Slitherlink

How to play Slitherlink

Play Slitherlink free online. Draw a single closed loop so each number touches exactly that many edges, with a fresh daily grid.

Click or tap an edge to cycle line, cross, then empty. Drag to draw a run of edges. Contradictions are highlighted as you go.

Why players come back to Slitherlink

Each grid is thinned until only one loop satisfies it, so every clue you use is a clue you needed. Sizes rise from five by five to eight by eight.

Slitherlink strategy

Zeros and threes are where the loop is decided. Work the corners first, mark the edges you know are empty, and never let a vertex take a third line.