+ constexpr Color Them = (Us == WHITE ? BLACK : WHITE);
+ constexpr Bitboard ShelterMask =
+ Us == WHITE ? make_bitboard(SQ_A2, SQ_B3, SQ_C2, SQ_F2, SQ_G3, SQ_H2)
+ : make_bitboard(SQ_A7, SQ_B6, SQ_C7, SQ_F7, SQ_G6, SQ_H7);
+ constexpr Bitboard StormMask =
+ Us == WHITE ? make_bitboard(SQ_A3, SQ_C3, SQ_F3, SQ_H3)
+ : make_bitboard(SQ_A6, SQ_C6, SQ_F6, SQ_H6);