From: Marco Costalba <mcostalba@gmail.com>
Date: Fri, 6 Nov 2009 15:08:39 +0000 (+0100)
Subject: IID in pv also when TT move depth is too small
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=0fdc75c0bdf1b273f080724d03fd706ebb8c17cb;hp=0fdc75c0bdf1b273f080724d03fd706ebb8c17cb

IID in pv also when TT move depth is too small

Try an internal iterative deepening not only when we don't
have a TT move but also if search depth is more then 4*OnePly
higher then TT move depth.

On some tests it seems that in around 20% of cases ttMove changes !

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
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