Connect matching colour dots with pipes on a 6×6 grid. Fill every single cell on the board to solve the puzzle.
Rules
Click or press-and-drag starting from a coloured dot.
Drag through empty cells (or cells already carrying that colour) to extend the pipe.
Backtrack over your own pipe to shorten it; a pipe can’t cross another colour’s pipe.
Every one of the 36 cells must be filled, with each colour’s pipe running dot-to-dot, to win.
Undo takes back one cell; tapping a colour’s dot clears that colour so you can redraw it.
A pipe can’t revisit a cell, so an early wrong turn can strand a region. The game tells you when the board can no longer be finished.
Reset restarts the same puzzle; New puzzle deals a different one.
Tips
Start with the most constrained colour — the one with the least routing options — since it locks in the fewest choices for everything else. If you get stuck, retrace a pipe back toward its dot and try a different route.