It would to an extent. The idea is that the maze has an exit, and once the water made it to the exit, it would spill out. The steady spilling out of water would

It would to an extent. The idea is that the maze has an exit, and once the water made it to the exit, it would spill out. The steady spilling out of water would create a current of flowing water all the way back to the water's source, following the "solved" path of the maze. The water didn't intelligently solve the maze, though, but rather the solution emerged out of the simple but massively parallel interactions between collisions of atoms (i.e "weak forces") and gravity.