Author: Roy Eassa
Date: 08:56:18 09/05/02
Go up one level in this thread
On September 04, 2002 at 06:24:35, Paul wrote: >On September 04, 2002 at 02:34:48, Eduard Nemeth wrote: > >>[D]B2k4/KPpP4/n1Pb4/P5p1/5p2/5P2/8/8 b - - 0 1 >> >>Which program see a mate in 20 moves? >> >>Eduard > >Hi Eduard, > >My program Pretz (with slightly changed extensions), on a p3/1000, says this: > >00:45 BM20 15 Nb8 Kxb8 Bc5 a6 Bd4 a7 g4 fxg4 f3 g5 f2 g6 f1=Q g7 Bxa7+ Kxa7 Qa1+ >Kb8 Qxg7 Ka7 Qa1+ Kb8 Qb1 Ka7 Qb6+ Kb8 Qxc6 Ka7 Qa4+ Kb8 Qxd7 Ka7 Qd4+ Kb8 Ke7 >Kxc7 Qd6+ Kc8 Qd8# > >groetjes, >Paul My result (manually & using Shredder) is slightly different, but the same in the essential parts. 1...Nb8 2.Kxb8 Bc5 3.a6 g4 4.a7 Bg1 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 Qd4+ 18.Kb8 Ke7 19.Kxc7 Qd6+ 20.Kc8 Qd8# Here is what you give, with move numbers added for clarity: 1...Nb8 2.Kxb8 Bc5 3.a6 Bd4 4.a7 g4 5.fxg4 f3 6.g5 f2 7.g6 f1=Q 8.g7 Bxa7+ 9.Kxa7 Qa1+ 10.Kb8 Qxg7 11.Ka7 Qa1+ 12.Kb8 Qb1 13.Ka7 Qb6+ 14.Kb8 Qxc6 15.Ka7 Qa4+ 16.Kb8 Qxd7 17.Ka7 Qd4+ 18.Kb8 Ke7 19.Kxc7 Qd6+ 20.Kc8 Qd8#
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