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Subject: Re: Evaluation-based Reductions and/or Extensions

Author: Tom Likens

Date: 20:31:21 12/28/03

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On December 28, 2003 at 20:54:36, Bob Durrett wrote:

>Your bulletin is exciting since it shows there is still room for innovation in
>engine design.  As you and others here develop and implement this idea the
>overall level of play of chess engines will go up simply because the
>front-runners will be forced to adopt some of your new ideas.  I have often had
>the suspicion that "current wisdom" regarding searching, pruning, and the like
>is holding back the truly innovative people who might feel obligated to cling to
>the old ideas.  I think the whole current theory about "extending and reducing"
>needs to be re-thought, although I am definitely no authority on that subject.
>The Earth is not flat after all!
>
>Perhaps the next extension of your idea is to perform and utilize complete
>dynamic position evaluations to refine the searching.
>
>Congratulations to you and the others for corageously pursuing a new idea which
>perhaps may go against "current wisdom."  It is only through original innovation
>and invention that advances will be made.  Old ideas are not always the best
>ideas.
>
>Bob D.

Hello Bob,

I think you might be underestimating the commercial engines.  My suspicion
is that they have been using techniques similar to this for years.  From my
short experience with the idea it's seems obvious that it has a tremendous
amount of potential but could be getting it right is tricky.  My guess is
the commercial guys have struck the right balance and are reaping the
benefits.

BTW, Tord Romstad deserves the credit for starting my neurons along these
paths.  He's been doing this and more for quite awhile now in Gothmog and
has been more than willing to share his ideas with anyone that wanted to
discuss them.

regards,
--tom



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