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Subject: Re: Mate in 13 found by hydra

Author: John Merlino

Date: 18:45:09 06/21/05

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On June 21, 2005 at 19:15:11, Vincent Lejeune wrote:

>[d]1r4k1/8/3p4/3P1p2/1P1Qbpn1/2B5/8/R3KN1q b - - 0 64
>Here, hydra announced Ne5 mate in 13
>
>And how many hours for other engines ?

How about ~0.075 of an hour to announce Mate in 13, and then about 3 times
longer to switch to Mate in 12? :-)

Here's what CM9_R1 says on an AMD 2500:

Time	Depth	Score	Positions	Moves
0:00	1/3	-4.26	2251		64...Ne5 65.Qa7 Nd3+ 66.Kd1 Qxf1+
					67.Kd2
0:00	1/4	-7.13	9569		64...Ne5 65.Qa7 Nd3+ 66.Kd1 Qxf1+
					67.Kc2 Qf2+ 68.Qxf2 Nxf2+ 69.Kd2
					Bxd5
0:00	1/5	-10.08	48080		64...Ne5 65.Qxe5 dxe5 66.Bxe5 Re8
					67.Bc7 Bd3+ 68.Kd2 Bxf1
0:00	1/6	-10.65	126851		64...Ne5 65.Qd1 Nf3+ 66.Qxf3 Bxf3
					67.Bd4 Rxb4 68.Ra8+ Kf7
0:01	1/7	-11.33	336007		64...Ne5 65.Qxe5 dxe5 66.Bxe5 Re8
					67.Ra6 Rxe5 68.Ra8+ Kf7 69.Ra7+ Kf6
0:02	1/8	-12.48	640994		64...Ne5 65.Qxe5 dxe5 66.Ra2 Bd3
					67.Rf2 Rc8 68.Bd2 Qe4+ 69.Kd1 Qxd5
0:06	1/9	-14.52	1754557		64...Ne5 65.Qxe5 dxe5 66.Ra2 Bd3
					67.Rf2 Rc8 68.Bd2 Qe4+ 69.Ne3 fxe3
0:14	1/10	-15.45	3936185		64...Ne5 65.Qxe5 dxe5 66.Ra2 Bd3
					67.Rf2 Rc8 68.Re2 Bxe2 69.Kxe2
					Qg2+ 70.Ke1 Rxc3
0:56	1/11	-18.44	16970521	64...Ne5 65.Qxe5 dxe5 66.Ra2 Rc8
					67.Rh2 Qf3 68.Bb2 Bd3 69.Rf2 Qe4+
					70.Kd1 Bxf1 71.Bc3 Rxc3
2:40	1/12	-25.70	53889661	64...Ne5 65.Qf2 Nd3+ 66.Kd2 Nxf2
					67.Bd4 Qg2 68.Ng3 Bxd5 69.Rd1 Nxd1+
					70.Ne2 f3 71.Bf2 fxe2 72.Bd4 Rxb4
4:35	2/13	-Mate13	100745211	64...Ne5 65.Qf2 Nd3+ 66.Kd2 Nxf2
					67.Bd4 Qg2 68.Ng3 Bd3 69.Ra2 Qxg3
					70.Bxf2 Qxf2+ 71.Kxd3 Qe3+ 72.Kc4
					Qe4+ 73.Kc3 Rc8+ 74.Kb3 Qd3+ 75.Kb2
					Qc3+ 76.Kb1 Qc1#
13:27	3/14	-Mate12	317397556	64...Ne5 65.Qd1 Nf3+ 66.Qxf3 Bxf3
					67.Ra7 Re8+ 68.Kd2 Qxf1 69.Kc2
					Bd1+ 70.Kc1 Ba4+ 71.Kb2 Qe2+ 72.Bd2
					Qxd2+ 73.Ka3 Qc2 74.Rg7+ Kxg7 75.b5
					Qb3#

jm



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