When you flip a switch, any light in that row gets turned on and if itâs already on, it gets turns off. Can you turn off all the bulbs? Thatâs the big question. This 1960 replica of Elwyn Berlekamp Switch Board Game awaits a solution. The game has an array of light-bulbs and switches to change the state for any row or column. What invites competition is reducing the number of light bulbs on for any initial set of bulbs turned on especially when the chances of doing so are just 1 in 100â¦Phew!! That reminds one of all the algorithm, permutation, combination, probabilityâ¦Any takers?