Author: Gian-Carlo Pascutto
Date: 08:54:35 03/29/02
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On March 29, 2002 at 11:15:18, Oren Avraham wrote: >1) Do I use the values stored in the TT when i'm scanning with Iterative Deeping >? (example: values from depth 4 are not accurate (and even misleading) in depth >5 (and so on...) Correct. What info you _can_ get out of the TT is the best move, and use this in move ordering. >2) How do i use the Upper/Lower Bounds and when. > the lines : if lowerbound >= beta return lowerbound > else break; > > confuse me - why this condition is checked - the values should be correct in >all the cases because a rescan will generate the same cutoffs ... A lowerbound means: the TT indicates this position is at least this good Beta means: if the position is this good you don't need to look any further Combine the two, and you see that you can take a cutoff immediately. I don't understand what you mean with ' the values should be correct in all cases ?' -- GCP
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