Author: Tony Werten
Date: 13:05:45 11/21/02
Go up one level in this thread
On November 21, 2002 at 13:52:33, Omid David Tabibi wrote: >On November 21, 2002 at 13:05:28, Uri Blass wrote: > >>On November 21, 2002 at 09:16:09, Omid David Tabibi wrote: >> >>>On November 21, 2002 at 08:34:36, Uri Blass wrote: >>> >>>>1)I do not find in the pseudo code in figure 3 undo null move. >>>> >>>>I assume that it should be before if value>=beta and after value=-search(...) >>>>Am I right? >>>> >>> >>>That is why it is called *pseudo*-code :-) >>>You have to fill in the obvious parts by yourself... >>> >>> >>>>2)What is the value of the research for tactical strength? >>>>Should it help significantly relative to searching to reduced depth when >>>>value>=beta without research (even when we get value that is less than beta). >>>> >>> >>>I didn't understand the question. Dp you mean doing a shallow search even when >>>we don't have a fail-high report?! >> >>I meant to ask what is the tactical value of the research(You suggested people >>to start with doing it without the research first and only after it works to do >>it with the research) >> > >The re-search is needed only in zugzwang positions. Such zugzwang positions >occur very rarely in midgames; so you can forgo the zugzwang detection re-search >and still benefit all the improved tactical performance. I was quite surprised to see them from the starting position at a rate of 5 per second. Not impressive, XiniX searches 400 Kn/s there, but still surprising. Tony > > >>Uri
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