Author: Chan Rasjid
Date: 00:04:43 03/05/06
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On March 04, 2006 at 20:12:47, Robert Hyatt wrote: >On March 04, 2006 at 18:26:47, Chan Rasjid wrote: > >>This is for an earlier thread somewhere. >> >>It may be piece12-to may be better than from-to for history stuff. >> >>A side may attempt to retain a certain board configuration or a part if it >>strong >>especially near the palace. Then such spaces may be good or bad for certain >>piece-type-color and the from sqaure has no relevance, only the type and color. >> >>Also in endgame, the significant pieces are pawns and kings and the above >>analysis >>may also apply. >> >>The above non-random goodness or badness of squares towards type-color will give >>the history value a bias towards fh/fl and it is this non-random bias that makes >>history useful. >> >>Rasjid > >I tried both and could not get piece-to to out-perform to-from. They were >close, but to-from was always just a bit faster for me. I ran several test >suites, including ecmgcp for testing, plus some non-tactical positions to make >sure they didn't behave differently... > >This probably varies by engine, no doubt... Testing is the final arbiter. I have yet to try any, but at least it is "close" as you say, so I'll keep in mine a possible alternative. Thanks, Rasjid
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