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Loosened trigger condition for king safety

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Reduce eval discontinuity becuase now we kick in
king safety evaluation in many more cases.

Passed both short TC:
LLR: 2.95 (-2.94,2.94) [-1.50,4.50]
Total: 8708 W: 1742 L: 1613 D: 5353

And long TC:
LLR: 2.95 (-2.94,2.94) [0.00,6.00]
Total: 6743 W: 1122 L: 990 D: 4631

bench: 6835416
This commit is contained in:
Ralph Stößer 2013-12-22 12:00:09 +01:00 • committed by Marco Costalba
parent 8aa4f3fde4
commit 899a2c033e
1 changed files with 1 additions and 2 deletions
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3
src/evaluate.cpp
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@ -640,8 +640,7 @@ Value do_evaluate(const Position& pos) {
Score score = ei.pi->king_safety<Us>(pos, ksq);
// Main king safety evaluation
if ( ei.kingAttackersCount[Them] >= 2
&& ei.kingAdjacentZoneAttacksCount[Them])
if (ei.kingAttackersCount[Them])
{
// Find the attacked squares around the king which have no defenders
// apart from the king itself