3 g6 3. c4 dxc4 4. Na3 Bg7 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e3 g6 4. Nc3 Bg7 *

[ECO "A04"]

1. Nf3 g6 2. d4 Bg7 3. g3 d5 4. c4 dxc4 *

[ECO "A00"]

1. g3 g6 2. e4 d5 3. Nc3 dxe4 4. Nxe4 Bg7 *

[ECO "A10"]

1. c4 g6 2. e4 e5 3. Nc3 Bc5 4. Nf3 d6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. g3 Nc6 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. f3 e5 4. d5 Bh6 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. g3 g6 4. d4 Bb4+ *

[ECO "A00"]

1. b4 e5 2. Bb2 d6 3. c4 g6 4. g3 Bg7 *

[ECO "A20"]

1. c4 e5 2. a3 d6 3. e3 g6 4. b4 Bg7 *

[ECO "A20"]

1. c4 e5 2. g3 g6 3. e4 Bg7 4. Bg2 d6 *

[ECO "A20"]

1. c4 e5 2. b3 g6 3. Bb2 Bg7 4. Nf3 d6 *

[ECO "A20"]

1. c4 e5 2. g3 g6 3. Bg2 Bg7 4. d3 d6 *

[ECO "A41"]

1. d4 d6 2. c4 g6 3. Nc3 Bg7 4. h3 e5 *

[ECO "A41"]

1. d4 d6 2. e4 g6 3. c4 e5 4. Ne2 Bg7 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. Nc3 d6 4. Be3 e5 *

[ECO "C60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 g6 4. c3 a6 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. c3 d6 4. Bd3 e5 *

[ECO "B06"]

1. e4 g6 2. d4 d6 3. c3 Bg7 4. f4 e5 *

[ECO "B06"]

1. e4 g6 2. g3 Bg7 3. Bg2 e5 4. d3 d6 *

[ECO "A00"]

1. g3 e5 2. Bg2 d6 3. e4 g6 4. Nf3 Bg7 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. e3 g6 4. f4 Bg7 *

[ECO "A04"]

1. Nf3 d6 2. b3 e5 3. d3 g6 4. Bb2 Bg7 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. e3 g6 4. d4 Bg7 *

[ECO "C00"]

1. e4 e6 2. d4 g6 3. Nf3 Bg7 4. h4 d5 *

[ECO "C00"]

1. d4 e6 2. e4 g6 3. Nc3 Bg7 4. Nf3 d5 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 g6 4. Bd3 Bg7 *

[ECO "C23"]

1. e4 e5 2. Bc4 d6 3. Nf3 c6 4. d4 Nd7 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 g6 4. Ngf3 Bg7 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. d3 e5 4. Nf3 d5 *

[ECO "D31"]

1. d4 d5 2. c4 e6 3. Nc3 h6 4. Nf3 Bb4 *

[ECO "A00"]

1. h3 d5 2. c3 e5 3. d4 e4 4. Bf4 Bd6 *

[ECO "A00"]

1. Nc3 d5 2. e3 e5 3. Nf3 e4 4. Ne5 Bd6 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. g3 e6 4. Bg2 Bd6 *

[ECO "D21"]

1. d4 d5 2. c4 dxc4 3. Nf3 e6 4. e3 Bd6 *

[ECO "C23"]

1. e4 e5 2. Bc4 Bc5 3. Nf3 d6 4. d4 exd4 *

[ECO "C30"]

1. e4 e5 2. f4 Bc5 3. Nf3 d6 4. c3 exf4 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nf3 Bxc3 4. dxc3 d6 *

[ECO "E15"]

1. c4 Nf6 2. d4 e6 3. Nf3 b6 4. g3 Ba6 *

[ECO "C16"]

1. d4 e6 2. e4 d5 3. Nc3 Bb4 4. e5 Ne7 *

[ECO "C00"]

1. e4 e6 2. d3 c5 3. Nf3 Nc6 4. g3 d6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. g3 Bxc3 4. dxc3 d6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Qc2 d6 4. a3 Bxc3 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. e4 d6 4. a3 Bxc3 *

[ECO "C15"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. exd5 Bxc3+ *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Nc3 d5 4. Bd2 Bxc3 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. e3 Bb4+ 4. Bd2 Bxd2+ *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. g3 Bb4+ 4. Bd2 Bxd2+ *

[ECO "C15"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Qg4 Bxc3+ *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e4 e6 4. Bxc4 Bb4+ *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. g3 e6 4. Nc3 Bb4 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 Nc6 4. Nf3 e5 *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Nd2 d5 4. Qc2 dxc4 *

[ECO "D31"]

1. d4 d5 2. c4 e6 3. Nc3 dxc4 4. e4 Bb4 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. c4 dxc4 4. e4 Bb4+ *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. Na3 e6 4. e3 Bxa3 *

[ECO "C20"]

1. e4 e5 2. Ne2 Bc5 3. c3 d5 4. d4 exd4 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. f4 Bb4+ 4. Nd2 d5 *

[ECO "A00"]

1. b4 e5 2. Bb2 Bxb4 3. f4 d6 4. fxe5 dxe5 *

[ECO "A84"]

1. d4 f5 2. c4 e6 3. Nc3 d5 4. Bf4 Bd6 *

[ECO "D02"]

1. d4 d5 2. Nf3 f5 3. Bf4 e6 4. e3 Bd6 *

[ECO "A40"]

1. d4 e6 2. c3 d5 3. Bf4 Bd6 4. Bg3 f5 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. Bg2 dxc4 4. Qa4+ Nd7 *

[ECO "A80"]

1. d4 f5 2. g4 d5 3. g5 e6 4. h4 Bd6 *

[ECO "A80"]

1. d4 f5 2. g4 d5 3. g5 e6 4. Nc3 Bd6 *

[ECO "A84"]

1. d4 f5 2. c4 e6 3. Nc3 d5 4. Bf4 Bb4 *

[ECO "A20"]

1. c4 e5 2. g3 g6 3. d4 Bb4+ 4. Bd2 Bxd2+ *

[ECO "A20"]

1. c4 e5 2. e3 g6 3. d4 exd4 4. exd4 Bb4+ *

[ECO "A10"]

1. c4 g6 2. e4 e5 3. d4 exd4 4. Nf3 Bb4+ *

[ECO "B00"]

1. e4 g5 2. d4 h6 3. Bc4 e6 4. Nc3 Bb4 *

[ECO "B00"]

1. e4 g5 2. d4 Bg7 3. Nc3 e6 4. Nf3 g4 *

[ECO "A40"]

1. d4 Nc6 2. d5 Nb8 3. Nf3 e6 4. c4 Bc5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Qb3 Ba5 4. Qa3 Bxc3 *

[ECO "D30"]

1. d4 d5 2. c4 e6 3. Nf3 dxc4 4. Qa4+ Nd7 *

[ECO "A00"]

1. Na3 e5 2. d4 exd4 3. Nf3 Bb4+ 4. Bd2 Bxa3 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. f4 Bb4+ 4. Bd2 Bxd2+ *

[ECO "A21"]

1. c4 e5 2. Nc3 g6 3. g3 Bg7 4. e3 f5 *

[ECO "A20"]

1. c4 e5 2. e3 g6 3. Nc3 Bg7 4. Nf3 f5 *

[ECO "A10"]

1. c4 g6 2. Nc3 Bg7 3. g3 e5 4. Bg2 f5 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. d5 Bb4+ 4. c3 Bd6 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. d4 f5 4. Qb3 Bxc3+ *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nc3 Bb4 4. e3 Bxc3+ *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. e3 Bb4+ 4. Bd2 Bxd2+ *

[ECO "A40"]

1. c4 e6 2. d4 Bb4+ 3. Nd2 f5 4. a3 Bxd2+ *

[ECO "B00"]

1. e4 Nc6 2. d4 e5 3. d5 Nce7 4. Nf3 Ng6 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. Bg5 Be7 4. Qd2 Bxg5 *

[ECO "A13"]

1. c4 e6 2. Nf3 f5 3. b3 Be7 4. Bb2 Bf6 *

[ECO "A00"]

1. b4 e5 2. Bb2 f6 3. e4 Bxb4 4. a3 Bc5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. g3 Bxc3 4. bxc3 f5 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. d4 Bb4+ 4. Bd2 Bxd2+ *

[ECO "C35"]

1. e4 e5 2. f4 exf4 3. Nf3 Be7 4. Nc3 g5 *

[ECO "C00"]

1. d4 e6 2. e4 h6 3. Bb5 Bb4+ 4. c3 Be7 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Be7 4. d4 exd4 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Bc5 4. b4 Be7 *

[ECO "A40"]

1. d4 Nc6 2. c4 e5 3. d5 Nb8 4. Nc3 Be7 *

[ECO "A07"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 Nd7 4. O-O Ngf6 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. Nf3 Bc5 4. Bg5 Be7 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. e3 Bg7 4. Nc3 h6 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nd2 Bg7 4. e4 h6 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bh4 g5 4. Bg3 Bg7 *

[ECO "A10"]

1. c4 g6 2. d4 f5 3. Nc3 Bg7 4. e4 fxe4 *

[ECO "B00"]

1. e4 g5 2. d4 h6 3. Bc4 Bg7 4. h4 gxh4 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 Nc6 4. d5 Nb8 *

[ECO "A00"]

1. b4 e6 2. Ba3 Nf6 3. c4 a5 4. b5 Bxa3 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. a3 a5 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. d3 a5 4. Bg5 Bb4 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bg4 4. d3 Nd7 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Qb3 a5 4. d3 Nf6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 a6 3. Bf4 e6 4. Nc3 Bb4 *

[ECO "E10"]

1. c4 e6 2. d4 Nf6 3. Nf3 a6 4. Nc3 Bb4 *

[ECO "C25"]

1. e4 e5 2. Nc3 Bc5 3. g3 Nf6 4. Bg2 a6 *

[ECO "C20"]

1. e4 e5 2. d3 Bc5 3. Nc3 Nf6 4. g3 a6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 a5 4. g3 Ne7 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. b4 Bg7 4. Bb2 a5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. b3 a5 4. Bb2 Bg7 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 a6 3. Bf4 g6 4. c4 Bg7 *

[ECO "A20"]

1. c3 e5 2. c4 b6 3. e3 Nf6 4. b3 Bd6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nc6 3. g3 Bg4 4. Bg2 Qd7 *

[ECO "A00"]

1. b4 e6 2. a3 Nf6 3. Nf3 b6 4. c4 Bd6 *

[ECO "E12"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. Bf4 Bd6 *

[ECO "E14"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Bd6 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. Nc3 e6 4. e4 Bb4 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. Qc2 Nf6 4. e3 b6 *

[ECO "A40"]

1. c4 e6 2. d4 b6 3. Nc3 Bb4 4. Qd3 Nf6 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 b6 3. e4 e5 4. g3 Bc5 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e3 Bb4 4. Nge2 b6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 Be7 4. e3 b6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Be7 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Bd7 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 b6 3. e3 e6 4. Bb2 Be7 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 e6 3. d4 b5 4. Bg5 Be7 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. d3 g6 4. b4 Bg7 *

[ECO "A04"]

1. Nf3 g6 2. c4 Nf6 3. b4 Bg7 4. Bb2 b6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. g3 g6 4. Bg2 Bg7 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 b6 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. Nbd2 b6 *

[ECO "A00"]

1. e3 b6 2. h3 g6 3. Nc3 Nf6 4. Nf3 Bg7 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 b5 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c6 3. g3 e6 4. d4 Bb4+ *

[ECO "D15"]

1. d4 Nf6 2. c4 c6 3. Nf3 d5 4. Nc3 Bf5 *

[ECO "C26"]

1. e3 e5 2. e4 Nf6 3. Nc3 Bc5 4. Bc4 c6 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Qe2 Bc5 *

[ECO "A15"]

1. c4 Nf6 2. g3 c6 3. b3 e5 4. Bb2 Bc5 *

[ECO "A23"]

1. c4 e5 2. g3 c6 3. Nc3 Nf6 4. Bg2 Bc5 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 c6 4. d3 Bc5 *

[ECO "C26"]

1. e4 Nf6 2. Nc3 e5 3. g3 Bb4 4. Bg2 c6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. d3 Bb4 4. Bd2 c6 *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. Nc3 Nf6 4. d4 Bb4 *

[ECO "E10"]

1. Nf3 Nf6 2. d4 e6 3. c4 c5 4. d5 Bd6 *

[ECO "A45"]

1. d4 Nf6 2. f3 c5 3. d5 e6 4. e4 Bd6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 Bb4+ *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 Bf5 4. c4 dxc4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. dxc5 e6 4. Nc3 Bxc5 *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. e3 e6 4. dxc5 Bxc5 *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. dxc5 e6 4. a3 Bxc5 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. c3 Nf6 4. dxc5 Bxc5 *

[ECO "A00"]

1. Nc3 Nf6 2. d4 e6 3. e4 Bb4 4. Bd3 c5 *

[ECO "A17"]

1. c4 Nf6 2. Nf3 e6 3. Nc3 Bb4 4. e3 c5 *

[ECO "E20"]

1. c4 e6 2. d4 Nf6 3. Nc3 Bb4 4. Bf4 c5 *

[ECO "A00"]

1. b4 c6 2. e3 e6 3. Ba3 Nf6 4. Nf3 Be7 *

[ECO "A15"]

1. c4 Nf6 2. g3 e6 3. b3 c6 4. Bg2 Be7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c6 3. e3 e6 4. c4 Be7 *

[ECO "B20"]

1. e4 c5 2. g3 d5 3. exd5 Qxd5 4. Nf3 Bg4 *

[ECO "B10"]

1. e4 c6 2. d3 e5 3. Nf3 Nf6 4. Be2 Be7 *

[ECO "A20"]

1. c4 e5 2. g3 c6 3. Qa4 Nf6 4. Bg2 Be7 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Nc3 Nf6 4. Bb5 Be7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 Be7 4. c4 c5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. c3 Be7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 Be7 4. Nbd2 c5 *

[ECO "A30"]

1. c4 c5 2. g3 Nf6 3. Bg2 e6 4. Nc3 Be7 *

[ECO "A13"]

1. c4 e6 2. g3 c5 3. Nf3 Nf6 4. Bg2 Be7 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nf6 3. g3 e6 4. Bh3 Be7 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. a3 Be7 *

[ECO "E21"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nc3 Qe7 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. b3 c5 4. e3 Be7 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. Nbd2 c5 4. e3 Be7 *

[ECO "A45"]

1. d4 Nf6 2. g3 e6 3. Nf3 c5 4. Bg2 Be7 *

[ECO "A01"]

1. b3 Nf6 2. Bb2 c5 3. e3 e6 4. Nf3 Be7 *

[ECO "B20"]

1. e4 c5 2. Ne2 e5 3. Nec3 Nf6 4. Bc4 Be7 *

[ECO "A30"]

1. c4 c5 2. g3 e5 3. Bg2 Be7 4. d3 Nf6 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. e4 c5 4. f4 Ne7 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. e3 Ne7 4. Nge2 c5 *

[ECO "A02"]

1. f4 Nf6 2. Nf3 g6 3. c4 Bh6 4. d4 c5 *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. e3 g6 4. d5 Bh6 *

[ECO "E20"]

1. c4 e6 2. Nc3 Nf6 3. d4 Bb4 4. f3 O-O *

[ECO "E60"]

1. c4 Nf6 2. d4 g6 3. d5 c6 4. Nc3 Bg7 *

[ECO "A05"]

1. g3 Nf6 2. Nf3 g6 3. b4 c6 4. e4 Bg7 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 g6 3. b4 Bg7 4. Bb2 c6 *

[ECO "E60"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. b4 c6 *

[ECO "B10"]

1. c4 c6 2. e4 g6 3. Nc3 Bg7 4. g3 Nf6 *

[ECO "A11"]

1. c4 c6 2. Nf3 Nf6 3. b3 g6 4. Nc3 Bg7 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c6 3. e3 g6 4. d4 Bg7 *

[ECO "A00"]

1. c3 c6 2. d4 Nf6 3. e3 g6 4. Bd3 Bg7 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. Be3 Nf6 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. Bf4 Nf6 *

[ECO "C26"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Bc5 4. d3 O-O *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c6 3. Qa4 g6 4. g3 Bg7 *

[ECO "A15"]

1. c4 Nf6 2. g3 c6 3. Qa4 g6 4. Bg2 Bg7 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 c5 4. dxc5 Bg7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c5 3. c3 g6 4. dxc5 Bg7 *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. Bg5 Bg7 4. e3 c5 *

[ECO "A15"]

1. c4 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 c5 *

[ECO "A30"]

1. c4 c5 2. b3 Nf6 3. Nc3 g6 4. d3 Bg7 *

[ECO "A34"]

1. c4 c5 2. Nc3 g6 3. e3 Nf6 4. Be2 Bg7 *

[ECO "A30"]

1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. e3 Nf6 *

[ECO "A30"]

1. c4 c5 2. Nf3 g6 3. Nc3 Bg7 4. a3 Nf6 *

[ECO "A02"]

1. f4 Nf6 2. Nf3 g6 3. c4 Bg7 4. d4 c5 *

[ECO "A45"]

1. d4 Nf6 2. h3 g6 3. c4 Bg7 4. Nc3 c5 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. h3 c5 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 c5 *

[ECO "A45"]

1. d4 Nf6 2. e3 g6 3. Bd3 Bg7 4. f4 c5 *

[ECO "A02"]

1. f4 Nf6 2. Nf3 g6 3. e3 Bg7 4. d4 c5 *

[ECO "A00"]

1. e3 Nf6 2. b3 g6 3. Bb2 Bg7 4. d4 c5 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. b3 Bg7 4. Bb2 c5 *

[ECO "A49"]

1. d4 Nf6 2. g3 g6 3. Nf3 Bg7 4. b3 c5 *

[ECO "A00"]

1. g3 c5 2. Nf3 g6 3. c3 Bg7 4. d4 Nf6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Be7 4. g3 d6 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. d4 c5 4. e3 Nf6 *

[ECO "A00"]

1. g3 g6 2. Nf3 Bg7 3. d4 c5 4. e3 Nf6 *

[ECO "B27"]

1. Nf3 c5 2. e4 g6 3. d4 Bg7 4. Be3 Nf6 *

[ECO "A04"]

1. Nf3 c5 2. b3 Nf6 3. Bb2 g6 4. e4 Bg7 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. d3 g6 4. g3 Bg7 *

[ECO "B20"]

1. e4 c5 2. a4 g6 3. Nc3 Bg7 4. Nf3 Nf6 *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. d5 g6 4. Nc3 Bg7 *

[ECO "A43"]

1. d4 c5 2. e3 Nf6 3. Nf3 g6 4. d5 Bg7 *

[ECO "A41"]

1. c4 d6 2. d4 e5 3. d5 Nf6 4. Qc2 Be7 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. e3 Nf6 4. c4 Be7 *

[ECO "C01"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Bd6 *

[ECO "A01"]

1. b3 e5 2. Bb2 d6 3. c4 Be7 4. Nf3 Nf6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. d3 d6 4. Nf3 Be7 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. Nc3 Be7 4. d3 Nf6 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. h3 Be7 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 e5 4. Ne2 Be7 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 d6 4. h3 Be7 *

[ECO "C26"]

1. e4 e5 2. Nc3 Nf6 3. g3 d6 4. Bg2 Be7 *

[ECO "B00"]

1. e4 d6 2. f4 Nf6 3. Nc3 e5 4. Nf3 Be7 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. e3 e5 4. d3 Be7 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. Bb2 e5 4. e3 Be7 *

[ECO "D31"]

1. d4 d5 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. Bb2 e5 4. g3 Be7 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d6 3. Bxf6 exf6 4. c4 Be7 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d6 3. Bxf6 exf6 4. g3 Be7 *

[ECO "A04"]

1. Nf3 d6 2. d4 Nf6 3. c3 e6 4. Bg5 Be7 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. e4 d6 4. Nc3 Be7 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 e6 3. g3 Be7 4. Bg2 d6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Nc3 d6 4. Bf4 Be7 *

[ECO "A41"]

1. d4 d6 2. g3 Nf6 3. Bg2 e6 4. c4 Be7 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Nc3 d6 4. e4 Be7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bf4 d6 4. h3 Be7 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. b3 Be7 4. Bb2 Bf6 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 d6 3. g3 e6 4. Nc3 Be7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. e3 e6 4. Bd3 Be7 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 e6 4. Be3 Be7 *

[ECO "A00"]

1. b4 Nf6 2. Bb2 e6 3. b5 Be7 4. Nc3 d5 *

[ECO "A45"]

1. d4 Nf6 2. c3 e6 3. Bg5 Be7 4. Nf3 d5 *

[ECO "A45"]

1. d4 Nf6 2. c3 e6 3. Bg5 Be7 4. Nd2 d5 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nf3 e6 4. Bg5 Be7 *

[ECO "A00"]

1. b4 d5 2. Bb2 Nf6 3. a3 e6 4. e3 Be7 *

[ECO "A15"]

1. c4 Nf6 2. f4 e6 3. Nf3 d5 4. e3 Be7 *

[ECO "B20"]

1. e4 c5 2. d3 g6 3. g3 Bg7 4. Bg2 Nc6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 d6 3. g3 g6 4. Bg2 Bg7 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. b3 Be7 4. Bb2 Nf6 *

[ECO "A17"]

1. c4 e6 2. Nc3 Nf6 3. b3 d5 4. e3 Be7 *

[ECO "A13"]

1. c4 e6 2. g3 Nf6 3. Bg2 d5 4. Nf3 Be7 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Qc2 Be7 *

[ECO "E00"]

1. c4 Nf6 2. d4 e6 3. g3 d5 4. e3 Be7 *

[ECO "E10"]

1. c4 e6 2. Nf3 Nf6 3. d4 d5 4. h3 Be7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bf4 Be7 4. Nc3 d5 *

[ECO "A40"]

1. d4 e6 2. Nf3 Nf6 3. Bf4 Be7 4. Nbd2 d5 *

[ECO "D00"]

1. Nc3 d5 2. d4 Nf6 3. Nf3 e6 4. e3 Be7 *

[ECO "A53"]

1. c4 Nf6 2. d4 d6 3. g3 g6 4. Nc3 Bg7 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. g3 e6 4. Nc3 Be7 *

[ECO "A05"]

1. Nf3 Nf6 2. Nc3 d5 3. d4 e6 4. Qd3 Be7 *

[ECO "A45"]

1. d4 Nf6 2. g3 d5 3. c3 e6 4. Be3 Be7 *

[ECO "A05"]

1. Nf3 Nf6 2. e3 e6 3. Be2 d5 4. d4 Be7 *

[ECO "C11"]

1. d4 e6 2. e4 d5 3. Nc3 Nf6 4. f3 Be7 *

[ECO "C00"]

1. e4 e6 2. Qe2 Be7 3. Nf3 Nf6 4. Nc3 d5 *

[ECO "C00"]

1. e4 e6 2. Nc3 d5 3. g3 Nf6 4. Bg2 Be7 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. e3 e6 4. Nc3 Be7 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. b3 e6 4. Bg2 Be7 *

[ECO "D06"]

1. d4 d5 2. c4 Nf6 3. Nf3 e5 4. Bg5 Be7 *

[ECO "A17"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 Bb4 4. g4 d6 *

[ECO "A00"]

1. g3 e5 2. Bg2 Nf6 3. d3 d5 4. c3 Be7 *

[ECO "D00"]

1. d4 d5 2. Bf4 e6 3. e3 Bd6 4. Nf3 Ne7 *

[ECO "C15"]

1. d4 e6 2. e4 d5 3. Nc3 Bb4 4. Bd2 Ne7 *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. e4 Ne7 4. d4 d5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d6 3. Bg2 g6 4. Nc3 Bh6 *

[ECO "B06"]

1. e4 g6 2. d4 d6 3. Be3 Bh6 4. Bxh6 Nxh6 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. b4 d5 4. e3 Bh6 *

[ECO "A00"]

1. b4 g6 2. Nf3 d5 3. Nc3 Nf6 4. e3 Bh6 *

[ECO "A02"]

1. f4 Nf6 2. Nf3 g6 3. Nc3 Bh6 4. d4 d5 *

[ECO "D04"]

1. d4 d5 2. Nf3 Nf6 3. e3 g6 4. Nbd2 Bh6 *

[ECO "E21"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 Bxc3+ *

[ECO "A40"]

1. d4 g6 2. Bf4 d5 3. e3 Bh6 4. Bxh6 Nxh6 *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. Bg5 d6 4. Nc3 Bg7 *

[ECO "A45"]

1. d4 Nf6 2. c3 g6 3. Bg5 Bg7 4. e3 d6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. b4 Bg7 4. Bg2 d6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. b4 Bg7 4. Bb2 d6 *

[ECO "A00"]

1. b4 g6 2. c4 Bg7 3. Nc3 Nf6 4. d4 d6 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. Bc4 Bg7 4. Qf3 Nf6 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. f4 Bg7 *

[ECO "A15"]

1. c4 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 d6 *

[ECO "A10"]

1. c4 g6 2. e4 Bg7 3. d4 d6 4. Be3 Nf6 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nf3 Nf6 4. g3 Be7 *

[ECO "A40"]

1. d4 g6 2. c4 Bg7 3. e4 d6 4. Be2 Nf6 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. c4 d6 4. Ne2 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. d4 g6 4. Nc3 Bg7 *

[ECO "A40"]

1. d4 g6 2. g3 Bg7 3. e4 d6 4. c3 Nf6 *

[ECO "B07"]

1. d4 d6 2. e4 Nf6 3. Nc3 g6 4. Bf4 Bg7 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. e4 d6 *

[ECO "A00"]

1. c3 d6 2. Nf3 Nf6 3. d3 g6 4. e4 Bg7 *

[ECO "B00"]

1. e4 d6 2. Nc3 g6 3. f4 Bg7 4. Nf3 Nf6 *

[ECO "B00"]

1. e4 d6 2. f4 g6 3. Nf3 Bg7 4. Be2 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. e3 g6 4. Nc3 Bg7 *

[ECO "A80"]

1. d4 f5 2. Bf4 Nf6 3. e3 e6 4. Nf3 b6 *

[ECO "A42"]

1. c4 g6 2. e4 Bg7 3. d4 d6 4. Nc3 Nh6 *

[ECO "B06"]

1. e4 g6 2. d4 Nh6 3. Nc3 Bg7 4. Nf3 d6 *

[ECO "B06"]

1. e4 g6 2. d4 Nh6 3. Nc3 Bg7 4. h3 d6 *

[ECO "A00"]

1. b4 g6 2. e4 Bg7 3. Nc3 d5 4. exd5 Nf6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. d4 g6 4. c4 Bg7 *

[ECO "B06"]

1. d4 g6 2. e4 Bg7 3. c3 d5 4. exd5 Nf6 *

[ECO "D00"]

1. d4 d5 2. a3 g6 3. c4 Nf6 4. cxd5 Bg7 *

[ECO "A02"]

1. f4 Nf6 2. Nf3 g6 3. c4 d5 4. cxd5 Bg7 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. b3 d5 4. cxd5 Bg7 *

[ECO "D80"]

1. d4 g6 2. c4 Nf6 3. Nc3 d5 4. Bg5 Bg7 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 b6 4. d4 cxd4 *

[ECO "E60"]

1. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. Bg5 d5 *

[ECO "A45"]

1. d4 Nf6 2. c3 g6 3. Bg5 Bg7 4. Nd2 d5 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nc3 g6 4. Bg5 Bg7 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. b4 Bg7 4. Bb2 d5 *

[ECO "A00"]

1. g3 g6 2. f4 Bg7 3. c4 Nf6 4. Bg2 d5 *

[ECO "A00"]

1. g3 Nf6 2. Bg2 d5 3. d3 g6 4. c4 Bg7 *

[ECO "A45"]

1. d4 Nf6 2. h3 g6 3. c4 Bg7 4. Nc3 d5 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. e3 g6 4. c4 Bg7 *

[ECO "D00"]

1. Nc3 d5 2. d4 Nf6 3. Bf4 g6 4. h3 Bg7 *

[ECO "A45"]

1. d4 Nf6 2. c3 g6 3. Bf4 d5 4. h3 Bg7 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 Nf6 4. g3 b5 *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. Bf4 d5 4. Nbd2 Bg7 *

[ECO "A03"]

1. f4 d5 2. Nf3 g6 3. e3 Bg7 4. d4 Nf6 *

[ECO "D00"]

1. d4 d5 2. c3 Nf6 3. h3 g6 4. g4 Bg7 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. h4 g6 4. Nc3 Bg7 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 d5 4. Nb3 Bg7 *

[ECO "A49"]

1. Nf3 Nf6 2. g3 g6 3. d4 Bg7 4. b3 d5 *

[ECO "D00"]

1. d4 d5 2. Nc3 Nf6 3. Nf3 g6 4. e3 Bg7 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. Nc3 g6 4. Qd3 Bg7 *

[ECO "A00"]

1. h3 g6 2. c3 Nf6 3. Nf3 Bg7 4. d4 d5 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 d5 4. c3 Bg7 *

[ECO "A15"]

1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. Qc2 g6 *

[ECO "A00"]

1. h3 d5 2. Nf3 Nf6 3. e3 g6 4. d4 Bg7 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Nbd2 g6 4. g3 Bg7 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. e3 g6 4. Nc3 Bg7 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nf3 g6 4. e3 Bg7 *

[ECO "A04"]

1. Nf3 g6 2. d4 Bg7 3. Nc3 d5 4. e4 Nf6 *

[ECO "A00"]

1. g3 g6 2. Nc3 Nf6 3. d4 Bg7 4. e4 d5 *

[ECO "A01"]

1. b3 Nf6 2. Bb2 g6 3. f4 d5 4. e3 Bg7 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 g6 4. Ba3 Bg7 *

[ECO "A06"]

1. Nf3 d5 2. b3 Nf6 3. e3 g6 4. Bb2 Bg7 *

[ECO "A06"]

1. b3 d5 2. Nf3 Nf6 3. Bb2 g6 4. h3 Bg7 *

[ECO "A01"]

1. b3 g6 2. Bb2 Nf6 3. g3 Bg7 4. Bg2 d5 *

[ECO "A02"]

1. f4 g6 2. Nf3 Bg7 3. e4 d5 4. e5 Nh6 *

[ECO "A20"]

1. c4 e5 2. b3 Nf6 3. e3 d5 4. cxd5 Bd6 *

[ECO "A01"]

1. b3 d5 2. b4 e5 3. a3 Nf6 4. Bb2 Bd6 *

[ECO "A00"]

1. g3 d5 2. Bg2 Nf6 3. b3 e5 4. d3 Bd6 *

[ECO "A00"]

1. g3 e5 2. d3 d5 3. Bg2 Nf6 4. c3 Bd6 *

[ECO "A00"]

1. f3 e5 2. Nh3 d5 3. Nf2 Nf6 4. e3 Bd6 *

[ECO "A00"]

1. b4 Nf6 2. Bb2 e6 3. b5 d5 4. e3 Bd6 *

[ECO "A00"]

1. b4 e6 2. c3 Nf6 3. d4 d5 4. e3 Bd6 *

[ECO "A00"]

1. b4 e6 2. a3 d5 3. Nf3 Nf6 4. d4 Bd6 *

[ECO "C49"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 Bb4 *

[ECO "A00"]

1. b4 e6 2. a3 d5 3. Nc3 Nf6 4. Nf3 Bd6 *

[ECO "A00"]

1. b4 e6 2. a3 d5 3. Bb2 Nf6 4. e3 Bd6 *

[ECO "D35"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bf4 Bd6 *

[ECO "D37"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bd6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Nd2 d5 4. e3 Bd6 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. c4 Nf6 4. Nbd2 Bd6 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bd6 *

[ECO "A40"]

1. d4 e6 2. h4 Nf6 3. Nc3 d5 4. Bf4 Bd6 *

[ECO "A40"]

1. d4 e6 2. h4 Nf6 3. Nf3 d5 4. Bf4 Bd6 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. Bf4 Nf6 4. Nc3 Bd6 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Bf4 e6 4. e3 Bd6 *

[ECO "A40"]

1. d4 e6 2. h4 Nf6 3. Nf3 d5 4. Nc3 Bd6 *

[ECO "A40"]

1. d4 e6 2. Nf3 d5 3. b3 Bd6 4. Nc3 Nf6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Nc3 e6 4. g3 Bd6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. c3 Nf6 4. h3 Bd6 *

[ECO "A40"]

1. d4 e6 2. c3 d5 3. Bf4 Bd6 4. Bg3 Nf6 *

[ECO "A06"]

1. Nf3 d5 2. h3 e6 3. e3 Nf6 4. d4 Bd6 *

[ECO "D05"]

1. d4 e6 2. Nf3 d5 3. e3 Nf6 4. Be2 Bd6 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. b3 Nf6 4. a3 Bd6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 e6 4. e3 Bd6 *

[ECO "A40"]

1. d4 h6 2. Nc3 d5 3. e4 dxe4 4. Nxe4 Nf6 *

[ECO "A06"]

1. Nf3 d5 2. b3 Nf6 3. g3 e6 4. Bg2 Bd6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e4 Bc5 4. Nf3 d6 *

[ECO "A22"]

1. c4 Nf6 2. Nc3 e5 3. e4 Bc5 4. h3 d6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. d3 Bc5 4. Nf3 d6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. a3 Bc5 4. Nf3 d6 *

[ECO "C25"]

1. e4 e5 2. Nc3 Bc5 3. Nf3 d6 4. g3 Nf6 *

[ECO "C26"]

1. e4 e5 2. Nc3 Nf6 3. g3 Bc5 4. Bg2 d6 *

[ECO "A00"]

1. g3 e5 2. Bg2 Nf6 3. d3 Bc5 4. Nf3 d6 *

[ECO "C26"]

1. e4 e5 2. Nc3 Nf6 3. g3 Bb4 4. Bg2 d6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e4 Bb4 4. Qc2 d6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. Bc4 Nb6 *

[ECO "E00"]

1. c4 Nf6 2. d4 e6 3. Bg5 Bb4+ 4. Nd2 d6 *

[ECO "A17"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 Bb4 4. e3 d6 *

[ECO "E00"]

1. c4 e6 2. g3 Nf6 3. d4 d5 4. cxd5 Bb4+ *

[ECO "D50"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Bb4 *

[ECO "D00"]

1. Nc3 d5 2. d4 e6 3. Bf4 Bb4 4. Qd3 Nf6 *

[ECO "A40"]

1. d4 e6 2. h4 Nf6 3. Nc3 Bb4 4. Nf3 d5 *

[ECO "A40"]

1. d4 e6 2. h4 Nf6 3. Nc3 Bb4 4. Bd2 d5 *

[ECO "A45"]

1. d4 Nf6 2. Nc3 d5 3. f3 e6 4. e4 Bb4 *

[ECO "C15"]

1. d4 e6 2. e4 d5 3. Nc3 Bb4 4. Bd3 Nf6 *

[ECO "C00"]

1. e4 e6 2. Nc3 d5 3. g3 Nf6 4. Bg2 Bb4 *

[ECO "B01"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. d4 Nf6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. d3 e6 4. Bg2 Bb4+ *

[ECO "A17"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 Bb4 4. g4 d5 *

[ECO "A17"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 Bb4 4. g3 d5 *

[ECO "D00"]

1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. c4 Bb4+ *

[ECO "E20"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. Bd2 d5 *

[ECO "E20"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qd2 d5 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 Bc5 4. f4 d5 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. d3 d5 4. Nbd2 Bc5 *

[ECO "A00"]

1. g3 d5 2. d3 e5 3. Bg2 Nf6 4. Nd2 Bc5 *

[ECO "A05"]

1. Nf3 Nf6 2. b4 e5 3. Nxe5 Bxb4 4. e3 d5 *

[ECO "C00"]

1. e4 e6 2. d4 h6 3. Nf3 d5 4. Nc3 Nf6 *

[ECO "A06"]

1. b4 d5 2. Nf3 Nf6 3. Bb2 e5 4. Nxe5 Bxb4 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. g3 Bb4 4. d3 d5 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Nc3 g6 4. Nf3 Bb4 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Nc3 g6 4. e4 Bb4 *

[ECO "A00"]

1. b4 g6 2. e4 Nf6 3. Nc3 e5 4. b5 Bb4 *

[ECO "A10"]

1. c4 g6 2. e4 e5 3. g3 Bc5 4. Nc3 Nf6 *

[ECO "A00"]

1. g3 Nf6 2. Bg2 e5 3. d3 g6 4. c4 Bc5 *

[ECO "A15"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 e6 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. Nf3 e6 4. Nc3 Bg7 *

[ECO "A13"]

1. c4 e6 2. g3 g6 3. Nc3 Nf6 4. d4 Bg7 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. Bd3 e5 4. c3 d5 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 e6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. e3 g6 4. Be2 Bg7 *

[ECO "A00"]

1. b4 g6 2. e4 Nf6 3. Nc3 e5 4. a3 Bg7 *

[ECO "A10"]

1. c4 g6 2. e4 e5 3. Nf3 Nf6 4. Nc3 Bg7 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 g6 3. e4 e5 4. g3 Bg7 *

[ECO "A00"]

1. g3 Nf6 2. c4 g6 3. Nc3 Bg7 4. Bg2 e5 *

[ECO "A15"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nh3 e5 *

[ECO "A01"]

1. b3 g6 2. Bb2 Nf6 3. Bxf6 exf6 4. c4 Bg7 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. e4 Bg7 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. Nc3 h6 4. Bh4 Bb4 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. Nf3 f5 4. d3 Nf6 *

[ECO "E10"]

1. Nf3 Nf6 2. d4 e6 3. c4 h6 4. Nc3 Bb4 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 h6 4. g3 Bb4+ *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 h6 4. b3 Bc5 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 h6 4. d3 Bc5 *

[ECO "E11"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 Ne4 *

[ECO "E10"]

1. d4 e6 2. Nf3 Nf6 3. c4 Ne4 4. g3 Bb4+ *

[ECO "E20"]

1. c4 Nf6 2. d4 e6 3. Nc3 Bb4 4. f3 Bxc3+ *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Bg5 Bb4+ 4. Bd2 Bxd2+ *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Nd2 Nf6 4. a3 Bxd2+ *

[ECO "A05"]

1. Nf3 Nf6 2. g3 e6 3. Nc3 Bb4 4. a3 Bxc3 *

[ECO "A00"]

1. b4 e5 2. b5 Nf6 3. Bb2 Bc5 4. Bxe5 Bxf2+ *

[ECO "A18"]

1. c4 e6 2. Nc3 Nf6 3. e4 e5 4. g3 Bc5 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. e4 Nf6 4. a3 Bc5 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. d3 Bc5 4. Nf3 e4 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bc5 3. e3 Nf6 4. d4 exd4 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. Nf3 Bc5 4. Nxd4 Nf6 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. f4 Bc5 4. Nf3 Nf6 *

[ECO "A51"]

1. c4 Nf6 2. d4 e5 3. d5 Bb4+ 4. Bd2 Bxd2+ *

[ECO "A22"]

1. c4 e5 2. Nc3 Bb4 3. g3 Nf6 4. e4 Bxc3 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. e3 Bxc3 4. bxc3 Nf6 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. Bg5 e6 4. Nbd2 d5 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. d3 Bb4 4. a3 Bxc3+ *

[ECO "A20"]

1. c4 e5 2. b3 Nf6 3. Nc3 Bb4 4. a3 Bxc3 *

[ECO "C26"]

1. e4 e5 2. Nc3 Nf6 3. g3 Bb4 4. Bg2 Bxc3 *

[ECO "A00"]

1. g3 Nf6 2. Bg2 e5 3. d4 exd4 4. Nf3 Bb4+ *

[ECO "B02"]

1. e4 Nf6 2. d3 e5 3. f4 exf4 4. Bxf4 Bb4+ *

[ECO "C34"]

1. e4 e5 2. f4 exf4 3. Nf3 Bb4 4. Be2 Nf6 *

[ECO "A00"]

1. e3 e5 2. d4 e4 3. c4 Nf6 4. Nc3 Bb4 *

[ECO "C20"]

1. e4 e5 2. b3 Nf6 3. Nc3 Bc5 4. Nf3 Ng4 *

[ECO "A15"]

1. c4 Nf6 2. b3 e5 3. Nc3 Bb4 4. Nd5 Nxd5 *

[ECO "A20"]

1. c4 e5 2. e3 Nf6 3. Nc3 Bb4 4. Nd5 Nxd5 *

[ECO "E11"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 O-O *

[ECO "B00"]

1. e4 b6 2. d4 e6 3. Nf3 c5 4. b3 cxd4 *

[ECO "A00"]

1. a4 e5 2. e4 Nf6 3. Nc3 Bb4 4. Nd5 Nxd5 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. d5 Bd6 4. c4 Nf6 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. d5 Bd6 4. Nc3 Nf6 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. d5 Bd6 4. g3 Nf6 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. d5 Bb4+ 4. Nc3 Nf6 *

[ECO "A13"]

1. c4 e6 2. Nf3 f5 3. d4 Nf6 4. d5 Bb4+ *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. Bf4 Nf6 4. h3 Bb4+ *

[ECO "A81"]

1. d4 f5 2. g3 Nf6 3. Nh3 e6 4. Bg2 Bb4+ *

[ECO "A13"]

1. c4 e6 2. g3 f5 3. Bg2 Nf6 4. Nc3 Bb4 *

[ECO "A13"]

1. c4 e6 2. Nf3 f5 3. g3 Nf6 4. Bg2 Bb4 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nc3 Nf6 4. f3 Bb4 *

[ECO "A84"]

1. d4 f5 2. c4 e6 3. Nc3 Nf6 4. h3 Bb4 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. e3 Nf6 4. Bd3 Bb4+ *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. e3 Nf6 4. c4 Bb4+ *

[ECO "A40"]

1. d4 e6 2. c4 Bb4+ 3. Nd2 f5 4. Nf3 Nf6 *

[ECO "A84"]

1. c4 f5 2. d4 e6 3. g3 Nf6 4. Nh3 Bb4+ *

[ECO "A00"]

1. c3 f5 2. e3 e6 3. Nf3 Nf6 4. Na3 Bxa3 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. Bg5 e6 4. e3 Bb4+ *

[ECO "A10"]

1. c4 f5 2. g3 Nf6 3. Bg2 e5 4. d3 Bc5 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. Bg2 Nf6 4. d3 Bb4+ *

[ECO "A20"]

1. c4 e5 2. g3 c6 3. d4 exd4 4. Qxd4 d5 *

[ECO "A20"]

1. c4 e5 2. g3 f5 3. Bg2 Nf6 4. d4 Bb4+ *

[ECO "A13"]

1. c4 e6 2. Nf3 f5 3. g3 Nf6 4. b3 Be7 *

[ECO "A01"]

1. b3 f5 2. c4 e6 3. Bb2 Nf6 4. g3 Be7 *

[ECO "A13"]

1. c4 e6 2. Nf3 f5 3. Nc3 Nf6 4. Qc2 Be7 *

[ECO "A04"]

1. Nf3 f5 2. c4 e6 3. Nc3 Nf6 4. g3 Be7 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. Bf4 Nf6 4. c4 Be7 *

[ECO "A80"]

1. d4 f5 2. Bf4 Nf6 3. e3 e6 4. a3 Be7 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. e3 Nf6 4. Be2 Be7 *

[ECO "A00"]

1. a3 f5 2. c3 e6 3. Nf3 Nf6 4. d4 Be7 *

[ECO "A04"]

1. Nf3 f5 2. b3 e6 3. e3 Nf6 4. Bb2 Be7 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. Bc4 Nc6 4. Nc3 Bg7 *

[ECO "A04"]

1. Nf3 f5 2. b3 e6 3. g3 Nf6 4. Bg2 Be7 *

[ECO "A04"]

1. Nf3 f5 2. b3 Nf6 3. Bb2 e6 4. g3 Be7 *

[ECO "A80"]

1. d4 f5 2. Nc3 Nf6 3. Bg5 e6 4. e3 Be7 *

[ECO "A80"]

1. d4 f5 2. c3 Nf6 3. Bg5 e6 4. Nd2 Be7 *

[ECO "A80"]

1. d4 f5 2. Bg5 Nf6 3. e3 e6 4. Bd3 Be7 *

[ECO "A40"]

1. d4 e6 2. g3 f5 3. Nf3 Nf6 4. Bg5 Be7 *

[ECO "C00"]

1. e4 e6 2. d4 g6 3. Nf3 Nf6 4. Bg5 Be7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 h6 4. Bh4 Be7 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 h6 4. Nc3 Be7 *

[ECO "C00"]

1. e4 e6 2. Qe2 Nf6 3. e5 Nd5 4. Nc3 Be7 *

[ECO "D31"]

1. c4 e6 2. Nc3 d5 3. d4 Be7 4. Nf3 Nc6 *

[ECO "C00"]

1. e4 e6 2. Qe2 Nf6 3. e5 Nd5 4. Nf3 Be7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bf4 Be7 4. e3 Nh5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 Bb4+ 4. c3 Be7 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Be7 4. e3 Nf6 *

[ECO "A00"]

1. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nf6 4. a3 Be7 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 Bb4+ 4. c3 Be7 *

[ECO "A00"]

1. h3 e5 2. d4 exd4 3. Qxd4 Nf6 4. Bg5 Be7 *

[ECO "A51"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. a3 Be7 *

[ECO "C43"]

1. e4 e5 2. Nf3 Nf6 3. d4 Be7 4. dxe5 Nxe4 *

[ECO "C30"]

1. e4 e5 2. f4 Nf6 3. fxe5 Nxe4 4. Nf3 Be7 *

[ECO "B00"]

1. e4 Nc6 2. d4 e5 3. dxe5 Nxe5 4. Nf3 Bb4+ *

[ECO "A13"]

1. c4 e6 2. Nc3 Bb4 3. e4 Ne7 4. Nf3 f5 *

[ECO "A40"]

1. c4 e6 2. d4 Bb4+ 3. Nd2 f5 4. g3 Ne7 *

[ECO "A10"]

1. c4 g6 2. Nc3 Bg7 3. g3 e6 4. d4 Ne7 *

[ECO "C00"]

1. e4 e6 2. d4 g6 3. Nf3 Ne7 4. Bf4 Bg7 *

[ECO "A20"]

1. c4 e5 2. e3 g6 3. Nc3 Bg7 4. Nf3 Ne7 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. d3 e5 4. c4 Ne7 *

[ECO "A10"]

1. c4 f5 2. g3 Nf6 3. Bg2 g6 4. b4 Bg7 *

[ECO "A10"]

1. c4 f5 2. Nf3 Nf6 3. g3 g6 4. b3 Bg7 *

[ECO "A10"]

1. c4 f5 2. g3 Nf6 3. Bg2 g6 4. b3 Bg7 *

[ECO "A80"]

1. d4 f5 2. Nf3 g6 3. Nc3 Nf6 4. Bf4 Bg7 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 Nc6 4. e3 a6 *

[ECO "A80"]

1. d4 f5 2. Nf3 g6 3. b3 Bg7 4. Bb2 Nf6 *

[ECO "A80"]

1. d4 f5 2. Nf3 g6 3. b3 Nf6 4. Nc3 Bg7 *

[ECO "A80"]

1. d4 f5 2. Nf3 g6 3. Nc3 Nf6 4. g3 Bg7 *

[ECO "A00"]

1. g3 g6 2. Bg2 Bg7 3. d4 f5 4. Nc3 Nf6 *

[ECO "A04"]

1. Nf3 f5 2. b3 Nf6 3. Bb2 g6 4. e3 Bg7 *

[ECO "A85"]

1. d4 f5 2. c4 Nf6 3. Nc3 g6 4. Bg5 Bg7 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. Nc3 Nf6 4. e3 Bg7 *

[ECO "A80"]

1. d4 f5 2. Bg5 g6 3. e3 Bg7 4. Nf3 Nf6 *

[ECO "A40"]

1. d4 g6 2. Bg5 Bg7 3. c3 f5 4. e3 Nh6 *

[ECO "A80"]

1. d4 f5 2. Nf3 g6 3. b3 Nf6 4. e3 Bh6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. d3 Nbd7 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Ne2 Nf6 4. Ng3 h5 *

[ECO "A48"]

1. Nf3 Nf6 2. d4 g6 3. Bg5 Bg7 4. c3 h6 *

[ECO "E60"]

1. Nf3 Nf6 2. c4 g6 3. d4 Bg7 4. Bf4 h6 *

[ECO "A00"]

1. b4 g6 2. Nf3 Bg7 3. Nc3 Nf6 4. e3 Nd5 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Ne2 Nf6 4. e5 Nd5 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nf3 Nf6 4. e5 Ne4 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. c3 Bg7 4. Bg5 Ne4 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. e4 Nxe4 4. d4 Bg7 *

[ECO "A45"]

1. d4 Nf6 2. g4 Nxg4 3. Nf3 g6 4. e4 Bg7 *

[ECO "A49"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 Ne4 *

[ECO "B20"]

1. e4 c5 2. Bd3 Nc6 3. Nf3 Nf6 4. O-O g6 *

[ECO "A00"]

1. b4 c6 2. Bb2 e6 3. e3 Nf6 4. a3 a5 *

[ECO "A00"]

1. b4 c6 2. e3 e6 3. a3 Nf6 4. Nf3 a5 *

[ECO "A00"]

1. b4 e6 2. c3 Nf6 3. d4 a5 4. b5 c6 *

[ECO "A00"]

1. b4 c6 2. e3 e6 3. a3 a5 4. b5 Nf6 *

[ECO "A00"]

1. b4 c6 2. Bb2 Nf6 3. Nc3 e5 4. a3 a5 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Bb3 a5 *

[ECO "A43"]

1. d4 c5 2. dxc5 e6 3. Nc3 Nf6 4. b4 a5 *

[ECO "A45"]

1. d4 Nf6 2. g3 c5 3. dxc5 e6 4. b4 a5 *

[ECO "A00"]

1. b4 Nf6 2. Bb2 e6 3. b5 a6 4. a4 c6 *

[ECO "A30"]

1. c4 c5 2. g3 Nf6 3. Bg2 e6 4. b3 a6 *

[ECO "D00"]

1. d4 d5 2. Bg5 Nf6 3. e3 Ne4 4. Bf4 Nc6 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 a6 3. Bf4 e6 4. Nbd2 c5 *

[ECO "B20"]

1. e4 c5 2. Bc4 e6 3. Nc3 a6 4. a4 Nf6 *

[ECO "B23"]

1. e4 c5 2. Nc3 a6 3. g3 e5 4. Bg2 Nf6 *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. d5 a6 4. f3 e5 *

[ECO "A13"]

1. c4 e6 2. Nc3 c5 3. e4 a6 4. Nf3 Ne7 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. g3 Ne7 *

[ECO "A50"]

1. d4 Nf6 2. c4 a6 3. Nc3 c5 4. d5 g6 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 a6 4. d4 cxd4 *

[ECO "A00"]

1. b4 c6 2. Bb2 a5 3. b5 Nf6 4. e3 d6 *

[ECO "A15"]

1. c4 Nf6 2. g3 c6 3. Bg2 d5 4. Nf3 a6 *

[ECO "D13"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. cxd5 cxd5 *

[ECO "A01"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Bb5 d6 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. c4 d6 4. Nc3 Nf6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. h3 a6 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. Be2 d6 4. O-O Nf6 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. f4 Nf6 4. Qf3 a6 *

[ECO "B20"]

1. e4 c5 2. Ne2 d6 3. Nbc3 Nf6 4. f4 a6 *

[ECO "B28"]

1. e4 c5 2. Nf3 a6 3. Nc3 d6 4. a4 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. d5 d6 4. Nc3 a6 *

[ECO "A45"]

1. d4 Nf6 2. Nc3 c5 3. d5 d6 4. e4 a6 *

[ECO "A43"]

1. Nf3 Nf6 2. d4 c5 3. d5 d6 4. Nc3 a6 *

[ECO "A06"]

1. b3 d5 2. Nf3 c5 3. e3 a6 4. c4 Nf6 *

[ECO "D04"]

1. d4 d5 2. e3 Nf6 3. Nf3 a6 4. Bd3 c5 *

[ECO "A80"]

1. d4 f5 2. Qd3 d6 3. Nf3 a6 4. Qb3 Nf6 *

[ECO "A80"]

1. d4 f5 2. Qd3 d6 3. Nf3 Nf6 4. Nc3 a6 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. Nbd2 g6 4. Nb3 a5 *

[ECO "A00"]

1. b4 Nf6 2. Bb2 g6 3. Nf3 a5 4. b5 d5 *

[ECO "A06"]

1. b4 d5 2. Nf3 Nf6 3. a3 a5 4. b5 g6 *

[ECO "A00"]

1. b4 d5 2. Bb2 Nf6 3. a3 a5 4. b5 g6 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f3 a6 *

[ECO "B09"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 a6 *

[ECO "A00"]

1. b4 d5 2. Bb2 Nf6 3. a3 a5 4. Nf3 axb4 *

[ECO "A00"]

1. a3 e5 2. c4 Nf6 3. Nc3 h6 4. d3 Nc6 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 Nf6 4. Na3 a5 *

[ECO "B00"]

1. e4 a6 2. d4 d6 3. f4 Nf6 4. Nc3 d5 *

[ECO "A09"]

1. Nf3 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 a6 *

[ECO "A00"]

1. b4 e6 2. a3 Nf6 3. d4 d5 4. Nf3 a5 *

[ECO "A00"]

1. b4 e6 2. a3 d5 3. e3 Nf6 4. Nc3 a5 *

[ECO "A00"]

1. b4 d5 2. Bb2 Nf6 3. e3 e6 4. a3 a5 *

[ECO "A06"]

1. b4 d5 2. Nf3 Nf6 3. e3 e6 4. a3 a5 *

[ECO "A00"]

1. b4 d5 2. Bb2 Nf6 3. a3 e6 4. Nf3 a5 *

[ECO "A13"]

1. c4 e6 2. Nf3 d5 3. e3 Nf6 4. b3 a5 *

[ECO "B51"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. O-O a6 *

[ECO "A00"]

1. b4 e6 2. c3 a5 3. b5 Nf6 4. d4 d5 *

[ECO "A00"]

1. b4 e6 2. a3 a5 3. b5 Nf6 4. Nc3 d5 *

[ECO "A00"]

1. b4 e6 2. a3 d5 3. Nf3 a5 4. b5 Nf6 *

[ECO "A00"]

1. b4 d5 2. Bb2 Nf6 3. a3 a5 4. b5 e6 *

[ECO "C42"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 d6 4. Bc4 a6 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 a6 4. e4 e5 *

[ECO "B07"]

1. d4 d6 2. e4 Nf6 3. Nc3 a6 4. Nf3 e6 *

[ECO "A00"]

1. b4 Nf6 2. Bb2 e6 3. b5 a6 4. a4 d5 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 a6 4. Bg5 d5 *

[ECO "B32"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 a6 *

[ECO "A13"]

1. c4 e6 2. Nc3 d5 3. e3 Nf6 4. Nf3 a6 *

[ECO "A15"]

1. c4 Nf6 2. g3 e6 3. Bg2 a6 4. Nc3 d5 *

[ECO "D05"]

1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Bd3 a6 *

[ECO "D05"]

1. d4 e6 2. Nf3 Nf6 3. e3 d5 4. a3 a6 *

[ECO "C00"]

1. e4 e6 2. d4 a6 3. Bd3 d5 4. Nc3 Nf6 *

[ECO "C00"]

1. e4 e6 2. Bb5 a6 3. Bd3 d5 4. Nf3 Nf6 *

[ECO "A00"]

1. b4 g6 2. Bb2 Nf6 3. e3 e6 4. a3 a5 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 a6 4. Bg5 h6 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 a6 3. Bg5 e6 4. Nc3 h6 *

[ECO "B00"]

1. e4 a6 2. d4 h6 3. Be3 e6 4. Nf3 Nf6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. d4 Nd7 4. Nc3 cxd4 *

[ECO "A00"]

1. a4 a5 2. d4 Nf6 3. Bf4 e6 4. e3 Nd5 *

[ECO "A00"]

1. b4 Nf6 2. Bb2 e6 3. b5 a6 4. e3 axb5 *

[ECO "A00"]

1. b4 e5 2. b5 a6 3. Bb2 e4 4. d3 Nf6 *

[ECO "A00"]

1. b4 e5 2. b5 a6 3. e3 Nf6 4. Nf3 e4 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 a6 3. Bf4 h6 4. c4 g5 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. Bc4 Nb6 4. Bb3 a5 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 Nb6 4. a4 a5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. Na3 a6 4. c4 d5 *

[ECO "A00"]

1. b4 e6 2. Bb2 Nf6 3. a3 b6 4. Nc3 a5 *

[ECO "A00"]

1. b4 e6 2. a3 Nf6 3. Nf3 b6 4. c4 a5 *

[ECO "A21"]

1. c4 e5 2. Nc3 c5 3. g3 Nc6 4. Bg2 g6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bb5 a5 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 e6 3. g3 a6 4. b3 b5 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 e6 3. g3 a6 4. d3 b5 *

[ECO "A04"]

1. Nf3 b5 2. d4 Nf6 3. Bf4 e6 4. e3 a6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 a6 3. g3 b5 4. Bf4 e6 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. g3 b5 4. a3 a6 *

[ECO "A15"]

1. c3 Nf6 2. c4 e5 3. d3 b5 4. cxb5 a6 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. e3 b6 4. Nc3 a6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 b5 3. e3 a6 4. a4 b4 *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nf3 a6 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 b6 4. Ngf3 Ne7 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 b6 3. d3 g6 4. e4 d6 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. e3 d6 4. Bd3 b6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. d3 e6 4. e4 d6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 d6 3. g3 b6 4. c4 e6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. c5 b6 *

[ECO "A00"]

1. b4 e6 2. a3 Nf6 3. Nf3 b6 4. c4 d5 *

[ECO "A17"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 b6 4. e4 d5 *

[ECO "A13"]

1. c4 e6 2. Nf3 Nf6 3. Nc3 d5 4. e3 b6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. d3 e6 4. Nc3 d5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. b3 Nc6 4. Bb2 d6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 e6 3. g3 b6 4. d3 d5 *

[ECO "A17"]

1. Nf3 Nf6 2. c4 b6 3. Nc3 e6 4. a3 d5 *

[ECO "E12"]

1. Nf3 Nf6 2. c4 e6 3. d4 b6 4. Bf4 d5 *

[ECO "D00"]

1. d4 d5 2. e3 Nf6 3. c4 e6 4. Nc3 b6 *

[ECO "A40"]

1. d4 e6 2. c4 b6 3. e3 Nf6 4. Bd3 d5 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. g3 b6 4. Bg2 d5 *

[ECO "A40"]

1. d4 e6 2. Nf3 Nf6 3. Bf4 b6 4. c3 d5 *

[ECO "A47"]

1. Nf3 Nf6 2. d4 b6 3. e3 d5 4. Bd3 e6 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. e3 b6 4. Be2 d5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Nbd2 d5 *

[ECO "A00"]

1. g3 e5 2. Bg2 d5 3. d3 Nc6 4. c3 Be6 *

[ECO "A40"]

1. d4 e6 2. Nf3 b6 3. g3 Nf6 4. Nbd2 d5 *

[ECO "A06"]

1. Nf3 d5 2. b3 e6 3. Bb2 Nf6 4. e3 b6 *

[ECO "A06"]

1. Nf3 d5 2. b3 e6 3. Bb2 Nf6 4. g3 b6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. d3 e6 4. Bg2 b6 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. g3 b5 4. Be3 Nf6 *

[ECO "A40"]

1. d4 e6 2. Nf3 Nf6 3. g3 b5 4. Nbd2 d5 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. g3 b5 4. Bh3 Nf6 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. g3 b5 4. a3 d5 *

[ECO "A04"]

1. Nf3 b5 2. g3 d5 3. Bg2 e6 4. O-O Nf6 *

[ECO "A40"]

1. c4 b6 2. d4 e6 3. a3 g6 4. Nf3 Nf6 *

[ECO "D85"]

1. c4 g6 2. d4 Nf6 3. Nc3 d5 4. cxd5 Nxd5 *

[ECO "A41"]

1. Nf3 g6 2. c4 Bg7 3. d4 d6 4. e4 Bg4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. d5 b6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. e3 b6 4. Nc3 h6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. c3 b6 4. Bg5 h6 *

[ECO "E12"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 h6 *

[ECO "A50"]

1. d4 Nf6 2. c4 h6 3. Nf3 e6 4. e3 b6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 h6 4. Bf4 b6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. c3 b6 4. g3 h6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 e6 3. g3 h6 4. Bg2 b5 *

[ECO "C00"]

1. e4 e6 2. d3 b6 3. Nf3 Ne7 4. d4 Ng6 *

[ECO "C00"]

1. e4 e6 2. d4 b6 3. Bd3 Nf6 4. e5 Nd5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. Bg2 Bb7 4. Na3 a6 *

[ECO "E10"]

1. c4 e6 2. d4 Nf6 3. Nf3 Ne4 4. e3 b6 *

[ECO "E10"]

1. Nf3 Nf6 2. c4 e6 3. d4 Ne4 4. Bd2 b6 *

[ECO "A00"]

1. e3 e5 2. d4 e4 3. Ne2 Nf6 4. c4 b6 *

[ECO "A05"]

1. Nf3 b5 2. g3 Nf6 3. c3 e6 4. a4 b4 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. a4 bxa4 4. Bg2 e6 *

[ECO "A13"]

1. c4 e6 2. Nf3 f5 3. Nc3 Nf6 4. b3 b6 *

[ECO "A13"]

1. c4 e6 2. Nf3 f5 3. g3 b6 4. Nc3 Nf6 *

[ECO "A84"]

1. d4 f5 2. c4 e6 3. Nc3 Nf6 4. h3 b6 *

[ECO "A40"]

1. c4 e6 2. d4 b6 3. e3 f5 4. Be2 Nf6 *

[ECO "A80"]

1. d4 f5 2. Qd3 e6 3. Nf3 Nf6 4. Nc3 b6 *

[ECO "A40"]

1. d4 e6 2. Nf3 b6 3. e4 Nf6 4. Bd3 Bb7 *

[ECO "A40"]

1. d4 e6 2. Nf3 f5 3. e3 Nf6 4. Be2 b6 *

[ECO "C00"]

1. e4 e6 2. d4 b6 3. Bd3 g6 4. Nf3 Ne7 *

[ECO "C00"]

1. e4 e6 2. d3 b6 3. Nf3 Ne7 4. d4 g6 *

[ECO "B06"]

1. e4 g6 2. d4 b6 3. Nf3 Nf6 4. e5 Ne4 *

[ECO "A45"]

1. d4 Nf6 2. c3 b6 3. Bg5 Ne4 4. Bh4 g5 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 b5 3. Bg5 h6 4. Bxf6 gxf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. e3 c5 4. c3 b6 *

[ECO "A34"]

1. c4 c5 2. Nc3 b6 3. e3 Nf6 4. Be2 e6 *

[ECO "A04"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 e6 4. g3 b6 *

[ECO "A04"]

1. Nf3 c5 2. g3 e6 3. Bg2 Nf6 4. c4 b6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Bf5 3. Bf4 Nf6 4. c4 c6 *

[ECO "E00"]

1. d4 e6 2. c4 Nf6 3. Qc2 c5 4. e3 b6 *

[ECO "E00"]

1. d4 e6 2. c4 Nf6 3. Nc3 b6 4. a3 c5 *

[ECO "E12"]

1. Nf3 Nf6 2. d4 e6 3. c4 b6 4. a3 c5 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. e3 b6 4. Nc3 Nf6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 e6 3. e3 c5 4. g3 b6 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 b6 *

[ECO "A43"]

1. d4 c5 2. Nf3 e6 3. c4 Nf6 4. d5 b6 *

[ECO "A40"]

1. c4 b6 2. d4 e6 3. a3 c5 4. d5 Nf6 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Nc3 b5 *

[ECO "C20"]

1. e4 e5 2. Bb5 Nf6 3. Nc3 c6 4. Ba4 b5 *

[ECO "A06"]

1. Nf3 d5 2. b3 Bg4 3. e3 Nf6 4. Bb2 e6 *

[ECO "A45"]

1. d4 Nf6 2. g3 e6 3. Nf3 b5 4. Bg5 c5 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. g3 b5 4. e4 c5 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 b5 4. Be3 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 b5 3. c3 c5 4. Bg2 e6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 b5 4. Bf4 Ne7 *

[ECO "A81"]

1. d4 f5 2. g3 c6 3. Nf3 Nf6 4. Nc3 b5 *

[ECO "A34"]

1. c4 c5 2. Nc3 b6 3. e3 Nf6 4. d4 g6 *

[ECO "A04"]

1. Nf3 c5 2. c3 Nf6 3. d4 b6 4. e3 g6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 b5 3. e3 c6 4. Bd3 h6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c6 3. Bf4 h6 4. Nc3 b5 *

[ECO "A10"]

1. c4 b6 2. b3 Bb7 3. Bb2 e6 4. e3 f5 *

[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. e3 c5 4. c4 cxd4 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c5 3. c3 b6 4. Nbd2 cxd4 *

[ECO "A50"]

1. d4 Nf6 2. c4 c6 3. Nf3 b5 4. e3 bxc4 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c5 3. e3 b6 4. dxc5 bxc5 *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Bg5 b4 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 b6 3. d3 c5 4. e4 d6 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 b6 3. Nf3 c5 4. e3 d6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. g3 Nf6 4. d3 b6 *

[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. f3 c5 4. d5 d6 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c5 3. e3 b6 4. Nc3 d5 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. g3 c5 4. Bg2 Qc7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c5 3. e3 b6 4. Bd3 d5 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c6 3. Qa4 d5 4. cxd5 b5 *

[ECO "A04"]

1. Nf3 b5 2. d4 d5 3. e3 c6 4. Bd3 Nf6 *

[ECO "A57"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nd2 d6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c5 4. O-O b5 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 d5 3. e5 Nfd7 4. d4 c5 *

[ECO "B02"]

1. e4 Nf6 2. d3 d5 3. e5 Nfd7 4. d4 c5 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. d3 d5 4. e5 Nfd7 *

[ECO "B02"]

1. e4 Nf6 2. d3 c5 3. Nf3 d5 4. e5 Nfd7 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c5 3. c3 g6 4. dxc5 e6 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d4 d6 4. dxc5 Qa5+ *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. f3 c5 4. dxc5 e5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. c4 c5 *

[ECO "E10"]

1. d4 Nf6 2. c4 e6 3. Nf3 c6 4. Bg5 h6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c6 3. Nd2 h6 4. Bxf6 exf6 *

[ECO "A50"]

1. d4 Nf6 2. c4 h6 3. Nc3 c5 4. dxc5 e6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. e3 c5 4. c3 h6 *

[ECO "A46"]

1. d4 e6 2. Nf3 Nf6 3. Bg5 c5 4. e4 h6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 e6 3. Nd2 h6 4. Bf4 c5 *

[ECO "A20"]

1. c4 e5 2. a3 Nf6 3. Nc3 h6 4. e4 c5 *

[ECO "A20"]

1. c4 e5 2. a3 Nf6 3. Nc3 h6 4. e3 c5 *

[ECO "B06"]

1. e4 g6 2. f4 d5 3. exd5 Qxd5 4. Nc3 Qa5 *

[ECO "C00"]

1. e4 e6 2. Nc3 c5 3. g3 Ne7 4. Bg2 Nec6 *

[ECO "B10"]

1. e4 c6 2. c4 e6 3. d4 Nf6 4. e5 Ne4 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 e4 4. Ng5 c6 *

[ECO "A20"]

1. c4 e5 2. e3 Nf6 3. a3 c6 4. Nf3 e4 *

[ECO "A20"]

1. c4 e5 2. g3 c6 3. d4 e4 4. Nc3 Nf6 *

[ECO "A00"]

1. c3 e5 2. d4 e4 3. c4 c6 4. Nc3 Nf6 *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. d4 Nf6 4. f3 exd4 *

[ECO "C23"]

1. e4 e5 2. Bc4 c6 3. d4 Nf6 4. dxe5 Nxe4 *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. d4 Nf6 4. dxe5 Nxe4 *

[ECO "B10"]

1. e4 c6 2. d3 e5 3. d4 Nf6 4. dxe5 Nxe4 *

[ECO "A15"]

1. c4 Nf6 2. g3 e6 3. Nc3 Bb4 4. Bg2 O-O *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. dxc5 Ne4 4. Be3 e6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. dxc5 e6 *

[ECO "C00"]

1. e4 e6 2. Nc3 c5 3. Nf3 Nf6 4. e5 Ng4 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. Nge2 Nf6 4. e5 Ng4 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 e6 3. Bf4 c5 4. e3 Nd5 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. f4 Nf6 4. e5 Nd5 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. g3 e6 *

[ECO "A00"]

1. b4 c6 2. e3 e6 3. Bb2 Nf6 4. a3 c5 *

[ECO "A01"]

1. b3 c6 2. Nf3 Nf6 3. d4 e6 4. e3 c5 *

[ECO "A46"]

1. d4 Nf6 2. Bg5 e6 3. e4 c5 4. Nf3 cxd4 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 dxc4 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 g6 3. Nc3 Bg7 4. g3 O-O *

[ECO "A56"]

1. d4 Nf6 2. c4 c5 3. e3 cxd4 4. exd4 e6 *

[ECO "A40"]

1. d4 e6 2. c4 c5 3. e3 Nf6 4. Nc3 cxd4 *

[ECO "A40"]

1. d4 e6 2. h4 Nf6 3. Nf3 c5 4. Nc3 cxd4 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 c5 3. e3 e6 4. b3 cxd4 *

[ECO "A45"]

1. d4 Nf6 2. g3 e6 3. Nf3 c5 4. c3 cxd4 *

[ECO "A40"]

1. d4 e6 2. Nf3 c5 3. e3 Nf6 4. Bd3 cxd4 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. Nc3 Nf6 4. d4 cxd4 *

[ECO "B23"]

1. e4 c5 2. Nc3 e6 3. Nge2 Nf6 4. d4 cxd4 *

[ECO "A00"]

1. e3 e5 2. d4 e4 3. c4 Nf6 4. Nc3 c5 *

[ECO "A00"]

1. g3 e5 2. Bg2 Nf6 3. Nf3 e4 4. Nd4 c5 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Bg5 a6 *

[ECO "C21"]

1. e4 e5 2. d4 exd4 3. Nf3 c5 4. c3 Nf6 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. d3 e5 4. f4 exf4 *

[ECO "E00"]

1. d4 Nf6 2. c4 e6 3. a3 c5 4. d5 exd5 *

[ECO "A45"]

1. d4 Nf6 2. g3 c5 3. d5 e6 4. Nc3 exd5 *

[ECO "A11"]

1. c4 c6 2. d4 f5 3. Nc3 Nf6 4. Bf4 e6 *

[ECO "A11"]

1. c4 c6 2. d4 f5 3. Nf3 Nf6 4. Bf4 e6 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. e3 Nf6 4. Nc3 c6 *

[ECO "A81"]

1. d4 f5 2. g3 c6 3. Bg2 e6 4. Be3 Nf6 *

[ECO "A81"]

1. d4 e6 2. g3 f5 3. Bg2 Nf6 4. Nh3 c6 *

[ECO "A80"]

1. d4 f5 2. Bg5 c5 3. dxc5 Nf6 4. Nd2 e6 *

[ECO "B27"]

1. e3 g6 2. e4 c5 3. Nf3 Bg7 4. d4 cxd4 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. Nc3 Nf6 4. Qc2 c5 *

[ECO "A80"]

1. d4 f5 2. Nf3 Nf6 3. c4 e6 4. h3 c5 *

[ECO "A84"]

1. d4 e6 2. c4 f5 3. a3 Nf6 4. Nc3 c5 *

[ECO "A80"]

1. d4 f5 2. c3 Nf6 3. Nf3 e6 4. h4 c5 *

[ECO "A80"]

1. d4 f5 2. Qd3 e6 3. g3 Nf6 4. Bg2 c5 *

[ECO "A40"]

1. d4 e6 2. g3 f5 3. Bg2 Nf6 4. Nd2 c5 *

[ECO "A60"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. dxe6 fxe6 *

[ECO "A80"]

1. d4 f5 2. b3 Nf6 3. g3 c5 4. d5 e6 *

[ECO "C33"]

1. e4 e5 2. f4 exf4 3. Bc4 Ne7 4. Nf3 c6 *

[ECO "A13"]

1. c4 e6 2. Nc3 c5 3. e4 Ne7 4. d4 cxd4 *

[ECO "D11"]

1. d4 d5 2. Nf3 c6 3. c4 e6 4. Bg5 Be7 *

[ECO "A80"]

1. d4 f5 2. Bg5 h6 3. Bf4 Nf6 4. e3 c6 *

[ECO "A11"]

1. c4 c6 2. d4 f5 3. Nc3 Nf6 4. Bf4 Ne4 *

[ECO "A04"]

1. Nf3 f5 2. d4 Nf6 3. Bg5 Ne4 4. Bh4 c6 *

[ECO "B06"]

1. e4 g6 2. d4 c6 3. c3 Nf6 4. e5 Nd5 *

[ECO "B06"]

1. e4 g6 2. d4 c6 3. Nd2 Nf6 4. e5 Nh5 *

[ECO "A43"]

1. d4 Nf6 2. Nf3 c5 3. d5 g6 4. d6 Ne4 *

[ECO "E60"]

1. c4 Nf6 2. d4 g6 3. Bf4 c5 4. e3 cxd4 *

[ECO "A56"]

1. c4 Nf6 2. d4 c5 3. e3 g6 4. Nc3 cxd4 *

[ECO "B27"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nf6 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 c5 4. c3 cxd4 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 d6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 c5 3. d4 g6 4. c3 cxd4 *

[ECO "A00"]

1. g3 c5 2. Bg2 g6 3. c3 Nf6 4. d4 cxd4 *

[ECO "A48"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Ne4 4. Bf4 c5 *

[ECO "A31"]

1. Nf3 c5 2. c4 Nf6 3. d4 g6 4. d5 Ne4 *

[ECO "B20"]

1. e4 c5 2. b3 g6 3. Bb2 Nf6 4. e5 Nd5 *

[ECO "A50"]

1. c4 Nf6 2. d4 h6 3. Nc3 c5 4. Nf3 cxd4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. h4 h6 4. Bf4 c5 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Bc4 Nb6 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. Bc4 Nb6 4. Bb3 c5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. f3 Nd6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bh4 c5 4. f3 Nf6 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. Nf3 Nxe4 4. Qa4 Nf6 *

[ECO "B20"]

1. e4 c5 2. b3 Nf6 3. e5 Nd5 4. c4 Nb4 *

[ECO "B20"]

1. e4 c5 2. b3 Nf6 3. e5 Nd5 4. c4 Nf4 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 Nxc3 4. bxc3 c5 *

[ECO "B20"]

1. e4 c5 2. a4 Nf6 3. e5 Nd5 4. Nc3 Nb4 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 c6 4. Nxd5 cxd5 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. Nf3 Nxe4 4. d4 cxd4 *

[ECO "B12"]

1. e4 c6 2. d4 e6 3. Nf3 d5 4. Nbd2 Ne7 *

[ECO "B10"]

1. e4 c6 2. c4 e6 3. d4 d5 4. e5 Ne7 *

[ECO "E60"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 d5 *

[ECO "A44"]

1. d4 c5 2. d5 e5 3. e4 d6 4. Bd3 Ne7 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. d3 d6 4. g3 Ne7 *

[ECO "C00"]

1. e4 e6 2. f4 d5 3. e5 Ne7 4. Nc3 c5 *

[ECO "C00"]

1. e4 e6 2. f4 d5 3. e5 c5 4. Nf3 Ne7 *

[ECO "B40"]

1. e4 c5 2. Nf3 e6 3. g3 d5 4. e5 Ne7 *

[ECO "C00"]

1. e4 e6 2. Nf3 d5 3. e5 Ne7 4. a3 c5 *

[ECO "A86"]

1. c4 f5 2. d4 Nf6 3. g3 c6 4. Nf3 d5 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 f5 4. d4 Nf6 *

[ECO "D00"]

1. d4 d5 2. Nc3 f5 3. Bg5 c6 4. e3 Nf6 *

[ECO "A80"]

1. d4 f5 2. Nc3 d5 3. Bg5 c6 4. Qd2 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. e3 Bg7 *

[ECO "B10"]

1. e4 c6 2. a3 d5 3. e5 f6 4. f4 Nh6 *

[ECO "A81"]

1. d4 f5 2. g3 c6 3. Bf4 Nf6 4. Nf3 d6 *

[ECO "A80"]

1. d4 f5 2. Nf3 d6 3. Nc3 Nf6 4. Bg5 c6 *

[ECO "A10"]

1. c4 f5 2. Nf3 Nf6 3. Nc3 d6 4. g3 c5 *

[ECO "B00"]

1. e4 f5 2. Ne2 c5 3. d3 d6 4. g3 Nh6 *

[ECO "D00"]

1. d4 d5 2. Bf4 Nf6 3. e3 g6 4. Bb5+ c6 *

[ECO "A02"]

1. f4 Nf6 2. Nf3 g6 3. e3 d5 4. Bb5+ c6 *

[ECO "B01"]

1. d4 g6 2. e4 d5 3. exd5 Nf6 4. c4 c6 *

[ECO "A15"]

1. c4 Nf6 2. g3 g6 3. Bg2 c6 4. e4 d5 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 g6 3. g3 c6 4. Qb3 d5 *

[ECO "A22"]

1. c4 e5 2. Nc3 Bb4 3. g3 Nf6 4. Nf3 e4 *

[ECO "A16"]

1. c4 Nf6 2. Nc3 g6 3. g3 c6 4. Bh3 d5 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 d5 3. d3 g6 4. c4 c6 *

[ECO "A10"]

1. c4 g6 2. Nf3 Nf6 3. g3 c6 4. Bh3 d5 *

[ECO "A11"]

1. c4 c6 2. g3 d5 3. Bg2 Nf6 4. Qc2 g6 *

[ECO "A07"]

1. Nf3 d5 2. g3 g6 3. c4 c6 4. Na3 Nf6 *

[ECO "A50"]

1. c4 Nf6 2. d4 c6 3. Bf4 d5 4. e3 g6 *

[ECO "D80"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. f3 c6 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. g3 c6 4. Bg2 d5 *

[ECO "D04"]

1. d4 d5 2. Nf3 Nf6 3. e3 c6 4. b3 g6 *

[ECO "A00"]

1. Nc3 Nf6 2. d4 d5 3. Nf3 c6 4. g3 g6 *

[ECO "B22"]

1. e4 c5 2. c3 e6 3. Nf3 Nf6 4. e5 Nd5 *

[ECO "B10"]

1. e4 c6 2. Nf3 g6 3. d4 d5 4. Nc3 Nf6 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 g6 4. h3 Nf6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. f3 g6 4. c3 Nf6 *

[ECO "B10"]

1. e4 c6 2. d3 d5 3. Nd2 g6 4. f4 Nf6 *

[ECO "A00"]

1. g3 d5 2. Bg2 c6 3. f4 Nf6 4. d3 g6 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. b3 g6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 g6 4. c3 Nh6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. e5 g6 4. Nf3 Nh6 *

[ECO "B10"]

1. e4 c6 2. Nc3 d5 3. f4 g6 4. e5 Nh6 *

[ECO "E60"]

1. d4 Nf6 2. c4 g6 3. d5 c6 4. Nc3 d6 *

[ECO "E41"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 *

[ECO "A31"]

1. c4 c5 2. Nf3 Nf6 3. d4 g6 4. g3 cxd4 *

[ECO "B10"]

1. e4 c6 2. Nc3 g6 3. Bc4 Nf6 4. Qf3 d6 *

[ECO "A11"]

1. c4 c6 2. Nf3 Nf6 3. b3 d6 4. Nc3 g6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c6 3. b3 d6 4. d4 g6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 c6 3. Bg2 d6 4. d4 g6 *

[ECO "B12"]

1. e4 c6 2. d4 d6 3. Be2 Nf6 4. Nc3 g6 *

[ECO "B10"]

1. e4 c6 2. c3 d6 3. d4 Nf6 4. Bd3 g6 *

[ECO "B06"]

1. e4 g6 2. d4 c6 3. Bd3 d6 4. Nf3 Nf6 *

[ECO "B07"]

1. d4 d6 2. e4 g6 3. Nc3 Nf6 4. Bf4 c6 *

[ECO "B00"]

1. e4 d6 2. d4 g6 3. Nc3 c6 4. a4 Nf6 *

[ECO "B06"]

1. e4 g6 2. c4 c5 3. Ne2 Nf6 4. Nbc3 d6 *

[ECO "A30"]

1. c4 c5 2. Nf3 d6 3. g3 g6 4. Bg2 Nf6 *

[ECO "E60"]

1. c4 Nf6 2. d4 g6 3. b3 c5 4. e3 d6 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 d6 3. g3 c5 4. Bg2 g6 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. Nd2 g6 4. Bd3 c5 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. g3 g6 4. Bb2 Nf6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. h3 g6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Qc2 g6 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. d3 g6 4. c3 Nf6 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. f4 Nf6 4. Nc3 g6 *

[ECO "B21"]

1. e4 c5 2. f4 d6 3. Nf3 Nf6 4. Nc3 g6 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e4 c5 4. d5 Nf6 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 c5 4. d5 g6 *

[ECO "A43"]

1. d4 c5 2. d5 Nf6 3. Nf3 d6 4. Nc3 g6 *

[ECO "A45"]

1. d4 Nf6 2. g3 c5 3. d5 d6 4. Nc3 g6 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. Bb2 Nf6 4. Bxf6 gxf6 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. c3 c5 4. dxc5 g6 *

[ECO "D80"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. h4 c5 *

[ECO "A00"]

1. h3 Nf6 2. d4 d5 3. c3 g6 4. Bf4 c5 *

[ECO "D02"]

1. Nf3 d5 2. d4 Nf6 3. Bf4 g6 4. h3 c5 *

[ECO "D04"]

1. Nf3 Nf6 2. d4 d5 3. e3 c5 4. b3 g6 *

[ECO "D00"]

1. d3 d5 2. d4 c5 3. e3 Nf6 4. Nf3 g6 *

[ECO "B23"]

1. e4 c5 2. Nc3 d6 3. Nge2 e5 4. Nd5 Nf6 *

[ECO "A03"]

1. f4 d5 2. Nf3 Nf6 3. b3 g6 4. e3 c5 *

[ECO "A06"]

1. Nf3 d5 2. e3 c5 3. b3 Nf6 4. Bb2 g6 *

[ECO "A01"]

1. b3 g6 2. Bb2 Nf6 3. g3 d5 4. Nf3 c5 *

[ECO "A08"]

1. Nf3 c5 2. g3 d5 3. Bg2 Nf6 4. d3 g6 *

[ECO "D02"]

1. d4 Nf6 2. Nf3 d5 3. c3 c6 4. Bg5 h6 *

[ECO "D04"]

1. d4 d5 2. Nf3 Nf6 3. e3 c6 4. Bd3 h6 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 h6 4. Nf3 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. g3 c6 3. Bg2 d5 4. O-O h6 *

[ECO "A01"]

1. b3 d5 2. Bb2 Nf6 3. e3 c6 4. Be2 h5 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. e5 h5 4. Nf3 Nh6 *

[ECO "A10"]

1. c4 f5 2. Nf3 Nf6 3. g3 d6 4. d4 g6 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 c6 4. Bg5 h6 *

[ECO "A41"]

1. d4 d6 2. g3 Nf6 3. Bg2 c6 4. Nc3 h6 *

[ECO "B07"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Be2 h6 *

[ECO "B27"]

1. e4 c5 2. Nf3 h6 3. c3 d6 4. d4 Nf6 *

[ECO "B20"]

1. e4 c5 2. Ne2 d6 3. c3 Nf6 4. Ng3 h5 *

[ECO "D01"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 h6 4. Bf4 c5 *

[ECO "D00"]

1. d4 d5 2. Bg5 h6 3. Bh4 Nf6 4. Nf3 c5 *

[ECO "A53"]

1. d4 Nf6 2. c4 d6 3. Nc3 c6 4. Bg5 d5 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c6 3. Nc3 d6 4. g3 d5 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Bc4 Nf6 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. g3 dxe4 *

[ECO "A12"]

1. Nf3 d5 2. c4 c6 3. b3 dxc4 4. bxc4 Nf6 *

[ECO "A11"]

1. c4 c6 2. Nf3 d5 3. Qb3 dxc4 4. Qxc4 Nf6 *

[ECO "A11"]

1. c4 c6 2. b3 Nf6 3. Bb2 d5 4. g3 dxc4 *

[ECO "A09"]

1. Nf3 d5 2. c4 c6 3. Qb3 Nf6 4. g3 dxc4 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c6 3. Nc3 d5 4. e3 dxc4 *

[ECO "A09"]

1. Nf3 d5 2. c4 c6 3. Qc2 Nf6 4. g3 dxc4 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. e3 Nf6 4. Bd3 dxc4 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. Bf4 dxc4 4. e4 Nf6 *

[ECO "B15"]

1. e4 c6 2. d4 d5 3. f3 dxe4 4. Nc3 Nf6 *

[ECO "A01"]

1. b3 c6 2. e4 d5 3. Bb2 dxe4 4. Ne2 Nf6 *

[ECO "A45"]

1. e4 d6 2. d4 Nf6 3. f3 d5 4. e5 Ng8 *

[ECO "A07"]

1. g3 d5 2. Nf3 Nf6 3. c4 dxc4 4. Qa4+ c6 *

[ECO "B10"]

1. e4 c6 2. Ne2 d5 3. e5 d4 4. d3 Nh6 *

[ECO "B10"]

1. e4 c6 2. Ne2 d5 3. e5 d4 4. Na3 Nh6 *

[ECO "D06"]

1. c4 Nf6 2. d4 d5 3. cxd5 Nxd5 4. Nf3 c6 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. Nf3 Nxd5 4. d4 c6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. e3 c6 4. Bd3 Ne4 *

[ECO "D03"]

1. d4 d5 2. Nf3 Nf6 3. Bg5 c6 4. e3 Ne4 *

[ECO "D02"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 c6 4. c3 Nh5 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nf3 c6 4. Nc3 Ne4 *

[ECO "B02"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 c6 4. d4 d6 *

[ECO "C70"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Be7 *

[ECO "A00"]

1. h3 c6 2. e4 Nf6 3. e5 Nd5 4. Nf3 d6 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 c6 3. b3 d6 4. d4 Ne4 *

[ECO "B02"]

1. e4 Nf6 2. Nc3 d6 3. g3 c6 4. Nf3 c5 *

[ECO "A04"]

1. Nf3 c5 2. b3 d6 3. d4 cxd4 4. Nxd4 Nf6 *

[ECO "B21"]

1. e4 c5 2. d4 cxd4 3. c3 d6 4. cxd4 Nf6 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. Nf3 d6 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. f4 Nf6 4. Bb2 Nxe4 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 c5 3. d5 Ne4 4. Bc1 d6 *

[ECO "B04"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 c5 *

[ECO "B20"]

1. e4 c5 2. b3 Nf6 3. e5 Nd5 4. Bb2 d6 *

[ECO "A21"]

1. c4 e5 2. Nc3 Bb4 3. Qb3 Nc6 4. Nf3 d6 *

[ECO "A04"]

1. Nf3 c5 2. Nc3 Nf6 3. e4 d5 4. e5 d4 *

[ECO "A07"]

1. Nf3 d5 2. g3 Nf6 3. c4 d4 4. b4 c5 *

[ECO "A09"]

1. Nf3 d5 2. c4 d4 3. b4 Nf6 4. a3 c5 *

[ECO "D20"]

1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 c5 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 d5 4. e3 d4 *

[ECO "D23"]

1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. Qc2 c5 *

[ECO "D23"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. g3 c5 *

[ECO "A00"]

1. Nc3 d5 2. Nf3 Nf6 3. d3 c5 4. Bf4 d4 *

[ECO "A00"]

1. a3 d5 2. Nf3 Nf6 3. g3 d4 4. c3 c5 *

[ECO "A00"]

1. Nc3 Nf6 2. Nf3 d5 3. d3 c5 4. e4 d4 *

[ECO "B06"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 Nd7 *

[ECO "D00"]

1. d4 d5 2. Bg5 c5 3. e4 dxe4 4. d5 Nf6 *

[ECO "D00"]

1. d4 d5 2. Bf4 c5 3. e4 dxe4 4. d5 Nf6 *

[ECO "A06"]

1. Nf3 d5 2. b3 c6 3. g3 Nf6 4. d4 c5 *

[ECO "A41"]

1. d4 d6 2. e4 Nf6 3. f3 c5 4. c3 d5 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Nf6 4. O-O c5 *

[ECO "D00"]

1. d4 d5 2. f4 Nf6 3. Nf3 c5 4. c4 cxd4 *

[ECO "D00"]

1. d4 d5 2. e3 Nf6 3. Bd3 c5 4. c3 c4 *

[ECO "A04"]

1. Nf3 c5 2. Nc3 d5 3. d4 cxd4 4. Qxd4 Nf6 *

[ECO "D02"]

1. Nf3 d5 2. d3 Nf6 3. d4 c5 4. c3 cxd4 *

[ECO "A46"]

1. d4 Nf6 2. Nf3 c5 3. c3 d5 4. g3 cxd4 *

[ECO "A90"]

1. d4 f5 2. g3 Nf6 3. Bg2 e6 4. c4 c6 *

[ECO "C46"]

1. e4 e5 2. Nf3 Nf6 3. Bc4 Nc6 4. Nc3 Bb4 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nf3 c5 4. e3 cxd4 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. Bd3 d5 4. e5 c4 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. e5 Nh6 4. Be2 c5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. h4 c5 4. dxc5 d5 *

[ECO "D06"]

1. d4 d5 2. c4 c5 3. cxd5 Nf6 4. e4 Nxe4 *

[ECO "D06"]

1. d4 d5 2. c4 c5 3. cxd5 Nf6 4. Nc3 Nxd5 *

[ECO "D02"]

1. Nf3 d5 2. d4 c5 3. c4 Nf6 4. cxd5 Nxd5 *

[ECO "B01"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. g3 c5 *

[ECO "A30"]

1. c4 c5 2. b3 Nf6 3. e3 d5 4. cxd5 Nxd5 *

[ECO "B20"]

1. e4 c5 2. h3 d5 3. exd5 Nf6 4. Nc3 Nxd5 *

[ECO "A30"]

1. c4 c5 2. Nf3 Nf6 3. e3 d5 4. cxd5 Nxd5 *

[ECO "B20"]

1. e4 c5 2. g3 d5 3. exd5 Nf6 4. Nf3 Nxd5 *

[ECO "B20"]

1. e4 c5 2. g3 d5 3. exd5 Nf6 4. Bg2 Nxd5 *

[ECO "D00"]

1. d4 d5 2. Nc3 Nf6 3. Nf3 c5 4. Bf4 Ne4 *

[ECO "D03"]

1. d4 Nf6 2. Bg5 d5 3. Nf3 Ne4 4. Bf4 c5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d5 4. Nd2 c5 *

[ECO "B20"]

1. e4 c5 2. Ne2 Nf6 3. Nbc3 d5 4. e5 Ng4 *

[ECO "B22"]

1. e4 c5 2. c3 Nf6 3. d3 d5 4. e5 Ng4 *

[ECO "B10"]

1. e4 c6 2. f4 d5 3. e5 Nh6 4. Be2 e6 *

[ECO "A00"]

1. b4 c6 2. e3 Nf6 3. Nf3 d5 4. Bb2 e6 *

[ECO "D00"]

1. d4 d5 2. Bf4 c5 3. e3 Nf6 4. c3 Nc6 *

[ECO "A00"]

1. b4 c6 2. e3 e6 3. a3 Nf6 4. Nc3 d5 *

[ECO "A00"]

1. b4 c6 2. e3 e6 3. Bb2 Nf6 4. a3 d5 *

[ECO "A00"]

1. b4 c6 2. Bb2 Nf6 3. Nf3 e6 4. a3 d5 *

[ECO "A15"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 c6 4. e4 d5 *

[ECO "A13"]

1. c4 e6 2. g3 d5 3. b3 c6 4. Bg2 Nf6 *

[ECO "A06"]

1. Nf3 d5 2. e3 Nf6 3. c4 c6 4. Nc3 e6 *

[ECO "A15"]

1. c4 Nf6 2. g3 c6 3. d3 e6 4. Nf3 d5 *

[ECO "A13"]

1. Nf3 d5 2. c4 e6 3. g3 c6 4. e3 Nf6 *

[ECO "D31"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. Bf4 Nf6 *

[ECO "D02"]

1. Nf3 d5 2. d4 e6 3. c4 Nf6 4. Bf4 c6 *

[ECO "D10"]

1. d4 d5 2. c4 c6 3. e3 Nf6 4. Bd3 e6 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nf3 e6 4. c4 c6 *

[ECO "D31"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. e4 Nf6 *

[ECO "A06"]

1. Nf3 d5 2. b3 c6 3. e3 e6 4. d4 Nf6 *

[ECO "D02"]

1. d4 d5 2. Nf3 e6 3. b3 Nf6 4. Nc3 c6 *

[ECO "A46"]

1. Nf3 Nf6 2. d4 c6 3. e3 e6 4. Be2 d5 *

[ECO "D00"]

1. d4 d5 2. a3 Nf6 3. Nf3 c6 4. e3 e6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. f3 e6 4. Nc3 Nf6 *

[ECO "C10"]

1. e4 e6 2. d4 d5 3. Nc3 c6 4. Bd3 Nf6 *

[ECO "C00"]

1. e4 e6 2. d3 d5 3. Qe2 Nf6 4. Nf3 Nc6 *

[ECO "C03"]

1. e4 e6 2. d4 d5 3. Nd2 c6 4. c3 Nf6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. f3 e6 4. Be3 Nf6 *

[ECO "B12"]

1. e4 c6 2. d4 d5 3. f3 e6 4. Ne2 Nf6 *

[ECO "A01"]

1. b3 Nf6 2. Bb2 d5 3. e3 c6 4. Be2 e6 *

[ECO "A06"]

1. Nf3 d5 2. b3 e6 3. Bb2 Nf6 4. e3 c6 *

[ECO "A07"]

1. Nf3 d5 2. g3 c6 3. Bg2 Nf6 4. d3 e6 *

[ECO "A00"]

1. g3 d5 2. Bg2 c6 3. Nf3 Nf6 4. h3 e6 *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. Nf3 d5 4. cxd5 Nf6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 d5 4. cxd5 c6 *

[ECO "B01"]

1. e4 c6 2. c4 d5 3. exd5 Nf6 4. Qa4 e5 *

[ECO "B10"]

1. e4 c6 2. d3 e5 3. Nf3 d5 4. Nxe5 Nf6 *

[ECO "A00"]

1. b4 c6 2. Bb2 d5 3. Nf3 Nf6 4. e3 e5 *

[ECO "C24"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Nc3 d5 *

[ECO "A20"]

1. c4 e5 2. g3 Nf6 3. Bg2 c6 4. e3 d5 *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. d4 Nf6 4. Bd3 d5 *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. d4 Nf6 4. Nf3 d5 *

[ECO "B10"]

1. e4 c6 2. d3 d5 3. Nd2 e5 4. Be2 Nf6 *

[ECO "A00"]

1. g3 d5 2. Bg2 Nf6 3. d3 c6 4. Nc3 e5 *

[ECO "A45"]

1. d4 Nf6 2. Bg5 d5 3. Bxf6 exf6 4. e3 c6 *

[ECO "B10"]

1. e4 c6 2. d3 d5 3. Nd2 e5 4. Be2 Nh6 *

[ECO "B30"]

1. e4 c5 2. Nf3 Nc6 3. c3 e6 4. d4 d5 *

[ECO "B10"]

1. e4 c6 2. c4 e5 3. Nf3 Nf6 4. Nxe5 d6 *

[ECO "B10"]

1. e4 c6 2. b3 e5 3. Nf3 Nf6 4. Nxe5 d6 *

[ECO "A00"]

1. b4 c6 2. e3 e5 3. Bb2 Nf6 4. a3 d6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c6 3. b3 d6 4. e3 e5 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. e3 c6 4. Nf3 d6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. e3 c6 4. d4 Nf6 *

[ECO "B10"]

1. c4 c6 2. e4 e5 3. Nf3 d6 4. d4 Nf6 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 c6 4. c4 e5 *

[ECO "B10"]

1. e4 c6 2. c4 d6 3. d4 e5 4. f4 Nf6 *

[ECO "B10"]

1. e4 c6 2. Nf3 d6 3. d4 Nf6 4. Bd3 e5 *

[ECO "A08"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. O-O e5 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 c6 4. Be3 e5 *

[ECO "B10"]

1. e4 c6 2. d3 e5 3. Nf3 d6 4. d4 Nf6 *

[ECO "B10"]

1. e4 c6 2. d3 e5 3. f4 d6 4. Nf3 Nf6 *

[ECO "B10"]

1. e4 c6 2. d3 e5 3. f4 d6 4. Be2 Nf6 *

[ECO "A05"]

1. Nf3 Nf6 2. b3 d6 3. Bb2 e5 4. e3 c6 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 e6 4. Bb5+ c6 *

[ECO "B10"]

1. e4 c6 2. Nf3 d6 3. Nc3 Nf6 4. d4 e6 *

[ECO "B20"]

1. e4 c5 2. g3 d6 3. Nc3 e5 4. Bc4 Nf6 *

[ECO "B20"]

1. e4 c5 2. Ne2 e5 3. Nec3 Nf6 4. Bc4 d6 *

[ECO "A21"]

1. c4 e5 2. Nc3 d6 3. e4 c5 4. Be2 Nf6 *

[ECO "A41"]

1. Nf3 d6 2. d4 Bg4 3. c4 g6 4. Qb3 Nc6 *

[ECO "A21"]

1. c4 e5 2. Nc3 c5 3. d3 Nf6 4. e4 d6 *

[ECO "A21"]

1. c4 e5 2. Nc3 c5 3. e3 d6 4. Be2 Nf6 *

[ECO "A22"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 d6 4. g3 c5 *

[ECO "A30"]

1. c4 c5 2. g3 e5 3. Bg2 d6 4. Nc3 Nf6 *

[ECO "A20"]

1. c4 e5 2. g3 d6 3. Bg2 c5 4. d3 Nf6 *

[ECO "A15"]

1. c4 Nf6 2. Nf3 c5 3. g3 d6 4. Bg2 e5 *

[ECO "B22"]

1. e4 c5 2. c3 d6 3. d4 Nf6 4. Bd3 e5 *

[ECO "A40"]

1. d4 e6 2. Nf3 b6 3. e4 Bb7 4. Nc3 Bb4 *

[ECO "B00"]

1. e4 d6 2. d4 Nf6 3. f3 e5 4. Ne2 c5 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. b3 Nf6 4. Nc3 e5 *

[ECO "B20"]

1. e4 c5 2. b3 d6 3. Bb2 Nf6 4. Nc3 e5 *

[ECO "C26"]

1. e4 e5 2. Nc3 Nf6 3. g3 d6 4. Bg2 c5 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. g3 e5 *

[ECO "B20"]

1. e4 c5 2. Ne2 d6 3. c3 Nf6 4. f3 e5 *

[ECO "B50"]

1. e4 c5 2. Nf3 d6 3. g3 Nf6 4. d3 e5 *

[ECO "B20"]

1. e4 c5 2. Qe2 e5 3. Nf3 d6 4. Qe3 Nf6 *

[ECO "B20"]

1. e4 c5 2. b3 e5 3. Bb2 d6 4. f4 Nf6 *

