Author: Robert Hyatt
Date: 10:16:00 03/30/04
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On March 30, 2004 at 12:29:42, Renze Steenhuisen wrote: > >Hi all, > >today I wanted to implement SEE, and use it in the Qsearch. My SEE isn't using >X-ray (discovered attacks) at the moment, but I already expected to see a boost >in FH-%. Unfortunately I didn't see it yet... > >Using it in the main-search did give an advantage of some 5% > >1> Is SEE not that important in Qsearch? > >2> With MVV/LVA I had about 15-20% Quiscence nodes, with SEE I have 25-30% > Qnodes!? > >Could some one give an overview of which move-ordering technique is responsible >for how much FH-%?! > >Thanks! > >Renze If you use SEE everywhere for move ordering, it will reduce the total tree size by about 10% over MVV/LVA. But if you use SEE to eliminate hopeless captures in the tree search, you will reduce the tree size by more than 50%, which is very significant. MVV/LVA can't be used to do this since it is a poor estimator for expected gain or loss...
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