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Subject: Re: Can your engine find Re8+! or does it prefer Qxc5?

Author: John Merlino

Date: 08:51:48 07/22/05

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On July 22, 2005 at 10:46:56, Jack Lad wrote:

>[d] 7k/4R1b1/6qp/2p1Q3/2Pp4/3P3P/5PPK/8 w

Both moves win, and CM9_R1 on a P4-2.4 prefers Qxc5:

Time	Depth	Score	Positions	Moves
0:00	1/4	7.89	9165		1.Re8+ Kh7 2.Qe6 h5 3.Qxg6+ Kxg6
					4.Kg3 Kf7 5.Rc8
0:00	1/5	8.08	13319		1.Re8+ Kh7 2.Qe6 Qxe6 3.Rxe6 h5
					4.Re7 Kg6 5.Kg3
0:00	1/6	8.05	22185		1.Re8+ Kh7 2.Qe6 Qxe6 3.Rxe6 Kg8
					4.Rc6 Bf8 5.Kg3 Kf7
0:00	1/7	8.20	43185		1.Re8+ Kh7 2.Qe6 Qxe6 3.Rxe6 Bf8
					4.Kg3 Kg7 5.Kg4 Kf7 6.Rb6
0:00	1/8	8.16	80133		1.Re8+ Kh7 2.Qe6 Qxe6 3.Rxe6 Bf8
					4.Kg3 Kg7 5.Kg4 Kf7 6.Rc6
0:00	1/9	8.42	177421		1.Re8+ Kh7 2.Qe6 Qxe6 3.Rxe6 Kh8
					4.Kg3 Kg8 5.Rc6 Bf8 6.Rc8 Kf7 7.Kg4
0:02	1/9	9.74	532322		1.Qxc5 Qf6 2.Re8+ Kh7 3.Qe7 Qf4+
					4.Kg1 Kg6 5.Qe4+ Qxe4 6.Rxe4 Kf7
0:02	1/10	9.70	709547		1.Qxc5 Qf6 2.Re8+ Kh7 3.Qe7 Qf4+
					4.Kg1 Kg6 5.Qe4+ Qxe4 6.Rxe4 Kf7
					7.Kf1 Bf6
0:05	1/11	9.88	1248219		1.Qxc5 Qf6 2.Re8+ Kh7 3.Qe7 Qf4+
					4.Kg1 Qc1+ 5.Qe1 Qxe1+ 6.Rxe1 Kg6
					7.Re8 Kf7 8.Rd8 Be5
0:10	2/12	9.95	2681915		1.Qxc5 Qf6 2.Re8+ Kh7 3.Qe7 Qf4+
					4.Kg1 Qc1+ 5.Qe1 Qxe1+ 6.Rxe1 Kg6
					7.Re7 Bf6 8.Rc7 Be5
0:27	3/13	9.90	7347578		1.Qxc5 Qf6 2.Re8+ Kh7 3.Qe7 Qf4+
					4.Kg1 Qc1+ 5.Qe1 Qxe1+ 6.Rxe1 Bf8
					7.Re5 Kg6 8.Rd5 Bg7 9.Rd8 Be5
1:41	4/14	10.20	27775323	1.Qxc5 Qf6 2.Re8+ Kh7 3.Qe7 Qf4+
					4.Kg1 Qc1+ 5.Qe1 Qf4 6.c5 Bf8 7.c6
					Kg8 8.Qe6+ Kg7 9.Qd7+ Kg6 10.Qg4+
					Qxg4 11.hxg4

jm



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