Flash player support

Due to deprecation of Flash at the end of 2020 we are converting all our games to HTML5 which is supported by all popular browsers. We are planning to complete this process before the end of 2019. In the meantime, in case you have problems enabling Flash on your browser please see these instructions

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.