16 explicit bFen(std::string
const& fs);
26 operator std::string() const& {
return const_cast<std::string const&
>(m_fen); }
bFen(bFen const &)=default
bFen & operator=(bFen &&)=delete
friend std::ostream & operator<<(std::ostream &os, bFen const &f)
bFen & operator=(bFen const &)=delete