Author: Robert Hyatt
Date: 18:41:57 01/19/04
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On January 19, 2004 at 20:09:08, Sune Fischer wrote: > >How can it be nonsense? Same way I described previously. You reach positions that were not searched with the same "criteria" as when the PV was searched... > >Let's say you pick up a single pv move and then qsearch is called. >That would end the pv. > >The pv might lead to a bad position now, but it can't be considered nonsense >when you know what your qsearch can and can't resolve. If you don't hash the q-search, then obviously the PV will _never_ have any q-search captures in it. But when I was doing this, I did hash in the q-search. The same problem arises irregardless. Prior to the q-search, you can overwrite stuff. When you probe for "imaginary" positions beyond the end of the current hash-table-hit position, you can get anything. Good moves. Moves that don't go with the current PV. And with today's Crafty I would get no q-search moves at all, and they are often critical to see. > >-S. > >P.S. >By the power invested in me I hereby grant you full permission to snip the parts >you do not reply to.
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