The World Chess Championship 1984–1985 was a match between challenger Garry Kasparov and defending champion Anatoly Karpov in Moscow from 10 September 1984 to 15 February 1985 for the World Chess Championship title. After 5 months and 48 games, the match was abandoned in controversial circumstances with Karpov leading 5 wins to 3, and replayed in the World Chess Championship 1985.

Robert Hübner is a German chess grandmaster, chess writer, and papyrologist. He was one of the world's leading players in the 1970s and early 1980s.