Author: John Merlino
Date: 12:07:53 03/02/01
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On March 02, 2001 at 09:29:37, Sune Larsson wrote: > > [D]8/p1p2pp1/1pP3p1/3Pb2k/4P3/5P1P/8/3K2B1 w - - 0 2 > > From Queckenstadt 1914 (published in Sydsvenska Dagbladet /Swedish newspaper/) > > Here we have a bishop ending. White is a pawn down and black has two > passers. No wonder your evals show a +score for black. But they should > change cause white is winning this position. His pawns c6,d5,e4,f3 > resembles an arrow, and once white lets it off there is fire on the board! > > Test: White to move and win - could you do that under normal tournament > conditions (40/2) > > Sune CM8000 sees 1.f4 as drawing in 1:29 (on a P3-600), but doesn't see the win in less than 5 minutes: Time Depth Score Positions Moves 0:01 7/9 -1.89 149740 1. Bf2 a5 2. Kc2 a4 3. Be1 b5 4. Bb4 g5 5. Ba3 Kg6 0:05 8/10 -1.77 484472 1. Bf2 a5 2. Kc2 a4 3. Be1 b5 4. Bb4 Kg5 5. Ba3 Kf4 0:16 9/11 -1.76 1533831 1. Bf2 g5 2. Kc2 a5 3. Be1 f6 4. Kb3 g6 5. Ka4 f5 6. Bd2 Bb2 0:24 9/11 -1.48 2213255 1. f4 Bxf4 2. Bd4 f6 3. e5 fxe5 4. Be3 Bg3 5. d6 e4 6. d7 Bh4 7. Bd2 0:32 10/12 -1.71 3003173 1. f4 Bxf4 2. Bd4 Kh4 3. e5 Bg5 4. e6 fxe6 5. dxe6 Kxh3 6. Bxg7 Be7 7. Be5 1:29 11/13 0.00 8227436 1. f4 Bxf4 2. Bd4 f6 3. e5 fxe5 4. Be3 Bg3 5. Bf2 Bf4 6. Be3 2:28 12/14 0.00 13916646 1. f4 Bxf4 2. Bd4 f6 3. e5 fxe5 4. Be3 Bg3 5. Bf2 Bf4 6. Be3 5:18 13/15 0.00 30026839 1. f4 Bxf4 2. Bd4 f6 3. e5 fxe5 4. Be3 Bg3 5. Bf2 Bf4 6. Be3 jm
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