D Ghizdavu vs Karpov, 1973  (B93) Sicilian, Najdorf, 6.f4, 57 moves, 0-1 F Olafsson vs R Byrne, 1977 (B93) Sicilian, Najdorf, 6.f4, 42 moves, 0-1 P Korzubov vs Gelfand, 1983  (B93) Sicilian, Najdorf, 6.f4, 57 moves, 0-1 Plaskett vs Gelfand, 1988  (B93) Sicilian, Najdorf, 6.f4, 34 moves, 0-1 Short vs Gelfand, 1990  (B93) Sicilian, Najdorf, 6.f4, 53 moves, 0-1 M Wahls vs Gelfand, 1991 (B93) Sicilian, Najdorf, 6.f4, 60 moves, 0-1 6 games