Hitori tips


  • Start with easy techniques such as adjacent-triplet clusters (e.g. 5-5-5).
  • Continue with other easy techniques such as square-between-a-pair (e.g. 1-2-1).
  • Use circles to indicate squares which must remain un-shaded.
  • Always double check before shading or un-shading a number.
  • Never guess! Only make moves based on logical deductions.

Note: There is only one unique solution for each puzzle.

When solving on paper

  • Use a soft erasable pencil and a high quality eraser.

When playing on a computer

  • Use Preferences options in toolbar for a better personal playing experience.