How to Play:

1. Every empty cell must be covered by exactly one rectangle—no gaps, no overlaps.
2. Each rectangle must contain exactly one number.
3. The number inside a rectangle must equal the total number of squares covered by that rectangle.
4. Rectangles can be any width or height (1×n or n×1 or n×m).
5. Tap and drag to draw a rectangle, or tap cells to select them.
6. Start with numbers that have few possible rectangles.
7. For example, if you see '2', it could be a 1×2 or 2×1 rectangle only.
8. Eliminate possibilities as you go—each rectangle placed reduces options for neighbors.
9. The board is solved when every cell is covered by exactly one rectangle.