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Subject: Re: Perhaps the ultimate materialism test position:Can programs avoid Nxa8?

Author: Ed Schröder

Date: 01:27:09 03/15/03

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On March 14, 2003 at 21:33:25, ALI MIRAFZALI wrote:

>The following astonishing position is taken from the game Atalik vs Gufeld
>Losangeles 2000:
>[D]r1b2rk1/1pNnq1b1/1B1p2n1/P2Pp2p/4Pp2/5Pp1/1P2B1PP/R2QNRK1 w
>Here Atalik played 21.h3 .In fact incorrect would be 21.Nxa8? However the
>analysis of why is very difficult and Complicated.Here are two sample lines
>given by Gufeld  A)21.Nxa8 Nxb6 22.Nxb6 Qh4 23.h3 Bxh3 24.gxh3 Qxh3 25.Rf2 gxf2
>26.Kxf2 Qh2+ 27.Ng2 Nh4 28.Qh1 Qg3+ 29.Kf1 Nxf3 30.Bxf3 Qxf3+ 31.Kg1 Qxe4
>32.Qh4 Qd4+ 33.Qf2 e4 34.Ra4 Qd1+ 35.Qe1 Qxe1+ 36.Nxe1 f3 37.Nc2 Rf4
>B) same as A) until 28: 28.Qf1 Rf6 29.Nc8 Bf8 30.Qh1 Qg3+ 31.Kf1 Nxf3 32.Rd1 Rg6
>All with advantage to Black.
>please indicate your result.

It takes Rebel12 (beta-1) 42 seconds to find 1.h3 (A-1200)

Ed

========

00:00:10.2	1,73	9	5215846	Bd4 exd4 Nxa8 Nc5 Nb6 gxh2+ Kxh2 Qg5
00:00:13.0	1,73	10	6737773	Bd4 exd4 Nxa8 Nc5 Nb6 gxh2+ Kxh2 Qh4+
00:00:25.8	-0,67	11	13831794	Bd4 Qh4 h3 Nf6 Qc2 Bxh3 gxh3 Qxh3
00:00:26.7	0,46	11	14330915	Nxa8 Nxb6 axb6 Qh4 h3 Bxh3 gxh3 Qxh3
00:00:42.4	0,49	11	23396806	h3 Nxb6 axb6 Rxa1 Qxa1 Nh4 Bc4 Qd8
00:00:44.8	0,55	12	24695559	h3 Nxb6 axb6 Rxa1 Qxa1 Nh4 Bc4 Kh7
00:00:56.2	0,54	13	31041742	h3 Nxb6 axb6 Rxa1 Qxa1 Kh7 Qa3 h4
00:01:32.0	0,53	14	51803514	h3 Nxb6 axb6 Rxa1 Qxa1 Kh7 Bc4 Nh4
00:03:25.5	0,59	15	115136186	h3 Nxb6 axb6 Rxa1 Qxa1 Nh4 Qa2 Kh7
00:05:41.6	0,63	16	199298891	h3 Nxb6 axb6 Rxa1 Qxa1 Nh4 Qa2 Kh7



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