Free online puzzles

Number path online

Play number path right here with Threadline: no sign-up, nothing to install. Pick a difficulty and get a brand-new puzzle every time.

Board size

Number path every day

Every day there’s one Threadline puzzle that everyone plays, with a leaderboard, streaks and an archive of past days.

How to play number path

Threadline is a number path puzzle: a single line fills the whole board and passes the numbers in order.

Start at 1 and draw one line that visits the numbers in order and passes through every cell exactly once. The line ends on the last number and can’t cross the thick walls.

Tips

  • Corners and cells boxed in by walls have only two ways out, so the line has to pass through them in one fixed way. Draw those parts first.
  • Don’t leave a pocket of cells behind: if the line can only get into an area once, it can never come back out to finish.

Want more techniques? Read the strategy guide.

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