Surprisingly it took me less than 5 seconds to understand how to play it. It has the vibe of putting together a jigsaw puzzle, which was nice.
Bit low on the challenge side of things though. I would love o see something that would force me to make a choice, like some-kind of static element on the board that interacts with the pipes, or maybe having a little bit more pipes than I can use so that a bit of trial and error is necessary.