How to play
Fill the grid so every row and every column contains each number exactly once (1 to 4 on a 4×4 grid, 1 to 5 on a 5×5, and so on).
- The thick lines mark pens. Each pen shows a target and a sign.
- + adds the numbers in the pen, × multiplies them.
- − and ÷ pens have two squares: take the bigger number minus (or divided by) the smaller.
- A pen with one square just tells you its number. Numbers may repeat inside a pen, as long as they are in different rows and columns.
- Tap a square, then a number. Notes lets you pencil in small numbers. Each puzzle has exactly one answer.
4×4 on Monday and Tuesday, 5×5 midweek and Sunday, 6×6 on Friday and Saturday.
A new puzzle appears every day at midnight. Solve it daily to build your streak.