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Slitherlink

Also called Fences, Loop the Loop

Draw one loop along the dotted lines; each number counts the sides of its cell the loop uses.

Rules

  1. Draw one loop along the grid lines. It never branches or crosses itself.

    ✓ One loop
    ✗ Two loops

  2. A number says how many of its cell's four sides the loop runs along.

    3
    ✓ 3 sides
    2
    ✗ Not 2 sides

Example: First Loop

32332012232
The puzzle
32332012232
Solved

Playing here: Drag along the dotted lines to draw. Tap a line to cycle line, ✕ and empty.

Play First Loop