Shikaku

THE PLAYBOOK · SUDAANMO

Play Shikaku with the rules at hand

Take a moment with Shikaku before moving to another game. Cover the board with non-overlapping rectangles, each containing one clue equal to its area. Look at what changes after your first action. Use the opening round to become familiar with the layout. 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.

Try a more deliberate round

Compare the worked example with your own position. Use the reasoning, not an answer copied from a different board. Refer to the controls when needed.

Understand the aim

Cover the board with non-overlapping rectangles, each containing one clue equal to its area. Read that aim before choosing your first action. Review the board or playing area as it changes.

The playing sequence

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. On a smaller screen, keep the active part of the board within view. Return to the rules if the result is unexpected.

See how the rules apply

A clue 6 may occupy a 2×3 rectangle when other clues allow it. Compare this with the rule that governs the move. Take a moment to compare.

Where a round can go wrong

No rectangle may contain two clues or overlap another. Read the feedback to see why an action did not have the expected result. 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.

Common questions