4
3
7
2
8
7
3
5
7
8
6
9
7
9
4
8
1
6
8
9
1
3
2
5
5
1
7
6
8
9
1
7
28-01-2011......medium
www.daily-sudoku-puzzle.com
www.daily-sudoku-puzzle.com
www.daily-sudoku-puzzle.com
www.daily-sudoku-puzzle.com