Introduce beta counters to order moves at ply one
authorMarco Costalba <mcostalba@gmail.com>
Mon, 15 Dec 2008 21:13:42 +0000 (22:13 +0100)
committerMarco Costalba <mcostalba@gmail.com>
Mon, 15 Dec 2008 21:13:42 +0000 (22:13 +0100)
commitc831b0054426df008278bb09db2541f7db25c293
tree973865c8a95cc078ffbf7ae51ee9707e06581287
parent5b853c9be6bdcc21ad3b1d4192178ceb97073258
Introduce beta counters to order moves at ply one

Instead of number of searched nodes use the number of
opponent beta-cutoff occurred under the move subtree.

After 570 games 1+0 we have: +150 =288 -132 (+11 ELO)

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
src/search.cpp