Sudoku [ Difficulty level 5 ]
3
8
7
4
3
8
2
8
2
8
7
2
2
1
1
3
1
7
7
5
Solution
4
2
3
8
1
7
5
9
6
5
7
1
6
4
9
3
8
2
9
6
8
3
2
5
4
7
1
8
1
5
9
6
4
7
2
3
6
9
2
7
5
3
8
1
4
7
3
4
2
8
1
9
6
5
1
8
9
4
3
2
6
5
7
3
5
6
1
7
8
2
4
9
2
4
7
5
9
6
1
3
8
