How to play
- Divide the grid into rectangles. Every cell goes in exactly one.
- Each rectangle holds exactly one number, and the number is its area.
- Drag from corner to corner to draw a rectangle. Tap a rectangle to remove it.
Keyboard: arrows move, space sets one corner, arrows stretch the rectangle, space again draws it. Esc cancels, Delete removes the rectangle under the cursor. Undo is Ctrl + Z, redo Ctrl + Shift + Z (⌘ on a Mac).
Learn how to solve it