Author: Vincent Diepeveen
Date: 10:17:10 10/11/02
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On October 11, 2002 at 11:32:22, Alessandro Damiani wrote: the answer was clear enough for me to understand that selectivity has just to do with nullmove. 0 = fullwidth 2 = R.D.F. >You did not read! I never talked about selectivity 0!! > > >On October 11, 2002 at 08:04:21, Vincent Diepeveen wrote: > >>On October 10, 2002 at 06:51:47, Alessandro Damiani wrote: >> >> >>Wrong, selectivity 0 at fritz gives it a complete fullwidth >>search. >> >>Quote: Frans Morsch >> >>>On October 10, 2002 at 02:01:51, Uri Blass wrote: >>> >>>>On October 09, 2002 at 23:06:48, Robert Hyatt wrote: >>>> >>>>> >>>>> >>>>>I had to stop the experiment sooner than I wanted, but I did find some >>>>>interesting things out. >>>>> >>>>>1. at _very_ fast time controls (40 moves in 1 minute) null-move completely >>>>>destroys non-null-move >>>>>by a ridiculous margin. (this ended something like 60 wins, 5 losses, 8 draws) >>>>> >>>>>2. At longer time controls (40 moves in 10 minutes) non-null-move catches up >>>>>somewhat. It still loses >>>>>far more than it wins, but not _nearly_ so bad as test 1. (this was closer, but >>>>>with fewer games played) >>>> >>>>It seems based on your data that null move is more important for blitz and not >>>>for long time control. >>>> >>>>Interesting to know also the difference in plies >>>> >>>>If I compare depth after 3 minutes of search then I see for deep Fritz 3-5 plies >>>>difference at 3 minutes per move between selectivity 0 and the default value 2. >>>> >>> >>>By using a program with unknown source code you cannot be sure that >>>selectivity=2 is only related to null-move. >>> >>>Alessandro
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