4 8 5 2
5 7 3
8 6 1
1 4 7
7 2
9 3 6
3 6 9
2 9 8
3 1 6 5
19-12-2018......difficile
www.daily-sudoku-puzzle.com
www.daily-sudoku-puzzle.com
www.daily-sudoku-puzzle.com
www.daily-sudoku-puzzle.com