One Line Draw

About One Line Draw

One Line Draw is a minimalist one-stroke puzzle game in which you complete a figure by tracing every line with a single, unbroken stroke. The rule is simple but demanding: choose a starting point, drag along the connected segments, and cover each line exactly once without lifting your finger or retracing a path you have already drawn. Early boards are gentle geometric shapes, but later levels add junctions, branches, and dead ends that force you to plan your route before you commit. Beneath the calm visuals sits a genuine logic problem closely tied to the classic Seven Bridges of Konigsberg: a figure can be drawn in one stroke only when it has exactly zero or two points where an odd number of lines meet. The game rewards spatial reasoning, patience, and pattern recognition, and runs instantly in any browser on desktop or mobile.

How to play One Line Draw

1. Pick a starting dot and press and hold to begin drawing your line.
2. Drag along the connected segments to trace the whole figure in one unbroken stroke.
3. Cover every line exactly once - you may pass through a dot again, but never retrace a segment you have already drawn.
4. Avoid stranding a segment behind you; if you trap yourself, the level cannot be finished from there and you must restart.
5. Complete the full pattern to clear the board and unlock the next, more complex level.

Controls

• Desktop: Click and hold the left mouse button on a starting dot, then drag along the lines to trace the shape in one continuous stroke. Release to finish; start over to retry a level.
• Mobile / tablet: Tap and hold a starting point, then drag your finger along the path without lifting. Release when the figure is complete; restart to try a different route.

One Line Draw tips & strategy

• Count the lines meeting at each dot: points with an odd number are where your stroke must start or end.
• If every point has an even number of lines, you can begin anywhere - and you will finish back at your starting dot.
• Trace the whole route with your eyes before touching the screen; committing too early is the most common way to get boxed in.
• Handle dead-end spurs and narrow branches the instant you reach their junction, since you only get one pass through each.
• Stuck on a board? Try the exact same path in reverse, or start from the opposite corner - it often unlocks the solution.
• There is no timer on the puzzles, so treat each one as a logic problem and take your time.

What makes One Line Draw fun

One Line Draw pairs a dead-simple rule with a deep logic core. Highlights include: a single, intuitive draw-and-hold control that works identically on mouse and touchscreen; a smooth difficulty curve that starts with basic shapes and builds to dense grids full of junctions and dead ends; clean, minimalist visuals with no clutter and no time pressure on early boards; instant browser play with no download, install, or sign-up; and puzzles rooted in real graph theory (Eulerian paths), so getting better genuinely sharpens spatial reasoning and route planning. Progress is stored locally in the browser, so you can pick up where you left off.