The clue is on the elevator door. You must put the black circles to the holes as shown in the clue.
- 1st = Tap all the black circles and put it all in the holes.
- 2nd = Put the black circles at the corner holes so it olooks like a perfect square.
- 3rd = Put 4 black circles at the lower left holes and 4 black circles at the upper right hole. If done correctly, you should have 2 blank holes on the upper left and lower right.
Elevator opens. Welcome to level 72.