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Subject: Re: Test Position (for computers or strong players) -- Can White Draw?

Author: Steve Maughan

Date: 11:24:38 04/19/02

Go up one level in this thread

On April 19, 2002 at 14:07:13, John Merlino wrote:

>This position came up in a game between myself and a friend:
>
>[D]6k1/5R2/7P/6K1/8/8/p5P1/6r1 w - - 0 1
>
>The question is: can White draw (after 1.h7+ Kxf7 2.h8=Q a1=Q)?

Monarch thinks it's a draw after 1 sec on my 1.5 GHz P4.

  2.01	 0:00 	-4.85 	1.Rf1 Rxf1 (24) 0.0
  2.08	 0:00 	-4.70++	1.Ra7 (181) 18.1
  2.08	 0:00 	-3.55 	1.Ra7 a1Q (213) 21.3
  2.15	 0:00 	-2.95++	1.h7+ (399) 19.9
  2.15	 0:00 	-2.95 	1.h7+ Kxf7 (425) 21.2
  3.01	 0:00 	-4.60--	1.h7+ (534) 17.8
  3.01	 0:00 	-4.75 	1.h7+ Kxf7 2.h8Q (695) 17.3
  3.02	 0:00 	-4.40++	1.Rg7+ (784) 19.6
  3.02	 0:00 	-3.55 	1.Rg7+ Kh8 2.Ra7 a1Q (953) 19.0
  3.04	 0:00 	-3.45++	1.Ra7 (1.132) 22.6
  3.04	 0:00 	-3.45 	1.Ra7 a1Q 2.h7+ (1.284) 21.4
  4.01	 0:00 	-3.45 	1.Ra7 a1Q 2.h7+ Kh8 3.Rxa1 (2.043) 29.1
  5.01	 0:00 	-3.40 	1.Ra7 a1Q 2.Rxa1 Rxa1 (6.124) 68.0
  6.01	 0:00 	-3.45 	1.Ra7 a1Q 2.h7+ Kh8 (12.069) 100.5
  6.02	 0:00 	-3.40++	1.Rg7+ (13.389) 102.9
  6.02	 0:00 	-3.40 	1.Rg7+ Kh8 (16.050) 114.6
  7.01	 0:00 	-3.50 	1.Rg7+ Kh8 2.Ra7 a1R 3.Rxa1 Rxa1 4.Kf4 Ra2 (31.901) 177.2
  8.01	 0:00 	-3.42 	1.Rg7+ Kh8 2.Ra7 a1R 3.Rxa1 Rxa1 4.Kf4 Ra2 5.g3 (68.278)
273.1
  9.01	 0:00 	-3.92--	1.Rg7+ (156.403) 390.0
  9.01	 0:00 	-4.30 	1.Rg7+ Kh8 2.Ra7 a1Q 3.Rxa1 Rxa1 4.Kg6 Ra6+ 5.Kf5 Rxh6
6.Ke4 (274.498) 480.7
 10.01	 0:00 	-4.40 	1.Rg7+ Kh8 2.Ra7 a1Q 3.Rxa1 Rxa1 4.Kg6 Ra6+ 5.Kg5 Kh7 6.Kf4
Rxh6 (445.819) 530.1
 10.02	 0:01 	-2.51++	1.h7+ (726.339) 557.8
 10.02	 0:01 	 0.00 	1.h7+ Kxf7 2.h8Q a1R 3.Qh5+ Kg7 4.Qh6+ Kf7 5.Qh7+ Ke8
6.Qg6+ Kd8 7.Qg8+ Kc7 8.Qf7+ Kb6 9.Qg6+ Ka5 (968.993) 572.3
 11.01	 0:02 	 0.00 	1.h7+ Kxf7 2.h8Q a1R 3.Qh5+ Kg7 4.Qh6+ Kf7 5.Qh7+
(1.235.344) 587.4
 12.01	 0:02 	 0.00 	1.h7+ Kxf7 2.h8Q a1R 3.Qh5+ Kg7 4.Qh6+ Kf7 5.Qh7+
(1.799.542) 611.2
 13.01	 0:04 	 0.00 	1.h7+ Kxf7 2.h8Q a1R 3.Qh5+ Kg7 4.Qh6+ Kf7 5.Qh7+
(3.168.116) 643.0
 14.01	 0:09 	 0.00 	1.h7+ Kxf7 2.h8Q a1R 3.Qh5+ Kg7 4.Qh6+ Kf7 5.Qh7+
(6.025.466) 667.0
 15.01	 0:18 	 0.00 	1.h7+ Kxf7 2.h8Q a1R 3.Qh5+ Kg7 4.Qh6+ Kf7 5.Qh7+
(12.912.822) 681.1
 16.01	 0:32 	 0.00 	1.h7+ Kxf7 2.h8Q a1R 3.Qh5+ Kg7 4.Qh6+ Kf7 5.Qh7+
(21.518.717) 670.4
best move: h6-h7 time: 0:32.106 min  n/s: 670.448  nodes: 21.518.717
QRatio : 6.1% FHRatio : 90.1%

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