Sudoku

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

Hold shift to take notes.
Use mouse, arrow-keys or WASD to switch cells.
Backspace ← clears current cell.


0 : 00

There's full keyboard support

Hold shift to take notes

Backspace clears a cell

Navigate with arrow-keys or WASD