Author: Dieter Buerssner
Date: 00:01:22 10/14/04
Go up one level in this thread
On October 13, 2004 at 12:10:29, John Merlino wrote:
>On October 13, 2004 at 05:57:00, Yar wrote:
>>5rk1/2b1r2p/p1q1P1p1/1p1p4/3Bn1PQ/1PPBR2P/P5K1/4R3 w - - 0 40
>CMX_SKR announces Mate in 13 after 0:45 on a P4-2.4. On the next depth, at 1:48,
>it announces Mate in 11:
>
>Time Depth Score Positions Moves
>0:45 2/11 Mate13 12683627 40.Qxe7 Nf6 41.Bxf6 Rxf6 42.Qxf6
> Qe8 43.Rf3 Bd6 44.e7 Bc5 45.Qf8+
> Qxf8 46.Rxf8+ Kg7 47.e8=Q Bxf8
> 48.Rf1 Bd6 49.Rf7+ Kh6 50.Rxh7+
> Kxh7 51.Qxg6+ Kh8 52.Qh7#
>1:48 2/12 Mate11 31098246 40.Qxe7 Nf6 41.Bxf6 Rxf6 42.Qxf6
> Qe8 43.e7 Bd6 44.Qxd6 Kg7 45.Rf3
> h5 46.Qf6+ Kh7 47.Qf8 hxg4 48.Rf7+
> Qxf7 49.Qxf7+ Kh6 50.Qxg6#
Impressive as always. It is even at least a mate in 10 - perhaps something for
the Chest fans. After some backwards analysis with Yace I get:
6946 0.180 Mat10 13. 40.Qxe7 Nf6 41.Bxf6 d4+ 42.Rf3 Rxf6 43.Qxf6 Qd6
44.Re5 Bd8 45.Qf7+ Kh8 46.e7 Qxe7 47.Rxe7 Bxe7
48.Qxe7 Kg8 49.Rf8# {1851}
In the line of CM, 46. Rf8 instead of Qf6+:
5195 0.090 Mat04 13. 46.Rf8 hxg4 47.Rxe8 gxh3+ 48.Kxh3 Kh6 49.Qxg6#
(The Qf6 line has four checks, the Rf8 line only two - so no big surprise, when
engines find it faster.)
Regards,
Dieter
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