Author: Uri Blass
Date: 09:06:26 05/04/03
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On May 03, 2003 at 20:00:55, John Boyd wrote: >On May 03, 2003 at 05:42:04, Geoff wrote: > >>Hi Ross >> >>Thanks for this excellent reply it was just what I was looking for !! > >No problemo! > >> >>>TSCP is a good place to start. >>Yep agreed, it was the only one I could vaguely understand at the start :-) > >Ditto. > >> >>>Maybe calculate mobility in your move generator? It won't be accurate though >you generate pseudo-legal moves only. >>Not quite sure how this could be done, as the move has to be made first before >>calculating mobility for both sides. > >Well, for example, I think Movei counts legal moves for the side to move and >compares with the previous ply's mobility count (rather than calculate both >sides every ply). Uri says it works for him and I believe him. Yes It works for me but there are disadvantages for it. The score is dependent on the last move and it may cause problems in using hash tables for pruning. I did not discover all the details of my mobility evaluation and the fact that I use the 2 numbers does not give all the details. Uri
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