Author: Gerd Isenberg
Date: 12:06:57 07/22/03
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On July 22, 2003 at 14:38:35, Dieter Buerssner wrote: >On July 21, 2003 at 23:53:48, Normand M. Blais wrote: > >>After the game, I decided to let the program analyse the position again just for >>fun. But then I notice that, after finding the correct move, the pv line at >>depth 6 was ending in a checkmate while the score at that depth was 0.02. > >It is a typical consequence of using quiescence search. The details may depend >on several subtle points of the qsearch implementation. As an example, assume a >"normal" qsearch, that will return a value, when the eval > beta. But you might >be in check at this time, and actually, it might be mate already. If you don't >check for this, such things will happen. Whether checking espescially for such >things (and therby avoiding such stupid looking mainlines) will help an engine >or not, is a different question. > >Regards, >Dieter Hi Dieter, really? You leave eval if greater beta and in check in qsearch? I guess you mean has a check or a mate in one. Regards, Gerd
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