Author: Heiner Marxen
Date: 05:52:02 08/05/02
Go up one level in this thread
On August 02, 2002 at 18:42:18, Dieter Buerssner wrote:
>On August 02, 2002 at 18:24:15, Georg v. Zimmermann wrote:
>
>>Diep and I agree that its a mate in 12 it seems :). Wonderfull position ! Thanks
>>for sharing.
>
>Georg, I think Eduard's mate in 11 is correct (in the sense, that it is at least
>a mate in 11). If I analyze Eduard's line from back to front, I get mate in 11
>at the root rather fast. Also, I cannot find an improvement over the line. After
>2 or 3 moves, Yace reached the search depth, that should enable it to find a
>shorter mate, if one was possible. For the root position, I did not wait long
>enough.
According to Chest this is a mate in 11, and Rh3 is the only key move.
(Athlon 1500+, 350 MB hash, 20.4 hours):
PV: Rh3 Qxf6 Qxf6 exd5 Rg3 d4 h4 d3 cxd3 c4 h5 h6 Qxh6+ Rh7 Qf6+ Rhg7 Rxg7 Rxg7
h6 cxd3 Qxg7#
Rh3 Qxf6 Qxf6 exd5 Rg3 ...+8
a5 d6 ...+5
a6 d6 ...+5
b5 d6 ...+5
c4 d6 ...+5
e5 d6 ...+5
Rd8 Qxd8+ ...+3
h5 Rxh5#
h6 Rxh6#
-*- Rg3 ...+5
h5 Qxh5+ Rh7 Qxh7#
h6 Qxh6+ Rh7 Qxh7#
Rg3 Qxh7#
Rg4 Qxh7#
Rg5 Qxh7#
Rg6 Qxh7#
Rxg2 Qxh7#
-*- Qxh7+ Rxh7 Rxh7#
>Where is Heiner?
My PC at home is out of order, so I don't read CCC during week end,
currently. As you see, I did not miss the challange ;-)
>Regards,
>Dieter
Cheers,
Heiner
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