};
// Assorted bonuses and penalties
- constexpr Score BishopPawns = S( 3, 8);
- constexpr Score CloseEnemies = S( 7, 0);
+ constexpr Score BishopPawns = S( 3, 7);
+ constexpr Score CloseEnemies = S( 8, 0);
constexpr Score CorneredBishop = S( 50, 50);
- constexpr Score Hanging = S( 62, 34);
- constexpr Score KingProtector = S( 6, 7);
- constexpr Score KnightOnQueen = S( 20, 12);
- constexpr Score LongDiagonalBishop = S( 44, 0);
- constexpr Score MinorBehindPawn = S( 16, 0);
- constexpr Score PawnlessFlank = S( 18, 94);
- constexpr Score RestrictedPiece = S( 7, 6);
- constexpr Score RookOnPawn = S( 10, 28);
- constexpr Score SliderOnQueen = S( 49, 21);
- constexpr Score ThreatByKing = S( 21, 84);
- constexpr Score ThreatByPawnPush = S( 48, 42);
- constexpr Score ThreatByRank = S( 14, 3);
- constexpr Score ThreatBySafePawn = S(169, 99);
- constexpr Score TrappedRook = S( 98, 5);
- constexpr Score WeakQueen = S( 51, 10);
- constexpr Score WeakUnopposedPawn = S( 14, 20);
+ constexpr Score Hanging = S( 69, 36);
+ constexpr Score KingProtector = S( 7, 8);
+ constexpr Score KnightOnQueen = S( 16, 12);
+ constexpr Score LongDiagonalBishop = S( 45, 0);
+ constexpr Score MinorBehindPawn = S( 18, 3);
+ constexpr Score PawnlessFlank = S( 17, 95);
+ constexpr Score RestrictedPiece = S( 7, 7);
+ constexpr Score RookOnPawn = S( 10, 32);
+ constexpr Score SliderOnQueen = S( 59, 18);
+ constexpr Score ThreatByKing = S( 24, 89);
+ constexpr Score ThreatByPawnPush = S( 48, 39);
+ constexpr Score ThreatByRank = S( 13, 0);
+ constexpr Score ThreatBySafePawn = S(173, 94);
+ constexpr Score TrappedRook = S( 96, 4);
+ constexpr Score WeakQueen = S( 49, 15);
+ constexpr Score WeakUnopposedPawn = S( 12, 23);
#undef S
kingRing[Us] |= shift<EAST>(kingRing[Us]);
kingAttackersCount[Them] = popcount(kingRing[Us] & pe->pawn_attacks(Them));
+ kingRing[Us] &= ~double_pawn_attacks_bb<Us>(pos.pieces(Us, PAWN));
kingAttacksCount[Them] = kingAttackersWeight[Them] = 0;
}
}
attackedBy[Us][Pt] |= b;
attackedBy[Us][ALL_PIECES] |= b;
- if (b & kingRing[Them] & ~double_pawn_attacks_bb<Them>(pos.pieces(Them, PAWN)))
+ if (b & kingRing[Them])
{
kingAttackersCount[Us]++;
kingAttackersWeight[Us] += KingAttackWeights[Pt];
// Bonus for restricting their piece moves
restricted = attackedBy[Them][ALL_PIECES]
- & ~attackedBy[Them][PAWN]
- & ~attackedBy2[Them]
+ & ~stronglyProtected
& attackedBy[Us][ALL_PIECES];
score += RestrictedPiece * popcount(restricted);