Positional pressure after ...Ba6 U Boensch vs Benjamin, 1988  (E15) Queen's Indian, 56 moves, 0-1 The board too small for two white queens Karpov vs Korchnoi, 1994  (E12) Queen's Indian, 72 moves, 0-1 Extraordinary sacrifice 11...Rxe2!! A Raykhman vs T Heinemann, 2016  (E15) Queen's Indian, 20 moves, 0-1 Grade AA tactics. I Rabinovich vs Alekhine, 1920  (E43) Nimzo-Indian, Fischer Variation, 39 moves, 0-1 Karpov's great defence and counter-attack Kasparov vs Karpov, 1986  (E12) Queen's Indian, 58 moves, 0-1 5 games