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Subject: Re: Neat Test Move

Author: John Merlino

Date: 10:09:22 12/04/02

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On December 04, 2002 at 10:03:45, Art Basham wrote:

>I found this neat chess position in Chess Life... back in May 1989.
>White won by playing Rxf7...!!
>
>[D]rr4k1/2p1Rp1n/p1Q4p/1p3P2/6PB/2P1p3/1q4P1/4R2K w - -
>
>It took Fidelity Excellence over 4 hours to find..
>Super Novag....2 hours, 20 min.
>Mach 3 ........50 min. (at 7 ply)
>WChess ......only 11 sec.
>
>This is probably an easy test for the programs today!

Chessmaster 9000, on a P3-733, finds the move in less than one second, and
announces Mate in 7 after 11 seconds:

Time	Depth	Score	Positions	Moves
0:00	1/3	0.58	2141		1.R7xe3 a5 2.Qxc7 Rc8
0:00	1/4	0.98	9503		1.R7xe3 Rc8 2.Qxh6 a5 3.Rd3
0:00	1/4	2.97	29010		1.Rxf7 Rb6 2.Qxc7 Nf8 3.Rxf8+ Rxf8
					4.Qxb6 Qxc3 5.Qxh6
0:01	1/5	6.86	49566		1.Rxf7 Rb6 2.Qxc7 Ng5 3.Bxg5 Rg6
					4.fxg6 hxg5 5.Rxe3
0:02	1/6	9.61	86052		1.Rxf7 Rb6 2.Qxc7 Qxc3 3.Qxc3 Kxf7
					4.Qc7+ Kg8 5.Qxb6
0:03	1/7	10.00	169739		1.Rxf7 Rb6 2.Qxc7 Ng5 3.Rg7+ Kh8
					4.Bxg5 Ra7 5.Rh7+ Kg8 6.Qxa7
0:11	1/8	Mate07	1108673		1.Rxf7 Rb6 2.Qd7 Ng5 3.Rg7+ Kh8
					4.Bxg5 Qxg2+ 5.Kxg2 hxg5 6.Rh7+
					Kg8 7.Qg7#
0:12	1/9	Mate07	1291325		1.Rxf7 Rb6 2.Qd7 Ng5 3.Rg7+ Kh8
					4.Bxg5 Qxg2+ 5.Kxg2 hxg5 6.Rh7+
					Kg8 7.Qg7#

jm



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