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Subject: Re: Mate in 14

Author: Steven J. Brann

Date: 18:30:15 12/19/02

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On December 19, 2002 at 17:34:16, Art Basham wrote:

>See how long it takes your program or favorite engine to announce mate!
>
>All checks, so should be easy...:-)
>
>[D]2R5/8/8/8/1B4K1/8/p1p1p1p1/6kb w - - 0 1


CM9000 finds mate in 14 in much less than a second.  1.9G P4, custom personality
with SS = 12 and 128MB hash.

Time	Depth	Score	Positions	Moves
0:00	1/3	-1.49	2506		1.Bc5+ Kf1 2.Rf8+ Ke1 3.Bb4+ Kd1
					4.Rd8+ Kc1 5.Bd2+ Kb2 6.Rb8+ Ka3
					7.Ra8+ Kb3
0:00	1/4	0.00	4125		1.Bc5+ Kf1 2.Rf8+ Ke1 3.Bb4+ Kd1
					4.Rd8+ Kc1 5.Ba3+ Kb1 6.Rb8+ Ka1
					7.Bb2+ Kb1 8.Ba3+
0:00	1/5	Mate14	10972		1.Bc5+ Kf1 2.Rf8+ Ke1 3.Bb4+ Kd1
					4.Rd8+ Kc1 5.Ba3+ Kb1 6.Rb8+ Ka1
					7.Bb2+ Kb1 8.Be5+ Kc1 9.Bf4+ Kd1
					10.Rd8+ Ke1 11.Bg3+ Kf1 12.Rf8+
					Kg1 13.Kh3 c1=Q 14.Bh2#
0:00	1/6	Mate14	24934		1.Bc5+ Kf1 2.Rf8+ Ke1 3.Bb4+ Kd1
					4.Rd8+ Kc1 5.Ba3+ Kb1 6.Rb8+ Ka1
					7.Bb2+ Kb1 8.Be5+ Kc1 9.Bf4+ Kd1
					10.Rd8+ Ke1 11.Bg3+ Kf1 12.Rf8+
					Kg1 13.Kh3 c1=Q 14.Bh2#
0:00	1/7	Mate14	60147		1.Bc5+ Kf1 2.Rf8+ Ke1 3.Bb4+ Kd1
					4.Rd8+ Kc1 5.Ba3+ Kb1 6.Rb8+ Ka1
					7.Bb2+ Kb1 8.Be5+ Kc1 9.Bf4+ Kd1
					10.Rd8+ Ke1 11.Bg3+ Kf1 12.Rf8+
					Kg1 13.Kh3 c1=Q 14.Bh2#
0:00	1/8	Mate14	101172		1.Bc5+ Kf1 2.Rf8+ Ke1 3.Bb4+ Kd1
					4.Rd8+ Kc1 5.Ba3+ Kb1 6.Rb8+ Ka1
					7.Bb2+ Kb1 8.Be5+ Kc1 9.Bf4+ Kd1
					10.Rd8+ Ke1 11.Bg3+ Kf1 12.Rf8+
					Kg1 13.Kh3 c1=Q 14.Bh2#
0:00	2/9	Mate14	196136		1.Bc5+ Kf1 2.Rf8+ Ke1 3.Bb4+ Kd1
					4.Rd8+ Kc1 5.Ba3+ Kb1 6.Rb8+ Ka1
					7.Bb2+ Kb1 8.Be5+ Kc1 9.Bf4+ Kd1
					10.Rd8+ Ke1 11.Bg3+ Kf1 12.Rf8+
					Kg1 13.Kh3 c1=Q 14.Bh2#
0:03	3/10	Mate14	806589		1.Bc5+ Kf1 2.Rf8+ Ke1 3.Bb4+ Kd1
					4.Rd8+ Kc1 5.Ba3+ Kb1 6.Rb8+ Ka1
					7.Bb2+ Kb1 8.Be5+ Kc1 9.Bf4+ Kd1
					10.Rd8+ Ke1 11.Bg3+ Kf1 12.Rf8+
					Kg1 13.Kh3 c1=Q 14.Bh2#
0:08	4/11	Mate14	2256686		1.Bc5+ Kf1 2.Rf8+ Ke1 3.Bb4+ Kd1
					4.Rd8+ Kc1 5.Ba3+ Kb1 6.Rb8+ Ka1
					7.Bb2+ Kb1 8.Be5+ Kc1 9.Bf4+ Kd1
					10.Rd8+ Ke1 11.Bg3+ Kf1 12.Rf8+
					Kg1 13.Kh3 c1=Q 14.Bh2#
0:19	5/12	Mate14	5080719		1.Bc5+ Kf1 2.Rf8+ Ke1 3.Bb4+ Kd1
					4.Rd8+ Kc1 5.Ba3+ Kb1 6.Rb8+ Ka1
					7.Bb2+ Kb1 8.Be5+ Kc1 9.Bf4+ Kd1
					10.Rd8+ Ke1 11.Bg3+ Kf1 12.Rf8+
					Kg1 13.Kh3 c1=Q 14.Bh2#

Steve



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