Author: Ferdinand S. Mosca
Date: 14:36:59 06/27/02
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On June 27, 2002 at 17:14:16, Robert Hyatt wrote: >On June 27, 2002 at 13:38:32, Ferdinand S. Mosca wrote: > >> >>The king and pawn game is a very interesting exercise to program, is it >>difficult to perfect this ending?. >> >>How long will it take your favorite programs to see that 36. h5 is good for >>black. >>[D]8/k6p/8/2P2p2/2P1p3/7K/1P3P2/8 b - - 0 35 >>sample program analysis on Athlon xp 1600+, 64MB hash >>Analysis by Gromit 3.8.2: >> >>36...h5 37.Kg3 Kb7 38.b3 Kc7 39.b4 Kc6 40.f4 Kc7 41.b5 Kb7 42.c6+ Kb6 43.c5+ Kc7 >>44.Kh3 e3 45.Kg3 h4+ 46.Kg2 h3+ 47.Kf3 >> ± (1.09) Depth: 18 00:10:55 >>36...h5 >> ± (1.09) Depth: 19 00:10:55 >>36...h5 >> ± (1.09) Depth: 19 00:11:09 >> >>more than 11 min, and yet the score still favors white. >> >> >>Analysis by Green Light Chess 2.18: >> >>36...h5 37.Kg3 Kb7 38.b4 Kc6 39.f4 Kc7 40.b5 Kd7 41.c6+ Kd6 42.Kf2 h4 43.Kg2 e3 >>44.Kf3 h3 45.Kxe3 h2 46.c5+ Kxc5 47.c7 Kxb5 48.c8Q h1Q 49.Qxf5+ >> ± (1.27) Depth: 19 00:03:16 154355kN >>36...h5 37.Kg3 Kb7 38.b4 Kc6 39.f4 Kc7 40.b5 Kd7 41.c6+ Kd6 42.Kf2 h4 43.Kg2 e3 >>44.Kf3 h3 45.Kxe3 h2 46.c5+ Kxc5 47.c7 Kxb5 48.c8Q h1Q 49.Qxf5+ >> ± (1.27) Depth: 19 00:03:17 155502kN >> >>still favors white. >> >>Regards, >>Dinan > > >takes Crafty 1.5 seconds to lock on to the move, 5 seconds for the score >to drop below 0.00 (good for black) and 7 seconds to have a -1.5 score for >black... > > > 12 1.11 3.41 1. ... Kb7 2. Kh4 h6 3. b4 Kc7 4. Kg3 > h5 5. b5 Kb7 6. c6+ Kb6 7. Kh4 Kc7 > 8. Kxh5 > 12 1.52 ++ 1. ... h5!! > 12 1.65 0.86 1. ... h5 2. Kg3 Kb7 3. b4 Kc6 4. Kh3 > f4 5. Kg2 h4 6. Kh3 e3 7. Kg2 exf2 > 8. Kxf2 > (2) 12-> 1.66 0.86 1. ... h5 2. Kg3 Kb7 3. b4 Kc6 4. Kh3 > f4 5. Kg2 h4 6. Kh3 e3 7. Kg2 exf2 > 8. Kxf2 > 13 1.96 ++ 1. ... h5!! > 13-> 2.21 0.47 1. ... h5 2. Kg3 Kb7 3. b4 Kc6 4. Kh3 > f4 5. Kg2 h4 6. Kh3 e3 7. Kg2 exf2 > 8. Kxf2 > 14 2.93 ++ 1. ... h5!! > 14 5.26 -0.28 1. ... h5 2. Kg3 Kb7 3. b4 Kc6 4. Kh3 > f4 5. Kg2 h4 6. b5+ Kxc5 7. Kg1 e3 > 8. Kf1 exf2 9. Kxf2 > 15 6.42 ++ 1. ... h5!! > 15 7.63 -1.58 1. ... h5 2. Kg3 Kb7 3. b3 Kc7 4. c6 > Kd6 5. b4 Kxc6 6. c5 Kd5 7. b5 Kxc5 > 8. Kh4 Kxb5 9. Kxh5 > 15-> 7.93 -1.58 1. ... h5 2. Kg3 Kb7 3. b3 Kc7 4. c6 > Kd6 5. b4 Kxc6 6. c5 Kd5 7. b5 Kxc5 > 8. Kh4 Kxb5 9. Kxh5 > 16 10.33 -1.87 1. ... h5 2. Kg3 Kb7 3. b3 Kc7 4. c6 > Kxc6 5. b4 Kd6 6. b5 Kc5 <HT> > 16-> 10.92 -1.87 1. ... h5 2. Kg3 Kb7 3. b3 Kc7 4. c6 > Kxc6 5. b4 Kd6 6. b5 Kc5 <HT> > 17 16.47 -1.73 1. ... h5 2. Kg3 Kb7 3. b3 Kc7 4. c6 > Kxc6 5. b4 Kb7 6. b5 Kb6 7. Kh4 f4 > 8. c5+ Kxb5 9. c6 Kxc6 10. Kxh5 Hello Bob, How do you penalyze a doubled passer (c4)?, or is this a passer at all, and will get a passer bonus? I thought that this should not be considered a passer. Dinan
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