extern Bitboard PassedPawnMask[2][64];
extern Bitboard AttackSpanMask[2][64];
-extern const uint64_t RMult[64];
+extern uint64_t RMult[64];
extern int RShift[64];
extern Bitboard RMask[64];
extern Bitboard* RAttacks[64];
-extern const uint64_t BMult[64];
+extern uint64_t BMult[64];
extern int BShift[64];
extern Bitboard BMask[64];
extern Bitboard* BAttacks[64];