Shikaku, also called Rectangles, is a logic puzzle about cutting a grid into pieces. Divide the whole grid into rectangles so that every rectangle holds exactly one number, and the number is its area: a 6 is a rectangle of six squares, two by three or one by six. On PeerPuzzles you draw each rectangle by dragging across the squares. New to it? Start with the rules, which solve one of the game’s own puzzles step by step, or play a small one right here.
Shikaku
Topics
- Shikaku TechniquesEvery Shikaku technique on its own page, from rectangles that fit only one way to squares only one number can reach, each shown on the same 12×12 puzzle from the game.
Guides
- Shikaku for Beginners: Start HereNew to Shikaku? Follow this path: the rules, your first 7×7, shapes that fit one way, six small warm-ups with answers, and when to move up.
- Shikaku Rules: How to Play (With Examples)How to play Shikaku (Rectangles): the three rules, what breaks them, one of the game's 7×7 puzzles solved step by step, and where to start in any grid.
- How to Solve Shikaku: 3 Techniques That WorkThree Shikaku techniques, from rectangles that fit only one way to squares only one number can reach, how often the game's levels need each, and a 10×10 from the game solved in stages.
- Shikaku Tips: 8 Tricks to Solve FasterEight Shikaku tips, measured on the game's 150 levels: start with numbers like 5 and 7, work in from the edges, let each rectangle squeeze its neighbours, and look for overlap.
- 6 Shikaku Mistakes That Break Your PuzzleStuck on a Shikaku, or found a number with nowhere to go? These six mistakes cause most broken grids. How to spot each one, and how to recover.