Fill every row and column with the numbers 1 to 5 – like a Latin square.
- < >A < or > sign between cells in the same row shows which number must be larger.
- ∧ ∨∧ (up) = the cell above is smaller – ∨ (down) = the cell above is larger.
- Each number may only appear once per row and once per column.
Tip: Use the notepad button to mark possible numbers in a cell.