Author: Bas Hamstra
Date: 13:30:22 01/21/02
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On January 21, 2002 at 15:56:59, Antonio Dieguez wrote: >>It should matter in quiet positions, right? > >Well, It should matter depending on how often the pv changes, so may be more in >unquiet positions. > >>Well, here is data, opening >>position: >> >>Rootwindow <-inf, inf> takes 2404K nodes >>Rootwindow <-50, 50> takes 2420K nodes >> >>...to complete 10 ply. > >strange, I don't know the logic there, i would have guessed a bigger >difference. please don't be angry but if that is what I would get in amyan >regularly I would be sure it has a bug or I made a mistake in the experiment. It is possible of course, but I don't think so. It just don't seem to buy me a lot. As far as I know it has never been proven anyway. Plus (based on only a couple of tests) I simply don't see it here. >>Convince me with data :-) Should be no big deal to do this little test for >your engine? Difference? Other position is also fine. > >I'm not using much pvs inside the three as it does not help me, may be other >person may do that quicker. >Be well... Do you use straight alphabeta? PVS might be a tiny bit more efficient. At least that is what everybody says. But the difference is small IMO. Best regards! Bas.
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