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Remove condition on killers in history pruning 

Now allows main killer to be history prune.

STC:
LLR: 2.94 (-2.94,2.94) [-3.00,1.00]
Total: 15852 W: 2910 L: 2781 D: 10161

LTC:
LLR: 2.96 (-2.94,2.94) [-3.00,1.00]
Total: 56428 W: 7610 L: 7537 D: 41281

Bench: 8032058
pull/776/merge
VoyagerOne 2016-08-27 13:21:06 -04:00 committed by Marco Costalba
parent 6aa9308f08
commit 2731bbaf6b
1 changed files with 0 additions and 1 deletions
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src/search.cpp
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@ -935,7 +935,6 @@ moves_loop: // When in check search starts from here
// Countermoves based pruning
if ( predictedDepth < 3 * ONE_PLY
&& move != ss->killers[0]
&& (!cmh || (*cmh )[moved_piece][to_sq(move)] < VALUE_ZERO)
&& (!fmh || (*fmh )[moved_piece][to_sq(move)] < VALUE_ZERO)
&& (!fmh2 || (*fmh2)[moved_piece][to_sq(move)] < VALUE_ZERO || (cmh && fmh)))