Connect the Squares Puzzle
Rules: connect all the squares by their colours (red to red, blue to blue). The lines cannot cross or wrap, nor can they pass through the squares.
EDIT: The black sides of the video are solid. Forgot my hypercam frames it for me. The coloured squares are pressed right up against the limits of the "paper", so obviously you can't go around.
Solution: • Connect the Squares Puzzle - Solution