How to Play Shikaku

THE PLAYBOOK · GYHUAXIANG

Choose a round of Shikaku and settle into its rules. Cover the board with non-overlapping rectangles, each containing one clue equal to its area. Choose a clear next step rather than rushing through the instructions. Keep the instructions close while learning this activity. Keep the game area visible while you use its controls.

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. Keep the objective visible.

Your goal

Cover the board with non-overlapping rectangles, each containing one clue equal to its area. The feedback beside the game helps you follow the round. Review the board or playing area as it changes.

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. Read a button’s label before selecting it. Use the visible help when you are unsure of the next input.

A useful example

A clue 6 may occupy a 2×3 rectangle when other clues allow it. Use the example as a guide rather than a substitute for reading your board. Consider the next action carefully.

Watch out for this

No rectangle may contain two clues or overlap another. A different version of the game may use a different rule. Watch the feedback after an action. A message can explain whether the input was accepted or whether a rule needs attention.

Common questions

What is the goal of Shikaku?

The key detail is this: Cover the board with non-overlapping rectangles, each containing one clue equal to its area.

How do I control Shikaku?

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

For a quick reminder, what example helps explain Shikaku?

The key detail is this: A clue 6 may occupy a 2×3 rectangle when other clues allow it.

Before I begin, what should I watch out for in Shikaku?

Keep this in mind: No rectangle may contain two clues or overlap another.

For a quick reminder, what format does Shikaku offer?

The key detail is this: Solve ten 5×5 rectangle puzzles. Each clue belongs to exactly one rectangle of the stated area.

For my first round, which play mode does Shikaku use?

For clarity: The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.