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Play Lineloop (Slitherlink) online: rules and tips

Previously: Slitherlink

Draw one closed, unbranched loop around the clues. Explore the rules below, then practise Lineloop in the HubbardGames Library.

An account is needed to play and save your progress.

Draw one closed, unbranched loop around the clues.

How to play Lineloop

  • A clue counts how many of that cell's four edges are used by the loop. A 0 rules out all four; a 3 uses three.
  • Every point touched by the loop has exactly two lines, so the route cannot stop, branch, cross or form a second loop.
  • Tap an edge to cycle blank, line and X. Crosses are optional notes: a complete correct loop finishes without every unused edge marked.

Your first useful move

A zero rules out all four edges around its cell. At each dot, a loop can use either zero or two edges, so an existing line often forces its continuation.

Playing on HubbardGames

Open a Library board to find this game’s controls. The how-to-play button keeps the rules close by while you solve, so you can check a detail without leaving the puzzle.

Choose your difficulty

The Library shows the available difficulty levels for this game. Choose a board that suits you, then return for another when you want more practice.

Can I practise without affecting the league?

Yes. Choose a puzzle from the Library to practise this game. Library practice does not add league points. You can return to an unfinished puzzle later.

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