Tackling connections in whatever order catches your eye tends to create dead ends — solving the most constrained pairs first usually opens up the rest of the board.
MouseInteract / Aim
Left Click / TapPrimary action
TouchFull mobile support
PPause game (where supported)
01
Start with any pair that has only one possible path available.
02
Avoid drawing a line that blocks another pair's only route when an alternate path exists for yours.
03
Most boards have more than one valid solution — if stuck, look for a reroutable pair rather than assuming it's unsolvable.
Typically no — non-crossing paths are the core constraint in this puzzle type.
Check the game screen's corner icons for a limited-use hint button, common in this genre.