Author: Drexel,Michael
Date: 10:21:31 01/09/04
Go up one level in this thread
On January 09, 2004 at 01:52:56, Slater Wold wrote: >On January 08, 2004 at 14:17:52, Drexel,Michael wrote: > >>[D] 8/6r1/8/5p1B/5N2/4k1K1/8/8 w - - 0 137 >> >>In this position Crafty 19.06 exe from Dann Corbit played 137.Bg6?? and lost. >>137.Ng6 is draw. >>I can reproduce it with Cb-native Crafty 19.06 and Crafty 19.08. > >Nice & interesting find! > >I've tested about 2 dozen engines, and only LIST, Ruffian, & Crafty fail on this >position. > >Even Turing gets it right! :| Crafty missed 137...Kc4 only with the 5 men tablebases installed. Ktulu also fails on the position. New game 8/6r1/8/5p1B/5N2/4k1K1/8/8 w - - 0 1 Analysis by Ktulu 4.2: 137.Bg6 Rxg6+ 138.Nxg6 f4+ 139.Nxf4 = (0.00) Depth: 4 00:00:00 137.Bg6 Rxg6+ 138.Nxg6 f4+ 139.Nxf4 = (0.00) Depth: 5 00:00:00 137.Bg6 Rxg6+ 138.Nxg6 f4+ 139.Nxf4 = (0.00) Depth: 6 00:00:00 2kN 137.Bg6 Rxg6+ 138.Nxg6 f4+ 139.Nxf4 = (0.00) Depth: 7 00:00:00 5kN 137.Bg6 Rxg6+ 138.Nxg6 f4+ 139.Nxf4 = (0.00) Depth: 8 00:00:00 11kN 137.Bg6 Rxg6+ 138.Nxg6 f4+ 139.Nxf4 = (0.00) Depth: 9 00:00:00 18kN 137.Bg6 Rxg6+ 138.Nxg6 f4+ 139.Nxf4 = (0.00) Depth: 10 00:00:00 29kN 137.Bg6 Rxg6+ 138.Nxg6 f4+ 139.Nxf4 = (0.00) Depth: 11 00:00:00 45kN 137.Bg6 Rxg6+ 138.Nxg6 f4+ 139.Nxf4 = (0.00) Depth: 12 00:00:00 70kN 137.Bg6 Rxg6+ 138.Nxg6 f4+ 139.Nxf4 = (0.00) Depth: 13 00:00:00 106kN 137.Bg6 Rxg6+ 138.Nxg6 f4+ 139.Nxf4 = (0.00) Depth: 14 00:00:00 162kN 137.Bg6 Rxg6+ 138.Nxg6 f4+ 139.Nxf4 = (0.00) Depth: 15 00:00:00 250kN 137.Bg6 Rxg6+ 138.Nxg6 f4+ 139.Nxf4 = (0.00) Depth: 16 00:00:00 403kN 137.Bg6 Rxg6+ 138.Nxg6 f4+ 139.Nxf4 = (0.00) Depth: 17 00:00:01 683kN 137.Bg6 Rxg6+ 138.Nxg6 f4+ 139.Nxf4 = (0.00) Depth: 18 00:00:01 1110kN 137.Bg6 Rxg6+ 138.Nxg6 f4+ 139.Nxf4 = (0.00) Depth: 19 00:00:02 1827kN 137.Bg6 Rxg6+ 138.Nxg6 f4+ 139.Nxf4 = (0.00) Depth: 20 00:00:04 3050kN 137.Bg6 Rxg6+ 138.Nxg6 f4+ 139.Nxf4 = (0.00) Depth: 21 00:00:07 5219kN 137.Bg6 Rxg6+ 138.Nxg6 f4+ 139.Nxf4 = (0.00) Depth: 22 00:00:12 8870kN 137.Bg6 Rxg6+ 138.Nxg6 f4+ 139.Nxf4 = (0.00) Depth: 23 00:00:23 16522kN Who said Computers never blunder, except in case of a bug? The strong program Ruffian would blunder horrible with 1.Bxd6?? in this drawish position: [D] 8/3r4/3p4/1kp5/2N5/3K4/7B/8 w - - 0 1 Just losing a piece. New game 8/3r4/3p4/1kp5/2N5/3K4/7B/8 w - - 0 1 Analysis by Ruffian 1.0.2: 1.Nxd6+ Rxd6+ 2.Bxd6 = (0.00) Depth: 1/3 00:00:00 1.Bxd6 ± (1.13) Depth: 1/3 00:00:00 1.Bxd6 Rxd6+ 2.Nxd6+ Kc6 = (0.00) Depth: 2/4 00:00:00 1.Bxd6 Kc6 2.Ne5+ Kxd6 3.Nxd7 Kxd7 -+ (-1.85) Depth: 3/6 00:00:00 1.Bf4 d5 2.Nd6+ Kb4 ³ (-0.69) Depth: 3/6 00:00:00 1.Bf4 d5 2.Nd6+ Kc6 3.Nf5 ³ (-0.66) Depth: 4/8 00:00:00 1.Na3+ Kb6 2.Nc4+ Kc6 3.Bf4 d5 ³ (-0.58) Depth: 4/10 00:00:00 1.Na3+ Kb4 2.Nc2+ Kb3 3.Ne3 d5 4.Be5 ³ (-0.64) Depth: 5/12 00:00:00 1.Na3+ Kb4 2.Nc4 d5 3.Nb6 Rd8 4.Be5 µ (-0.74) Depth: 6/12 00:00:00 11kN 1.Na3+ Kc6 2.Nc4 Rh7 3.Bf4 d5 4.Ne5+ Kb5 5.Kc3 µ (-0.71) Depth: 7/14 00:00:00 28kN 1.Bxd6 Kc6 2.Ne5+ Kxd6 = (0.00) Depth: 7/14 00:00:00 33kN 1.Bxd6 Kc6 2.Ne5+ Kxd6 = (0.00) Depth: 8/14 00:00:00 35kN 1.Bxd6 Kc6 2.Ne5+ Kxd6 = (0.00) Depth: 9/14 00:00:00 40kN 1.Bxd6 Kc6 2.Ne5+ Kxd6 = (0.00) Depth: 10/15 00:00:00 50kN 1.Bxd6 Kc6 2.Ne5+ Kxd6 = (0.00) Depth: 11/19 00:00:00 106kN 1.Bxd6 Kc6 2.Ne5+ Kxd6 = (0.00) Depth: 12/19 00:00:00 133kN 1.Bxd6 Kc6 2.Ne5+ Kxd6 = (0.00) Depth: 13/19 00:00:00 190kN 1.Bxd6 Kc6 2.Ne5+ Kxd6 = (0.00) Depth: 14/19 00:00:00 292kN 1.Bxd6 Kc6 2.Ne5+ Kxd6 = (0.00) Depth: 15/20 00:00:01 540kN 1.Bxd6 Kc6 2.Ne5+ Kxd6 = (0.00) Depth: 16/22 00:00:02 1075kN 1.Bxd6 Kc6 2.Ne5+ Kxd6 = (0.00) Depth: 17/25 00:00:05 2324kN 1.Bxd6 Kc6 2.Ne5+ Kxd6 = (0.00) Depth: 18/25 00:00:09 4675kN 1.Bxd6 Kc6 2.Ne5+ Kxd6 = (0.00) Depth: 19/27 00:00:14 7557kN 1.Bxd6 Kc6 2.Ne5+ Kxd6 = (0.00) Depth: 20/31 00:00:27 15016kN 1.Bxd6 Kc6 2.Ne5+ Kxd6 = (0.00) Depth: 21/32 00:00:43 24646kN Michael
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