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Subject: Re: Apropos blocked positions.

Author: Jeremiah Penery

Date: 18:56:49 10/06/02

Go up one level in this thread


On October 06, 2002 at 18:02:35, Uri Blass wrote:

>On October 06, 2002 at 17:33:56, Dadi Jonsson wrote:
>
>>On October 06, 2002 at 17:01:43, Dan Andersson wrote:
>>
>>>How long before your favourite engine finds the winning move?
>>>[D]5k2/1q4bQ/5p1p/p1p1pPpP/2PpP1P1/Pp1P4/1P5K/5B2 b - - 0 1
>>>A subvariation from a game I played against a computer recently. I'm black.
>>>
>>>MvH Dan Andersson
>>
>>A nice position for Black, but instead of asking for "the winning move" it's
>>more interesting to try to find ALL the moves that lead to a victory for Black.
>>
>>Ruffian likes Qc7 and sees it as a winning line in around 2 minutes on an AMD
>>1400. 1...a4 and 1...Qb6 probably also lead to the same conclusion. Possibly
>>other moves also lead to a win.
>
>
>Yace see nothing inspite of getting depth 22.
>
>On the other hand old Deep Fritz is fast in seeing Qc7 but has no idea why it is
>winning and the pv is only one move Qc7.
>Movei at depth 18 can see advantage for black with a4 but no convincing score
>(only +0.55 for black)

It takes some depth 25 to see the win with programs I've tried.



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