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Subject: Is it worth doing a null-move in qsearch?

Author: Jaime Benito de Valle Ruiz

Date: 09:49:45 05/18/04


I think the whole null-move idea during search was developed after it was
firstly tried in the qsearch (correct me if I'm wrong), but although I know a
bit about normal null-move, I don't know how good does it work in qsearch.
In some positions during qsearch capturing might be a bad idea, so the stand-pat
score is used instead, meaning that any other non-capture move will be tried
here (a sort of "pass"), and the qsearch doesn't go any further. The problem
with this is maybe that the oponent doesn't have any problems making a capture
in the next ply. Of course, the qsearch is there just to avoid very simple
tactical blindness and it's far from being accurate, so we cannot pretent to
cover all possibilities by extending it withough getting an explosion (maybe the
exception is the CM). I'd just like to know if any of you uses the null-move in
qsearch, allowing the oponent to try a capture as well as trying all the ones
available for one side. Is it worth?
Reagards,

Jaime



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