Struggling with this one! Is that a motor lying half submerged in the middle of the water? Does it play a role in moving the target assembly? How?
Very ingenious! But this one relies a lot on luck - there's so much that can go wrong even with the right moves. It's the balls, i think, they introduce an enormous degree of uncertainty.
@trids I don't think there's much luck, it's just that you need to push the balls with the right force. I can finish it nearly every time.