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Learn your way around Shikaku

Practice beyond the first move

After a move, check what changed. Decide which rule explains the new state before acting again. Make the next step deliberately.

Your objective

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. Take a moment to understand the current position.

The steps to play

  1. Choose a rectangle’s opposite corners.
  2. It must contain one clue and have the matching area.
  3. Click an existing rectangle to remove it.
  4. Cover every square to finish.

Choosing and moving on screen

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. Make sure you are interacting with the game rather than the surrounding page.

Put the rules into context

A clue 6 may occupy a 2×3 rectangle when other clues allow it. Compare this with the rule that governs the move. Check the stated objective.

Notice this detail

No rectangle may contain two clues or overlap another. A different version of the game may use a different rule. Keep the stated aim separate from side details such as animation or appearance. Progress is measured by the game’s own completion or scoring rules.

Helpful answers for players

For this browser game, 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?

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

While learning, what example helps explain Shikaku?

A clue 6 may occupy a 2×3 rectangle when other clues allow it.

For this browser game, what should I watch out for in Shikaku?

Here is the relevant explanation: No rectangle may contain two clues or overlap another.

When I return, 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.

Before I begin, 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.

Where should I start with Shikaku?

Choose a rectangle’s opposite corners.

While learning, do I need an account or a payment for Shikaku?

No player account or payment is needed. Game scores are recreational results, not cash prizes.

When I return, how can I find Shikaku again?

For clarity: Use the Games list or save this game page in your browser bookmarks. The Guide is linked from the playing page.

On this playing page, how do I report an issue with Shikaku?

Keep this in mind: Use the contact form and include the game name, browser, device and the actions that led to the issue. Do not send passwords or payment details.