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

Slitherlink tips


  • Start by solving the easy situations, such as 0’s, adjacent 0 and 3, diagonal 0 and 3, adjacent 3’s and diagonal 3’s.
  • Mark with “X” places where you know lines are not allowed.
  • Always double check before drawing a line or marking an “X”.
  • 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.
  • Highlight loop segments to check whether two loops are about to occur. To highlight a loop segment, click mouse on any of the clues belonging to the segment.