@staticmethod
def __convert_move_coords_to_indexes(row, col):
    """Convert move coordinates (e.g. "A","1") to board x,y indexes."""
    row_to_x = {'A': 0, 'B': 1, 'C': 2}
    col_to_y = {'1': 0, '2': 1, '3': 2}
    return row_to_x.get(row, -1), col_to_y.get(col, -1)
