Author: Dieter Buerssner
Date: 15:05:44 04/01/03
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On April 01, 2003 at 17:18:07, Juergen Wolf wrote: >according to our information the following definition is made by the UCI: > >score cp (x) : the score from the engine(s) point of view in centipawns. Yes. >We tested our GUI with some UCI-engines and we are not sure whether >all engines have implemented this correctly. For example we think that >Crafty provides an evaluation from white-point of view ( minus value if >black has advantage). Is it possible, that you mix UCI and WB/Xboard engines here. Unfortunately, under WB/Xboard the sign of the score is not defined. I think traditionally, all WB-engines showed the scores from the side to move point of view. But some engines show always from white point of view. Probably a consequence of the fact, that this is not defined. Any engine author does, like he likes it. WB (the GUI) will just show the score with the same sign as the engine reports. Other WB-GUIs try to do follow some user choice or their own policy. This will fail (without more setup complexity), because now the engines don't use the same sign anymore. Under UCI, there really should be no doubt: all reported scores must be from engine point of view. What gets displayed by the GUI is totally independent from this. Regards, Dieter
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