This electric chess set, devised by American architect and competitive chess player, Brent Blake, uses low-wattage transparent, coloured and clear bulbs as chess pieces, on a board formed from low power electrical sockets mounted in plexi-glass.
Instead of shape and form, colour is used to distinguish the pieces from each other — captured pieces are placed in the side sockets which are not powered, implying the message ‘lights out’ for those pieces.
Via designboom.