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Subject: Re: Why do some engines suggest Kd8?? Am I missing something? Position-Evans

Author: John Merlino

Date: 13:09:40 11/01/03

Go up one level in this thread


On November 01, 2003 at 11:18:56, Cliff Sears wrote:

>[d] r3k2r/ppp1bp1p/6q1/4R3/3P2b1/6Pp/PP3P2/RNB1Q1K1 b kq -
>
>Black to move
>
>Position from Chess Life (to Evan's Column) pg 9 november 2003
>
>Why do some engines suggest Kd8??  Am I missing something?  Smarthink out of the
>ones
>I tested is the only one to see Evan's suggested O-O-O
>
>Delfi, Gandalf, and Lambchop suggested Kd8.  A couple of other
>engines suggested O-O

Chessmaster 9000, on a P4-2.4, needs 27 seconds to see O-O-O:

Time	Depth	Score	Positions	Moves
0:00	1/3	-1.22	1266		1...Be6 2.Nc3 O-O-O 3.Nb5
0:00	1/4	0.15	4942		1...Be6 2.d5 Bc5 3.dxe6 Qxg3+ 4.Kf1
					Qg2+ 5.Ke2
0:00	1/4	-0.29	12773		1...Qd6 2.Qe4 f6 3.Qxb7 fxe5 4.Qxa8+
					Bd8
0:00	1/5	-0.14	16577		1...Qd6 2.Qe4 f6 3.Rc5 h2+ 4.Kxh2
0:00	1/6	-0.41	48580		1...Qd6 2.Qe4 Be6 3.Qxb7 Rd8 4.Be3
					Qb6
0:00	1/6	-1.03	96939		1...h2+ 2.Kxh2 O-O-O 3.f3 Be6 4.d5
					Qc2+ 5.Nd2
0:01	1/7	-0.96	303786		1...h2+ 2.Kxh2 O-O-O 3.f3 Bxf3
					4.Qc3 Qf6 5.Rxe7 Qxe7 6.Qxf3 Rxd4
0:03	1/7	-1.04	532868		1...Kd8 2.Nc3 Bf6 3.Rb5 Re8 4.Be3
					Bf3 5.Qd2
0:07	1/8	-0.96	1255713		1...Kd8 2.Bf4 Bd6 3.Nd2 Bd7 4.Rg5
					Re8 5.Qd1 Qf6
0:16	1/9	-0.80	3011812		1...Kd8 2.Nc3 Bd6 3.Nd5 h2+ 4.Kxh2
					Bf5 5.Re2 Bd3 6.Nf4 Bxf4 7.Bxf4
					Bxe2 8.Qxe2
0:20	1/9	-1.27	3744178		1...h2+ 2.Kxh2 O-O-O 3.f3 Bxf3
					4.Qe3 Bf6 5.Qxf3 Bxe5 6.dxe5 Qc2+
					7.Nd2 Rxd2+ 8.Bxd2 Qxd2+ 9.Qg2
0:27	1/9	-1.78	5061941		1...O-O-O 2.Rxe7 h2+ 3.Kg2 Bf3+
					4.Kxf3 Qc6+ 5.d5 Qxd5+ 6.Re4 Qxe4+
					7.Kxe4 Rhe8+ 8.Kf3 Rxe1
1:19	1/10	-2.30	15060816	1...O-O-O 2.Nc3 Bf6 3.Bf4 h2+ 4.Kxh2
					Bxe5 5.Qxe5 Qh5+ 6.Kg1 Qxe5 7.Bxe5
					Rhe8 8.Rc1 Bf3

jm



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