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🎮 About One Line

One Line is an old puzzle linked to the mathematician Euler and the famous bridges of Königsberg. You must draw the whole shape in one stroke without lifting your finger or tracing any line twice. It starts with simple shapes and gets harder.

💡 Tips to win

• Start at a dot with an odd number of lines.
• If you get stuck, try a different starting dot.
• Leave lines that split the shape until last.

🧠 What it builds

The game introduces the basics of graph theory and builds planning and spatial thinking.

❓ FAQ

Where should I start?

Usually at a dot connected to an odd number of lines.

Does every shape have a solution?

Yes, every shape in the game can be solved.

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