Author: Tord Romstad
Date: 10:35:16 01/15/06
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On January 15, 2006 at 11:49:55, Tommi Rimpiläinen wrote: > >Could some one explain to me, how to use ET-cuttoffs with incremental move >generator? Is this simply impossible? I have some ideas, but I don't know if >they actually work. One could without doubt skip the first move in ETC, because >it is searched soon enough in any case. ETC has some cost, and it doesn't make sense to use it very close to the leaves. You'll probably find that it isn't worth the price unless you limit it to nodes where the remaining depth is at least 4 or 5 plies (maybe even more). At such nodes, the subtree is usually so big that you will not experience much of a slowdown if you use a non-incremental move generator. The most obvious solution, therefore, is to use a non-incremental move generator and ETC when the remaining depth is big, and switch to a faster incremental move generator and drop ETC closer to the leaves. Tord
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