gistfile1.txt

#!/usr/bin/env python
# coding=utf-8

puzzle = [
    [8, 1, None, None, None, None, None, None, None],
    [None, None, 3, 6, None, None, None, None, None],
    [None, 7, None, None, 9, None, 2, None, None],
    [None, 5, None, None, None, 7, None, None, None],
    [None, None, None, None, 4, 5, 7, None, None],
    [None, None, None, 1, None, None, None, 3, None],
    [None, None, 1, None, None, None, None, 6, 8],
    [None, None, 8, 5, None, None, None, 1, None],
    [None, 9, None, None, None, None, 4, None, None],
]


def resolve(puzzle):
    return []


def main():
    results = resolve(puzzle)
    print 'result'
    for result in results:
        print result
        print

if __name__ == '__main__':
    main()