How to Play Shikaku

THE PLAYBOOK · JINHUIBLIND

Try Shikaku at your own pace and keep its objective in view. Cover the board with non-overlapping rectangles, each containing one clue equal to its area. Check the relevant rule before repeating a move. Read the objective before making your first input. Look at what changes after your first action.

Solve ten 5×5 rectangle puzzles. Each clue belongs to exactly one rectangle of the stated area.

Make the controls familiar

Locate the buttons and input area before beginning a long round. Use the on-screen labels to avoid an accidental restart. Make the next step deliberately.

Your goal

Cover the board with non-overlapping rectangles, each containing one clue equal to its area. Read that aim before choosing your first action. Notice how the game responds to your input.

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. Read the example below alongside these instructions.

A useful 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. Verify the rule before continuing.

Watch out for this

No rectangle may contain two clues or overlap another. Take a moment to reassess the position before continuing. Locate the buttons and input area before beginning a long round. Use the on-screen labels to avoid an accidental restart.

Common questions

For this browser game, what is the goal of Shikaku?

Cover the board with non-overlapping rectangles, each containing one clue equal to its area.

On this playing page, how do I control Shikaku?

The key detail is this: 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?

Here is the relevant explanation: A clue 6 may occupy a 2×3 rectangle when other clues allow it.

As a new player, what should I watch out for in Shikaku?

For clarity: No rectangle may contain two clues or overlap another.

While reading the Guide, 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.