Author: Franck ZIBI
Date: 08:52:43 01/12/01
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Hello Mike, When the tournament started, the latest official ZChess release was ZChess 1.2 from ... february 1999 . It was this 'young' ZChess version that played in the tournament. At that time I was still thinking that a 'Lot of Chess Knowledge' was better then search speed. This ZChess 1.2 was computing thousand of chess specific things , like the kind of opponent pieces attacking each square of the board, the kind of squares (attacked, occupied, defended, ...) in front of each passed pawn, etc... I eventually realized that, for ZChess (I do not know for others) this huge eval function was adding a lot of 'noise' to the program evaluation (somethink like polluting the eval). So from version 1.4 and +, I slowly became an adept of the KISS principle (Keep It Simple Stupid). This had some strong positive effects on ZChess: Version 2.22 is around 150/200 elo point stronger then ZChess 1.2 Best regards. >Referring to Yace and Zchess: After what I've read and heard recently about >these two, it may be quite unlikely that they would be and the end of this field >in their most recent versions IMO - but on the other hand, most of the others >will have been improved too meanwhile... > >Maybe somebody finds remarkable positions within their games, where the new >versions play better. Each such case found would provide explanation for the >somewhat surprising defeat, and furthermore show where improvement has taken >place. > >Regards, >M.Scheidl
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