Sudoku Maniac

00:01
4
7
6
4
7
7
3
6
8
2
5
7
6
1
9
8
8
4
9
4
5
2
7
3
2
5
3
1
9
7
6
4
3
9
8
1
5
00:01
1
2
3
4
5
6
7
8
9
Undo
Hint
Solve