THE PLAYBOOK · XIAOANBA
How to play Shikaku
Bring your attention to one round of Shikaku. Cover the board with non-overlapping rectangles, each containing one clue equal to its area. Use the example below to understand a decision. Make your first input carefully and watch the result. Check the relevant rule before repeating a move.
Solve ten 5×5 rectangle puzzles. Each clue belongs to exactly one rectangle of the stated area.
Try a deliberate move
After a move, check what changed. Decide which rule explains the new state before acting again. Use the example to check your reasoning.
Your goal
Cover the board with non-overlapping rectangles, each containing one clue equal to its area. An attractive position is not enough unless the goal is met. Return to the instructions when a step is unclear.
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. Keep the playing area visible while using these controls. Avoid pressing the same control repeatedly while a move is being processed.
A useful example
A clue 6 may occupy a 2×3 rectangle when other clues allow it. Compare this with the rule that governs the move. Take a moment to compare.
Watch out for this
No rectangle may contain two clues or overlap another. Read the feedback to see why an action did not have the expected result. Read one step at a time and try it on the playing area. Match the instruction to the control you use.
Common questions
While learning, what is the goal of Shikaku?
Cover the board with non-overlapping rectangles, each containing one clue equal to its area.
While reading the Guide, how do I control Shikaku?
Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.
On this playing page, what example helps explain Shikaku?
A clue 6 may occupy a 2×3 rectangle when other clues allow it.
While learning, what should I watch out for in Shikaku?
No rectangle may contain two clues or overlap another.
When I return, what format does Shikaku offer?
Solve ten 5×5 rectangle puzzles. Each clue belongs to exactly one rectangle of the stated area.
When I return, which play mode does Shikaku use?
The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.