No-Lift One Line — 100 one-stroke puzzles that teach planning
No-Lift One Line is now live — 100 one-stroke tracing puzzles, then endless beyond.
How it works:
- Press a dot and drag through every line in one unbroken stroke. Don't lift, don't go over a line twice.
- Lift your finger before the shape is done and it resets — it really is one line. Drag backward over the last dot to fix a wrong turn mid-stroke.
- A learning ramp: easy levels glow to show where to begin. From the middle on, the glow fades and finding the right starting point becomes the puzzle. Progress saves locally — close the tab, come back tomorrow, same level.
The deliberate design choice: no timer. These are planning puzzles — a wrong early move locks you into a dead end, so the skill is choosing the route, not racing a clock. A blocked move just wobbles; nothing punishes a wrong turn.
Best for ages 4-7. It's a gentle first taste of a famous maths puzzle — the Bridges of Königsberg. The why is in One-line puzzles for kids: planning, disguised as a doodle.