4
5
3
9
4
7
6
5
8
9
7
6
3
8
1
7
6
5
3
1
7
2
7
5
3
5
6
2
21-02-2015......medium
www.daily-sudoku-puzzle.com
www.daily-sudoku-puzzle.com
www.daily-sudoku-puzzle.com
www.daily-sudoku-puzzle.com