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Subject: Re: How many programs can evaluate White as winning !

Author: John Merlino

Date: 12:05:01 05/10/04

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On May 09, 2004 at 09:00:16, Jorge Pichard wrote:

>Here is a very silly position, constructed by Mr. Matsukevich for the purpose of
>illustra the tactical themes of "The Windmill".  Watch how all of Black's pieces
>drop off!
>
>[D]5n1k/1bnbnbR1/6bn/6n1/6b1/2B3n1/1K4b1/r7 w - - 0 1

CM_SKR on an AMD 2500+ sees White as winning in less than one second:

Time	Depth	Score	Positions	Moves
0:00	1/3	0.00	2092		1.Rxg6+ Kh7 2.Rg7+ Kh8 3.Rxg5+
					Kh7 4.Rg7+ Kh8 5.Rg6+ Kh7 6.Rg7+
0:00	1/4	0.00	7071		1.Rxg6+ Kh7 2.Rg7+ Kh8 3.Rxg5+
					Kh7 4.Rg7+ Kh8 5.Rg6+ Kh7 6.Rg7+
0:00	1/5	2.60	25784		1.Rxg6+ Kh7 2.Rg7+ Kh8 3.Rxg5+
					Kh7 4.Rg7+ Kh8 5.Rxf7+ Kg8 6.Rg7+
					Kh8 7.Rxe7+ Kg8 8.Rg7+ Kh8 9.Rxd7+
					Kg8 10.Rg7+ Kh8 11.Rxc7+ Kg8 12.Rg7+
					Kh8 13.Rxb7+ Kg8 14.Rg7+ Kh8 15.Rxg4+
					Kh7 16.Rg7+
0:00	1/6	2.57	72721		1.Rxg6+ Kh7 2.Rg7+ Kh8 3.Rxg5+
					Kh7 4.Rg7+ Kh8 5.Rxf7+ Kg8 6.Rg7+
					Kh8 7.Rxe7+ Kg8 8.Rg7+ Kh8 9.Rxd7+
					Kg8 10.Rg7+ Kh8 11.Rxc7+ Kg8 12.Rg7+
					Kh8 13.Rxb7+ Kg8 14.Rg7+ Kh8 15.Rxg4+
					Kh7 16.Rg7+
0:00	1/7	5.44	145807		1.Rxg6+ Kh7 2.Rg7+ Kh8 3.Rxg5+
					Kh7 4.Rg7+ Kh8 5.Rxf7+ Kg8 6.Rg7+
					Kh8 7.Rxe7+ Kg8 8.Rg7+ Kh8 9.Rxd7+
					Kg8 10.Rg7+ Kh8 11.Rxc7+ Kg8 12.Rg7+
					Kh8 13.Rxb7+ Kg8 14.Rg7+ Kh8 15.Rxg4+
					Kh7 16.Rg7+
0:00	1/8	5.44	334045		1.Rxg6+ Kh7 2.Rg7+ Kh8 3.Rxg5+
					Kh7 4.Rg7+ Kh8 5.Rxf7+ Kg8 6.Rg7+
					Kh8 7.Rxe7+ Kg8 8.Rg7+ Kh8 9.Rxd7+
					Kg8 10.Rg7+ Kh8 11.Rxc7+ Kg8 12.Rg7+
					Kh8 13.Rxb7+ Kg8 14.Rg7+ Kh8 15.Rxg4+
					Kh7 16.Rg7+
0:01	1/9	5.32	776860		1.Rxg6+ Kh7 2.Rg7+ Kh8 3.Rxg5+
					Kh7 4.Rg7+ Kh8 5.Rxf7+ Kg8 6.Rg7+
					Kh8 7.Rxe7+ Kg8 8.Rg7+ Kh8 9.Rxd7+
					Kg8 10.Rg7+ Kh8 11.Rxc7+ Kg8 12.Rg7+
					Kh8 13.Rxb7+ Kg8 14.Rg7+ Kh8 15.Rxg4+
					Kh7 16.Rg7+
0:02	1/10	5.55	1299308		1.Rxg6+ Kh7 2.Rg7+ Kh8 3.Rxg5+
					Kh7 4.Rg7+ Kh8 5.Rxf7+ Kg8 6.Rg7+
					Kh8 7.Rxe7+ Kg8 8.Rg7+ Kh8 9.Rxd7+
					Kg8 10.Rg7+ Kh8 11.Rxc7+ Kg8 12.Rg7+
					Kh8 13.Rxb7+ Kg8 14.Rg7+ Kh8 15.Rxg4+
					Kh7 16.Rg7+
0:03	1/11	5.55	1988467		1.Rxg6+ Kh7 2.Rg7+ Kh8 3.Rxg5+
					Kh7 4.Rg7+ Kh8 5.Rxf7+ Kg8 6.Rg7+
					Kh8 7.Rxe7+ Kg8 8.Rg7+ Kh8 9.Rxd7+
					Kg8 10.Rg7+ Kh8 11.Rxc7+ Kg8 12.Rg7+
					Kh8 13.Rxb7+ Kg8 14.Rg7+ Kh8 15.Rxg4+
					Kh7 16.Rg7+
0:07	1/12	5.56	4209255		1.Rxg6+ Kh7 2.Rg7+ Kh8 3.Rxg5+
					Kh7 4.Rg7+ Kh8 5.Rxf7+ Kg8 6.Rg7+
					Kh8 7.Rxe7+ Kg8 8.Rg7+ Kh8 9.Rxd7+
					Kg8 10.Rg7+ Kh8 11.Rxc7+ Kg8 12.Rg7+
					Kh8 13.Rxb7+ Kg8 14.Rg7+ Kh8 15.Rxg4+
					Kh7 16.Rg7+
0:13	2/13	5.56	7361834		1.Rxg6+ Kh7 2.Rg7+ Kh8 3.Rxg5+
					Kh7 4.Rg7+ Kh8 5.Rxf7+ Kg8 6.Rg7+
					Kh8 7.Rxe7+ Kg8 8.Rg7+ Kh8 9.Rxd7+
					Kg8 10.Rg7+ Kh8 11.Rxc7+ Kg8 12.Rg7+
					Kh8 13.Rxb7+ Kg8 14.Rg7+ Kh8 15.Rxg4+
					Kh7 16.Rg7+
0:27	3/14	5.56	15152094	1.Rxg6+ Kh7 2.Rg7+ Kh8 3.Rxg5+
					Kh7 4.Rg7+ Kh8 5.Rxf7+ Kg8 6.Rg7+
					Kh8 7.Rxe7+ Kg8 8.Rg7+ Kh8 9.Rxd7+
					Kg8 10.Rg7+ Kh8 11.Rxc7+ Kg8 12.Rg7+
					Kh8 13.Rxb7+ Kg8 14.Rg7+ Kh8 15.Rxg4+
					Kh7 16.Rg7+
1:06	4/15	5.56	36740261	1.Rxg6+ Kh7 2.Rg7+ Kh8 3.Rxg5+
					Kh7 4.Rg7+ Kh8 5.Rxf7+ Kg8 6.Rg7+
					Kh8 7.Rxe7+ Kg8 8.Rg7+ Kh8 9.Rxd7+
					Kg8 10.Rg7+ Kh8 11.Rxc7+ Kg8 12.Rg7+
					Kh8 13.Rxb7+ Kg8 14.Rg7+ Kh8 15.Rxg4+
					Kh7 16.Rg7+
2:42	5/16	5.56	92100255	1.Rxg6+ Kh7 2.Rg7+ Kh8 3.Rxg5+
					Kh7 4.Rg7+ Kh8 5.Rxf7+ Kg8 6.Rg7+
					Kh8 7.Rxe7+ Kg8 8.Rg7+ Kh8 9.Rxd7+
					Kg8 10.Rg7+ Kh8 11.Rxc7+ Kg8 12.Rg7+
					Kh8 13.Rxb7+ Kg8 14.Rg7+ Kh8 15.Rxg4+
					Kh7 16.Rg7+

jm



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