4
4
6
7
5
1
5
3
2
4
7
1
8
9
5
6
2
1
9
7
4
6
1
8
9
7
4
5
2
7
5
3
6
05-08-2017.......schwer
www.daily-sudoku-puzzle.com
www.daily-sudoku-puzzle.com
