Author: Robert Allgeuer
Date: 09:28:09 01/03/06
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>It is possible that Sergei introduced the name "history pruning", but the >technique itself is very old; certainly much older than SmarThink. I no >longer remember where or when I heard about it for the first time, but it was >definitely not in this millennium. It would be really interesting where this technique came from, given that it is now in wide-spread use. Maybe a forum member knows... > >"History pruning" is a really bad name for the technique, by the way. Since >a long time, I have been advocating to rename it to "late move reductions". > True, but somehow this name "history pruning" sticks. Robert >The word "history" is misleading because the technique can be implemented >without using history counters. I currently use a combination of null move >threat detection and evaluation data to make my late move reduction decisions, >and don't use history counters at all. This seems to work clearly better, >at least in my program. > >The word "pruning" is misleading because most people don't use the idea >to prune moves, but only to reduce the search depth. > >"Late move reductions" is a much more appropriate name, and does a better >job of explaining what the idea is about: Reducing the depth for the less >interesting moves late in the move list. > >Tord
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