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da6e53a)
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>
killers[0].move = ss->killers[0];
killers[1].move = ss->killers[1];
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;
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;
}
phasePtr = MainSearchTable;
}