Author: Robert Hyatt
Date: 05:46:09 12/06/99
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On December 06, 1999 at 02:54:30, Harald Faber wrote: >On December 05, 1999 at 22:35:23, Michael Fuhrmann wrote: > >>Bob Hyatt stated in a recent post that all chess programs have "absolutely >>glaring holes." What are the specific weaknesses of some of the top programs. > >In most cases it is their own king safety. That is certainly a big one. Another is over-rating the attacking chances relative to the opponent's king safety. IE many programs think that after Bxg3 hxg3 that white's king is very unsafe, when in reality, it is not with a doubled pawn at g3. Passed pawns. Many over-value these, to the point that they will create an advanced one that becomes lost laster. Others have no clue about the advantage of an outside (or distant) passed pawn. An ancillary point here is that even if a program recognizes a passed pawn as good (outside passed pawn) many don't recognize a 'distant majority' which is essentially the same thing. I have seen more than one program trade into a K+P vs K+P (multiple p's on both sides) ending that was dead lost, even though they might have been a pawn up or have a more advanced passer. Some value a rook on the 7th too highly, particularly after all the pawns have advanced and the king is centralized. A rook on the 7th there isn't doing anything, yet more than one program is very happy with it. Some (including older versions of crafty) value connected passed pawns more valuable than two isolated passed pawns... This is wrong in king and pawn (only) endings... The list goes on and on...
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