Cheaoss (Chaos + Chess) is a mind-bending game with chess-like mechanics. Each player has a set of pieces in 3 or more colours. Each square of the board is also coloured. The movement of the pieces is determined by the combination of colours, and different for each game. Pieces on their own colour are royal; a player loses if they have no royal pieces remaining. There are three boards... a beginner's board with three colours (3 different piece types), a standard board (7 piece types), and an advanced board for masochists (11 piece types).