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Shikaku

Hard

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Play Hard Shikaku — ThePuzzleLabs

Try this Hard Shikaku puzzle on ThePuzzleLabs.

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Classic

Click a corner cell, then click another to draw a rectangle. Click a rectangle to remove it.

Solve This Puzzle?

This will fill in the complete solution. The puzzle will be marked as “solved with reveal” rather than self-solved.

Hard Shikaku — what to expect

Hard Shikaku uses 10×10 grids with numbers reaching into the teens. Boundary propagation becomes the primary technique: placing one rectangle constrains the space around it, often forcing the next placement. You need to think about chains of dependencies rather than treating each number in isolation.

Rules & Strategy →Printable Puzzles →All Difficulties →