Threadline
Draw one line through every cell, visiting the numbers in order. Same board for everyone, every day.
Loading today’s puzzle…
Want more?
Play 50 levels at your own pace, from small boards to big tricky ones. Or play unlimited boards in the size you like.
How to play Threadline
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.
Questions
- Is Threadline free?
- Yes. Threadline is free and runs in your browser, with nothing to install. You can play without an account; sign in with Google or Apple to keep your results and streak on every device.
- When is there a new puzzle?
- Every day at 00:00 UTC. Everyone gets the same board, so you can compare times with friends and see where you stand on today’s leaderboard.
- How does the leaderboard work?
- Fastest time wins. The clock starts when you press Start and stops when the board is solved, and every solution is checked on our server.
- Can I play more than one Threadline puzzle a day?
- Yes. Besides the daily puzzle there are 50 levels that get harder step by step, and an unlimited mode with a new board in the size you choose.