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Subject: Re: Positional test - The Frozen Bishop

Author: Vincent Diepeveen

Date: 06:38:54 03/01/01

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On February 28, 2001 at 11:48:39, Sune Larsson wrote:

A very cool position. Diep solves it quick to my surprise (thought
it would not like g5 so quick but it does).
After nd5 it plays g5 with bxf3 in mainline and score getting
up for black at each ply. Nd5 not played of course in original position.



>
>  [D]r1bq1rk1/ppp2pp1/3b1n1p/2p1p3/4P2B/2NP1N2/PPP2PPP/R2Q1RK1 w - - 0 1
>
>  Here is an example of a definitive no-no. This position happened in
>  Winter(!) - Capablanca, London 1922. Here white was a bit careless
>  and played 1.Nd5?  after 1.-g5 2.Nxf6+ Qxf6 3.Bg3 Bg4 4.h3 Bxf3
>  5.Qxf3 Qxf3 6.gxf3, the proud bishop was reduced to a simple pawn.
>  This preacher never saw the daylight anymore...
>
>  Test1: 1.Nd5? is a clear no-no and should be evaluated with penalty
>         points.

Not Nd5 must be evaluated but the resulting positions of course :)

For humans it's hard to discriminate between search and evaluation i
noticed that more :)

>  Test2: If 1.Nd5? is faced, your program should give definite +scores
>         to the line above. And choose this path in play.
>
>  Sune



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