Modern Defense: Averbakh Variation Botvinnik vs Smyslov, 1958  (A42) Modern Defense, Averbakh System, 49 moves, 1-0 Modern Defense: Averbakh System. Kotov Variation Najdorf vs Robatsch, 1962  (A42) Modern Defense, Averbakh System, 18 moves, 1-0 Modern Defense: Averbakh System. Kotov Variation Timman vs Suttles, 1974  (A42) Modern Defense, Averbakh System, 49 moves, 1-0 Modern Defense: Averbakh System. Kotov Variation J Piket vs Azmaiparashvili, 2000  (A42) Modern Defense, Averbakh System, 58 moves, 1-0 4 games