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Subject: Deep Null Extension Too Expensive?

Author: Stuart Cracraft

Date: 13:11:18 01/22/98


I had a look at the original author's article.

It does things like perform static evaluations
in the interior of the search tree which are
very, very expensive. I used his code and implemented
it pretty much verbatim in my program. The cost was
too much.

Even with limitations such as the recently posted ones
from DarkThought, it seems to me that putting the static
evaluation in the interior really prevents good use for
anything but trivial evaluation.

How about just using the difference of the material value
for both sides as the score to be used by the Deep Null
Extension when it needs a score and forgoing the static
evaluation in the interior?

--Stuart



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