Author: Carlos del Cacho
Date: 10:27:44 08/13/00
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On August 12, 2000 at 18:11:48, Georg v. Zimmermann wrote: >Ok, > >any good ways to limit qsearch when you detect that the qsearch overhead is >getting too big, or to slowly increase the qsearch depth with the normal search >depth ? Any good (not risky) way to razor in qsearch at very low plys to stop >this problem ? Here's what I do: - write an SEE evaluator if you don't have one and prune any move whose capture score is below zero (not perfect because of pins, but i find it worthy). - when the piece captured doesn't get close to alpha (say 1-2 pawns), you can skip the evaluation at the next ply level. That ought to save some time (futility pruning in the quiescent search, I think). You can also do this with your SEE but that means more risk of making mistakes on pins... Cheers Carlos
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