This puzzle belongs to a subgenre of logic games with real physics. You have a decent bunch of balls that should be moved to the indicated location. On their way in the labyrinth there are valves, which create, in general, that unsurpassed atmosphere of this game. It would seem the easiest way to remove them all at once, but then your balls will definitely not go where they need to! Only pointwise, meaningful work of the mind will allow you and your balls to be in the right place at the right time!
