M C Machius vs D Rajkovic, 1987  (E30) Nimzo-Indian, Leningrad, 12 moves, 0-1 Y Kruppa vs M I Ivanov, 2002 (E30) Nimzo-Indian, Leningrad, 41 moves, 0-1 Shabalov vs Kaidanov, 2011 (E30) Nimzo-Indian, Leningrad, 36 moves, 0-1 V Neverov vs Shimanov, 2012 (E30) Nimzo-Indian, Leningrad, 60 moves, 0-1 V Georgiev vs Leko, 2012 (E30) Nimzo-Indian, Leningrad, 28 moves, 0-1 S Martinovic vs H Stevic, 2013 (E30) Nimzo-Indian, Leningrad, 57 moves, 0-1 6 games