Trompowsky Attack: Edge Variation, Hergert Gambit

The Trompowsky Attack: Edge Variation, Hergert Gambit is a chess opening classified under ECO code A45 in the Flank Openings family, characterized by moves like 1.c4, 1.Nf3, or 1.f4, aiming to control the center indirectly. It is reached after 6 moves: 1. d4 Nf6 2. Bg5 Ne4 3. Bh4 d5 4. f3 Nf6 5. Nc3 Bf5 6. e4. The resulting position leaves black to move.