Zip

How Zip works

1. Draw one continuous path that starts on 1.
2. Pass through the numbers in order: 1, 2, 3 and so on, ending on the highest number.
3. Visit every cell exactly once, moving up, down, left or right.
4. Thick bars are walls. The path can't cross them.

Press on the 1 and drag through the grid. Drag back to undo a step, or tap any cell on your path to cut it back to that point. On a keyboard, the arrow keys extend the path. Hint shows the next few cells and tells you if you've taken a wrong turn.

A new Zip puzzle appears every day at midnight your time. Want more? Zip Unlimited has endless grids from 6×6 to 8×8 with walls.

Questions

Is this like LinkedIn's Zip?

The rules are the same. All puzzles here are original and generated by our own software, and you can play as many as you like.

Is there always exactly one path?

Yes. Our solver checks every grid and adds numbers or walls until only one path works.

What kind of puzzle is this?

Mathematicians call a path that visits every cell once a Hamiltonian path. Zip is a friendly version of the "numbered path" puzzles in puzzle magazines, like Hidato and Numbrix.