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

Author: John Merlino

Date: 11:07:13 04/19/02

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)?

Chessmaster says this, but I suspect that the eval is simply because of the
difference in material (not the steadily dropping score):

Time	Depth	Score	Positions	Moves
0:00	2/3	-2.25	978		1.Ra7 a1=Q 2.h7+ Kh8 3.Rxa1 Rxa1
0:00	3/4	-2.25	2266		1.Ra7 a1=Q 2.h7+ Kh8 3.Rxa1 Rxa1
0:00	4/5	-2.63	6103		1.Ra7 a1=Q 2.Rxa1 Rxa1 3.g4 Ra5+
					4.Kg6 Ra6+ 5.Kg5
0:00	4/5	-2.60	7857		1.Rg7+ Kh8 2.Ra7 a1=Q 3.Rxa1 Rxa1
					4.g4 Kh7
0:00	5/6	-2.60	16712		1.Rg7+ Kh8 2.Ra7 a1=Q 3.Rxa1 Rxa1
					4.g4 Kh7
0:00	6/7	-4.04	45865		1.Rg7+ Kh8 2.Ra7 a1=Q 3.Rxa1 Rxa1
					4.Kg6 Rg1 5.Kf5 Rxg2
0:01	7/8	-4.66	145818		1.Rg7+ Kh8 2.Ra7 a1=Q 3.Rxa1 Rxa1
					4.g4 Kh7 5.Kf4 Ra4+ 6.Kf5 Ra5+
					7.Kf6 Kxh6
0:02	7/8	-4.01	229288		1.h7+ Kxf7 2.h8=Q a1=Q 3.Qh5+ Kf8
					4.Qf3+ Ke7 5.Qe4+ Kd6 6.Qg6+ Kc5
					7.Qf5+ Kc4 8.g4
0:04	8/9	-4.02	414062		1.h7+ Kxf7 2.h8=Q a1=Q 3.Qh5+ Kf8
					4.Qf3+ Ke7 5.Qe4+ Kd6 6.Qg6+ Kc5
					7.Qf5+ Kd4 8.Qg4+ Kd5 9.Kh4
0:09	9/10	-3.93	898261		1.h7+ Kxf7 2.h8=Q a1=Q 3.Qh5+ Kf8
					4.Qf3+ Ke7 5.Qe4+ Kd6 6.Qg6+ Kc5
					7.Qf5+ Kd4 8.Qf6+ Kd3 9.Qg6+ Kc4
					10.g4
0:20	10/11	-3.76	2026714		1.h7+ Kxf7 2.h8=Q a1=Q 3.Qh5+ Kf8
					4.Qf3+ Ke7 5.Qe4+ Kd6 6.Qg6+ Kc5
					7.Qf5+ Kc6 8.Qe6+ Kc7 9.Qf7+ Kc8
					10.Qf8+ Kb7 11.Qf7+ Kb6
0:49	11/12	-3.63	4752637		1.h7+ Kxf7 2.h8=Q a1=Q 3.Qh5+ Kf8
					4.Qf3+ Ke7 5.Qe4+ Kd6 6.Qg6+ Kc5
					7.Qf5+ Kc6 8.Qe6+ Kc7 9.Qf7+ Kc8
					10.Qe6+ Kb7 11.Qd7+ Ka6 12.Qd5
1:39	12/13	-3.53	10149051	1.h7+ Kxf7 2.h8=Q a1=Q 3.Qh5+ Kf8
					4.Qf3+ Ke7 5.Qe4+ Kd6 6.Qg6+ Kc5
					7.Qf5+ Kc6 8.Qe6+ Kc7 9.Qf7+ Kc8
					10.Qf8+ Kb7 11.Qe7+ Kb8 12.Qd8+
					Ka7 13.Qc7+ Ka6
4:01	13/14	-3.42	25036829	1.h7+ Kxf7 2.h8=Q a1=Q 3.Qh5+ Kf8
					4.Qf3+ Ke7 5.Qe4+ Kd6 6.Qg6+ Kc5
					7.Qf5+ Kc6 8.Qe6+ Kc7 9.Qf7+ Kb6
					10.Qe6+ Kb5 11.Qd5+ Kb4 12.Qe4+
					Kc3 13.Qe5+ Kc2 14.Qd5
7:53	14/15	-3.35	50033731	1.h7+ Kxf7 2.h8=Q a1=Q 3.Qh5+ Kf8
					4.Qf3+ Ke7 5.Qe4+ Kd6 6.Qg6+ Kc5
					7.Qf5+ Kc6 8.Qe6+ Kc7 9.Qf7+ Kc8
					10.Qf8+ Kb7 11.Qf7+ Kb6 12.Qg6+
					Kb5 13.Qd3+ Kc6 14.Qg6+ Kd5 15.Kf4

jm

Re: Test Position (for computers or strong players) -- Can White Draw? Tony Werten 23:47:21 04/19/02
Re: Test Position (for computers or strong players) -- Can White Draw? Jonas Cohonas 15:55:06 04/19/02
Re: Test Position (for computers or strong players) -- Can White Draw? Frank Schneider 12:40:17 04/19/02
- Re: Test Position (for computers or strong players) -- Can White Draw? Roy Eassa 14:14:47 04/19/02
  - Re: Test Position (for computers or strong players) -- Can White Draw? Frank Schneider 06:28:55 04/20/02
Re: Test Position (for computers or strong players) -- Can White Draw? Terry McCracken 12:39:39 04/19/02
- Re: Test Position (for computers or strong players) -- Can White Draw? John Merlino 13:08:23 04/19/02
  - Re: Test Position (for computers or strong players) -- Can White Draw? Terry McCracken 14:20:27 04/19/02
    - Re: Test Position (for computers or strong players) -- Can White Draw? Terry McCracken 14:25:12 04/19/02
      - Re: Test Position (for computers or strong players) -- Can White Draw? Roy Eassa 15:40:24 04/19/02
Re: Test Position (for computers or strong players) -- Can White Draw? Dan Andersson 12:10:06 04/19/02
Re: Test Position (for computers or strong players) -- Can White Draw? Dieter Buerssner 12:03:33 04/19/02
Re: Test Position (for computers or strong players) -- Can White Draw? Steve Maughan 11:24:38 04/19/02

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