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Subject: Re: Mate to solve for champions...

Author: Paul Byrne

Date: 22:02:33 04/30/01

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On April 29, 2001 at 07:32:15, leonid wrote:

>Hello!
>
>I know that I should never indicate here any position like this, but it is just
>too seductive! Only really dedicated man or highly performant mate solver can
>crunch it.
>
>[D]Qrbqkbr1/Qn3qPP/NQqQq1nB/1qNqQBq1/1Qq1q2Q/8/3RR3/4K3 w - -
>
>Please indicate your result.
>
>Thanks,
>Leonid.

That was a tough one!  My PN search went through 512MB of memory without solving
it.  PN2 got Qbxd8+ winning in 1316.46 seconds (100043829 nodes) -- the PN2 code
is set up for suicide chess though and could probably be sped up a good bit for
regular chess.

-paul



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