Tower of London

Inside the box you can see 6 easy-to-move wooden balls. Only - how do you get them out? A demanding packing problem with only one solution.
6 equally sized wooden balls are in the Tower of London. Of course they want to get out and shaking alone cannot do that. All balls must work with the "Liberator" to allow the first ball to "escape".
 
After you have freed the balls from the cube, there is a challenge in being able to put them back in again...

Designed by: Dr. Volker Latussek, Germany, 2017
Brand: Rombol
Material: Helvea wood and Palm wood
Please note: Illustrated information / instruction sheet included with the puzzle is written in German.