Author: martin fierz
Date: 00:54:27 01/26/01
Go up one level in this thread
On January 25, 2001 at 08:20:26, David Rasmussen wrote: >Howdy. > >Inspired by the thread on extensions, I was wondering whether the idea of >negative extensions or reductions could be a good one. > >I mean, maybe many of the "unsound" pruning methods would be sounder if, instead >of just pruning, they just adjusted the resulting depth down. In that way, a >line would still be examined, only later. in computer checkers 'negative extensions' are a standard technique, schaeffer used something like that in chinook and i use it too in my checkers program. of course, checkers is much more suited to the concept: once you lose a piece in checkers you are probably lost, so you can reduce the depth of these lines. in chess you have a king which makes things more complicated... cheers martin
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.