Author: Ratko V Tomic
Date: 00:06:16 11/10/99
Go up one level in this thread
> It is same technique. Could you give a hint here of the basic idea for those who don't have this ICCA issue (I stopped subscribing to the ICCA in 1993, so I can't check it; but if you have a TEX or PS or .DOC file etc accessible via an ftp I could read it from there). I always wondered why the null-move implementations don't use an arbitrary move for the skipped side (can move king back & forth or anything else saved from earlier & checked for legality), since the time saving doesn't come from not making that one/few in-between moves of the passive side but from not varying them (over all legal moves for the passive side). That's what cuts the tree size (acting as a forward pruner using width=1 for every second ply depth).
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