2 9 1 5
5 4 9 7
3 5 6
8 1 7
1 6
4 9 1
5 3 2
1 2 5 4
8 3 4 1
21-05-2018......hard
www.daily-sudoku-puzzle.com
www.daily-sudoku-puzzle.com
www.daily-sudoku-puzzle.com
www.daily-sudoku-puzzle.com