How to Play Slitherlink

THE PLAYBOOK · PT-BUS

How to play Slitherlink

A round of Slitherlink at PT-BUS begins with understanding the objective. Draw one closed loop whose edges match the count around every numbered cell. The learning focus here is review the result, supported by the rule notes below.

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

Review the result

When a round finishes, compare what happened with the winning or scoring condition. Use that comparison to choose a better approach next time.

Your goal

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

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.

A useful example

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

Watch out for this

Several small loops are invalid even if clues match.

Common questions