Author: Richard Pijl
Date: 11:41:57 06/27/02
Go up one level in this thread
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 > Baron chooses h5 after 11 seconds (AMD MP 2000+) and sticks with it. Score is no better than -1 pawn (search stopped after 30 minutes on ply 21) so it doesn't see the advantage. Richard.
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.