Fill the grid with rectangles.

• The grid must be completely covered by non-overlapping rectangles.
• Some cells have a number — the rectangle covering that cell must have exactly that many cells.
• One unique solution; no guessing needed.

Tap a cell to start a rectangle, then tap another cell to define the opposite corner. Tap a placed piece to remove it. Fill the whole grid to win.

Start with cells that have size-1 clues (they must be 1×1 pieces). Then look for clues that only fit one rectangle shape in the remaining space.