Shikaku - September 19, 2026 (Easy)

Draw rectangles to cover the whole grid. Each rectangle holds one number, and its area must equal that number.

1. Click a number, then click the cell in the opposite corner to draw its rectangle.
2. The number tells you the rectangle's size: width × height must equal it. A 6 needs a 6-cell rectangle, like 2×3.
3. Rectangles can't overlap, and together they must cover every cell.
4. A correct rectangle gets a colored border; a wrong one turns red. Drawing a new rectangle over an old one replaces it.