Shikaku
Draw a rectangle around each number so its area matches. Exactly one way.
A calm Japanese logic puzzle. Drag to draw rectangles; each must hold exactly one number and have that number's area. Every cell ends up covered once. No timer, no lives, nothing to lose. Offline, five languages, free with one optional Pro unlock.
Key Features
What makes Shikaku great
Five sizes, 5×5 to 14×14
From one you finish over coffee to one that takes a while. Pinch-zoom makes the big boards genuinely playable on a phone.
No guessing in easy to hard
A solver checks each puzzle before it is ever shown to you. That is a property of the puzzle, not a promise in a description.
A half-drawn box costs nothing
Leave an unfinished rectangle on the board as a note to yourself. There is no timer and no penalty for thinking out loud.
Ready to try Shikaku?
Draw a rectangle around each number so its area matches. Exactly one way.