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Subject: Re: One mate to solve.

Author: leonid

Date: 04:54:35 10/06/01

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On October 06, 2001 at 05:07:58, Tim Foden wrote:

>On October 05, 2001 at 16:02:14, Paul wrote:
>
>>On October 05, 2001 at 12:59:56, leonid wrote:
>>
>>>Today, after good explantion of how it must be done, I installed Chest (Heiner's
>>>mate solver). It do the wonders on brute force search. I went to see some
>>>positions that otherwise will be too slow for me to solve. It could be that you
>>>can help me with one position. Your computer and hash could make solution more
>>>speedy. Mine is Celeron 600Mhz, 64M. This position is actually one from three
>>>similar positions one of which went to Web. This last was left as less
>>>accessible. Just say me how far you went, or what solution you found.
>>>
>>>[D]kq4BK/pq4QQ/2qqnP2/1NnqQnN1/2QBqB2/5r2/RQ4qr/RQ4bb w - -
>>>
>>>Thanks,
>>>Leonid.
>>
>>For now here's what Pretz found:
>>
>>00:40 WM12 12 Rxa7+ Q8xa7 Rxa7+ Kb8 Ra8+ Kxa8 Q1a1+ Qca6 Qxa6+ Nxa6 Qc8+ Qdb8
>>Qexb8+ Nxb8 Nc7+ Nxc7 Qxb8+ Qxb8 Qxb8+ Kxb8 Qxc7+ Ka8 Qb8#
>>
>>A mate in 12 in 40 seconds.
>
>Pretz did very well to find a mate in 40 seconds!  Green Light took over 6
>hours!
>
> 10  20:53      ++ 671083k  Qxb7+   (a=21.81 b=22.61 e=22.61)
> 10  39:20 +29.914   1392m  Qxb7+ Qbxb7 Rxa7+ Kb8 Ra8+ Qxa8 Nxd6+ Qxb2 Qxb2+
>                              Rb3 Rxa8+ Qxa8 Qbxb3+ Qab7 Ndxe4+ Qxe5 Bfxe5+ Nc7
>                              Bxc7+ Ka8 Qxb7+ Kxb7 Nxc5+ Ka8 Bxh2 Bxd4 Qxf5
> 10 6:04:59 +Mate12  13318m  Nc7+ Qcxc7 Rxa7+ Q8xa7 Rxa7+ Kb8 Rxb7+ Qdxb7 Qxb7+
>                              Qexb7 Qxb7+ Kxb7 Qxc7+ Nxc7 Qb5+ Kc8 Qee8+ Nxe8
>                              Qxe8+ Qd8 Qc6+ Qc7 Qxc7#
> 10 6:24:27 +Mate12  14263m  Nc7+ Qcxc7 Rxa7+ Q8xa7 Rxa7+ Kb8 Rxb7+ Qdxb7 Qxb7+
>                              Qexb7 Qxb7+ Kxb7 Qxc7+ Nxc7 Qb5+ Kc8 Qee8+ Nxe8
>                              Qxe8+ Qd8 Qc6+ Qc7 Qxc7#
> 11 8:12:18 +Mate12  19413m  Nc7+ Qcxc7 Rxa7+ Q8xa7 Rxa7+ Kb8 Rxb7+ Qdxb7 Qxb7+
>                              Qexb7 Qxb7+ Kxb7 Qxc7+ Nxc7 Qb5+ Kc8 Qee8+ Nxe8
>                              Qxe8+ Qd8 Qc6+ Qc7 Qxc7#
> 11 10:00:11   1/73           Rxa7+  >exit
>
>Cheers, Tim.

Hi, Tim!

I don't know if I asked you this some time before but I am curious to know. Do
you have in your solver equal way written plys, or you have specialized plys? At
least, now I know already three person that use specialized plys in their
program; I am one between them. Not everybody do this. Paul, for instance, do
otherwise and still reach good result.

Cheers,
Leonid.




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