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Count all weak squares in the king ring with a single popcount

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Passed STC:
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 26966 W: 4993 L: 4745 D: 17228
http://tests.stockfishchess.org/tests/view/599e798a0ebc5916ff64aa8c

and LTC:
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 39570 W: 5104 L: 4857 D: 29609
http://tests.stockfishchess.org/tests/view/599ee5230ebc5916ff64aabe

Bench: 5965302
This commit is contained in:
Stéphane Nicolet 2017-08-25 23:50:11 +02:00 • committed by Marco Costalba
parent 5ef94eb970
commit 92c39522b1
1 changed files with 2 additions and 2 deletions
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4
src/evaluate.cpp
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@ -439,8 +439,8 @@ namespace {
// the quality of the pawn shelter (current 'score' value). // the quality of the pawn shelter (current 'score' value).
kingDanger = kingAttackersCount[Them] * kingAttackersWeight[Them] kingDanger = kingAttackersCount[Them] * kingAttackersWeight[Them]
+ 102 * kingAdjacentZoneAttacksCount[Them] + 102 * kingAdjacentZoneAttacksCount[Them]
+ 201 * popcount(kingOnlyDefended) + 191 * popcount(kingOnlyDefended | undefended)
+ 143 * (popcount(undefended) + !!pos.pinned_pieces(Us)) + 143 * !!pos.pinned_pieces(Us)
- 848 * !pos.count<QUEEN>(Them) - 848 * !pos.count<QUEEN>(Them)
- 9 * mg_value(score) / 8 - 9 * mg_value(score) / 8
+ 40; + 40;