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Try to prune also when approximateEval < beta
authorMarco Costalba <mcostalba@gmail.com>
Tue, 1 Dec 2009 10:48:28 +0000 (11:48 +0100)
committerMarco Costalba <mcostalba@gmail.com>
Tue, 1 Dec 2009 10:49:33 +0000 (11:49 +0100)
Now we always try to filter out moves, we will have
more wasted evaluation calls, but also more pruned
nodes.

After 786 games

Mod vs Orig +196 =413 -177 +8 ELO

Verified also against Rybka it increases score to 50-51%

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

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