Portisch vs L Lengyel, 1964  (E41) Nimzo-Indian, 53 moves, 1/2-1/2 J Fichtl vs F Blatny, 1956  (A47) Queen's Indian, 49 moves, 1/2-1/2 Matulovic vs Suttles, 1970  (B06) Robatsch, 77 moves, 1/2-1/2 W Fuller vs L Basin, 1992  (A80) Dutch, 38 moves, 1/2-1/2 S Boyd vs T Glimbrant, 1992  (C49) Four Knights, 46 moves, 1/2-1/2 M Pein vs DeFirmian, 1995  (E44) Nimzo-Indian, Fischer Variation, 5.Ne2, 66 moves, 1/2-1/2 O Bernstein vs Smyslov, 1946  (B73) Sicilian, Dragon, Classical, 61 moves, 1/2-1/2 Kasparov vs Kiril Georgiev, 1988  (A29) English, Four Knights, Kingside Fianchetto, 78 moves, 1/2-1/2