Author: John Merlino
Date: 13:11:13 04/16/05
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On April 16, 2005 at 15:48:43, F. Huber wrote: >On April 16, 2005 at 15:02:50, Mike Byrne wrote: > >>while searching for info on Ruffian - found this old problem that Ruffian 1.0.1 >>solved very quickly >> >>Crafty 19.20 >>Dual Opterons >> >>White(1): [d]8/8/pp6/2pp2p1/3p2Pk/3P1K1P/5PP1/8 b - - 0 1 > >The fastest ´brute force´ mate for ChestUCI in my collection so far! :-) > >ChestUCI Ver.4.1: >CPU: Celeron 400MHz >FEN: 8/8/pp6/2pp2p1/3p2Pk/3P1K1P/5PP1/8 b - - >Search for Mate in -13 ... (Hash=64MB) >Search completed ... (Time=51.24s) >Mate in -13 found ! (00:51) >Pa6-a5 --> 1.Ke2 c4 2.Kf1 c3 3.Kg1 c2 4.Kh2 c1Q 5.g3# >Pb6-b5 --> 1.Ke2 c4 2.Kf1 c3 3.Kg1 c2 4.Kh2 c1Q 5.g3# >2 Solutions (Mate in -5) >Pc5-c4 --> 1.Ke2 cxd3+ 2.Kxd3 b5 3.Ke2 d3+ 4.Kxd3 d4 5.Ke2 d3+ 6.Kxd3 b4 7.Ke2 >b3 8.Kf1 b2 9.Kg1 b1Q+ 10.Kh2 Qg1+ 11.Kxg1 a5 12.Kh2 a4 13.g3# >1 Solution (Mate in -13) > >Regards, >Franz. An interesting test. In the CM GUI, you can't search for a brute force mate for the side that is NOT on the move, so first I forced 1...c4. Yes, I know it's cheating.... :-) It then took CM9_R1 0:12 to find the Mate in 13 in brute force mode. jm
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