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Subject: Re: Test Position, Will Your Program Play Kb1 or the Daring Nxf7!

Author: Alan McCracken

Date: 00:07:29 02/16/05

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On February 15, 2005 at 20:53:53, John Merlino wrote:

>On February 15, 2005 at 20:30:13, Alan McCracken wrote:
>
>>Again a position taken from one of my games. A game in 15.
>>
>>[D]r3k2r/1bp1bppp/pp2pn2/4N1B1/q2P4/3B4/PPP1QPPP/2KRR3 w kq - 0 13
>>
>>Terry
>
>CM9_R1 on an AMD 2500 needs 1:37 to switch (back) to Nxf7. But the eval
>difference between Nxf7 and Kb1 are only a few centipawns:
>
>Time	Depth	Score	Positions	Moves
>0:00	1/3	0.99	2496		13.Nxf7 O-O 14.Nh6+ gxh6 15.Qxe6+
>					Kh8
>0:00	1/4	0.99	4965		13.Nxf7 O-O 14.Nh6+ gxh6 15.Qxe6+
>					Kh8
>0:00	1/5	0.73	21254		13.Nxf7 Qxa2 14.Nxh8 Qa1+ 15.Kd2
>					Qa5+ 16.c3 Qxg5+ 17.Kc2
>0:00	1/6	0.63	115498		13.Nxf7 Qxa2 14.Bxf6 Bxf6 15.Qh5 g6
>0:01	1/7	0.13	273083		13.Nxf7 Qxa2 14.c4 O-O 15.Bb1 Qa4
>					16.Nh6+ gxh6 17.Qxe6+ Kh8
>0:01	1/7	0.48	378521		13.Bc4 O-O 14.Ng4 Nd5 15.Bxe7 Nxe7
>					16.f3 Ng6 17.Bb3
>0:02	1/7	0.62	464602		13.Kb1 O-O 14.Ng4 Nd5 15.Bxe7 Nxe7
>					16.Be4 Nd5 17.Qf3
>0:03	1/8	0.50	805017		13.Kb1 O-O 14.Ng4 Nd5 15.Bxe7 Nxe7
>					16.Be4 Bd5 17.a3 Rad8
>0:11	1/9	0.46	2626142		13.Kb1 O-O 14.Ng4 Nd5 15.Bxe7 Nxe7
>					16.Qe5 Bxg2 17.Qxc7 Bf3 18.Qxe7
>					Bxg4
>0:35	1/10	0.90	8516946		13.Kb1 O-O 14.c4 h6 15.Bxf6 Bxf6
>					16.Bc2 Qa5 17.Be4 Bxe4+ 18.Qxe4
>					Rad8
>1:17	1/11	0.94	19091186	13.Kb1 O-O 14.c4 h6 15.Bxf6 Bxf6
>					16.Bc2 Qe8 17.Be4 Bxe4+ 18.Qxe4
>					Qa4 19.Ka1 Bxe5 20.dxe5
>1:37	1/11	1.00	24569812	13.Nxf7 O-O 14.Qxe6 Rxf7 15.Bc4
>					Bd5 16.Bxd5 Nxd5 17.Qxd5 Bxg5+
>					18.Kb1 Rf8 19.Qxg5 Rxf2 20.Rd2
>2:59	1/12	0.95	47326424	13.Nxf7 O-O 14.Qxe6 Rxf7 15.Bc4
>					Bd5 16.Bxd5 Nxd5 17.Qxd5 c6 18.Qxf7+
>					Kxf7 19.Rxe7+ Kg6 20.Bf4 Qxa2
>
>jm

I don't agree with the analysis of CM9_R1, after 13..0-0, I'd play 14.Ne5! with
good attacking chances.

Terry



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