One Line
Puzzle

One Line

Connect all the dots on a geometric grid using a single, continuous stroke. Players must visualize the entire path beforehand, as backtracking is prohibited in this test of spatial logic.

#Drawing#Logic#Puzzle#Brain
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About This Game

One Line Draw (One Line) is a Graph-Theory and Eulerian-Path puzzle. The technical core involves "Single-Stroke Navigation"—connecting all edges in a geometric figure without retracing any line. It is a test of Topological Visualization.

BOOM!

How to Play

Drag your finger to connect all the dots. The gameplay is Continuous Stroke Puzzle: fill the entire shape without lifting your finger. Interaction involves Node-Counting—identifying "Odd-Degree" vertices (dots with an odd number of connecting lines) to determine the starting point.

ZAP!

Tips & Tricks

Solving complex shapes hinges on "Odd-Node Identification." In graph theory, a path can only be completed in one stroke if it has Exactly 0 or 2 "Odd Nodes." If you see a dot with 3 or 5 lines coming out of it, you Must start your drawing there. Starting at an "Even Node" when odd nodes exist will always lead to a logical dead-end.

BANG!

Got Questions?

Q: Can I cross a line I already drew?
💡 A: No. The game logic treats each edge as a "Single-Use Asset." Once a path is filled, it becomes a "Solid Wall" that cannot be intersected.
Q: What is the "Red Line"?
💡 A: Some levels have a "One-Way" line (marked with an arrow). You can only pass through this edge in the specified direction, which further restricts your pathing options.