Author: Mike Siler
Date: 13:20:14 01/24/04
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On January 24, 2004 at 16:07:04, Volker Böhm wrote: >On January 24, 2004 at 15:57:50, Mike Siler wrote: > >>In an average middlegame position, around 80-85% of the nodes my program >>searches are quiesce nodes. I have a static exchange evaluator and I only search >>captures with SEE value > 0. It seems like other engines are always under 25% >>qnodes. What else should I be doing to reduce these numbers? >> >>Michael > >What do you count as quiesce node? Do you count a totally quiet horizont >position a quiesce node? If yes, 80-85% is ok. Else you´ve got a bug. Every time quiesce() is called, I increment qnodes. > >To reduce nodes in quiesce: > >1. if static-eval > beta -> finished That much, I've already got. >2. if static-eval + piece-to-hit + bonus < alpha -> prune. I just added this, but it didn't seem to make much difference. I suppose I probably have some sort of bug. > >that should be enough to reduce nodes to 25% if not searching "bad SEE hits" > >P.S. search if SEE == 0 too > >Greetings
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