Vim Sudoku
Undo (Ctrl+Z, U)
00:08
8
9
6
7
5
4
1
2
2
3
6
8
9
7
7
1
2
3
8
6
5
6
8
9
7
5
6
6
2
5
4
8
7
3
2
8
6
8
7
3
4
2
5
2
5
8
1
2
3
4
5
6
7
8
9
Congratulations
You completed the puzzle in
!