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Subject: Re: Testposition - Rookending

Author: Christophe Theron

Date: 18:02:09 02/25/01

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On February 25, 2001 at 13:46:32, Sune Larsson wrote:

>
>  [D]8/5p1k/r5pp/P7/3R3P/6P1/5PK1/8 w - - 0 1
>
>
>  1927 Alekhine won the 34th game in the battle vs Capablanca to become
>  World Champion. He did it by playing 1.Ra4! in the above position.
>  Black's rook has to block the pawn and white has at his disposal an
>  endless reserve of rook moves along the a-file. Again, the future for
>  black spells "Zugzwang". The general rule is that a passed pawn should
>  be supported by a rook from the rear. That's why ideas of 1.Rd5? are
>  wrong. This is a knowledge that have to be implemented in many chessprograms.
>  I have seen numerous examples of trying to support such a pawn sideways.
>
>  What would your favourite program play?
>
>  Sune



My first reaction has been to laugh loud at this one, because I thought I had
introduced this knowledge in Chess Tiger already.

Then I tried, and I must admit that Tiger wants to play Rd5 all the time (I
stopped after one minute, really angry).

Grr...

Now I remember, the knowledge I have introduced is about the position of the
black rook in the above diagram. It's something else.


    Christophe



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