def block_number(row, column):
    """
    Determines the block number in which the given row and column numbers intersects in sudoku

    args:
    -rows - Row number
    -column - Column number

    returns: Block number
    """
    ele = str(row) + str(column)
    skeleton_matrix = [
        ['00', '01', '02', '10', '11', '12', '20', '21', '22'],
        ['03', '04', '05', '13', '14', '15', '23', '24', '25'],
        ['06', '07', '08', '16', '17', '18', '26', '27', '28'],
        ['30', '31', '32', '40', '41', '42', '50', '51', '52'],
        ['33', '34', '35', '43', '44', '45', '53', '54', '55'],
        ['36', '37', '38', '46', '47', '48', '56', '57', '58'],
        ['60', '61', '62', '70', '71', '72', '80', '81', '82'],
        ['63', '64', '65', '73', '74', '75', '83', '84', '85'],
        ['66', '67', '68', '76', '77', '78', '86', '87', '88']
    ]
    for i in skeleton_matrix:
        if ele in i:
            return skeleton_matrix.index(i)