.. Three black rocks experiment

Turn the three black knobs and the rocks move. When a rock is in correct place (in the middle) the green light turns on.

One knob will move two rocks.

• Left knob moves first and third rock
• Middle knob moves first and second rock
• Right knob moves second and third rock

I suggest you reset all the knobs, first. Then the stones are all the way down.

Then experiment and try to get them all in the middle. Remember:

• Left knob moves first and third rock
• Middle knob moves first and second rock
• Right knob moves second and third rock

Reset all the knobs. Then move all of them (no matter the order) four clicks up.