Author: Uri Blass
Date: 09:21:01 08/30/04
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On August 30, 2004 at 07:36:45, Volker Böhm wrote: >Hi Uri, > >do you allways check all evades in qsearch or only until a certain ply as for >checking moves? > >Greetings Volker only until a certain ply but that ply is late. I also do not check all captures and do it only until a certain ply. I practically have 2 functions of qsearch int Quies(int alpha, int beta,int depth) int quiesmall(int alpha,int beta,int depth) Quies search checks and captures and when the depth is small enough Quies calls quiesmall (quiesmall does not make checking moves that are not captures but it calculate all replies to check unless the remaining depth is small enough and when the remaining depth is 0 even captures are not tried. Quies usually starts with depth=7 when depth=5 I call quiesmall and when depth<=2 I do not generate replies to check and when depth=0 I do not make more captures and retrun static evaluation+pawn with the idea that the side to move may earn something by a capture but I do not know how much. It may be better to use static exchange evaluator but it is not very important and most qsearch do not get to the place when depth=0 or the result of the evaluation when depth=0 is not important for the final score. Uri
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