47 } board_element;  typedef
68 void print_board(const std::vector<board_element>& b) {  in print_board()
81 void print_potential_board(const std::vector<board_element>& b) {  in print_potential_board()
97 void init_board(std::vector<board_element>& b) {  in init_board()
102 void init_board(std::vector<board_element>& b, unsigned short arr[BOARD_SIZE]) {  in init_board()
109 void init_potentials(std::vector<board_element>& b) {  in init_potentials()
114 bool fixed_board(const std::vector<board_element>& b) {  in fixed_board()
121 bool in_row(const std::vector<board_element>& b, unsigned row, unsigned col, unsigned short p) {  in in_row()
128 bool in_col(const std::vector<board_element>& b, unsigned row, unsigned col, unsigned short p) {  in in_col()
135 bool in_block(const std::vector<board_element>& b, unsigned row, unsigned col, unsigned short p) {  in in_block()
144 void calculate_potentials(std::vector<board_element>& b) {  in calculate_potentials()
158 bool valid_board(const std::vector<board_element>& b) {  in valid_board()
172 bool examine_potentials(std::vector<board_element>& b, bool& progress) {  in examine_potentials()
230                    std::vector<board_element>& b,  in partial_solve()
254                     auto& new_board = const_cast<std::vector<board_element>&>(b);  in partial_solve()
266     std::vector<board_element> start_board(BOARD_SIZE);  in solve()