Rectangles

Rectangles is a clean and elegant logic puzzle for single-player brain teasers. The goal is simple to understand but rich in logical depth: divide the entire grid into non-overlapping rectangles, such that each rectangle contains exactly one number—and that number equals the area (i.e., the total number of cells) of the rectangle.

For example, a cell marked “6” must belong to a rectangle that covers exactly six squares—whether 1×6, 2×3, 3×2, or 6×1. Every cell in the grid must be part of one (and only one) rectangle, and no rectangle may contain more than one number.

Despite its minimal rules, Rectangles offers a wide range of challenge levels. Small grids provide quick, bite-sized logic sessions, while larger ones demand careful planning and spatial reasoning. The puzzle is always guaranteed to have a unique solution, reachable through pure deduction—no trial and error needed.

Draw lines along the grid edges to divide the grid into rectangles, such that each rectangle contains exactly one numbered square and has an area equal to the number in that square.

Click and drag from one grid corner to another, or from the center of one square to the center of another, to draw a rectangle. You can also drag along a grid line to draw (or erase) a single line segment at a time, or simply click on an individual grid edge to toggle it on or off.