Author: Robert Hyatt
Date: 21:18:18 05/28/03
Go up one level in this thread
On May 28, 2003 at 17:43:51, Uri Blass wrote: >On May 28, 2003 at 17:38:48, Matthew White wrote: > >>On May 28, 2003 at 16:25:27, Uri Blass wrote: >> >>>On May 28, 2003 at 14:59:57, Uri Blass wrote: >>> >>>>I am too lazy to look at the source code of crafty to try to find what >>>>formula is used by crafty for reducing the distance between the kings in >>>>endgames like KQ vs KR to help it to win without tablebases. >>>> >>>>what is the formula that is used. >>>>I decided to try something in movei and first tests suggest that it is slightly >>>>productive but I want also to know what crafty does. >>>> >>>>Uri >>> >>>Second test suggest that my code is not productive so I may try to restrict the >>>code for cases when there are no passed pawns or maybe it is better first to >>>improve king relative to passed pawn evaluation. >>> >>>Uri >>Are you referring to the opposition, or is there another reason to reduce the >>distance between kings? >> >>Matt > >There is another reason. > >In KQ vs KR this knowledge is needed to mate without tablebases and christophe >already said in the past that tiger has this knowledge because it is useful in >other cases when one side has material advantage. > >Uri It should probably be restricted to "no pawns on the board". That's what I do.
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