How to Play Slitherlink

THE PLAYBOOK · ADAMMBS

How to play Slitherlink

Try Slitherlink at your own pace and keep its objective in view. Draw one closed loop whose edges match the count around every numbered cell. Look at what changes after your first action. Make your first input carefully and watch the result. Look at what changes after your first action.

Ten 4×4 loop puzzles with all cell clues shown.

Build a steady rhythm

Take enough time to read a new position. If a game has a timer, learn its controls first rather than searching for them during the round. Use the example to check your reasoning.

Your goal

Draw one closed loop whose edges match the count around every numbered cell. Keep that objective in view throughout the round. Try to explain the aim in your own words.

Step by step

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.

Controls

Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution. Keep the playing area visible while using these controls. Look at the feedback after the action.

A useful example

A 0 cell has no loop edge around it; a 3 has exactly three. Use the example as a guide rather than a substitute for reading your board. Look for the relevant detail.

Watch out for this

Several small loops are invalid even if clues match. Compare the situation with the worked example. Choose one rule to keep in mind for this round. Apply it consistently rather than guessing what another version might allow.

Common questions