constexpr Bitboard Center = (FileDBB | FileEBB) & (Rank4BB | Rank5BB);
constexpr Bitboard KingFlank[FILE_NB] = {
- QueenSide, QueenSide, QueenSide,
+ QueenSide ^ FileDBB, QueenSide, QueenSide,
CenterFiles, CenterFiles,
- KingSide, KingSide, KingSide
+ KingSide, KingSide, KingSide ^ FileEBB
};
// Threshold for lazy and space evaluation
constexpr Score CloseEnemies = S( 6, 0);
constexpr Score CorneredBishop = S( 50, 50);
constexpr Score Hanging = S( 52, 30);
- constexpr Score HinderPassedPawn = S( 4, 0);
+ constexpr Score HinderPassedPawn = S( 8, 0);
constexpr Score KingProtector = S( 6, 6);
constexpr Score KnightOnQueen = S( 21, 11);
constexpr Score LongDiagonalBishop = S( 22, 0);
constexpr Score MinorBehindPawn = S( 16, 0);
constexpr Score Overload = S( 13, 6);
- constexpr Score PawnlessFlank = S( 20, 80);
+ constexpr Score PawnlessFlank = S( 19, 84);
constexpr Score RookOnPawn = S( 8, 24);
constexpr Score SliderOnQueen = S( 42, 21);
constexpr Score ThreatByKing = S( 23, 76);
assert(!(pos.pieces(Them, PAWN) & forward_file_bb(Us, s + Up)));
- bb = forward_file_bb(Us, s) & pos.pieces(Them);
- score -= HinderPassedPawn * popcount(bb);
+ if (forward_file_bb(Us, s) & pos.pieces(Them))
+ score -= HinderPassedPawn;
int r = relative_rank(Us, s);
int w = PassedDanger[r];