Author: Bo Persson
Date: 01:54:54 06/27/03
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On June 27, 2003 at 01:00:17, macaroni wrote: >On June 27, 2003 at 00:24:19, Russell Reagan wrote: > >>On June 27, 2003 at 00:18:57, macaroni wrote: >> >>>What are the most used methods for sorting out the 'unworthy' lines? I currently >>>use the history heuristic... >> >>Generally when I think of "sorting out the 'unworthy' lines", I think of forward >>pruning. The history heuristic is mainly concerned with improving your move >>ordering (which does help you get more cutoffs and in turn prunes inferior >>lines), but the history heuristic by itself doesn't get rid of bad lines. >> >>The most popular example of forward pruning is null-move pruning. >> >>>but my main search seems to be doing ok anyway, it's >>>the quiescence search that's having problems, with the q search I use biggest >>>capture, smallest attacker, is there something much better? >> >>Are you considering every possible capture? Or are you only considering "good >>captures"? > >thats the thing, how do I select 'good captures'? I can order them (biggest >piece captured, smallest capturer), but what possible methods are there for >checking 'good captures only'? One way is to look for 'good enough captures'. PxQ is probably ok, but what about PxN or RxP? If you are *way* below alpha in the qsearch, you might skip some captures that would not bring you much closer anyway. Bo Persson bop2@telia.com
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