Keep solid pawn-structure M K Wong vs Suba, 1982 (B21) Sicilian, 2.f4 and 2.d4, 65 moves, 0-1 I Cervenka vs I Sokolov, 1986 (B21) Sicilian, 2.f4 and 2.d4, 31 moves, 0-1 Tkachiev vs Portisch, 1994  (B21) Sicilian, 2.f4 and 2.d4, 28 moves, 0-1 M Manakova vs J Majdan, 2009  (B21) Sicilian, 2.f4 and 2.d4, 41 moves, 0-1 E L Ng vs B Ivanovic, 1990  (B21) Sicilian, 2.f4 and 2.d4, 40 moves, 0-1 M Grigoryan vs N Popova, 2001  (B21) Sicilian, 2.f4 and 2.d4, 38 moves, 0-1 6 games