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Subject: Re: One mate to solve.

Author: leonid

Date: 19:09:08 07/17/01

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On July 17, 2001 at 19:27:49, Heiner Marxen wrote:

>On July 17, 2001 at 08:33:49, leonid wrote:
>
>>Hello!
>>
>>This position you can try with every program. Its number of moves is only 89.
>>
>>[D]k1qnr3/1qq5/qn2Q3/qN1QqQ1K/qN2QqQ1/RbQQqQ2/1RrbQ3/2BB4 w - -
>>
>>Please indicate your result.
>>
>>Thanks,
>>Leonid.
>
>Hi Leonid!

Hi, Heiner!

>This one is not as easy to solve for Chest, as usual.  After 2.6 hours on a
>K7/600 with 350 MB hash it just found "no mate in 11".  The effective
>branching factor has climbed from below 4 to above 10, so the next depth
>most probably will need more than a day :-(  Hence I stop here.

You are already there. Since you found mate in 11, it is mate in 12. My
selective found mate in 12.

Was able to reach only  10 moves deep by  brute force. It took already 11 hours
and 17 min. I must for sure one day install my hash and see the difference. I
hope in  few months from now to have my Linux computer  and start writing once
again. For now I do almost nothing useful.

My branching factor, as it happened very often, have the same tendency as your.
It was 5, between 4 and 5 moves and ended by 9.2, between 9 and 10 moves.

Cheers,
Leonid.


>Cheers,
>Heiner



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