THE PLAYBOOK · QTHCC
How to play Shikaku
Shikaku on QTHCC is organised around a clear objective: Cover the board with non-overlapping rectangles, each containing one clue equal to its area. Begin with explain your choice and use the playbook beside the game.
Ten unique 5×5 rectangle-partition puzzles.
Explain your choice
Try describing the reason for a move or action in one sentence. If the reason is unclear, revisit the rules before continuing.
Your goal
Cover the board with non-overlapping rectangles, each containing one clue equal to its area.
Step by step
- Choose a rectangle’s opposite corners.
- It must contain one clue and have the matching area.
- Click an existing rectangle to remove it.
- 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
Can you show a concrete example?
A clue 6 may occupy a 2×3 rectangle when other clues allow it.
What is included in this edition?
Ten unique 5×5 rectangle-partition puzzles.
Which controls should I use?
Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.