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Subject: My humble experience with bitboards

Author: José Carlos

Date: 16:03:38 11/27/02


  I've been writing a new program in the last few weeks (at about 4-5 hours a
week). I wanted to experience with bitboards (non rotated) and MTD(f).
  After writing the search structure (data representation, make-unmake, hashing,
etc...) I've started to add some eval.
  I must say I'm really _amazed_ by how many things I can do with bitboards with
so little effort. Attacked squares patterns, board control, mobility... all
dynamics stuff is really easy to write (not tried statics yet).
  The program is still far from playing a whole game, and I'm not gonna have any
spare time in the next few months, but I expect it to outplay Averno completely
(though I'm having a horrible branching factor with MTD).
  And the best is, when you get into bitbords world, ideas come to mind faster
than you can write them down!
  I still know almost nothing about bitboards, but I'm already impressed.

  Just my humble experience.

  José C.



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