Author: Don Dailey
Date: 21:50:12 06/25/98
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On June 25, 1998 at 21:05:31, Vincent Diepeveen wrote: > >On June 25, 1998 at 19:21:44, Bruce Moreland wrote: > >> >>On June 25, 1998 at 14:04:47, Johanes Suhardjo wrote: >> >>>On June 18, 1998 at 13:35:47, Bruce Moreland wrote: >> >>>>I don't know what is going on here either. Mine gets Ra3 in < 1 second on a >>>>P6/200, with a score of +2, has +4 in 6 seconds, and has +7 in 38 seconds. >>>> >>>>Is this because Fritz is doing null move in K+P endings or something? > >Yes if i remember well then this is the reason that Fritz lost some important >points in a world championship because of this (against genius). Fritz does NOT use null move at all in king and pawn endings, he turns off the pruning. Maybe he did a few years ago. That is why programs that prune will finally get to "outsearch" Fritz for the first time when they get to this ending! But probably Fritz will still see more than most of the other programs. I use a different kind of pruning in these endings but I've always limited it even when I did null move prunning. These endings are full of indirect threats, just about every king move is an indirect threat. - Don
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