Korchnoi vs Petrosian, 1975  (E07) Catalan, Closed, 74 moves, 1-0 Korchnoi vs Portisch, 2004  (E07) Catalan, Closed, 49 moves, 1-0 Karpov vs A Sokolov, 1988  (D37) Queen's Gambit Declined, 51 moves, 1-0 Smyslov vs Simagin, 1966  (D37) Queen's Gambit Declined, 46 moves, 1-0 F Olafsson vs J H Donner, 1971 (D37) Queen's Gambit Declined, 42 moves, 1/2-1/2 5 games