THE PLAYBOOK · SCBLUELAW
How to play Shikaku
Open Shikaku, check the instructions and begin a round. 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. Begin with the solo mode shown on the page. 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.
Focus on one rule
Choose one rule to keep in mind for this round. Apply it consistently rather than guessing what another version might allow. Refer to the controls when needed.
Your goal
Cover the board with non-overlapping rectangles, each containing one clue equal to its area. Keep that objective in view throughout the round. Take a moment to understand the current position.
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. Return to the rules if the result is unexpected.
A useful example
A clue 6 may occupy a 2×3 rectangle when other clues allow it. Focus on why the action is allowed, not only its outcome. Consider the next action carefully.
Watch out for this
No rectangle may contain two clues or overlap another. Check the rule before repeating the action. Watch the feedback after an action. A message can explain whether the input was accepted or whether a rule needs attention.
Common questions
When I return, what is the goal of Shikaku?
Here is the relevant explanation: Cover the board with non-overlapping rectangles, each containing one clue equal to its area.
When I return, 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 my first round, 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?
Here is the relevant explanation: No rectangle may contain two clues or overlap another.
On this playing page, what format does Shikaku offer?
Here is the relevant explanation: 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?
For clarity: The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.
