Author: James C. Logan
Date: 13:07:10 01/26/06
Go up one level in this thread
Amazing - my PC must be just a bit faster. I have tried this position (thanks Eduard!!) with many engines - Shredder 9 UCI, Fritz 9, Fruit 2.2.1, Gandalf 6.01, and Rybka 1.01 Beta 13. Rybka is the only other one to find it, and it took just over 1 minute on my PC. Even going a few moves into the PV, the other engines just do not see this. Analysis by AnMon5.53: 1...Bc5+ 2.Kxa6 +- (4.05) Depth: 1 00:00:00 1...Bc5+ 2.Kxa6 +- (4.05) Depth: 1 00:00:00 1...Bb4 2.Kxa6 +- (3.93) Depth: 1 00:00:00 1...Bb4 2.Kxa6 +- (3.93) Depth: 1 00:00:00 1...Bb4 2.Kxa6 +- (3.93) Depth: 2 00:00:00 1...Bc5+ 2.Kxa6 +- (3.81) Depth: 2 00:00:00 1...Bc5+ 2.Kxa6 +- (3.81) Depth: 2 00:00:00 1...Bc5+ 2.Kxa6 Ba7 3.Kxa7 +- (10.47) Depth: 3 00:00:00 1...Nb8 2.Kxb8 Ke7 +- (4.33) Depth: 3 00:00:00 1...Nb8 2.Kxb8 Be5 +- (4.22) Depth: 3 00:00:00 1...Nb8 2.Kxb8 Be5 3.a6 +- (4.36) Depth: 4 00:00:00 1...Nb8 2.Kxb8 g4 3.fxg4 f3 +- (4.47) Depth: 5 00:00:00 1...Nb8 2.Kxb8 Bc5 3.a6 Bd6 4.a7 Be5 = (0.00) Depth: 6 00:00:00 2kN 1...Nb8 2.Kxb8 Bc5 3.a6 Bd6 4.a7 Be5 = (0.00) Depth: 7 00:00:00 3kN 1...Nb8 2.Kxb8 Bc5 3.a6 Bd6 4.a7 Be5 = (0.00) Depth: 8 00:00:00 5kN 1...Nb8 2.Kxb8 Bc5 3.a6 Bd6 4.a7 Be5 = (0.00) Depth: 9 00:00:00 9kN 1...Nb8 2.Kxb8 Bc5 3.a6 Bb6 4.a7 g4 5.fxg4 f3 6.g5 f2 7.g6 f1Q 8.g7 Qc4 9.g8Q+ Qxg8 -+ (-2.11) Depth: 10 00:00:00 19kN 1...Nb8 2.Kxb8 Bc5 3.a6 Bb6 4.a7 g4 5.fxg4 f3 6.g5 f2 7.g6 f1Q 8.g7 Qc4 9.g8Q+ Qxg8 -+ (-2.11) Depth: 11 00:00:00 33kN 1...Nb8 2.Kxb8 Bc5 3.a6 Bb6 4.a7 g4 5.fxg4 f3 6.g5 f2 7.g6 f1Q 8.g7 Bxa7+ 9.Kxa7 Qa1+ 10.Kb8 Qxg7 11.Ka7 Qd4+ 12.Kb8 ³ (-0.68) Depth: 12 00:00:01 104kN 1...Nb8 2.Kxb8 Bc5 3.a6 Bb6 4.a7 g4 5.fxg4 f3 6.g5 f2 7.g6 f1Q 8.g7 Bxa7+ 9.Kxa7 Qa1+ 10.Kb8 Qxg7 11.Ka7 Qa1+ 12.Kb8 Qe5 13.Ka7 Qc5+ 14.Kb8 Qxc6 -+ (-4.48) Depth: 13 00:00:01 136kN 1...Nb8 2.Kxb8 Bc5 3.a6 Bb6 4.a7 g4 5.fxg4 f3 6.g5 f2 7.g6 f1Q 8.g7 Bxa7+ 9.Kxa7 Qa1+ 10.Kb8 Qxg7 11.Ka7 Qa1+ 12.Kb8 Qe5 13.Ka7 Qc5+ 14.Kb8 Qxc6 15.Ka7 Qc5+ 16.Kb8 Kxd7 -+ (-6.50) Depth: 14 00:00:01 168kN 1...Nb8 2.Kxb8 Bc5 3.a6 Bb6 4.a7 g4 5.fxg4 f3 6.g5 f2 7.g6 f1Q 8.g7 Bxa7+ 9.Kxa7 Qa1+ 10.Kb8 Qxg7 11.Ka7 Qa1+ 12.Kb8 Qe5 13.Ka7 Qc5+ 14.Kb8 Qxc6 15.Ka7 Qa4+ 16.Kb8 Qxd7 17.Ka7 -+ (-6.12) Depth: 15 00:00:01 235kN 1...Nb8 2.Kxb8 Bc5 3.a6 Ke7 4.Kxc7 Bd6+ 5.Kc8 g4 6.b8Q Bxb8 7.Kxb8 gxf3 8.d8Q+ Kxd8 9.a7 f2 10.Kb7 f1Q 11.Kb8 Qb5+ 12.Bb7 Qe5+ 13.c7+ Qxc7+ 14.Ka8 -+ (-6.93) Depth: 16 00:00:01 334kN 1...Nb8 2.Kxb8 Bc5 3.a6 Bb6 4.a7 g4 5.fxg4 f3 6.g5 f2 7.g6 f1Q 8.g7 Bxa7+ 9.Kxa7 Qa1+ 10.Kb8 Qxg7 11.Ka7 Qa1+ 12.Kb8 Qe5 13.Ka7 Qc5+ 14.Kb8 Qxc6 15.Ka7 Qa4+ 16.Kb8 Qxd7 17.Ka7 -+ (-6.90) Depth: 17 00:00:01 489kN 1...Nb8 2.Kxb8 Bc5 3.a6 Bb6 4.a7 g4 5.fxg4 f3 6.g5 f2 7.g6 f1Q 8.g7 Bxa7+ 9.Kxa7 Qa1+ 10.Kb8 Qxg7 11.Ka7 Qa1+ 12.Kb8 Qe5 13.Ka7 Qc5+ 14.Kb8 Qxc6 15.Ka7 Qa4+ 16.Kb8 Qxd7 17.Ka7 -+ (-#20) Depth: 18 00:00:01 505kN 1...Nb8 2.Kxb8 Bc5 3.a6 Bb6 4.a7 g4 5.fxg4 f3 6.g5 f2 7.g6 f1Q 8.g7 Bxa7+ 9.Kxa7 Qa1+ 10.Kb8 Qxg7 11.Ka7 Qa1+ 12.Kb8 Qe5 13.Ka7 Qc5+ 14.Kb8 Qxc6 15.Ka7 Qa4+ 16.Kb8 Qxd7 17.Ka7 -+ (-#20) Depth: 18 00:00:13 6484kN (Logan, 26.01.2006)
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