Author: Robert Hyatt
Date: 10:28:23 10/14/02
Go up one level in this thread
On October 14, 2002 at 04:53:28, Andreas Guettinger wrote: >On October 13, 2002 at 21:20:32, Robert Hyatt wrote: > >>On October 13, 2002 at 12:00:39, Andrew Williams wrote: >> >>>Several people asked: >>> >>>Question: What does "12(6)" mean in Deep Blue's logs? >>> >>>Dr Hsu said, "12(6) means 12 plies of brute force (not counting the search >>>extensions & quiescence). 6 means the maximum hardware search depth allowed. >>>this means that the PV could be up to 6 plies deeper before quiescence." >>> >>>Unfortunately questions were being fed through a third-party, so it wasn't >>>possible to get a follow-up. >>> >>>Andrew >> >>I saw the question and answer tonight when I got back home. >> >>Too bad the question wasn't phrased reasonably to clear up the ambiguity. >> >>The above doesn't contradict the email I got from DB team members, nor does it >>contradict the article they published. It is just too vague... > > >Seems pretty clear to me what he said. The PV can be up to 6 ply deeper than 12 >ply before quiescence search starts, this make a maximal PV length of 18 (not >including extensions). > >regards >Andreas The question is, "what does 'up to' mean?" IE does 12(6) mean 12 plies in software, 6 plies in hardware _always_?" Or does it mean "12 plies in software, and 2,3,4,5 or 6 plies in hardware depending on something else?" Or does it mean "12 plies in hardware, plus a max of 6 in hardware" where the "max" is simply an observed value for that specific search (ie like some programs show you the max depth they ever reach). It is still a bit ambiguous, IMHO...
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.