Play Medium Sudoku Online

1
7
9
7
2
1
9
3
4
9
8
7
5
1
6
8
3
6
2
3
9
1
6
4
8
2
1
4
9
6
1
7
9
2
8
4
3
5
4
2
7
1
2
3
4
5
6
7
8
9
Go up