Author: Uri Blass
Date: 04:48:39 05/03/03
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On May 03, 2003 at 07:16:15, Geoff wrote: >Hi Uri > >>Let me understand. >>Suppose White has 40 pseudo legal moves when black has 30 pseudo legal moves. >>Do you give white bonus of 1 pawns? > >Yes that is exactly right. Do other people also count pawn mobility in the >function ? I didnt do this as I thought it probably wasn't that useful and it >improved speed a tad. I have another way to calculate mobility that I plan to improve but I believe that even your simple way to calculate mobility should be productive with the right weights. > >>I think that in this case the bonus is too high. >>I suggest that you try smaller values. >>I read in the past a claim that a bonus of 0.03 pawns for square may be the >>best. > >Thinking about it again I guess that this is a good example of a mistake a >beginner is likely to make. Once you spend time working on adding a feature, the >temptation is to make the alteration too effective, causing an over >compensation. I will modify it to 0.03 and give it another test I did the opposite mistake and my mobility scores were too law in the beginning. Uri
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