Author: David Rasmussen
Date: 04:42:14 01/15/03
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On January 15, 2003 at 07:35:38, Uri Blass wrote: > >I do not see how null move pruning effect stalemate detections. > >Cases when my evaluation detects stalemate immediately after null move are very >rare and I do not see how these cases can do demage to the program. > I'm not saying that any of these things "damage" the program, I just want to be absolutely clear *why* not, if not. In normal situations the logic of null move pruning makes sense: "If I do nothing, how good can my opponent do?" But in the presence of repetitions, fifty moves rule and stalemate, it becomes kind of pathologic, I think. "If I do nothing, he/I is/am stalemate" or "If I do nothing, he/I will reach the fifty moves rule" "If I do nothing, there I/he can force a repetition" All of this makes no sense, since a null move isn't legal. /David
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