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Shikaku Puzzle

Divide the grid into rectangles so each holds one number matching its area in this classic Shikaku logic puzzle.

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About Shikaku Puzzle

Shikaku is a classic Japanese logic puzzle with simple rules and deeply satisfying solutions. The board is a grid dotted with numbers, and your job is to divide it into rectangles and squares. The rule is elegant: each rectangle must contain exactly one number, and that number equals the area of the rectangle. From there, every puzzle becomes a rewarding test of logic and planning. Easy to learn but endlessly challenging, Shikaku is perfect for fans of sudoku, nonograms, and pen-and-paper logic games. Play free in your browser on desktop or mobile, no download needed.

How to play

Your goal is to divide the whole grid into rectangles and squares. Each rectangle must contain exactly one number, and that number must equal the rectangle's area (its number of cells). Click and drag to draw a rectangle. Fill the entire grid correctly to solve the puzzle.