Author: Uri Blass
Date: 09:24:33 08/02/02
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On August 02, 2002 at 10:07:47, Brian Richardson wrote: >This is a pretty interesting position. As it happens, Tinker finds Rxc4 in >about 1 second at ply 7, BUT only with a special version of the evaluation >function that I have been testing (with little success so far) that only uses >material and piece square values. It sticks with this move with a slowly rising >score until at least ply 12 (+0.44). Funny thing is that Gerbil (also material >and piece square only eval version) does not like Rxc4, so there must be >something else going on here with extensions or something else search-related. What is your piece square table for pawn at b3 or b2? I suspect that if you use big values there you can get Rxc4 by piece square table evaluation but I think that using big values there is a mistake. of course b3 and b2 should be evaluated as more than b7 but the difference should not be very big. Uri
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