Author: Ernst A. Heinz
Date: 00:34:50 10/22/98
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On October 21, 1998 at 16:33:13, Robert Hyatt wrote: > >Alpha/beta only proves that non-best moves are non-best, no matter which >variant >is used... and in the case here, any attempt to extract more information >(which >is best, second-best, etc...) comes at enormous cost... Okay, now I see where our "disagreement" springs from. I interpreted your statements as relating to the distinct root *moves* whereas your point of view was from the root *position*. Of course, putting any *position* into any variant of alpha-beta gives you no more information than the best move and its score. However, if you refrain from doing minimal-window searches for any of the root moves (i.e., the resulting ply-1 *positions*) you can calculate accurate scores for all of them. But this surely breaks the alpha-beta paradigm at ply 0 = the root position. =Ernst=
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