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Subject: Re: Try this mate.

Author: leonid

Date: 04:06:31 10/26/01

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On October 26, 2001 at 02:07:30, Angrim wrote:

>On October 25, 2001 at 21:10:44, leonid wrote:
>
>>[D]3BBr2/Pq1Q2QK/1qr2R2/kbbpN3/nq1Rr3/NqP2q2/nq1Q2Q1/3QQqQ1 w - -
>>
>>And please indicate your result.
>>
>>Thanks,
>>Leonid.
>
>ok
>proved that move a7a8r wins, 15 turns
>PN2:12813337 evals, 280786 expands, 44.98 seconds
>
>Now how about trying to prove the mate for that position that so
>many people were searching to find the best move?
>I didn't see any other posts in that thread by the mate-solving group.
>
>http://www.icdchess.com/forums/1/message.shtml?193921
>and I posted my results on it:
>http://www.icdchess.com/forums/1/message.shtml?194094
>The position was:
>[D]3r1rk1/2n1nppp/1pp1p3/p2qP2Q/P1RPN3/2R5/1P2NPPP/6K1 w - -

Hi, Angrim!

I looked into your position and, by precaution, into your solution. Position
could be just too deep for my program. Mine goes only 13 moves deep and no more.
In the next version, when it will be no more DOS program, will make it much
deeper.

Your time for my position is good. I was not able to solve it by brute force
since 9 moves took already 4 hours and 39 min. Only 10 move is not sure for me.
In 11 mate existe and was solved by selective. Probably somebody will go in it
with Heiner solver that is quick in brute force and use hash successfully.

Cheers,
Leonid.

>Angrim



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