Author: Gian-Carlo Pascutto
Date: 12:37:20 09/28/01
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On September 28, 2001 at 14:37:32, Alvaro Jose Povoa Cardoso wrote: >Suppose I'm doing a 12 ply search and at ply 2 I have a promotion or a pawn at >the 7th rank. >Should I extend? Or should I extend these cases only at frontier nodes / >qsearch? >My reason is that if we are a ply 2 we don't need to extend because we have 10 >ply remaining to search. >But if we are at fontier nodes or at quiescence search then we need to search >deeper these and other cases. >So, could we only do extensions at frontier nodes and at qsearch? >Perhaps my idea/concept of extensions is incorrect. >Could someone comment on this? Most programs I know of do the extension regardless of the depth remaining. I think the reasoning is that a forcing move shouldn't actually count as a ply when deciding how much deeper to search. That doesn't mean what you propose isn't good. In fact, this is how several of my extensions worked before I made them fractional. -- GCP
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