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Subject: Re: Who can see it?

Author: John Merlino

Date: 17:44:48 10/04/03

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On October 04, 2003 at 20:17:49, Slater Wold wrote:

>Who can see this position is lost?
>
>[D]8/6NK/8/1Bk5/P5q1/8/8/8 w - - 0 107

Chessmaster 9000, on a P4-2.4, without tablebases, needs 2:13 to see that Black
can win the pawn (the PV at 2:13 shows Black winning it after 26 plies, and the
PV at 7:06 has Black winning the pawn after 18 plies).

Time	Depth	Score	Positions	Moves
0:00	1/5	-2.03	11719		107.Kg8 Kb6 108.Kf7 Qf4+ 109.Ke7
					Qg5+ 110.Kf7 Qe5
0:00	2/6	-2.03	32898		107.Kg8 Qf3 108.Ne6+ Kd6 109.Nf8
					Qe4 110.Kg7
0:00	3/7	-2.08	88608		107.Kg8 Qg6 108.Kf8 Kb6 109.Bd7
					Qf6+ 110.Kg8 Qd8+ 111.Be8 Qe7
0:00	4/8	-2.05	165029		107.Kg8 Qg6 108.Kf8 Kb6 109.Kg8
					Qe4 110.Kf7 Qb7+ 111.Kf6 Qd5
0:01	5/9	-2.05	406086		107.Kg8 Qg6 108.Kf8 Kb6 109.Kg8
					Qf6 110.Kh7 Qf7 111.Bd3 Qd5
0:03	6/10	-2.11	911618		107.Kg8 Kd6 108.Kf7 Ke5 109.Kf8
					Qf3+ 110.Kg8 Qb7 111.Nh5 Qb6 112.Bc4
					Qa7
0:07	7/11	-2.05	2240932		107.Kg8 Qg6 108.Bd7 Qf6 109.Be8
					Qe7 110.Bb5 Kb6 111.Be8 Ka5 112.Bb5
					Qe4
0:11	8/12	-2.04	3726500		107.Kg8 Qg6 108.Kf8 Qf6+ 109.Kg8
					Kb6 110.Be8 Ka5 111.Kh7 Qg5 112.Kg8
					Qd5+ 113.Bf7 Qa8+ 114.Be8 Qe4
0:18	9/13	-2.04	6025911		107.Kg8 Qg6 108.Kf8 Qf6+ 109.Kg8
					Kb6 110.Be8 Qe7 111.Bf7 Qd8+ 112.Be8
					Qd5+ 113.Kf8 Kc5 114.Ke7 Qd6+ 115.Kf7
					Kd5
0:42	10/14	-2.03	14268928	107.Kg8 Qg6 108.Kf8 Qf6+ 109.Kg8
					Kb6 110.Be8 Ka5 111.Bd7 Qd6 112.Be8
					Qe5 113.Bc6 Kb6 114.Bf3
1:10	11/15	-2.14	23808657	107.Kg8 Qg6 108.Kf8 Qf6+ 109.Kg8
					Kd4 110.Kh7 Ke5 111.Kg8 Qf4 112.Be8
					Qg4 113.Kf7 Qc4+ 114.Kg6 Qd3+ 115.Kf7
					Qf3+ 116.Kg6
2:13	12/16	-2.81	44712307	107.Kg8 Kd6 108.Kf7 Qf4+ 109.Kg6
					Ke5 110.Ne8 Qf5+ 111.Kh6 Qg4 112.Ng7
					Kf6 113.Ne8+ Ke7 114.Ng7 Kf7 115.Be8+
					Kf8 116.Nh5 Qe6+ 117.Bg6 Qe3+ 118.Kh7
					Qa7+ 119.Kh6 Qxa4
7:06	13/17	-3.05	141422764	107.Kg8 Qg6 108.Kf8 Qf6+ 109.Kg8
					Kd5 110.Kh7 Ke5 111.Kg8 Qf3 112.Be8
					Kf6 113.Nh5+ Ke7 114.Bg6 Qb3+ 115.Kg7
					Qxa4 116.Ng3 Qd4+ 117.Kg8

jm



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