Author: Robert Hyatt
Date: 11:19:44 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)
I go to the end of your line and get nothing but draw scores.
14-> 1.04 -0.01 5. Bd7 Qg5+ 6. Kf8 Qd5 7. Ke7 Qxd7+
<EGTB> (s=2)
15 1.79 -0.01 5. Bd7 Qg5+ 6. Kf8 Qd5 7. Ke7 Qxd7+
<EGTB>
15-> 2.88 -0.01 5. Bd7 Qg5+ 6. Kf8 Qd5 7. Ke7 Qxd7+
<EGTB> (s=2)
16 14.55 -0.01 5. Bd7 Qg5+ 6. Kf8 Qd5 7. Ke7 Qxd7+
<EGTB>
16-> 18.23 -0.01 5. Bd7 Qg5+ 6. Kf8 Qd5 7. Ke7 Qxd7+
<EGTB>
17 1:54 -0.01 5. Bd7 Qg5+ 6. Kf8 Kc3 7. Bb5 Qc5+
8. Kg8 Kb4 9. Kh8 Qxb5 <EGTB>
17-> 2:11 -0.01 5. Bd7 Qg5+ 6. Kf8 Kc3 7. Bb5 Qc5+
8. Kg8 Kb4 9. Kh8 Qxb5 <EGTB>
Note that your piece names are hard for us SAN folks to read. IE I know
a Queen is a "D", but I thought a knight was a "S" and a bishop was a
"L"??
Crafty reports draw scores all the way through starting at the initial
position. I therefore have no idea what is wrong unless it is a simple
matter of not extending in the right place to see some subtle threat.
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