old_version/solver.py
def check_blank_cells(self) -> None:
        """
        Checks if there are coordinates, which have only one permissible number.
        If so, number can be inserted.
        :return: None
        """
        self.s.changed = False
        if len(self.s.zero_positions):
            for coordinate in self.s.possible_digits_in_cells:
                if len(self.s.possible_digits_in_cells[coordinate]) == 1:
                    self.insert_and_set_changed(self.s.possible_digits_in_cells[coordinate][0], coordinate[0],
                                                coordinate[1])
        if self.s.changed:
            self.check_stack_and_solve_again()
        return None

        Checks if there are coordinates, which have only one permissible number.
        If so, number can be inserted.
        :return: None
        
Checks if there are coordinates, which have only one permissible number.
If so, number can be inserted.
Checks if there are coordinates which have only one permissible number . If so number can be inserted .
def check_blank_cells(self) -> None:
        self.s.changed = False
        if len(self.s.zero_positions):
            for coordinate in self.s.possible_digits_in_cells:
                if len(self.s.possible_digits_in_cells[coordinate]) == 1:
                    self.insert_and_set_changed(self.s.possible_digits_in_cells[coordinate][0], coordinate[0],
                                                coordinate[1])
        if self.s.changed:
            self.check_stack_and_solve_again()
        return None
def check_blank_cells ( self ) -> None : self . s . changed = False if len ( self . s . zero_positions ) : for coordinate in self . s . possible_digits_in_cells : if len ( self . s . possible_digits_in_cells [ coordinate ] ) == 1 : self . insert_and_set_changed ( self . s . possible_digits_in_cells [ coordinate ] [ 0 ] , coordinate [ 0 ] , coordinate [ 1 ] ) if self . s . changed : self . check_stack_and_solve_again ( ) return None
Checks if there are coordinates, which have only one permissible number.
Checks if there are coordinates which have only one permissible number .
"""
        Checks if there are coordinates, which have only one permissible number.
        If so, number can be inserted.
        :return: None
        """
None
self