Goal
Fill every empty cell with its row × column.
Keys
- Enter or Tab
- Check, then jump to the next empty cell
- Shift + Enter
- Check, then jump back
- ↑↓←→
- Move around
- 0–9
- Type over whatever is in the cell
On a touch screen, tap a cell and use the pad that pops up.
Marks
- 12Correct. Locked in.
- 13Wrong. Stays put until you fix it.
- 12Given. Already filled for you.
- 7Row or column finished.