How to play

Split the whole grid into rectangles. Every rectangle must contain exactly one number, and its area (width × height in cells) must equal that number. Every cell ends up inside exactly one rectangle.

1. Draw — press on a cell and drag to the opposite corner of the shape you want, then let go.
2. Rules — the shape may not cover any cell twice, may not hold two numbers, and its area must match the number inside it.
3. Remove — tap a rectangle once to take it away.
4. Hint — paints one rectangle from the solution; it counts itself.
5. Win — cover every cell with legal rectangles. Each puzzle has exactly one solution.

Numbers up to 14 are common (a 3×4 or 2×7 block); long thin shapes such as 1×7 are legal when the number allows it. Add ?puzzle=7 or ?level=hard to the address to pin a board.