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Subject: Re: Heavy mate position but easy to solve.

Author: Steven J. Brann

Date: 18:29:28 10/20/03

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On October 20, 2003 at 09:09:19, leonid wrote:

>Hi,
>
>The next position is very easy to solve but it contain pretty heavy pieces. It
>cold be good for checking program for robustness.
>
>[D] 2r1N2B/PP1RqP1Q/K2nnq1R/Npk3q1/3q1qQr/2qbbQ2/1P1Q3q/1q1B1Q2 w - -
>
>Please indicate Your result.
>
>Leonid.

CM9K on a 3.0G P4 (default personlity with SS=12 and 128MB hash) finds a Mate in
10 in one second and doesn't seem to be able to improve on it.

Time	Depth	Score	Positions	Moves
0:01	1/3	Mate10	171669		1.Qxc3+ Qxc3 2.bxc8=Q+ Nxc8 3.Qc6+
					Kb4 4.Qxc3+ Qxc3 5.Bxc3+ Kc5 6.Nb3+
					Kc6 7.Rxe6+ Qed6 8.Rexd6+ Nxd6
					9.Rxd6+ Qxd6 10.a8=Q#
0:04	1/4	Mate10	592197		1.Qxc3+ Qxc3 2.bxc8=Q+ Nxc8 3.Qc6+
					Kb4 4.Qxc3+ Qxc3 5.Bxc3+ Kc5 6.Nb3+
					Kc6 7.Rxe6+ Qed6 8.Rexd6+ Nxd6
					9.Rxd6+ Qxd6 10.a8=Q#
0:17	1/5	Mate10	2530379		1.Qxc3+ Qxc3 2.bxc8=Q+ Nxc8 3.Qc6+
					Kb4 4.Qxc3+ Qxc3 5.Bxc3+ Kc5 6.Nb3+
					Kc6 7.Rxe6+ Qed6 8.Rexd6+ Nxd6
					9.Rxd6+ Qxd6 10.a8=Q#
1:16	1/6	Mate10	11423726	1.Qxc3+ Qxc3 2.bxc8=Q+ Nxc8 3.Qc6+
					Kb4 4.Qxc3+ Qxc3 5.Bxc3+ Kc5 6.Nb3+
					Kc6 7.Rxe6+ Qed6 8.Rexd6+ Nxd6
					9.Rxd6+ Qxd6 10.a8=Q#
4:27	1/7	Mate10	40341857	1.Qxc3+ Qxc3 2.bxc8=Q+ Nxc8 3.Qc6+
					Kb4 4.Qxc3+ Qxc3 5.Bxc3+ Kc5 6.Nb3+
					Kc6 7.Rxe6+ Qed6 8.Rexd6+ Nxd6
					9.Rxd6+ Qxd6 10.a8=Q#

Steve



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