Author: Bruce Cleaver
Date: 17:15:58 02/14/04
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"Why not use a logarithmic scale based on the difference between the best possible move and the move under consideration?" Ron Rivest (he is the "R" in the RSA encryption algorithm) wrote a chess algorithm called min-max approximation, which computes the first derivative (really!!) of the score's change as a means to shape the search. It has somewhat the same flavor as your idea. It is really beautiful, but has two flaws: it is a best-first searcher (therefore exponential in memory), and heavily involves floating-point calcs. The first objection can be overcome in the standard way, but not the second.
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