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Subject: Re: test position movei-gandalf

Author: Dieter Buerssner

Date: 16:39:24 12/27/04

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On December 27, 2004 at 18:05:21, Albert Silver wrote:

>The general rule is that if the two pawns (and you have 3) are at least 2
>squares apart, you can force the win using your king.

I wanted to post a similar message. One of the 2 chess books, I have have read -
Tarrasch, Das Schachspiel - does mention this rule. When I programmed endgames,
I looked at it, and tested many positions. To me, the rule just did not look
correct. In many "normal" cases, 2 pawns one file apart was enough. In many
other cases two files apart was not enough to win. I could not easily detect a
pattern. Can anybody give a better (more specific) rule? Simon Finn!? Robert
Smith!? (Perhaps slightly wrong name, I remember him from giving interesting
rules for endgames. But wasn't Robert Smith from The Cure?)

With normal cases I mean cases without trivial wins, where the defending King is
in reach of the panws, and the attacking side cannot easily force promotion (in
say 5 plies search).

Regards,
Dieter



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