Author: José Carlos
Date: 03:36:25 07/18/03
Go up one level in this thread
On July 17, 2003 at 18:22:32, Sune Fischer wrote: >On July 17, 2003 at 18:14:18, Dieter Buerssner wrote: > >>On July 17, 2003 at 18:08:33, Sune Fischer wrote: >> >>>Can your engine do what Crafty, Yace and Ruffian can't? >>> >>>8/3K4/6Q1/8/8/8/5k1p/8 w - - >> >>This is indeed a problem, that is itching me. I fear, it is not too easy (in >>more general cases). > >Yes I know. I'm implementing pawn races at the moment, and apparently winning >the race is not always enough :( > >I was interested in this position here: >[D]8/8/4K3/4P2p/8/5k2/8/8 w - - > >Actually Kf5 wins, the king location makes a big difference here. Some engines >take a while (~15 plies) to see that it is better than e.g. Kd7. > >-S. Anubis v0.00.0012 (c) Jose Carlos Martinez Galan 1 -0.06 0.01 7 e6f5 2 -0.16 0.03 26 e6f5 h5h4 3 0.04 0.04 105 e6f5 h5h4 e5e6 4 -0.06 0.25 265 e6f5 h5h4 e5e6 h4h3 5 0.14 0.58 661 e6f5 h5h4 e5e6 h4h3 e6e7 6 0.00 0.91 1349 e6f5 h5h4 e5e6 h4h3 e6e7 h3h2 e7e8Q h2h1Q 7 0.00 1.26 2705 e6f5 h5h4 e5e6 h4h3 e6e7 h3h2 e7e8Q h2h1Q 8 10.00 1.67 5684 e6f5 h5h4 e5e6 h4h3 e6e7 f3e3 e7e8Q e3d3 e8d7 d3c3 9 10.00 2.07 10856 e6f5 h5h4 e5e6 h4h3 e6e7 f3e3 e7e8Q e3f3 e8d7 f3g2 10 10.00 2.49 18786 e6f5 h5h4 e5e6 h4h3 e6e7 f3g3 e7e8Q g3h4 e8c6 Note that it takes a lot of time (1.67 seconds for 5684 nodes) because I use a debug version which prints tons of search info. If I force Kd7 it's a clear draw [D]8/3K4/8/4P2p/8/5k2/8/8 b - - 1 0.52 0.00 9 h5h4 2 0.32 0.04 35 h5h4 e5e6 3 0.42 0.07 149 h5h4 e5e6 h4h3 4 0.22 0.26 374 h5h4 e5e6 h4h3 e6e7 5 0.00 0.66 897 h5h4 e5e6 h4h3 e6e7 h3h2 e7e8Q h2h1Q 6 0.00 1.12 1872 h5h4 e5e6 h4h3 e6e7 h3h2 e7e8Q h2h1Q 7 0.00 1.60 3538 h5h4 e5e6 h4h3 e6e7 h3h2 e7e8Q f3g2 8 0.00 2.03 6210 h5h4 e5e6 h4h3 e6e7 h3h2 e7e8Q f3g2 e8f7 9 0.00 2.62 10209 h5h4 e5e6 h4h3 e6e7 h3h2 e7e8Q f3g2 e8f7 h2h1Q 10 0.00 3.10 17992 h5h4 e5e6 h4h3 e6e7 h3h2 e7e8Q f3g2 e8f7 h2h1Q f7e8 11 0.00 3.63 32069 h5h4 e5e6 h4h3 e6e7 h3h2 e7e8Q f3g2 e8g6 g2h1 g6e8 h1g2 12 0.00 4.17 54762 h5h4 e5e6 h4h3 e6e7 h3h2 e7e8Q f3g2 e8g6 g2h1 g6e8 h1g2 13 0.00 4.83 99796 h5h4 e5e6 h4h3 e6e7 h3h2 e7e8Q f3g2 e8g6 g2h1 g6e8 h1g2 14 0.00 5.57 157218 h5h4 e5e6 h4h3 e6e7 h3h2 e7e8Q f3g2 e8g6 g2h1 g6e8 h1g2 José C.
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