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Subject: Re: Try this mate.

Author: Heiner Marxen

Date: 10:53:01 10/26/01

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On October 26, 2001 at 12:54:50, Dieter Buerssner wrote:

>On October 26, 2001 at 02:07:30, Angrim wrote:
>
>>Now how about trying to prove the mate for that position that so
>>many people were searching to find the best move?
>
>>[D]3r1rk1/2n1nppp/1pp1p3/p2qP2Q/P1RPN3/2R5/1P2NPPP/6K1 w - -
>
>Yace on a slow computer and probably running in the background (I have found
>this in the log files again - I cannot remember it);
>
>1620560609 2:12:40  Mat14 16t  1. Nf6+ gxf6 2. Rg3+ Kh8 3. Qh6 Ng6 4. Rh3
>                               Qxg2+ 5. Kxg2 Nh4+ 6. Rxh4 Rg8+ 7. Kh1 Rg7 8.
>                               exf6 Rdg8 9. Rc3 Ne8 10. Rch3 Rg1+ 11. Nxg1
>                               Rxg1+ 12. Kxg1 Kg8 13. Rg3+ Kh8 14. Qxh7# {1741}
>
>Regards,
>Dieter

That can be shortened by one move.  After 9...Ne8 Chest finds a mate in 4:

 Rg3 Nxf6 Qxf6  b5   Rxh7+  Kxh7 Rh3#
                c5   Rxh7+  Kxh7 Rh3#
                e5   Rxh7+  Kxh7 Rh3#
                h5   Rxh5#
                h6   Rxh6#
                -*-  Qxg7#
     Nc7  fxg7+ Rxg7 Qxg7#
     Nd6  fxg7+ Rxg7 Qxg7#
     Rf8  fxg7+ Kg8  gxf8Q#
                Nxg7 Qxh7#
     Rg4  Qxh7#
     Rg5  Qxh7#
     Rg6  Qxh7#
     Rxg3 Qxh7#
     -*-  Rxg7  Nxf6 Rxh7+  Nxh7 Qxh7#
                Rxg7 fxg7+  =*=  Qxh7#
                Nxg7 Qxh7#
                Rf8  Qxh7#
                -*-  Rxh7#

Still, the original position is too deep for Chest.

Cheers,
Heiner



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