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Subject: Naum issue: knkp and kbkp endgames

Author: John Brownlee

Date: 09:58:51 08/07/05


I noticed a minor issue with Naum (1.8 and 1.71 and presumably earlier versions
as well) playing knkp and kbkp endgames. When Naum has the knight or the bishop,
and Naum's king is blocking oppponent's pawn from moving, Naum declines to
capture the opponent's pawn and end the game. Instead it moves its piece around
for 50 moves.

Some engines I tried (Wildcat) seemed to have preference for finding the
tablebase capture move, and these engines end the game quickly by capturing the
opponent's pawn, saving the 50 moves of tournament (and testing) time to get the
draw.

Does anyone know of other engines that have this behavior?

Regards,
John



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