Author: Tord Romstad
Date: 08:39:23 01/26/04
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On January 26, 2004 at 10:05:13, Uri Blass wrote: >I guess that it can improve performance because you do not need to generate all >captures for the opponent but only check that the opponent cannot capture one of >your heavy pieces. Yes, that's the idea. >makemove for me also update some information that I do not need like attack >information so for me saving it can be also be productive because if none of >white's heavy pieces is attacked by black than in part of the cases it is easy >to detect that a good capture of white cannot change that fact. > >If the queen at d1 was not attacked before a5*b6 then it cannot be attacked >after it. > >There are cases when it is not trivial d2xc3 may expose the queen at d1 to >attack. You're right again. That's why it is a good idea to detect pins in the evaluation function if you want to use this kind of tricks in your qsearch. Tord
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