Rectangles: play Shikaku online
Shikaku: split the grid into rectangles, each containing exactly one number equal to its area. A tidy logic puzzle.
Play RectanglesFree, zero ads, no sign-up, on mobile and desktop.
How to play
Drag to split the grid into rectangles: each holds exactly one number, equal to its number of squares.
Example
The grid is cut into three rectangles of 4 cells, each holding its 4.
A full Easy grid
A real Easy grid (5 × 5), as you play it, and its solution. Same rule as the example above, only bigger.
What this game trains
- Visuospatial perception: picture shapes, positions and paths.
- Logical reasoning: deduce the solution from the rules, without guessing.
Levels
Easy · Hard · Expert · Hardcore — each level has its own leaderboard.
Challenge your friends
At the end of a game, send your score as a link: your friend plays exactly the same puzzle and you compare your times. There is also a daily challenge and tournaments.