Slitherlink
Draw one closed loop · each number says how many of its four edges the loop uses. A pure edge-deduction puzzle
Draw one closed loop · each number says how many of its four edges the loop uses. A pure edge-deduction puzzle
About Slitherlink
Slitherlink is an edge-deduction logic puzzle · you draw a single closed loop along the grid lines so that each number touches exactly that many of the loop edges.
How a round works. Toggle the line segments between dots. Each numbered cell must have exactly that many of its four sides drawn, and the segments must join into one single closed loop with no branches.
Part of Logic Puzzles. Slitherlink is both its own game and a tab inside the Logic Puzzles hub, so you can play it on its own or alongside the related games.
Part of PlayMemorize, a passion project from Christoffer De Geer. It runs entirely in your browser.
New game videos on YouTube
FAQ
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What does Slitherlink train?
Slitherlink trains pure logical deduction · chaining local edge constraints into one global closed loop. -
How do I play Slitherlink?
Toggle the line segments between dots. Each numbered cell must have exactly that many of its four sides drawn, and the segments must join into one single closed loop with no branches. -
How is Slitherlink related to Logic Puzzles?
Slitherlink is one of the games inside the Logic Puzzles hub. It also stands on its own here, with the hub still able to play it. -
Can MemPi help me study and practice this game?
Yes! Click MemPi in the header or on the game board to summon him. He observes the board, thinks out loud, and can demonstrate moves or guide you through tricky steps.