Whats new in V2.1 (compared to V2.0 (see below)):

All Drawkiller lines are shorter now (4 moves, 8 plies), because I did not
use castle-moves in the old Drawkiller-lines (that was stupid!). With
castle-moves, the lines get shorter...
The Drawkiller books (for Fritz, Shredder, Arena) are 4 moves (8 plies)
shallower, too.
IMPORTANT: All endpositions in all files are unchanged. Only the movelists in
the pgn-files to reach that endpositions are shorter now! The EPD-files were
not changed, of course, because they contain the endpositions, only.

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Whats new in V2.0 (compared to V1.5 (see below)):

The Drawkiller_balanced folder, which contains 2 Sets, which contain 
only lines within a small eval-interval around 0.00:

Drawkiller_balanced: 3869 lines with Komodo-eval inside [-0.09;+0.09]
Drawkiller_balanced_500: 500 lines with Komodo-eval inside [-0.09;+0.09]

This leads to little higher draw-rates, but also to wider Elo-spreadings.
Checkout the testing-results.

I recommend using it, if you want to test engines, wich are very close
in strength!

I believe, that 3869 lines are quite too small for building opening-books
out of these lines, so I did not do it. But if you want to build a book -
no problem. Use the pgn-file Drawkiller_balanced.pgn to build a book in
any GUI, you like...all lines are 17 moves (34 plies) deep, mention, that
all your book-building settings are correct! If the book-lines are shorter,
Drawkiller will not work!!!

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Whats new in V1.5 (compared to initial release of Drawkiller?):

The Drawkiller_small folder, which contains 500 opening lines (PGN and EPD-format) 
with only 4 pawn-plies (instead of 6/8 pawn-plies in the Drawkiller big/normal/tournament files).

These 500 opening-lines gave the best results of all Drawkiller sets:
lowest draw-rate and widest Elo-spreading and lowest average game-duration ! 
Check out the testing results...

So, if 500 different opening lines are enough for your testings and tournaments, use them!!!


