Use separated research counters in root_search()
authorMarco Costalba <mcostalba@gmail.com>
Sun, 7 Mar 2010 08:02:34 +0000 (10:02 +0200)
committerMarco Costalba <mcostalba@gmail.com>
Sat, 13 Mar 2010 10:00:12 +0000 (11:00 +0100)
commitc835ee88535e138a4a5870f18a1cebab96476cf7
treec9b2d48972dd201d7240fc2e30b8844aeb8fa4b9
parent7ff9678651942203639796da3fe3434d1c22e4b8
Use separated research counters in root_search()

One for failing highs and one for failing lows, this
should reduce average window size in case of positions
that fail first high and then low (or the contrary).

After ~2000 games on Joona's quad we have:

Mod - Orig: 1012- 975 (+6 elo)

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