Author: Dann Corbit
Date: 11:30:20 10/06/03
Go up one level in this thread
On October 06, 2003 at 13:59:30, Slater Wold wrote: >On October 06, 2003 at 13:56:33, Dann Corbit wrote: > >>On October 06, 2003 at 13:51:29, Slater Wold wrote: >> >>>[D]8/6NK/8/1Bk5/P5q1/8/8/8 w - - 0 107 >>> >>>A lot of engines, after a lot of time can see this is lost. >>> >>>Crafty cannot. >>> >>>Any ideas on how to fix this? Other than waiting for Eugene to make the TB? :) >> >>Are you sure that it is lost? >> >>What is the sequence of moves that wins for black? > >Positive. Here's one engine's "proof": > >Nouvelle partie >8/6NK/8/1Bk5/P5q1/8/8/8 w - - 0 1 > >Analysis by Hiarcs 9: > >1.Rg8 > -+ (-3.09) Profondeur: 1/6 00:00:00 >1.Rg8 Rb6 > -+ (-3.30) Profondeur: 2/7 00:00:00 >1.Rg8 Rb6 > -+ (-3.05) Profondeur: 3/10 00:00:00 >1.Rg8 Dg6 > -+ (-2.97) Profondeur: 3/10 00:00:00 >1.Rg8 Dg6 2.Rf8 Df6+ 3.Rg8 > -+ (-3.07) Profondeur: 4/11 00:00:00 >1.Rg8 Dg6 2.Fe8 Df6 3.a5 > -+ (-3.00) Profondeur: 5/13 00:00:00 4kN, tb=9 >1.Rg8 Dg6 2.Rf8 Df6+ 3.Rg8 Rb6 4.Ce8 De6+ 5.Rf8 > -+ (-3.19) Profondeur: 6/14 00:00:00 8kN, tb=24 >1.Rg8 Dg6 2.Fe8 Df6 3.Ch5 De7 4.Fg6 Dd8+ > -+ (-3.13) Profondeur: 7/15 00:00:00 20kN, tb=54 >1.Rg8 Dg6 2.Fe8 Df6 3.Fb5 Rb6 4.Ce8 De7 > -+ (-3.36) Profondeur: 8/17 00:00:00 34kN, tb=104 >1.Rg8 Dg6 2.Fe8 Df6 3.Ch5 De7 4.Fb5 Rb6 > -+ (-3.37) Profondeur: 9/19 00:00:00 83kN, tb=282 >1.Rg8 Dg6 2.Fe8 Df6 3.Ch5 De7 4.Cg7 Rb6 5.Fb5 Ra5 > -+ (-3.37) Profondeur: 10/21 00:00:00 145kN, tb=591 >1.Rg8 Dg6 2.Fe8 Df6 3.Fb5 Rb6 > -+ (-3.37) Profondeur: 11/25 00:00:01 472kN, tb=1756 >1.Rg8 Dg6 2.Fe8 Df6 3.Fd7 Rb6 4.Ce8 Dd8 5.Fb5 De7 > -+ (-3.40) Profondeur: 12/25 00:00:02 724kN, tb=2949 >1.Rg8 Dg6 2.Fe8 Df6 3.Fd7 Rb6 4.Ce8 De7 5.Fb5 Ra5 6.Cg7 Df6 7.Ce8 Df5 > -+ (-3.41) Profondeur: 13/27 00:00:04 1215kN, tb=5019 >1.Rg8 Dg6 2.Fe8 Df6 3.Fd7 Rb6 4.Ce8 De7 5.Fb5 Ra5 6.Cg7 Df6 7.Ce8 Df5 > -+ (-3.41) Profondeur: 14/30 00:00:09 2434kN, tb=11428 >1.Rg8 Dg6 2.Fe8 Df6 3.Fb5 Rb6 4.Ce8 > -+ (-3.41) Profondeur: 15/35 00:00:51 15968kN, tb=52954 >1.Rg8 Df3 2.Rh7 Df7 3.Fe8 Df6 4.Fd7 Rb6 5.Rg8 Df3 > -+ (-3.44) Profondeur: 16/39 00:01:17 24555kN, tb=85389 >1.Rg8 Rd6 2.Rf7 Df3+ 3.Rg6 Re5 4.Ch5 Df5+ 5.Rh6 Rd6 6.Fa6 De6+ 7.Rg5 Dd5+ 8.Rh4 >De4+ > -+ (-3.63) Profondeur: 17/46 00:02:29 51322kN, tb=183873 >1.Rg8 Rd6 2.Rf7 Df3+ 3.Rg6 Re5 4.Ch5 Df5+ 5.Rh6 Rd6 6.Fa6 De6+ 7.Rg5 Dd5+ 8.Rh4 >De4+ > -+ (-3.88) Profondeur: 18/49 00:02:47 57330kN, tb=207961 >1.Rg8 Rd6 > -+ (-#58) Profondeur: 18/49 00:02:48 57527kN, tb=208339 >1.Rg8 Dg6 2.Fe8 Df6 3.Fb5 Rd4 4.Ce8 De7 5.Cg7 Re5 6.Fe8 Db7 7.Fb5 Rf6 > -+ (-#31) Profondeur: 18/49 00:10:16 287814kN, tb=1226066 >1.Rg8 Dg6 2.Fe8 Df6 3.Fb5 Rd4 4.Ce8 Df4 > -+ (-#31) Profondeur: 19/49 00:11:26 327024kN, tb=1373757 >1.Rg8 Dg6 2.Fe8 Df6 3.Fb5 Rd4 4.Ce8 Df4 > -+ (-#31) Profondeur: 20/49 00:11:29 328682kN, tb=1380484 >1.Rg8 Dg6 2.Fe8 Df6 3.Fb5 Rd4 4.Ce8 Df4 > -+ (-#31) Profondeur: 21/49 00:11:41 335618kN, tb=1404576 >1.Rg8 Dg6 2.Fe8 Df6 3.Fb5 Rd4 4.Ce8 Df4 > -+ (-#31) Profondeur: 22/52 00:11:54 344638kN, tb=1433107 >1.Rg8 Dg6 2.Fe8 Df6 3.Fb5 Rd4 4.Ce8 Df4 > -+ (-#31) Profondeur: 23/53 00:12:22 362350kN, tb=1488420 >1.Rg8 Dg6 2.Fe8 Df6 3.Fb5 Rd4 4.Ce8 Df4 > -+ (-#31) Profondeur: 24/56 00:13:16 392969kN, tb=1592392 >1.Rg8 Dg6 2.Fe8 Df6 3.Fb5 Rd4 4.Ce8 Df4 > -+ (-#31) Profondeur: 25/57 00:14:38 437519kN, tb=1740029 >1.Rg8 Dg6 2.Fe8 Df6 3.Fb5 Rd4 4.Ce8 Df4 > -+ (-#31) Profondeur: 26/61 00:17:54 543503kN, tb=2069166 >1.Rg8 Dg6 2.Fe8 Df6 3.Fb5 Rd4 4.Ce8 Df4 > -+ (-#31) Profondeur: 27/62 00:26:04 791397kN, tb=2781311 > >(, - 05.10.2003) This indicates that Rg8 loses. How about Kh6?
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