Crafty
Crafty is a strong chess program. It is a chess engine, and
concerns itself with playing chess and not with providing a graphical
user interface. This means that Crafty is typically invoked
indirectly by using a chess client.
Crafty uses all of the search algorithms you have probably
read about and performs better than gnuchess in most positions. It has
a good set of features to use, and offers a great starting point to try
your own new search extensions.
Crafty is the son of Cray Blitz, also written by Bob
Hyatt.
Features include:
- Flexible and powerful command-line interface
- Uses the Chess Engine Communication Protocol
- Rotated bitboard data structures
- Supports multiple processors
- Negascout search
- Static exchange evaluation
- Alpha-beta pruning
- Transposition table
- Refutation table
- Evaluation cache
- Recursive null-move search
- Killer/history move ordering
- Quiescence move ordering and pruning
- Opening book
- Positional learning. Crafty learns from experience, and
makes appropriate modifications to its opening book.
The "book" command allows generation of an opening book (from PGN
data), and customization of how it is
used. The learning facilities synthesize several different approaches,
and allow various ways for the user to customize and follow
what is being learned
- Supports endgame tablebases; precompiled tablebases in
the appropriate format are freely downloadable
- Polished facilities for internet play
- Annotation - generate PGN or HTML files
- Informative log files
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Last Updated Sunday, April 29 2012 @ 09:12 AM EDT
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