Koltanowski- Lange Attack 6..nf6 f4! line A1 Koltanowski vs NN, 1945  (C55) Two Knights Defense, 26 moves, 1-0 Another Koltanowski Pure Gambit (italian gambit) Koltanowski vs NN, 1938  (C55) Two Knights Defense, 13 moves, 1-0 Koltanowski Italian Gambit main line Koltanowski vs NN, 1938  (C55) Two Knights Defense, 16 moves, 1-0 The Fahnri Gambit -an older line B. 6 f4 H Fahrni vs Spielmann, 1914  (C50) Giuoco Piano, 42 moves, 1/2-1/2 4 games