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Subject: Crafty 17.13 released!

Author: Severi Salminen

Date: 10:06:38 09/07/00


Source released. These are the major updates:

*   17.13   endgame evaluation problem fixed.  king scoring now dynamically
*           chooses the right piece/square table depending on which side of
*           the board has pawns, rather than using root pre-processing which
*           could make some gross errors.  glitch with majorities would make
*           an "inside majority candidate" offset a real outside passed pawn
*           even if the candidate would not be outside.  a suggestion by
*           Blass Uri (CCC) was added.  this adds .01 to tablebase scores if
*           the side on move is ahead in material, and -.01 if the side on
*           move is behind in material (only for drawn positions.)  the
*           intent is to favor positions where you are ahead in material
*           rather than even in material, which gives 'swindle mode' a
*           chance *
*           to work.  bug in EvaluateDraws() would mis-categorize some B+RP
*           (wrong bishop) as drawn, even if the losing king could not make
*           it to the corner square in time.

Severi




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