How to Play Shikaku

THE PLAYBOOK · 850305

How to play Shikaku

Use 850305 to play Shikaku and read its instructions on the same page. Cover the board with non-overlapping rectangles, each containing one clue equal to its area. Follow the understand the boundary approach for your next round.

Ten unique 5×5 rectangle-partition puzzles.

Understand the boundary

Check the edition notes and play mode. A local game, a computer opponent and remote multiplayer are different features.

Your goal

Cover the board with non-overlapping rectangles, each containing one clue equal to its area.

Step by step

1. Choose a rectangle’s opposite corners.
2. It must contain one clue and have the matching area.
3. Click an existing rectangle to remove it.
4. Cover every square to finish.

Controls

Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.

A useful example

A clue 6 may occupy a 2×3 rectangle when other clues allow it.

Watch out for this

No rectangle may contain two clues or overlap another.

Common questions