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