Benko vs Korchnoi, 1962  (D40) Queen's Gambit Declined, Semi-Tarrasch, 81 moves, 1-0 Geller vs Najdorf, 1953  (B92) Sicilian, Najdorf, Opocensky Variation, 57 moves, 1-0 Najdorf vs Averbakh, 1953  (E17) Queen's Indian, 41 moves, 0-1 Tartakower vs A Gromer, 1933  (A36) English, 66 moves, 1-0 4 games