THE PLAYBOOK · CD12372
Rules, controls and help for Shikaku
Shikaku gives you a focused activity to play in your browser. Cover the board with non-overlapping rectangles, each containing one clue equal to its area. Keep the game area visible while you use its controls. Use the opening round to become familiar with the layout. Use the example below to understand a decision.
Solve ten 5×5 rectangle puzzles. Each clue belongs to exactly one rectangle of the stated area.
An idea for your next attempt
After a move, check what changed. Decide which rule explains the new state before acting again. Refer to the controls when needed.
Your goal
Cover the board with non-overlapping rectangles, each containing one clue equal to its area. Use the instructions to see which actions move you towards it. Start with a deliberate move.
A walkthrough of the rules
- 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.
Your inputs
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.
One way to understand the rules
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 controls nearby.
Where a round can go wrong
No rectangle may contain two clues or overlap another. Compare the situation with the worked example. After a move, check what changed. Decide which rule explains the new state before acting again.
Answers about the rules and controls
For my first round, what is the goal of Shikaku?
Cover the board with non-overlapping rectangles, each containing one clue equal to its area.
As a new player, 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?
The key detail is this: No rectangle may contain two clues or overlap another.
What format does Shikaku offer?
Solve ten 5×5 rectangle puzzles. Each clue belongs to exactly one rectangle of the stated area.
For this browser game, 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.