Author: Pat King
Date: 09:30:13 06/14/99
Go up one level in this thread
On June 14, 1999 at 07:35:35, David Blackman wrote: >On June 14, 1999 at 00:32:46, Will Singleton wrote: > [snip] >>Of course, if you don't use fail-soft, then it never occurs. I think you can >>get away with that by using pvs. >> >>Will > >I've seen it in programs that don't do fail-soft. I don't use 'fail soft', so it seems that that's not a factor. [snip] >In the null move case, this only matters when you have zugzwang (very rare >except in certain endings) or where reducing the search depth by a few plies >hides something that matters more than a tempo does (moderately common during >bizarre tactics). So if it happens every single move, you probably have a bug, >but if it's just occasionally, and most often during sharp tactics or endgames, >then it's a known effect. Reassuring. It happens in complex positions and when mates first start to pop over the horizon. Perhaps disabling null move on the second search, and keeping the window? Of course, MMMV :)
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.