Fischer random chess, also known as Chess960, is a variation of the game of chess invented by the former world chess champion Bobby Fischer. Fischer announced this variation on June 19, 1996, in Buenos Aires, Argentina. Fischer random chess employs the same board and pieces as classical chess, but the starting position of the pieces on the players' home ranks is randomized, following certain rules. The random setup makes gaining an advantage through the memorization of openings impracticable; players instead must rely more on their skill and creativity over the board.
Hans-Walter Schmitt, Frankfurt 2011
The four programs Deep Sjeng, Shredder, Rybka, and Ikarus (with the programmers) at the 5th Livingston Chess960 Computer World Championship, Mainz 2009
A chess variant is a game related to, derived from, or inspired by chess. Such variants can differ from chess in many different ways.
A three-player chess variant which uses a hexagonal board
Models for the fairy chess pieces used in Capablanca chess