to chess literature include the study of world champions and extensive analysis of 19th-century chess brilliancies. His recent contributions are detailed analysis and study of the chess games of world champions – notably Bobby Fischer and Alexander Alekhine. He is the eponym of the Hübner Variation of the Nimzo-Indian Defence: 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 Nc6 6.Nf3 Bxc3+. When anti-doping tests were introduced into international chess, Hübner declared his withdrawal from the German national team. He views these tests as bureaucratic power displays that degrade the individual. In his opinion, doping in chess cannot improve the true abilities of a player, only their application. "I am always happy if my opponent's abilities can fully unfold, because then I learn more." Additionally, Hübner is known as one of the world's best xiangqi players not from China. Notable games Robert James Fischer vs. Robert Hübner, Palma de Mallorca iz 1970, Caro–Kann Defense: Breyer Variation (B10), ½–½ A dramatic game with central pawn attacks against the GM Robert James Fischer. Robert Hübner vs. Raymond Keene, Vienna (Austria) 1972, Modern Defense: King Pawn Fianchetto (B06), 1–0 After a long series of manoeuvres the White pressure on the Black king position peaks in a winning combination. Notes References External links 1948 births Living people Chess grandmasters Chess Olympiad competitors German chess players German papyrologists German chess writers Sportspeople from Cologne Chess theoreticians German male non-fiction writers