Implemented functions Set_val_possible_only_in_one_cell_of_col Set_val_possible_only_in_one_cell_of_row Set_val_possible_only_in_one_cell_of_square Set_val_possible_only_in_one_cell_of_board which search for each value from 1 to 9, in the postit of each cell of the board if she is the only one that could have this value from its line, column, square if it's the case it put it in the board. Also added to solve_board a call to these functions in case simple solving doesn't work.
Implemented functions Set_val_possible_only_in_one_cell_of_col Set_val_possible_only_in_one_cell_of_row Set_val_possible_only_in_one_cell_of_square Set_val_possible_only_in_one_cell_of_board which search for each value from 1 to 9, in the postit of each cell of the board if she is the only one that could have this value from its line, column, square if it's the case it put it in the board. Also added to solve_board a call to these functions in case simple solving doesn't work.