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Subject: Re: test position

Author: Dan Ellwein

Date: 22:22:54 07/20/05

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On July 20, 2005 at 16:22:00, John Merlino wrote:

>On July 19, 2005 at 18:54:48, Vincent Lejeune wrote:
>
>>[d]2rq2k1/3rnpp1/4p2n/p1p1P3/PpP5/5NQ1/1P1N1PK1/3R3R w - - 0 36
>>
>>How much time to find Rxh6! and how much time to get >+1 eval ?
>
>CM9_R1 on an AMD 2500 is faster than other engines to find the move (1 second!),
>but does not give a >+1 score in under 10 minutes because it is unable to find
>39.Rh4 (or Rh5):
>
>Time	Depth	Score	Positions	Moves
>0:00	1/5	-1.47	15723		36.b3 Nef5 37.Qf4 Rd3 38.Rde1
>0:00	1/5	-1.27	21056		36.Kf1 Nef5 37.Qf4 Nd4 38.Ne4 Nxf3
>					39.Rxd7 Qxd7 40.Qxf3 Qxa4
>0:00	1/6	-1.27	34136		36.Kf1 Nef5 37.Qf4 Nd4 38.Ne4 Nxf3
>					39.Rxd7 Qxd7 40.Qxf3 Qxa4
>0:00	1/7	-1.64	125451		36.Kf1 Ng6 37.Qh2 Rd3 38.Ke2 Qd7
>					39.Ne4 Rxd1 40.Rxd1 Qxa4
>0:01	1/8	-1.56	354657		36.Kf1 Ng6 37.b3 Rd3 38.Ke1 Qc7
>					39.Kf1 Qb7
>0:01	1/8	-0.99	483293		36.Rxh6 Nf5 37.Rdh1 Nxh6 38.Rxh6
>					Rxd2 39.Nxd2 Qxd2 40.Rh3 Re8 41.Qh4
>					Kf8 42.Rf3
>0:02	1/9	-0.65	736747		36.Rxh6 Nf5 37.Rdh1 Nxh6 38.Rxh6
>					Rxd2 39.Nxd2 Qxd2 40.Rh1 Re8 41.Qh4
>					Kf8 42.Qh8+ Ke7 43.Qxg7 Qxb2 44.Qf6+
>					Kd7 45.Qxf7+ Re7
>0:04	1/10	-0.36	1292897		36.Rxh6 Nf5 37.Rdh1 Nxh6 38.Rxh6
>					Rxd2 39.Nxd2 Qxd2 40.Rh3 Re8 41.Qh4
>					Kf8 42.Qh8+ Ke7 43.Qxg7 Qf4 44.Rf3
>0:08	1/11	-0.07	2847171		36.Rxh6 Nf5 37.Rdh1 Nxh6 38.Rxh6
>					Rxd2 39.Nxd2 Qxd2 40.Rh3 Re8 41.Qh4
>					Qh6 42.Qxh6 gxh6 43.Rxh6 Rd8 44.b3
>					Rd2 45.Kf3
>0:16	1/12	-0.13	5433953		36.Rxh6 Nf5 37.Rdh1 Nxh6 38.Rxh6
>					Rxd2 39.Nxd2 Qxd2 40.Rh5 g6 41.Rh1
>					Kg7 42.Qh4 Rg8 43.Qf6+ Kf8 44.Rh7
>					Qd7 45.Kg1
>0:42	1/13	0.08	14932431	36.Rxh6 Nf5 37.Rdh1 Nxh6 38.Rxh6
>					Rxd2 39.Nxd2 Qxd2 40.Rh5 g6 41.Rh3
>					Qd4 42.Rh4 Qd7 43.Qh2 Qb7+ 44.f3
>					Kf8 45.Rh8+ Ke7 46.Qh4+ Kd7 47.Rh7
>1:24	2/14	0.00	29376771	36.Rxh6 Nf5 37.Rdh1 Nxh6 38.Rxh6
>					Rxd2 39.Nxd2 Qxd2 40.Rh5 g6 41.Rh3
>					Qd4 42.Qh2 Qg4+ 43.Kh1 Qe4+ 44.Kg1
>					Qg4+ 45.Kh1
>4:51	3/15	0.22	103485762	36.Rxh6 Nf5 37.Rdh1 Nxh6 38.Rxh6
>					Rxd2 39.Nxd2 Qxd2 40.Rh5 g6 41.Rh3
>					Kg7 42.Qh4 Rg8 43.Qf6+ Kf8 44.Rh7
>					Qd7 45.Qf3 Qe8 46.b3 g5 47.Kf1
>
>jm

Hi John...

it takes CMX_OffSet 3 sec to see Rxh6 and over 1 hour to see Rh4...

P3/850

Time	Depth	Score	Positions	Moves
0:00	1/5	-0.18	32639		1.Kf1 Ng6 2.Kg1 Nf5 3.Qh3
0:00	1/6	-0.42	39246		1.Kf1 Ng6 2.Kg1 Rd3 3.Re1 Nf5
0:00	1/6	-0.36	48024		1.Qg5 Ng6 2.Qxd8+ Rcxd8 3.Rde1
					Rxd2 4.Nxd2 Rxd2 5.b3
0:01	1/7	-0.48	93016		1.Qg5 Ng6 2.Qg3 Nf5 3.Qh2 Rd3 4.Qh5
0:01	1/7	-0.40	108460		1.Rxh6 Nf5 2.Rdh1 Nxh6 3.Rxh6 Rxd2
					4.Nxd2 Qxd2 5.Rh1 Qxb2 6.Qd3
0:01	1/7	-0.31	132570		1.Kf1 Ng6 2.b3 Rd3 3.Ke1 Nf5 4.Qh3
0:03	1/8	-0.51	296351		1.Kf1 Ng6 2.Qh2 Qc7 3.Re1 Qc6 4.Ne4
					Qxa4
0:03	1/8	0.46	354945		1.Rxh6 Nf5 2.Rdh1 Nxh6 3.Rxh6 Rxd2
					4.Nxd2 Qxd2 5.Rh1 Qc2 6.Qh4 Qg6+
					7.Kf1
0:05	1/9	0.58	586410		1.Rxh6 Nf5 2.Rdh1 Nxh6 3.Rxh6 Rxd2
					4.Nxd2 Qxd2 5.Rh3 Qd4 6.Qh4 Qxh4
					7.Rxh4 Rd8 8.Kf3
0:09	1/10	0.41	1031048		1.Rxh6 Nf5 2.Rdh1 Nxh6 3.Rxh6 Rxd2
					4.Nxd2 Qxd2 5.Rh3 Qd4 6.Qh4 Qxh4
					7.Rxh4 Rd8 8.b3 Rd2
0:22	1/11	0.97	2588020		1.Rxh6 Nf5 2.Rdh1 Nxh6 3.Rxh6 Rxd2
					4.Nxd2 Qxd2 5.Rh3 Qd4 6.Rh4 Qd7
					7.Qh3 f5 8.Rh8+ Kf7 9.Qh5+ Ke7
					10.Qg5+ Kf7 11.Rxc8 Qxc8
0:49	1/12	1.14	5749307		1.Rxh6 Nf5 2.Rdh1 Nxh6 3.Rxh6 Rxd2
					4.Nxd2 Qxd2 5.Rh3 Qd4 6.Rh4 Qd7
					7.Qh3 Qc6+ 8.Kf1 Kf8 9.Rh8+ Ke7
					10.Rxc8 Qxc8 11.Qd3
1:55	1/13	1.24	13802799	1.Rxh6 Nf5 2.Rdh1 Nxh6 3.Rxh6 Rxd2
					4.Nxd2 Qxd2 5.Rh3 Qd4 6.Rh4 Qd7
					7.Qh3 Qc6+ 8.Kf1 Kf8 9.Rh8+ Ke7
					10.Qh7 Rxh8 11.Qxh8 g6 12.b3
4:36	2/14	1.41	33815974	1.Rxh6 Nf5 2.Rdh1 Nxh6 3.Rxh6 Rxd2
					4.Nxd2 Qxd2 5.Rh3 Re8 6.Qh4 Qh6
					7.Qxh6 gxh6 8.Rxh6 Rd8 9.b3 Rd2
					10.Rh3 Re2 11.Rg3+ Kf8
11:38	2/15	1.35	83996714	1.Rxh6 Nf5 2.Rdh1 Nxh6 3.Rxh6 Rxd2
					4.Nxd2 Qxd2 5.Rh3 Qc2 6.Qh4 Qg6+
					7.Kh2 Qh6 8.Qxh6 gxh6 9.Rxh6 Rd8
					10.b3 Rd2 11.Kg2 Kg7 12.Rh3
29:58	2/16	1.43	204408726	1.Rxh6 Nf5 2.Rdh1 Nxh6 3.Rxh6 Rxd2
					4.Nxd2 Qxd2 5.Rh5 g6 6.Rh3 Kg7
					7.Qh4 Rg8 8.Qf6+ Kf8 9.Rh7 Qd7
					10.Qf3 Qe8 11.b3 Rg7 12.Rxg7 Kxg7
1:24:27	3/17	1.50	597952145	1.Rxh6 Nf5 2.Rdh1 Nxh6 3.Rxh6 Rxd2
					4.Rh4 Rxb2 5.Qh3 Kf8 6.Rh8+ Ke7
					7.Rxd8 Rxd8 8.Qh7 g6 9.Ng5 Rf8
					10.Ne4 Ke8 11.Nxc5 Re2 12.Nb3 Rx
Dan



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