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Subject: Re: One mate to solve.

Author: leonid

Date: 15:30:12 02/17/02

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On February 17, 2002 at 17:37:20, Hans van der Zijden wrote:

>On February 17, 2002 at 15:26:29, leonid wrote:
>
>>[D]B2R3B/2qrq3/PqNkNqRq/b6P/R1qrQ2q/P1Q1n2P/b1nNq2p/Q6K w - -
>>
>>Please indicate your result.
>>
>>Thanks,
>>Leonid.
>
>This is an illegal position. White has two doubled pawns so must have captured
>twice, but still black has sixteen pieces. Also black must have captured once.
>
>Junior 7 finds a mate in 10 on my Athlon 1200 in 1m24.
>
>1.Qe5+ Qxe5 2.Bxe5+ Kd5 3. Rxa5+ Qxa5 4.Ncxd4+ Q4c6 5.Bxc6+ Qxc6 6.Qxc6+ Kxe5
>7.N4f3+ and here ends the main variation.
>
>I was wondering why you keep posting these strange matepositions. I can
>understand you post a couple of them to test computers, but what is the use in
>keep posting new ones? No offence.

Finding mate is already something that is very strange. Usually people do
something more practical in their lives that finding forced mates.

These positions have one practical objective for those that have not that much
practical mind - they help in tuning mate solver to best possible speed. Other
positions, that look like to be from real games, are also very useful for mate
solver tuning and verification. Positions different from present (usual, or
almost usual) I created by thousands around 5 years ago. Some of them can be
found on the Web Site with my mate solver (LLchess).

Cheers,
Leonid.



>Hans.



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