Fischer vs Benko, 1963: A brilliant attack

Fischer demolished Benko with a very sharp attack destroying blacks's Robatsch, Modern Opening, or Pirc Defense set-up using the Austrian Attack, Weiss Variation in just 21 moves with d4, e4, f4 pawn-formation in the opening. I like this game because of its similarity with the Grand Prix Attack and Fischer's f4 push as I love to move 2.f4 whenever I get the chance.