One Line

One Stroke • All Dots • Total Focus
One Line Puzzle

Complexity born from simplicity. Can you find the single path that connects every point without lifting your finger?

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How to Play

1

Start Anywhere

Choose any dot to begin your journey. In harder levels, the starting point might be predetermined.

2

Connect the Dots

Drag your finger or mouse to create a line between dots. Every line on the pattern must be covered exactly once.

3

No Double-Backing

You cannot draw over the same line twice. Plan your route carefully to ensure you don't reach a dead end with dots left behind.

4

Level Up

As you progress, the shapes become more intricate, incorporating bridges and one-way paths to test your mental agility.

Common Questions

What makes a puzzle "unsolvable"?
According to Graph Theory, a shape can be drawn in one stroke if it has zero or exactly two "odd nodes." Every puzzle in One Line is carefully vetted to be solvable!


Can I use hints?
If you get truly stuck on a complex geometry, look for the hint button to reveal the next correct segment of the path.