Author: Frank Phillips
Date: 13:13:47 03/01/06
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Thanks for sharing this. I am at the preliminary stages and just thinking about refinements. Initial indications are: 1. Basic implementation, not if move extended or check or threat..etc, improved scores on tactical tests. 2. Crude use of history scores helped again In this simple case calculating the max. history score after each root move and only reducing if move history < 50% (say). (My history scores are not 2^depth and therefore do not grow ultra fast.). 3. Next stage was thoughts about trying explicit counters of when moves fail/not_fail high rather than using the history score, or adding piece_type to the history counters, which you just mentioned below :-)
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