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Subject: Re: Mate in 36

Author: Uri Blass

Date: 02:04:05 11/01/05

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On November 01, 2005 at 04:30:08, Tord Romstad wrote:

>On October 31, 2005 at 16:12:22, Terry McCracken wrote:
>
>>How well do your engines, both commercial and noncommercial handle this mate?
>>
>>Please specify hardware used.
>>
>>[D]6q1/1p6/1r1P1rpQ/4n3/1P1K1Pk1/8/bP1B1Ppn/6b1 w - - 0 1
>
>This is a rather poor test, not only because of the artificial nature
>of the position, but also because such very long, forced mates doesn't
>really measure anything else than the maximum search depth of a program.

Not exactly and even programs with the same maximum search depth need different
time.

programs that do not do single reply extensions but only extend checks by a
single will probably also fail to find it in a reasonable time because they will
need 36 plies to find the mate.

Uri



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