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Subject: Re: Another suggestion for Crafty and similar programs

Author: Rafael Andrist

Date: 12:57:09 09/20/03

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On September 20, 2003 at 15:47:07, Steven Edwards wrote:

>Here's another suggestion for Crafty and similar programs:
>
>If ((the program has an opening book mechanism)) &&
>    (the opening book mechanism handles transpositions) &&
>    (the opening book mechanism is reasonably fast) &&
>    (the opening book library is reasonably large) &&
>    (the interior search uses move ordering))
>{
>    try using the opening book mechanism to help order moves at selected
>interior nodes;
>

I already tried this out some years ago and I'm still doing this, I'm sure
others did/do too. But I did not find a significant improvement of the move
ordering, e.g. some minor changes to the history heuristic could easily have a
much bigger effect. But it does not hurt performance, so I did not remove the
code.

regards
Rafael B. Andrist




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