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Subject: Re: Position -- REVELATION!

Author: Dann Corbit

Date: 11:53:22 06/18/02

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On June 18, 2002 at 14:16:13, John Merlino wrote:

>On June 18, 2002 at 12:30:13, Charlie GOLD wrote:
>
>>    Here is a position that I gave to Fritz 6. After 7 minutes on infinite it
>>only comes up with Rxf4. I believe that Rxh5 leads to a win.
>>    [D] 4r1k1/qp1r1p2/2pb1Bp1/p6p/2PP1n1R/1P3P2/P4P2/2Q2K1R w 0 1
>
>Guess what, folks. Qxf4 is the best move!!! Chessmaster 9000 announces Mate in
>10 for Qxf4 in 25 seconds on a PIII-600:
>
>Time	Depth	Score	Positions	Moves
>0:00	1/3	-1.80	2438		1.Rxf4 Bxf4 2.Qxf4 Re6 3.Be5 b6
>0:00	1/4	-1.26	7609		1.Rxf4 Bxf4 2.Qxf4 Re6 3.Be5 Kh7
>					4.Qg5
>0:00	2/5	-1.26	24204		1.Rxf4 Bxf4 2.Qxf4 Re6 3.Be5 Kh7
>					4.Qg5
>0:02	2/6	-1.43	113961		1.Rxf4 Re6 2.Rf5 Rxf6 3.Rxf6 Qxd4
>					4.Qg5 Be5
>0:02	2/6	1.34	148059		1.Rxh5 gxh5 2.Qxf4 Re1+ 3.Kxe1
>					Re7+ 4.Be5 Bxe5 5.Qg5+ Kf8 6.dxe5
>0:03	3/7	2.28	229134		1.Rxh5 gxh5 2.Qxf4 Re1+ 3.Kxe1
>					Re7+ 4.Be5 Bxe5 5.dxe5 Rd7 6.Qg5+
>					Kf8 7.Rxh5
>0:11	3/8	9.09	789648		1.Rxh5 gxh5 2.Qxf4 Re1+ 3.Kxe1
>					Re7+ 4.Kf1 Re1+ 5.Kxe1 Bb4+ 6.Kf1
>					Kf8 7.Rxh5
>0:15	3/8	13.43	1118477		1.Qxf4 Re1+ 2.Kxe1 Bxf4 3.Rxh5
>					Re7+ 4.Kf1 Re1+ 5.Kxe1 Bd2+ 6.Kxd2
>					gxh5 7.Rxh5 Qxd4+ 8.Bxd4 Kf8 9.Rxa5
>					Ke7
>0:25	4/9	Mate10	2173987		1.Qxf4 Re1+ 2.Kg2 Rg1+ 3.Kxg1 Qc5
>					4.Rxh5 gxh5 5.Qh6 Qg5+ 6.Qxg5+
>					Kf8 7.Qg8+ Kxg8 8.Rxh5 Bh2+ 9.Rxh2
>					Kf8 10.Rh8#
>0:31	4/10	Mate10	2759618		1.Qxf4 Re1+ 2.Kg2 Rg1+ 3.Kxg1 Qc5
>					4.Rxh5 gxh5 5.Qh6 Qg5+ 6.Qxg5+
>					Kf8 7.Qg8+ Kxg8 8.Rxh5 Bh2+ 9.Rxh2
>					Kf8 10.Rh8#
>0:45	5/11	Mate10	4504935		1.Qxf4 Re1+ 2.Kg2 Rg1+ 3.Kxg1 Qc5
>					4.Rxh5 gxh5 5.Qh6 Qg5+ 6.Qxg5+
>					Kf8 7.Qg8+ Kxg8 8.Rxh5 Bh2+ 9.Rxh2
>					Kf8 10.Rh8#
[snip]

Verified as the best move by Chest:
4r1k1/qp1r1p2/2pb1Bp1/p6p/2PP1n1R/1P3P2/P4P2/2Q2K1R w - - acn 175975510; acs
1404; bm Qxf4; ce 32748; dm 10; pv Qxf4 Re1+ Kxe1 Bb4+ Kf1 Rxd4 Bxd4 f5 Rxh5
gxh5 Rg1+ Kf8 Qxf5+ Ke8 Qc8+ Ke7 Rg7+ Kd6 Qd7#;



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