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Retire implicit malus for stonewalls

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STC:
LLR: 2.96 (-2.94,2.94) [-3.00,1.00]
Total: 75864 W: 13466 L: 13437 D: 48961

LTC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 99050 W: 12472 L: 12451 D: 74127

bench: 6098474
This commit is contained in:
Stefano Cardanobile
2016-09-30 20:50:42 +02:00
committed by Marco Costalba
parent ab26c61971
commit 0162fb83c2
1 changed files with 3 additions and 4 deletions
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7
src/pawns.cpp
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@@ -37,9 +37,8 @@ namespace {
// Backward pawn penalty by opposed flag
const Score Backward[2] = { S(56, 33), S(41, 19) };
// Unsupported pawn penalty for pawns which are neither isolated or backward,
// by number of pawns it supports [less than 2 / exactly 2].
const Score Unsupported[2] = { S(17, 8), S(21, 12) };
// Unsupported pawn penalty for pawns which are neither isolated or backward
const Score Unsupported = S(17, 8);
// Connected pawn bonus by opposed, phalanx, twice supported and rank
Score Connected[2][2][2][RANK_NB];
@@ -163,7 +162,7 @@ namespace {
score -= Backward[opposed];
else if (!supported)
score -= Unsupported[more_than_one(neighbours & pawnAttacksBB[s])];
score -= Unsupported;
if (connected)
score += Connected[opposed][!!phalanx][more_than_one(supported)][relative_rank(Us, s)];