Author: leonid
Date: 02:30:17 11/05/03
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On November 05, 2003 at 02:18:37, Vincent Lejeune wrote: >On November 04, 2003 at 11:06:27, leonid wrote: > >>Hi, >> >>Try the next position that have good branching factor and, probably, will be >>easy to solve by selective, or by brute force search. >> >>[D] 1qkrr3/Rn2q3/PRPBqQ2/nqpbqB2/NQ2Nb2/1Q2Qq2/1Q2Qq2/1K2Qq2 w - - >> >>Please indicate Your result and the way You solved this position. >> >>Cheers, >>Leonid. > >barton 2800+ >CM9000 SKR + ss=16 > >Time Depth Score Positions Moves >---- ---- ---- ---- ---- >0:02 1/3 7.25 366007 1.Bxe6+ Q7xe6 2.axb7+ Nxb7 3.Qxe6+ > Bxe6 4.Nxf2 Qxe1+ 5.Qexe1 Qfxe3 > 6.Rxb5 >0:03 1/3 8.47 547234 1.cxb7+ Nxb7 2.axb7+ Qbxb7 3.Bxe6+ > Bxe6 4.Rxb5 Bxb3 5.Nb6+ Qxb6 6.Rxb6 >0:57 1/4 11.12 10432202 1.cxb7+ Bxb7 2.Bxe6+ Q7xe6 3.Qfxe6+ > Rxe6 4.axb7+ Nxb7 5.Bxe5 Q1xe2 > 6.Q1xe2 Qbxe2 7.Nxf2 >5:17 1/5 13.19 67271519 1.cxb7+ Bxb7 2.axb7+ Qbxb7 3.Raxb7 > Q1xe1+ 4.Qbxe1 Qexe4+ 5.Qxe4 Qxe4+ > 6.Qxe4 Qxe1+ 7.Qxe1 >19:45 1/6 13.35 270934408 1.cxb7+ Bxb7 2.axb7+ Qbxb7 3.Raxb7 > Q1xe1+ 4.Qbxe1 Qexe4+ 5.Qxe4 Qxe1+ > 6.Qxe1 Qxe4+ 7.Qxe4 Qf1+ 8.Ka2 >3:55:55 1/7 16.61 -1004067434 1.cxb7+ Nxb7 2.Qxe6+ Q5xe6 3.Bxe6+ > Rd7 4.axb7+ Kd8 5.Bxe7+ Rexe7 6.Q2xf2 > Qxe3 7.Qh8+ Re8 8.Qf6+ Ree7 9.Qbxe3 > Bxe3 10.Rxb5 Qxf2 11.Nxf2 cxb4 > 12.Rxd5 >4:35:18 1/7 Mate11 -456533497 1.Bxe6+ Q5xe6 2.Qxe6+ Qxe6 3.cxb7+ > Bxb7 4.axb7+ Qxb7 5.Qbxc5+ Qxc5 > 6.Ra8+ Qxa8 7.Rb8+ Qxb8 8.Qxb8+ > Kd7 9.Nexc5+ Kc6 10.Qc7+ Kd5 11.Nb6# > >4:40:45 1/8 Mate11 -372607462 1.Bxe6+ Q5xe6 2.Qxe6+ Qxe6 3.cxb7+ > Bxb7 4.axb7+ Qxb7 5.Qbxc5+ Qxc5 > 6.Ra8+ Qxa8 7.Rb8+ Qxb8 8.Qxb8+ > Kd7 9.Nexc5+ Kc6 10.Qb2b5+ Kd5 > 11.Nxe6# >5:11:34 1/9 Mate11 108463547 1.Bxe6+ Q5xe6 2.Qxe6+ Qxe6 3.cxb7+ > Bxb7 4.axb7+ Qxb7 5.Qbxc5+ Qxc5 > 6.Ra8+ Qxa8 7.Rb8+ Qxb8 8.Qxb8+ > Kd7 9.Nexc5+ Kc6 10.Qc7+ Kd5 11.Nb6# It look like that Chess Master stay as the best program for solving selective mate. It not break down on heavy pieces position and find quit quickly mate as well. It is mate in 11. Mine searched 10 moves by brute to be sure that mate is not in 10 or below. By selective mate was found in 11. Cheers, Leonid.
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