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Subject: Re: Move ordering ideas

Author: Matt McKnight

Date: 22:44:00 03/08/01

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I am already trying captures first

These ideas are being used after all captures are tried, winning and losing.

First idea:
   The similarity between this idea and killers, is only of keeping a list of
two moves per ply.  These moves are going to be played DEAD LAST.  So these
aren't getting played before capture moves.

Second idea:
   These moves get played toward the end of the search, after all winning and
losing captures.  The scores for these moves are < even_exchange - queen_val

   For instance, an even exchange would get a score of 10000 for move ordering,
while a winning exchange would be 10000 + mat_gain.  The ordering I'm using is
simply the change of the positional value of the piece.  So the score is the
difference between the piece's value on it's destination square, and it's origin
square.  These numbers are < 10000-queen_val.  Does this make sense now?

Matt




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