Author: Andreas Guettinger
Date: 00:03:22 09/24/04
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On September 23, 2004 at 19:48:54, Robert Hyatt wrote: >On September 23, 2004 at 17:44:25, Andreas Guettinger wrote: > >>On September 23, 2004 at 16:58:33, Roman Hartmann wrote: >> >>>hello all, >>> >>>while testing my move generator (10x12 array, only legal moves) and comparing >>>the perft result from Crafty and my own results I noticed that my results differ >>>for some positions a bit. As the results start to differ only at some depth it's >>>not that easy to track this bug. Although I'm quite certain that the problem is >>>somehow related to EP-moves I wasn't able to solve this riddle yet. >>> >>>By searching the web I found some websites with perft results from other chess >>>engines with numbers even more off than the results from my move generator. >>> >>>some results -total nodes- from my move generator (proper Results from Crafty): >>>rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1 >>>perft 4: 20603 ok >>>perft 5: 5072212 ok >> >>perft 5: nodes: 4865609 >> >>This is the starting position, right? >>Your Crafty version must be broken. >> >>regards >>Andy > > >?? > >That is actually the correct number... I didn't understand what he meant with -total nodes-. I don't calculate perft this way. When I enter perft 5 in crafty I get 4865609, the same I get when I enter perft 5 in my engine. regards Andy
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