Author: Uri Blass
Date: 02:17:19 06/24/01
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On June 24, 2001 at 03:40:46, Sune Larsson wrote: > > [D]8/6kP/8/3b1PK1/8/6N1/8/8 w - - 0 1 > > In this position white wins with 1.Nh5+. If black takes > the h7-pawn then the black bishop goes to heaven. > > When trying this position with Gambit Tiger, I got some > strange output. In analyse mode it likes 1.h8B with a draw. > Very puzzling indeed. > > >Analyse by Gambit Tiger 2.0 > >00:00:00.3 2,98 12 96204 Nh5+ Kh8 Nf6 Bb3 Kf4 Kg7 Kg4 Bc4 Kg5 Bf7 Kh4 Bc4 >00:00:00.0 3,08 12 110478 Nh5+ Kh8 Nf6 Bb3 Kf4 Kg7 Ke5 Bc2 Ke6 Bd1 Kd6 Bb3 Kc7 >00:00:01.2 2,18 13 359519 Nh5+ >00:00:02.1 1,56 14 620558 Nh5+ Kh8 Nf6 Bb3 Ng8 Kxh7 Ne7 Kg7 f6+ Kf8 Nf5 Be6 Nd4 >Bg8 Kf5 Ke8 >00:00:04.6 1,69 14 1174926 h8B+ Kxh8 Kf6 Bg8 Ke7 Kg7 f6+ Kg6 Ne4 Kf5 Nc3 Kg6 Ne2 >Kf5 Nd4+ Ke5 Nc2 >00:00:04.8 1,69 15 1388715 h8B+ Kxh8 Kf6 Bg8 Ke7 Kg7 f6+ Kg6 Ne4 Kf5 Nc3 Kg6 Ne2 >Kf5 Nd4+ Kg6 Nc6 Kf5 >00:00:06.5 1,69 16 1885192 h8B+ Kxh8 Kf6 Bg8 Ke7 Kg7 f6+ Kg6 Ne4 Kf5 Nc3 Kg6 Ne2 >Kf5 Nd4+ Kg6 Nc6 Kf5 Nd8 >00:00:09.4 1,71 17 2770718 h8B+ Kxh8 Kf6 Bg8 Ke7 Kg7 f6+ Kg6 Ne4 Kf5 Nc3 Kg6 Nd1 >Kf5 Ne3+ Kf4 Kf8 Be6 Nc2 >00:00:13.9 1,71 18 4108035 h8B+ Kxh8 Kf6 Bg8 Ke7 Kg7 f6+ Kg6 Ne4 Kf5 Nc3 Kg6 Nd1 >Kf5 Ne3+ Kg5 Nc2 Kf5 Nd4+ >00:00:20.5 1,73 19 6698978 h8B+ Kxh8 Kf6 Bg8 Ke7 Kg7 f6+ Kg6 Ne4 Kf5 Nd6+ Kg6 >Nb5 Kf5 Nd4+ Kg6 Ne6 Kf5 Nc5 >00:00:34.9 1,73 20 11655854 h8B+ Kxh8 Kf6 Bg8 Ke7 Kg7 f6+ Kg6 Ne4 Kf5 Nd6+ Kg6 >Nb5 Kf5 Nd4+ Kg6 Nc6 Kf5 Nb8 >00:01:44.2 1,73 21 36549655 h8B+ Kxh8 Kf6 Bg8 Ke7 Kg7 f6+ Kg6 Ne4 Kf5 Nd6+ Kg6 >Nb5 Kf5 Nd4+ Kg6 Nc6 Kf5 Nd8 >00:03:03.0 1,73 22 63301063 h8B+ Kxh8 Kf6 Bg8 Ke7 Kg7 f6+ Kg6 Ne4 Kf5 Nd6+ Kg6 >Nb5 Kf5 Nd4+ Kg6 Nc6 Kf5 Nd8 > >Sune I suspect that you did not use the KNP vs KB tablebases otherwise tiger could see that h8B+ Kxh8 is a draw. Uri
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