Author: Jeremiah Penery
Date: 00:33:46 04/11/00
Go up one level in this thread
On April 10, 2000 at 15:54:49, Robert Hyatt wrote: >On April 10, 2000 at 11:01:43, Colin Frayn wrote: > >>I was just wondering how Crafty handles draws in its evaluation routine. I've >>been playing several 10 minute blitz games (10 min/side) between Crafty and >>ColChess and I managed to win the following two games, though I noticed that >>near the end Crafty was often giving the position as drawn to many ply (like 20 >>or more) as it thought it could draw by repetition when behind. ColChess plays >>along a few times, then realises what's about to happen and plays something >>else, whereby Crafty's analysis goes very negative again. >> >>Surely Crafty must know that ColChess will try to avoid a draw when ahead? >> >>Also, does Crafty have a contempt setting? I would have resigned both of these >>games a lot earlier :) >> >>Cheers, >>Col > >The only thing that will cause the above is drastic differences in the >evaluation. Crafty thinks that the opponent will either repeat or get a worse >position... so it assumes it will repeat. I think he means after his program has repeated the position twice already. In this case, Crafty will think it's a draw anyway, then it could play an inferior repeating move instead of trying to improve the position.
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