Author: Heiner Marxen
Date: 13:33:25 02/07/01
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On February 07, 2001 at 16:22:12, Severi Salminen wrote: >Hi! > >Thanks for detailed explanation. > >>1. You might start the next iteration without a PV to guide the search. >>Internal iterative deepening helps. > >Oh, a new term again: internal iterative deepening. I think this was the thing I >wondered in Crafty's search.c. Do you use IID in other places than when you are >in PV node and don't have a move to try? Has anyone ever tried to use IID in >_every_ node? Chest does that. But you did not want to know that, I suspect ;-) >If it helps in the root why wouldn't it help in other nodes as well... IID can be a considerable overhead. You better have a good reason to do it. What does IID give you? A good move ordering. If you do not believe that your move ordering must be improved (at a certain node), then there is not much gained by IID. A missing PV seems to be a good reason to do IID. Heiner
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