Author: Gerd Isenberg
Date: 12:27:43 07/22/03
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On July 22, 2003 at 15:11:35, Dieter Buerssner wrote: >On July 22, 2003 at 15:06:57, Gerd Isenberg wrote: > >>really? You leave eval if greater beta and in check in qsearch? > >I wrote > beta, but it was wrong. >= beta was intended. Sure > >No, Yace won't do it (by default settings) But many engines will do this. After >all, for many engines it costs some time, to check, whether in check or not. >Whether doing such a test pays out or not, is not clear to me. Ok, qsearch error margin is huge, but +VALUE_QUEEN instead of ply-VALUE_MATE is very huge. I never tried it, or even thought about it before. May be i should? But i use legal movegeneration. And my static eval is able to detect most mates in one or even more. Also mate threats against the side to move - a spin off from king safety. Hmm, of course there are lazy nodes in qsearch, but in check? Very surprised... Gerd > >Regards, >Dieter
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