Author: Volker Böhm
Date: 23:11:44 08/03/04
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Hi, for every pruning you make I suggest to implement a pruning test. In Test mode do the following: 1. Remember if you are pruning 2. Don´t do the pruning, but search normally 3. Returning from the search find out if the pruing would have been correct. 4. If not: Count for statistic, build a maximal error value, print out fen of the current position 5. Look at the fens, find out if you have to implement additional rules to exclude wrong prunings. For extendet futility you have to make sure, that you are nearly not making any error, because the error would possible not be fixed at the next search depth. Greetings Volker P.S. I do not use futility so far, because it depends much on the engine. Thus if you´ll plan to improve your engine much futility can IMHO make improvements harder to test. Greetings Volker
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