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Subject: Re: What does your engine see???

Author: Stuart Cracraft

Date: 09:18:20 08/24/04

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On August 23, 2004 at 17:53:15, Robert Hyatt wrote:

>On August 23, 2004 at 13:53:40, David Dahlem wrote:
>
>>On August 23, 2004 at 12:29:44, Robert Hyatt wrote:
>>
>>>On August 23, 2004 at 00:34:42, Stuart Cracraft wrote:
>>>
>>>>On August 23, 2004 at 00:28:10, Stuart Cracraft wrote:
>>>>
>>>>[D]6k1/1q3ppp/r7/1rp1P1n1/3p1P2/1P1R2PP/2Q4K/B4R2 b - f3 0 1
>>>>
>>>>And it holds at the 11th ply
>>>>
>>>>NULLMV TT(524288) Alpha=-282 Beta=218 Maxdepth=9999999 MaxTime=9999
>>>> 1/16  g5f3  0.01   31      409 g5f3 f1f3
>>>> 2/16  g5f3  0.01   31     1539 g5f3 f1f3 b7f3
>>>> 3/18  h2h1  0.04   46     6555 a6a1 f1a1 g5f3 d3f3
>>>> 4/22  f1f3  0.10   46    19783 a6a1 f1a1 g5f3 d3f3 b7f3
>>>> 5/22  a6a1  0.30   44    68423 a6a1 f1a1 g5f3 d3f3 b7f3 a1a3
>>>> 6/22  a6a1  0.61   44   165863 a6a1 f1a1 g5f3 d3f3 b7f3 a1a3 b5b3
>>>> 7/27  a6a1  2.33   44   613855 a6a1 f1a1 g5f3 d3f3 b7f3 a1a3 b5b3
>>>> 8/35  g5h3 19.96   66  4712723 g5h3 e5e6 a6e6 g3g4 h3f4 f1f4 e6h6 h2g3 b7h1
>>>> 9/37  g5h3 43.14   66  9160224 g5h3 e5e6 a6e6 g3g4 h3f4 f1f4 e6h6 h2g3 b7h1
>>>>a1d4
>>>>10/39> g5h3 78.28  316 14437157 g5h3 e5e6 a6e6 g3g4 h3f4 f1f4 e6e1 a1b2 b7h1 h2g
>>>>3 e1e8
>>>>10/49  g5h3 400.73 1993 77426285 g5h3 d3f3 a6h6 h2g2 g7g5 c2f5 g5f4 b3b4 b5b4
>>>>11/51  g5h3 748.93 1996 141781903 g5h3 d3f3 a6h6 h2g2 g7g5 c2f5 g5f4 g3f4 b5b4 a
>>>>1b2
>>>
>>>
>>>You may have a bug. Nh3 doesn't win.  It looks good enough to draw, but after
>>>Kxh3 black won't be winning this...
>>
>>I think i will let Pro Deo play black from this position against some strong
>>engines at long time control. The first engine to play White will be Crafty
>>19.15. :-)
>>
>>Regards
>>Dave
>
>That's fine.  But Stuart was reporting a mate score.  There is no mate here
>after Nxh3, at least not for a _long_ time...

I'm pretty shocked at this.

What about this sequence:
g5h3(0)  h2h3(0)  a6h6(0)  h3g4(0)  f7f5(0)  g4f5(0)  b7c8(0)  f5g5(0)  h6g6(0)
 g5h5(0)  c8g4(0)


Sorry about the computer algebraic and 0's...



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