How to play
- Draw one loop along the lines between the dots. It can’t cross itself or branch.
- A number says how many of its square’s four sides the loop uses. Blank squares can use any number.
- Tap between two dots to draw a line. Tap again for ×, and once more to clear it. Drag along the dots to draw several lines.
Keyboard: arrows move between dots. Shift + arrow draws or erases a line and moves along it. Alt + arrow marks or clears ×. Ctrl or ⌘ + Z undoes, add Shift to redo.
Learn the logic behind it
Today’s Slitherlink
Hard puzzle of the week
Play unlimited Slitherlink