The pieces have an Egyptian look and mirrored sides that bounce light from a low-powered diode laser at oneanother and consequently knock each other out of the game.
Neutrons ejected from a watery surface move much more slowly than those from a rocky one, because the hydrogen nuclei in water are light enough for an exiting neutron to knock around much like one billiard ball hitting another a process that slows the neutron down.
One after another these supposedly concerned citizens walked into a knock-off solitary confinement cell furnished with a dirty toilet and television cameras.