Author: Uri Blass
Date: 08:14:56 02/16/03
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On February 16, 2003 at 11:01:49, Roy Brunjes wrote: > >In a game between Fritz 8 and a custom personality of mine for CM9000, the >following position arose in a 15/10 game: > >[D] 5Q2/8/2p4k/1p1pP3/8/6KP/8/q7 b - - 0 45 > >Black here should easily draw with ... Kh7. Fritz 8 thinks for almost 30 >seconds on my Athlon 700 MHz machine and plays ... Kh5 and scores the position >as 0.00 expecting a draw. > >CM9000 immediately shows evals nearly one pawn in its favor and after a few more >moves, Fritz shows an eval of more than 4 pawns in White's favor. > >Curious that Fritz would err so greatly in a simple position. Is it a bug or is >it explainable some other way? No bug Movei like many other programs also evaluates the position after Kh7 as 0.00 The "bug" is in chessmaster that did not know that it is a draw and won the game. CM9000 for some reason does not know to count material and cannot see that black is a pawn up. It evaluates the unstoppable passed pawn as clearly more than one pawn. Chessmaster "suffers" from that "bug" for year and this is one of the reasons that it is a good program. Uri
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