00
:
00
4
6
3
2
7
2
4
5
7
3
6
8
5
8
3
9
2
2
8
7
6
3
7
9
5
3
8
1
9
6
4
2
5
4
6
7
9
8
8
7
5
1
9
4
Number
Corner Notes
Center Notes
Erase
Undo
Auto Notes
Check Solution
Lock Mode
1
9
2
9
3
9
4
9
5
9
6
9
7
9
8
9
9
9
Easy
Medium
Hard
Expert