Turn the rings to match colors of the olympic flag.
First: Shuffle the beads. Then : click on the arrows to turn the rings You can undo each move (button on the right) If its too hard or too easy, you can re-shuffle with the reset button on the left.
A context menu should be shown when right-clicking or, on touch devices, long-pressing in the game. This menu especially allows to play in full screen and control the volume.