The aim of the puzzle is to move all these plates to the right side and out.
To do so they have to be on their side so that they can slide out.
- note the right plate on the picture is on a circular indentation.
- that is the only place that you can turn the plate to its side and be able to move them.
So the aim is to turn them ALL first to their side.
To do so you have to move them back and forth (right and left) to that circular indentation at a specific order.