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