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Simplify WeakUnopposedPawn #2181

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This is a functional simplification.

Moves WeakUnopposedPawn to pawns.cpp and remove piece dependency.

STC
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 8699 W: 2000 L: 1853 D: 4846
http://tests.stockfishchess.org/tests/view/5cf7721b0ebc5925cf08ee79

LTC
LLR: 2.96 (-2.94,2.94) [-3.00,1.00]
Total: 46605 W: 7969 L: 7890 D: 30746
http://tests.stockfishchess.org/tests/view/5cf7d5f70ebc5925cf08fa96
This commit is contained in:
protonspring
2019-06-09 06:28:42 -06:00
committed by Marco Costalba
parent 6ed81f09ff
commit 5935daf8a5
3 changed files with 4 additions and 10 deletions
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5
src/evaluate.cpp
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@@ -152,7 +152,6 @@ namespace {
constexpr Score ThreatBySafePawn = S(173, 94);
constexpr Score TrappedRook = S( 47, 4);
constexpr Score WeakQueen = S( 49, 15);
constexpr Score WeakUnopposedPawn = S( 12, 23);
#undef S
@@ -555,10 +554,6 @@ namespace {
score += RestrictedPiece * popcount(b);
// Bonus for enemy unopposed weak pawns
if (pos.pieces(Us, ROOK, QUEEN))
score += WeakUnopposedPawn * pe->weak_unopposed(Them);
// Find squares where our pawns can push on the next move
b = shift<Up>(pos.pieces(Us, PAWN)) & ~pos.pieces();
b |= shift<Up>(b & TRank3BB) & ~pos.pieces();