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Learn the rules of Slitherlink

Bring this focus to a round

Keep the stated aim separate from side details such as animation or appearance. Progress is measured by the game’s own completion or scoring rules. Keep the objective visible.

What you are aiming for

Draw one closed loop whose edges match the count around every numbered cell. Read that aim before choosing your first action. Take a moment to understand the current position.

Making your moves

  1. Click an edge to draw, exclude or clear it.
  2. Count the four edges around each cell.
  3. Do not branch or form separate loops.
  4. Check puzzle verifies every clue and loop connectivity.

How to interact with the game

Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution. On a smaller screen, keep the active part of the board within view. Read the example below alongside these instructions.

See how the rules apply

A 0 cell has no loop edge around it; a 3 has exactly three. Your next round may have a different position, so inspect it before acting. Choose a deliberate next step.

Keep this in mind

Several small loops are invalid even if clues match. Compare the situation with the worked example. Read one step at a time and try it on the playing area. Match the instruction to the control you use.

A few questions answered

When I return, what is the goal of Slitherlink?

Draw one closed loop whose edges match the count around every numbered cell.

For my first round, how do I control Slitherlink?

For clarity: Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.

What example helps explain Slitherlink?

For clarity: A 0 cell has no loop edge around it; a 3 has exactly three.

While reading the Guide, what should I watch out for in Slitherlink?

The key detail is this: Several small loops are invalid even if clues match.

On this playing page, what format does Slitherlink offer?

Here is the relevant explanation: Ten 4×4 loop puzzles with all cell clues shown.

For a quick reminder, which play mode does Slitherlink use?

The key detail is this: The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.

While learning, where should I start with Slitherlink?

The key detail is this: Click an edge to draw, exclude or clear it.

For my first round, do I need an account or a payment for Slitherlink?

The key detail is this: No player account or payment is needed. Game scores are recreational results, not cash prizes.

On this playing page, how can I find Slitherlink again?

Here is the relevant explanation: Use the Games list or save this game page in your browser bookmarks. The Guide is linked from the playing page.

While learning, how do I report an issue with Slitherlink?

Keep this in mind: Use the contact form and include the game name, browser, device and the actions that led to the issue. Do not send passwords or payment details.