Allow razoring after a null move

After 8322 games on Russian Cluster
Mod- Orig:  1341 - 1281 - 5700 ELO +2 (+- 3) LOS 75%

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2010-10-30 15:28:33 +01:00
parent 5529706426
commit 03dd1d3c13

View file

@ -1070,7 +1070,6 @@ namespace {
&& !isCheck
&& refinedValue < beta - razor_margin(depth)
&& ttMove == MOVE_NONE
&& (ss-1)->currentMove != MOVE_NULL
&& !value_is_mate(beta)
&& !pos.has_pawn_on_7th(pos.side_to_move()))
{