def convert_position(position):
    """Convert position to 'absolute' position! (B7 becomes (1, 6))"""
    letter = position[0]
    column = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J'].index(letter)
    row = int(position[1:]) - 1
    return row, column