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Subject: Re: Test Position Spassky vs Bronstein

Author: Jeff Lischer

Date: 12:27:21 04/21/01

Go up one level in this thread


On April 21, 2001 at 04:10:45, Sergey pavov wrote:

>
>
>
>  Hi,
>
>
>  In his book: Twelve Great Chess Players and Their Best Games, Irving Chernev,
>Describes The Move below as Magnificent, however when I feed the position to
>Tiger 14 on my Athlon 1000, it thinks the move a blunder, even after three
>minutes of thought.  How do we know who is correct? The position below
>
>
>
> [D]r1bqr1k1/pppnbpp1/7p/2P5/3PN3/3Q1N2/PPB1p1PP/R4RK1 w - - id Player - REBEL 10.0;
>bm e4d6;

I think you need A LOT more than 3 minutes to see if this is the right move or
not. I gave the position to Gambit 2 and here's the analysis for ND6 after about
4 hours. Notice that Gambit's evaluation of the move is steady getting better
and better. Still not getting a positive evaluation though. If I get a chance
I'll let the analysis continue overnight to see if I can get another ply deeper.

; 00:00:00.2  1.   Score: -3.58   depth: 9 Nd6 exf1Q+ Rxf1 Bxd6 Qh7+ Kf8 cxd6
Nf6 Qh8+ Ng8 dxc7 Qxc7
; 00:00:00.2  1.   Score: -2.94   depth: 10 Nd6 exf1Q+ Rxf1 Nf6 Nxe8 Qxe8 Bb3
Bg4 Qg6
; 00:00:02.5  1.   Score: -2.52   depth: 11 Nd6 exf1Q+ Rxf1 Bxd6 Qh7+ Kf8 Qh8+
Ke7 Re1+ Ne5 cxd6+ cxd6 Qxg7
; 00:00:04.8  1.   Score: -2.78   depth: 13 Nd6 exf1Q+
; 00:00:20.7  1.   Score: -2.60   depth: 14 Nd6 exf1Q+ Rxf1 Bxd6 Qh7+ Kf8 cxd6
cxd6 Qh8+ Ke7 Re1+ Ne5 Qxg7 Qb6 Nxe5 dxe5
; 00:01:11.8  1.   Score: -2.24   depth: 15 Nd6 exf1Q+ Rxf1 Bxd6 Qh7+ Kf8 Qh8+
Ke7 Re1+ Be5 Qxg7 Rg8 Qxh6 Qf8 Qh4+ f6 dxe5
; 00:04:37.8  1.   Score: -2.24   depth: 16 Nd6 exf1Q+ Rxf1 Bxd6 Qh7+ Kf8 Qh8+
Ke7 Re1+ Ne5 Qxg7 Kd7 Nxe5+ Rxe5 dxe5 Bxc5+
; 00:22:41.6  1.   Score: -1.66   depth: 17 Nd6 exf1Q+ Rxf1 Bxd6 Qh7+ Kf8 Qh8+
Ke7 Re1+ Ne5 cxd6+ cxd6 Qxg7 Qb6 Kh1 Qxb2
; 00:42:26.7  1.   Score: -1.94   depth: 18 Nd6 exf1Q+ Rxf1 Bxd6 Qh7+ Kf8 Qh8+
Ke7 Re1+ Ne5 cxd6+ cxd6 Qxg7 Rg8 Qxh6 Qb6
; 03:42:50.8  1.   Score: -1.04   depth: 18 Nd6

; Analysis completed



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