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Subject: Re: FEN Correction

Author: John Merlino

Date: 12:51:52 12/17/02

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On December 17, 2002 at 09:00:05, Michael Neish wrote:

>
>There was something wrong with that FEN.  Here it is again:
>
>[D]1r2q1k1/1np2ppp/p2p4/3N4/Pp6/5N1P/1P1Q1KP1/4R3 b - -

In the original position, CM9000 on a P3-733 gives up on Qxa4 in 7 seconds at
depth 8:

Time	Depth	Score	Positions	Moves
0:00	1/3	1.18	1240		1...Qxa4 2.Nxc7 Qc6 3.Nd5
0:00	1/4	0.72	4601		1...Qxa4 2.Nxc7 b3 3.Nd5 Nc5
0:00	1/5	1.02	13957		1...Qxa4 2.Nxc7 Rc8 3.Nd5 Rc2 4.Re8+
					Qxe8 5.Qxc2
0:00	1/6	1.02	31028		1...Qxa4 2.Nxc7 Rc8 3.Nd5 Rc2 4.Re8+
					Qxe8 5.Qxc2
0:03	1/7	1.12	257949		1...Qxa4 2.Ng5 Qb3 3.Ne7+ Kh8 4.Qxb4
					Qa2 5.Kg1
0:06	1/8	3.95	622421		1...Qxa4 2.Ng5 Nc5 3.Ne7+ Kf8 4.Nxh7+
					Ke8 5.Nc6+ Kd7 6.Nxb8+ Kc8 7.b3
					Nxb3
0:07	1/8	1.75	754119		1...Qf8 2.Nxc7 Nc5 3.Nd5 Rb7 4.a5
					Nb3 5.Qf4 Nxa5 6.Nxb4
0:10	1/9	1.98	1072479		1...Qf8 2.Nxc7 Nc5 3.Kg1 a5 4.Nd4
					Kh8 5.Nd5 Re8
0:20	2/10	1.90	2057765		1...Qf8 2.Nxc7 Nc5 3.Kg1 a5 4.Nd4
					Rc8 5.Nd5 Re8 6.b3 Re5
0:54	3/11	2.04	5411416		1...Qf8 2.Nxc7 Nc5 3.a5 Rb7 4.Nd5
					Nb3 5.Qe3 Nxa5 6.Qd3 Rb5 7.Ne7+
					Kh8 8.Qxd6
2:45	4/12	1.97	16709557	1...Qf8 2.Nxc7 Nc5 3.a5 Rb7 4.Nd5
					f5 5.Kg1 Ne4 6.Qd3 Qf7 7.Rc1 Nc5

After forcing Qxa4, it says:

Time	Depth	Score	Positions	Moves
----	----	----	----		----
0:00	1/3	0.73	1585		2.Nxc7 b3 3.Nd5 Nc5
0:00	1/4	1.02	6342		2.Nxc7 Rc8 3.Nd5 Rc2 4.Re8+ Qxe8
					5.Qxc2
0:00	1/5	1.02	24825		2.Nxc7 Rc8 3.Nd5 Rc2 4.Re8+ Qxe8
					5.Qxc2
0:01	1/6	0.92	91704		2.Nxc7 Rc8 3.Nd5 Rc2 4.Re8+ Qxe8
					5.Qxc2 Nc5 6.Nxb4
0:01	1/6	1.12	118044		2.Ng5 Qb3 3.Ne7+ Kh8 4.Qxb4 Qa2
					5.Kg1
0:05	1/7	3.96	517169		2.Ng5 Nc5 3.Ne7+ Kf8 4.Nxh7+ Ke8
					5.Nc6+ Kd7 6.Nxb8+ Kc8 7.b3 Nxb3
0:14	1/8	3.29	1689245		2.Ng5 h6 3.Ne7+ Kf8 4.Nh7+ Ke8
					5.Nc6+ Kd7 6.Nxb8+ Kc8 7.Nxa6 Qxa6
					8.Qxb4 Qa7+ 9.Kg3 f5
0:18	1/8	3.89	2146189		2.Ne7+ Kh8 3.Ng5 Qa2 4.Qxb4 Rf8
					5.Qxb7 Qc4 6.Kg3 f5 7.Kh2
0:32	1/9	4.39	3733032		2.Ne7+ Kh8 3.Ng5 Qa2 4.Qxb4 a5
					5.Qxb7 Qxb2+ 6.Kg3 g6 7.Qxc7 Qb3+
					8.Kh2 Qb4 9.Nxf7+ Kg7
1:16	2/10	5.05	8954797		2.Ne7+ Kh8 3.Ng5 Qa2 4.Qxb4 a5
					5.Qxb7 Qxb2+ 6.Kg3 g6 7.Qxc7 Qb3+
					8.Kh2 Kg7 9.Nc6 Rb5 10.Ne6+ Kh6
					11.Qxf7
6:15	3/11	5.25	44905440	2.Ne7+ Kh8 3.Ng5 Qa2 4.Qxb4 a5
					5.Qxb7 Qxb2+ 6.Kg3 g6 7.Qxc7 Qb3+
					8.Kh2 Ra8 9.Rb1 Qe3 10.Nxf7+ Kg7
					11.Nxd6

jm



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