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Subject: Re: Mate to solve in two flavours.

Author: Heiner Marxen

Date: 09:26:43 05/09/01

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On May 07, 2001 at 17:48:03, Paul wrote:

>On May 07, 2001 at 16:23:20, leonid wrote:
>
>>Second is almost the same position but contain slight genetical modification. It
>>expect from you more brute force in order to reach the same result.
>>
>>[D]Qn1q1nQ1/1QNbNQ2/1qqkqq2/1QrqrQ2/1q1N1q2/3q4/3b4/Q2K2Q1 w - -
>
>Mate in 11 in half an hour, don't know the exact time, as the job ran in the
>background, the solution looks a bit like the unlocking of a safe ... nice :):
>
>29:57 WM11 09 Ne8+ Qxe8 Nc8+ Qexc8 Qgxf8+ Qfe7 Q7xe7+ Qxe7 Qaxb8+ Qbc7 Qgg6+ Re6
>Q8xc7+ Q8xc7 Qxc7+ Qxc7 Qaa6+ Bc6 Qgxe6+ Qxe6 Qxe6#

Chest says "No solution in 10 moves" after 2.7 hours (K7/600, 350MB hash).
The effective branching factor appears to be around 6, so I quit here.

Hey Paul, Pretz did it again!  :-))

Heiner



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