THE PLAYBOOK · SHANGHAIJXC
Follow the steps for 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. Treat the first round as a chance to learn the controls. 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.
Something to practise
Watch the feedback after an action. A message can explain whether the input was accepted or whether a rule needs attention. Keep the objective visible.
The purpose of your moves
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. Check the rules when you are unsure.
Making your moves
- 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.
Input guidance
Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution. Use the control method described here for this activity. A new-round button replaces the current round.
Follow the example
A clue 6 may occupy a 2×3 rectangle when other clues allow it. Your next round may have a different position, so inspect it before acting. Keep the game’s format in mind.
Pay attention to this rule
No rectangle may contain two clues or overlap another. Take a moment to reassess the position before continuing. When a decision goes wrong, compare it with the common mistake described below. Start again only when you intend to leave the current round.
Common questions
While reading the Guide, what is the goal of Shikaku?
Keep this in mind: Cover the board with non-overlapping rectangles, each containing one clue equal to its area.
While learning, how do I control Shikaku?
Keep this in mind: 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?
Here is the relevant explanation: A clue 6 may occupy a 2×3 rectangle when other clues allow it.
When I return, what should I watch out for in Shikaku?
For clarity: No rectangle may contain two clues or overlap another.
When I return, what format does Shikaku offer?
For clarity: 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?
Keep this in mind: The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.