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Subject: Second diagram corrected.

Author: José de Jesús García Ruvalcaba

Date: 11:29:17 09/27/02

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On September 27, 2002 at 14:28:16, José de Jesús García Ruvalcaba wrote:

>On September 26, 2002 at 09:44:11, Severi Salminen wrote:
>
>>>Ruffiah seams to be a modern engine. It uses the null-move heuristic heavily.
>>>Since the endgame is all about zugzwang it is no surprise that Ruffian will fail
>>>to to properly in that area. Tablebases resolve this partially.
>>>So why don't you use them??
>>>Showing bad results when you criple the engine dosn't say anything about the
>>>engine, it says something about the user.
>>
>>Nullmoves have nothing to do with winning KR-K endings - no zugzwangs involved
>>at all.
>
>KR vs K is only about Zugzwang. Two critical positions:
>[D]3k4/8/4K3/2R5/8/8/8/8 b
>[D]1k6/7R/2K5/8/8/8/8/8 b
>
>>The knowledge needed to win many types of basic endings is very easy to
>>code and works in _many_ positions: drive the opposing king to a corner.
>>
>>Severi



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