Hitori

THE PLAYBOOK · SCBLUELAW

How to play Hitori

Choose a round of Hitori and settle into its rules. Shade repeated numbers while keeping black cells separated and all white cells connected. Use the example below to understand a decision. Begin with the solo mode shown on the page. Check the relevant rule before repeating a move.

Play twelve 5×5 puzzles. Any shaded starting cells remain fixed.

Notice the feedback

Watch the feedback after an action. A message can explain whether the input was accepted or whether a rule needs attention. Use the example to check your reasoning.

Your goal

Shade repeated numbers while keeping black cells separated and all white cells connected. An attractive position is not enough unless the goal is met. Notice how the game responds to your input.

Step by step

1. Click a cell to shade, mark or clear it.
2. No unshaded number may repeat in a row or column.
3. Black cells cannot share an edge.
4. Check puzzle verifies duplicates and connectivity.

Controls

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. Avoid pressing the same control repeatedly while a move is being processed.

A useful example

Two identical unshaded numbers in one row cannot both remain. Focus on why the action is allowed, not only its outcome. Take a moment to compare.

Watch out for this

Removing every duplicate can disconnect white cells. Take a moment to reassess the position before continuing. Take enough time to read a new position. If a game has a timer, learn its controls first rather than searching for them during the round.

Common questions