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Subject: Re: One easy mate to solve.

Author: leonid

Date: 08:45:39 11/15/01

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On November 15, 2001 at 09:44:55, Paul wrote:

>On November 15, 2001 at 09:09:08, leonid wrote:
>
>>[D]2nkN3/2nqN3/2rrbb2/RBqQQqQQ/RBqNPqPQ/2qpqp2/3B4/3K4 w - -
>>
>>Please indicate your result.
>>
>>Thanks,
>>Leonid.
>
>Hi Leonid,

Hi!

>Haha! .. that was a surprise when I saw what Pretz came up with:
>
>1. Nexc6+ Qcxc6 2. Qgxf6+ Qxf6 3. Qexf6+ Qxf6 4. Qxf6+ Qe7 5. Qxe7+ Nxe7 6.
>Nxe6+ Nxe6 7. Ra8+ Nc8 8. Rxc8+ Kxc8 9. Nxd6+ Kd8 10. Ra8+ Qxa8 11. Qxa8+ Qc8
>12. Qe8+ Kc7 13. Qexc8+ Kb6 14. Qa5#
>
>So a mate in 14! I think I must have a bug ...

I don't think so. It is mate in 13. Verified it 12 moves deep by brute force to
be sure. Easy branching factor. Found mate in 13 by selective. Your, probably,
went just one move deper to find its mate. Good result.

I see that you have almost no competition here. Your selective look like to be
very effective. I still hope that somebody will come with Chess Master solution
to see better your and mine position.

What was your time here?

Mine by brute force took 1 hour and 50 min for 12 moves to say "No". Selective
in 13, took 9 seconds.

Cheers,
Leonid.

>Groetjes,
>Paul



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