Author: Dan Honeycutt
Date: 08:36:24 09/04/04
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On September 03, 2004 at 10:29:11, Stuart Cracraft wrote: > >I am glad you raised this as I wanted to talk about. My program is a mixture >of return(value), return(beta), and return(alpha) and I've not been happy with >that. My quiescence is mostly return(beta). The main search is a mixture. >Whenever I make everything return(value), PVS goes weird on me and stops >solving problems as well (big drop). What should I do? > Hi Stuart: I think its a function of what you store in the hash. Say you get back a value > beta. You are going to cut and save a lower bound score in the hash. If the position occurs again you are going to get a hash cut if the stored score is greater than some future beta. If you stored the higher score (value instead of beta) your chances for a hash cut are greater. Thus less nodes but also less vision. I use fail soft. I get more depth and worse results on test suites but it seems to play better. YMMV. Dan H.
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