1
A target number appears at the top. Find two adjacent tiles — same row or column, next to each other — that combine to reach it, then tap them in order.
2
Addition and multiplication work in either order. For subtraction and division, tap the larger number first — larger − smaller, larger ÷ smaller.
3
Correct pairs clear, a new target appears, and you gain time. Puzzles start with addition and subtraction, but any operation always counts — spot a multiplication or division early and it's still a win.
4
Wrong pairs cost 5 seconds. Your first tap is always safe — it's just picking your starting number.