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Slitherlink: learn through an example

A focus for your next round

Watch the feedback after an action. A message can explain whether the input was accepted or whether a rule needs attention. Notice the feedback after each input.

The goal to keep in mind

Draw one closed loop whose edges match the count around every numbered cell. Keep that objective in view throughout the round. Notice how the game responds to your input.

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.

Using the playing area

Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution. Use the control method described here for this activity. Make sure you are interacting with the game rather than the surrounding page.

Follow the example

A 0 cell has no loop edge around it; a 3 has exactly three. Focus on why the action is allowed, not only its outcome. Take a moment to compare.

An important reminder

Several small loops are invalid even if clues match. Check the rule before repeating the action. After a move, check what changed. Decide which rule explains the new state before acting again.

Answers about the rules and controls

For a quick reminder, what is the goal of Slitherlink?

Here is the relevant explanation: Draw one closed loop whose edges match the count around every numbered cell.

On this playing page, how do I control Slitherlink?

The key detail is this: Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.

Before I begin, what example helps explain Slitherlink?

The key detail is this: A 0 cell has no loop edge around it; a 3 has exactly three.

Before I begin, what should I watch out for in Slitherlink?

For clarity: Several small loops are invalid even if clues match.

When I return, what format does Slitherlink offer?

For clarity: Ten 4×4 loop puzzles with all cell clues shown.

While learning, which play mode does Slitherlink use?

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

On this playing page, where should I start with Slitherlink?

For clarity: Click an edge to draw, exclude or clear it.

While reading the Guide, do I need an account or a payment for Slitherlink?

No player account or payment is needed. Game scores are recreational results, not cash prizes.

For this browser game, 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 reading the Guide, how do I report an issue with Slitherlink?

For clarity: 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.