def _position_is_empty_in_board(position, board):
    """
    Checks if given position is empty ("-") in the board.

    :param position: Two-elements tuple representing a
                     position in the board. Example: (0, 1)
    :param board: Game board.

    Returns True if given position is empty, False otherwise.
    """
    return True if board[int(position[0])][int(position[1])] == "-" else False