Author: Roy Eassa
Date: 07:10:39 05/31/02
Go up one level in this thread
On May 31, 2002 at 10:07:39, Art Basham wrote: >This old chess problem takes my Junior5 20 ply before it ann. mate in 5... > >Fritz7 ann. mate in 32, and then changes it to mate in 16....?! > >Some engines do not find 1. Be5 at all...sorry to say...; > >have some fun with this neat problem from 1875. > >[D]7k/8/5N1P/8/8/5bp1/8/B5K1 w - - Fritz had trouble on my system (1.2 GHz AMD). Here's Crafty 18.11: 1.Be5 +- (4.86) Depth: 1/3 00:00:00 1.Be5 Bc6 +- (5.02) Depth: 2/5 00:00:00 1.Ne4+ Kh7 2.Ng5+ Kxh6 3.Nxf3 +- (5.24) Depth: 2/5 00:00:00 1.Ne4+ Kh7 2.Ng5+ Kxh6 3.Nxf3 +- (5.24) Depth: 3/7 00:00:00 1.Ne4+ Kh7 2.Ng5+ Kxh6 3.Nxf3 Kg6 +- (5.04) Depth: 4/7 00:00:00 1.Ne4+ Kh7 2.Ng5+ Kxh6 3.Nxf3 Kg6 +- (5.44) Depth: 5/9 00:00:00 1.Ne4+ Kh7 2.Ng5+ Kxh6 3.Nxf3 Kg6 4.Kg2 +- (5.59) Depth: 5/9 00:00:00 1.Be5 Bc6 2.Bxg3 Bf3 3.Be5 +- (7.17) Depth: 5/9 00:00:00 1.Be5 Bd1 2.Bxg3 Be2 3.Be5 Bf3 +- (7.17) Depth: 6/12 00:00:00 9kN 1.Be5 Bc6 2.Bxg3 Bb5 3.Kf2 Bd3 +- (7.39) Depth: 7/13 00:00:00 22kN 1.Be5 Bc6 2.Bxg3 Bb5 3.Kf2 Bd3 4.Kf3 Bh7 +- (7.38) Depth: 8/14 00:00:00 38kN 1.Be5 Bc6 2.Bxg3 Bb5 3.Kf2 Bd3 4.Ke3 Bh7 5.Be5 +- (7.56) Depth: 9/14 00:00:00 88kN 1.Ne4+ +- (7.78) Depth: 9/14 00:00:00 110kN 1.Ne4+ Kh7 2.Ng5+ Kxh6 3.Nxf3 Kg6 4.Kg2 Kf5 5.Kxg3 Ke4 6.Be5 +- (7.90) Depth: 9/14 00:00:00 139kN 1.Ne4+ Kh7 2.Ng5+ Kxh6 3.Nxf3 Kg6 4.Kg2 Kf5 5.Kxg3 Ke4 6.Be5 Kd5 +- (7.90) Depth: 10/19 00:00:01 212kN 1.Be5 +- (8.30) Depth: 10/19 00:00:01 314kN 1.Be5 Bh1 2.Ng4+ Kh7 3.Kxh1 Kg6 4.Kg2 Kh7 5.Kxg3 Kg6 6.Kf4 +- (10.62) Depth: 10/19 00:00:01 632kN 1.Be5 Bh1 2.Ng4+ Kh7 3.Kxh1 Kg6 4.Kg2 Kh7 5.Bxg3 Kg8 6.Nf6+ Kf7 7.h7 Kg7 +- (10.90) Depth: 11/22 00:00:02 1217kN 1.Be5 Bh1 2.Ng4+ Kh7 3.Kxh1 Kg6 4.Kg2 Kh7 5.Bxg3 Kg8 6.Nf6+ Kf7 7.h7 Kg7 +- (11.30) Depth: 12/25 00:00:04 2963kN 1.Be5 Bh1 2.Bxg3 Bc6 3.Bd6 Bb5 4.Bf8 Bd3 5.Bg7# +- (#5) Depth: 12/25 00:00:09 7015kN 1.Be5 Bh1 2.Bxg3 Bc6 3.Bd6 Bb5 4.Bf8 Bd3 5.Bg7# +- (#5) Depth: 13/26 00:00:15 11604kN
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.