Computer Chess Club Archives




Subject: Re: Mate to solve in two flavours.

Author: Heiner Marxen

Date: 07:56:31 05/08/01

Go up one level in this thread

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

>On May 07, 2001 at 16:23:20, leonid wrote:
>>And how about solving mate in two variations? We will start with female side.
>>Contain more esthetic and demand very gentle approach.
>>[D]Qn1q1nQ1/1QNbNQ2/1qqkqq2/1QrqrQ2/1q1N1q2/3q4/B1RbR1B1/B2K2B1 w - -
>Mate in 8 in half a minute ...
>00:27 WM8 06 Ne8+ Qxe8 Nc8+ Qexc8 Qgxf8+ Qfe7 Q7xe6+ Rxe6 Rxe6+ Qxe6 Qxe6+ Bxe6
>Qbxe7+ Ke5 Nxc6#

Chest find two solutions (in 8 moves (!), i.e. Pretz is shortest, again :-)

Nc8+ Qxc8 Ne8+ Qcxe8 Qaxb8+ Qbc7  Q7xc6+ Qxc6  Qxc6+  Rxc6  Rxc6+  Bxc6 Nb5+
=*=  Qfxc7#

Ne8+ Qxe8 Nc8+ Qcxc8 Qgxf8+ Qfe7  Q7xe7+ Q6xe7 Qaxb8+ Qbc7  Qxd5+  =*=  Qxd5+
Rxd5 Qxd5#

(K7/600, 350 MB hash, 517 seconds = 8.6 minutes)

The second one is not yet ready.


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