Puzzle Den

Number Path: One Line Through Every Square

Draw a single path from 1 through every number in order, covering every square of the grid exactly once.

About Number Path

Number Path is a Hamiltonian path puzzle, the same idea as LinkedIn's popular Zip game. It is simple to learn and very satisfying to solve.

Number Path at a glance

GenreLogic game
PriceFree, no download or sign-up
ControlsDrag
Typical game length5 to 10 minutes
LivesNone
Works onPhones, tablets and computers, in any modern browser
Daily challengeYes, the same puzzle for everyone each day

How to play Number Path

  1. Start at 1. Drag from the number 1.
  2. Visit numbers in order. Pass through 2, 3, 4 and so on.
  3. Fill every square. End on the last number.

Rules

Levels and difficulty

24 levels, growing from 4×4 to 8×8. Your progress is saved on your device, and you can replay any level you have unlocked.

Scoring

Up to 25 points per square, minus time. Daily challenge scores can be shared with friends.

Tips and strategy for Number Path

How we built and tested Number Path

Each puzzle is built from a random path that already covers every square, so a solution always exists.

Frequently asked questions

Is this LinkedIn Zip?

It uses the same kind of rules with our own puzzles and design.

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Written and tested by Puzzle Den Editorial Team

Game design and testing. The Puzzle Den team designs, builds and play-tests every game on the site, and writes and reviews each guide. We check every level generator for solvability before a game goes live.

Published 30 September 2026 · Last updated 30 September 2026 · How we build and test games