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Subject: Re: ECE problem - rook endgame

Author: blass uri

Date: 12:28:07 01/06/99

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On January 06, 1999 at 13:46:39, Jon Dart wrote:

>I have been running a test suite from ECE (Encylopedia of Chess
>Endings) for a while.
>
>The very first problem is this one:
>
>R7/8/8/8/3K4/8/3kp3/8 w - - bm Ra1; id "position 0001";
>
>Crafty and Arasan both prefer Ra2+. Arasan's PV is
>Ra2+ Kd1 Kd3 e1=N+ Kc3 Nf3 etc. In words, White forces
>Black to under-promote and goes into a KR vs KN endgame,
>which is almost certainly drawn.
>
>Ra1 draws immediately, after e1=Q Rxe1 Kxe1.
>
>It is pretty hard to say that Ra2+ is really worse, but
>a human player would probably see that both approaches
>draw and opt for the draw right away.


I do not think that a human player would opt for the draw right away.

I think most of the humans would try to win by Ra2+ hoping for a mistake of the
opponent.

Uri




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