void from_fen(const std::string& fen, bool isChess960, Thread* th);
const std::string to_fen() const;
void print(Move m = MOVE_NONE) const;
void from_fen(const std::string& fen, bool isChess960, Thread* th);
const std::string to_fen() const;
void print(Move m = MOVE_NONE) const;