HOW TO PLAY

1. On a 4 by 4 grid use the numbers 1 to 4, on a 5 by 5 grid 1 to 5, and so on.
2. Every number appears once in each row and once in each column.
3. The thick lines make cages. The little label says what the numbers in the cage must make: 7+ means they add up to 7, 12× means they multiply to 12.
4. 2− means one number minus the other is 2, and 3÷ means one divided by the other is 3. These cages always have 2 squares, in either order.
5. A cage with one square and no sign is a free number: just write it in!
6. Tap a square, then a number. Turn on ✏️ Notes to jot down small maybe-numbers.
7. Solve it without hints for 3 stars ⭐⭐⭐. Every puzzle has exactly one answer.

SOLVED!