4
fills a 2×2 rectangle
6
fills a 2×3 rectangle
2
fills a 1×2 rectangle
☝️
Each number = the size of its rectangle.
A 4 needs a rectangle covering exactly
4 cells.
▭
Drag to draw rectangles on the grid.
Every cell must be covered — no gaps, no overlaps.
✓
One solution only.
There's exactly one way to solve each puzzle.