Pair Paths is a connect-the-dots puzzle on a square grid. Each colour has two terminals; drag from one dot to the other to build a path that travels along grid lines and turns only at cell corners. Paths cannot cross each other or share a cell. The puzzle is finished when every pair is joined and every square belongs to exactly one path.
The header shows how many squares are filled versus the total. Undo removes the last segment you placed. Levels range from small tutorial boards to wider grids with more colours.
Worked example
On a three-by-three tutorial, two red dots sit in opposite corners. The only way to connect them without blocking the other colours is a stair-step path along the grid edges, using three squares. Planning that corridor first leaves the middle column free for the remaining pairs.
Strategy tips
Claim corners early. Dots tucked in corners have only one or two reasonable corridors; drawing those paths first prevents another colour from stealing the only route.
Watch choke points. A single cell that two colours might need becomes a decision point. If one colour has an alternate long way around, reserve the choke for the colour that needs it.
Fill the board mentally. If a region has an odd shape, count how many cells each path must consume. Paths that are too short leave isolated squares that no remaining colour can reach.
Open the level list to jump between tiers. Each puzzle has a verified solution, so every board you see is solvable without guessing.
When a colour's dots sit on opposite edges, compare the shortest Manhattan routes between them. If one route would wall off another colour entirely, take the longer path instead and keep the centre open for later pairs.
The progress bar fills as paths occupy squares; if it stalls before all dots connect, look for an isolated empty cell that no remaining colour can reach—that is a sign a path needs rerouting.