Author: Steve Maughan
Date: 11:05:35 10/11/03
Go up one level in this thread
Christophe,
>1) I have written an extra engine core ("FUGU") which is extremely "tight". It
>updates an internal representation of the board that is simpler than the one
>of the classical Tiger engine, and it does not apply all the rules of chess
>(some rules like en-passant, castling, underpromoting and 50-moves rule are
>complex to handle and slow the engine down significantly). Doing without some
>rules in the deepest part of the tree goes mostly unnoticed and help to speed
>the engine up tremendously.
Now that is an interesting idea. I have heard of top programs that ignore some
rules for the whole of the search tree (e.g. Junior 5 ignored underpromotion)
but I haven't heard of anyone ignoring some rules when near the tips of the tree
(which is most of the search).
Regards,
Steve
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