This site explains Slitherlink in clear language: what the puzzle is, how the rules work, and which strategies help you draw one continuous loop without crossings or branches. It is made for players of all ages who want an approachable learning path.
Slitherlink is a loop-forming logic puzzle played on a grid of dots. Some cells contain digits 0–3 indicating how many of the four edges around the cell belong to the final loop. Your task is to choose edges so that they form one single continuous loop with no crossings and no branches.
This website is a learning resource. We summarize the rules, outline beginner-friendly strategies, and provide practice ideas you can reproduce on paper or in any preferred app. We do not host the game and we do not provide download links.
All four surrounding edges are off.
Exactly three edges around the cell are on.
In corners, 3s force lines, 0s clear lines.
Illustrations are simplified examples created for this fan guide.
When a cell reaches its count, mark remaining edges off; when it cannot reach the count without a new edge, mark that edge on.
Along a straight row of clues 1-2-1, certain edges must alternate on/off to avoid early loops.
Assume an edge and follow implications; if it creates a branch or isolated loop, the opposite holds.
Any early small cycle violates the single-loop rule; steer lines outward until the global loop forms.
Print a dot grid, place digits by hand, and practice marking edges with two symbols: bold for lines, dots for blanks. This builds muscle memory for propagation.
Create mini-puzzles focusing on a single idea: corner 3s, walls of 0s, 1-2-1 corridors. Solve quickly to lock in patterns.
Illustrative screens inspired by typical Slitherlink layouts. Images are for learning purposes.
The rules are concise and the drills are perfect for short daily practice.
Great beginner tips. “Avoid short cycles” finally clicked for me.
Clean layout and dark mode feel, just like the puzzle I play.
No. This is an independent, non-commercial fan site. We provide instructions and strategy notes only and are not affiliated with any developer or publisher.
No. We do not host game files and do not link to app stores. This site focuses on learning how to play.
Good puzzles are solvable through logic alone. If stuck, use contradiction checks instead of random guesses.
Try 6×6 or 8×8 with visible 0s and 3s, then increase difficulty as patterns become familiar.
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