kate/BadFish
1
0
Fork 0
mirror of https://github.com/sockspls/badfish synced 2025-04-29 08:13:08 +00:00
Code Issues Releases Wiki Activity

Set captureThreshold according to static evaluation

Browse source 
Consider negative captures as good if
still enough to reach beta.

After 7502 games:
Mod vs Orig 1225 - 1158 - 5119 ELO +3 (+- 4.5)

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2011-12-08 13:48:18 +01:00
parent da6e53a436
commit 6e05055f06
1 changed files with 5 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
src/movepick.cpp
View file

@ -88,11 +88,14 @@ MovePicker::MovePicker(const Position& p, Move ttm, Depth d, const History& h,
killers[0].move = ss->killers[0];
killers[1].move = ss->killers[1];
// Consider sligtly negative captures as good if at low
// depth and far from beta.
// Consider sligtly negative captures as good if at low depth and far from beta
if (ss && ss->eval < beta - PawnValueMidgame && d < 3 * ONE_PLY)
captureThreshold = -PawnValueMidgame;
// Consider negative captures as good if still enough to reach beta
else if (ss && ss->eval > beta)
captureThreshold = beta - ss->eval;
phasePtr = MainSearchTable;
}