Author: Danniel Corbit
Date: 00:46:28 05/06/98
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On May 06, 1998 at 00:31:29, Howard Exner wrote: >On May 05, 1998 at 20:36:08, Danniel Corbit wrote: > >>Argh. Sorry about the empty content on the previous post. Anyway, are >>there any programs that can construct a draw from the KK KUP2 >>Crafty/CM5500 match? It seems that computers might have a disadvantage >>here, because they will need to throw away a rook for a pawn and the >>advantage won't be realized until much later. >>Or is there a way to prevent the capture of the two white pawns? > >I think that white can hold on to its f pawn in this game after >something >like Rxd7 followed by g7-g5 (white replys f4-f5). Crafty I believe would >spot this if it were possible, thus the huge minus score it is >producing. Just the same, I would like to see this one out to its bitter end. I wonder if the big drop in loss of a rook for a pawn does not blind Crafty to deep future values along that line. From the current position, that move is now forced. I assume that Crafty thereafter will focus on the elimination of that final pawn. From a 'human' standpoint, I would not resign yet, but maybe that is only because I cannot forsee the inevitable well enough. >As a side here is an oddball position that will give your favorite >chess program a nervous breakdown. It combines the two Knight theme and >the drawing c pawn on the 7th theme. It's just a fun position that >would never occur in a real game. > >K6n/2P5/1q6/8/8/7k/8/n7 b > >White: Ka8 Pc7 >Black: Kh3 Qb6 Na1 Nh8 > >Black to move cannot win this position despite the huge material >advantage. Computers will know in there search that exchanging the >Queen for the pawn will lead to a draw but probably most, if not all, >will give black a big plus score in the eval. > >Black's best try is to enter a QNK v QK ending (white will win one of >the >black Knights with a check/fork) but that is a draw also. Unless Ferret >finds a mate in two hundred and something :-) I'll have to let this one crank. It seems funny that a huge positive eval would result when the result is fairly obvious.
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