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Subject: Re: Cute position - difficult for null-movers

Author: John Merlino

Date: 21:45:06 06/14/02

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On June 14, 2002 at 21:02:30, J. Wesley Cleveland wrote:

>This is Chessboard magic #67
>
>White to move and win - with 5 man TBs you should be able to find the mate, if
>you can solve it at all. Don't take +2.2 as a solution.
>
>[D]4KBkr/7p/6PP/4P3/8/3P1p2/8/8 w - - 0 1

Chessmaster 9000, like most other programs, gives g7 a winning score in less
than one second:

Time	Depth	Score	Positions	Moves
0:00	4/5	-1.24	8548		1.Bc5 hxg6 2.Kd7 Rh7+ 3.Kd6 Rxh6
					4.d4
0:00	4/5	0.39	9840		1.g7 f2 2.Be7 f1=Q 3.Bf6 Qxf6 4.exf6
0:00	5/6	0.00	13925		1.g7 f2 2.Be7 f1=Q 3.Bf6 Qxf6 4.exf6
0:00	6/7	0.00	23666		1.g7 f2 2.Be7 f1=Q 3.Bf6 Qxf6 4.exf6
0:00	7/8	7.25	50767		1.g7 f2 2.Be7 f1=Q 3.Bf6 Qxf6 4.gxh8=Q+
					Qxh8 5.d4 Qg7 6.hxg7 Kxg7 7.Kd7 h5
0:01	8/9	7.39	108103		1.g7 f2 2.Be7 f1=Q 3.Bf6 Qxf6 4.gxh8=Q+
					Qxh8 5.d4 Qg7 6.hxg7 Kxg7 7.d5
					h5 8.d6
0:02	9/10	7.53	278158		1.g7 f2 2.Be7 f1=Q 3.Bf6 Qxf6 4.gxh8=Q+
					Qxh8 5.d4 Qg7 6.hxg7 Kxg7 7.d5
					h5 8.d6 h4
0:06	10/11	9.35	709823		1.g7 f2 2.Be7 f1=Q 3.Bf6 Qxf6 4.gxh8=Q+
					Qxh8 5.d4 Qg7 6.hxg7 Kxg7 7.e6
					Kg6 8.Kd7 Kf5 9.e7 Ke4 10.e8=Q+
					Kxd4
0:15	11/12	9.48	1938376		1.g7 f2 2.Be7 f1=Q 3.Bf6 Qxf6 4.gxh8=Q+
					Qxh8 5.d4 Qg7 6.hxg7 Kxg7 7.e6
					h5 8.e7 h4 9.Kd8 h3 10.e8=Q
0:46	12/13	10.31	5907119		1.g7 f2 2.Be7 f1=Q 3.Bf6 Qxf6 4.gxh8=Q+
					Qxh8 5.d4 Qg7 6.hxg7 Kxg7 7.e6
					h5 8.Kd7 h4 9.e7 Kh7 10.e8=Q Kh6
					11.Qe5
2:35	13/14	10.33	19934932	1.g7 f2 2.Be7 f1=Q 3.Bf6 Qxf6 4.gxh8=Q+
					Qxh8 5.d4 Qg7 6.hxg7 Kxg7 7.e6
					Kg6 8.Kd7 Kf5 9.e7 Ke4 10.e8=Q+
					Kxd4 11.Qh5 Ke4 12.Qxh7+ Kd5

jm



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