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Subject: Re: Test Move and Position for Pawn Promotion

Author: Terry McCracken

Date: 06:53:30 04/02/02

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On April 02, 2002 at 03:16:05, Daniel Clausen wrote:

>On April 01, 2002 at 19:31:26, Terry McCracken wrote:
>
>>On April 01, 2002 at 18:42:20, Miguel A. Ballicora wrote:
>>
>>>On April 01, 2002 at 17:56:12, Art Basham wrote:
>>>
>>>>Here white plays Bxg6..!!
>>>>(taken from the Yazgac test suite...)
>>>>
>>>>[D]r1b5/p2k1r1p/3P2pP/1ppR4/2P2p2/2P5/P1B4P/4R1K1 w - -
>>>>
>>>>I do not know if a computor program can find this one or not..:-)
>>>
>>>Many can, but the problem is that it is not the only solution.
>>>IIRC crafty chooses the prosaic cxb5 that also wins (with the idea of Ba4 and
>>>b6+). The pressure is too much for black to take.
>>>
>>>Regards,
>>>Miguel
>>
>>True but it's about finding the "Best Move" and _all_ programmes look at cxb5
>>first and is a good move, but not the best, the programme needs to see there
>>is better, then choose it. That is what we humans "Try" to do!;)
>>
>>Terry
>
>How quick you guys always are when it comes to "move X is better than move Y".
>What exactly is your proof that Bxg6 is any better than cxb5? How many moves to
>checkmate for Bxg6 and how many moves to checkmate for cxb5? Or how do you
>define "move X is better than move Y" again?
>
>Note: Please don't take this as a personal attack or something, because it's
>not. :)
>
>Sargon

Bxg6 is a clear and simple win to me, I first played this position out in the
summer of 1983.

cxb5 looks convoluted and less clear.

Terry



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