00
:
00
5
6
2
1
8
8
2
6
5
1
7
1
3
9
6
2
5
3
6
2
7
5
2
6
7
1
3
4
9
9
4
7
8
1
9
1
3
5
4
2
6
5
3
9
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