Author: Miguel A. Ballicora
Date: 07:39:50 09/30/01
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On September 30, 2001 at 06:15:44, José Carlos wrote: >On September 29, 2001 at 20:15:16, Gareth McCaughan wrote: > >>José Carlos wrote: >> >>> The point is not the move, but the eval. The program must >>> know white is winning: >>> >>> [D]R4rk1/5pp1/5q1p/1p1Qp3/8/1B6/1PP2bPP/5K2 w - - 0 1 >>> >>> Qxf7+ and after the changes, the pawn ending is won. >> >>Crafty 18.11, Athlon 1GHz, has +0.8 after 0.4 seconds (8 ply), >>rising to 0.93 after 11 seconds, 1.17 after 28 seconds, 1.36 >>after 6 minutes. It plays Qxf7+ at all depths. >> >>-- >>g > > It doesn't surprise me at all. Crafty is probably the best in the world >evaluatiing pawn endgames. > > José C. Anyway, the position "as is" is not perfect for a test because white will want to play Qxf7 even if doesn't understand the upcoming pawn endgame (because Qxf7 just win a pawn). What is very good is the idea, so I try to improve the original position in a way that the first move gives an idea that the program understand the endgame. [D]8/4k1p1/1p2B2p/4p3/8/4P2P/1PP1KbP1/8 b - - am Bxe3; Crafty 17.14 avoids Bxe3 in an instant without any problem even in my K6-II 400 mhz. How about other programs? The test is simple but I like it in the modified version because it tells me fi a program understand a couple of concepts. For instance, Gaviota wants to play Bxe3, So I know what to modify :-). Regards, Miguel
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