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 7 moves: 1. d4 Nf6 2. Bg5 Ne4 3. Bh4 c6 4. Nd2 Qa5 5. c3 Nxd2 6. Qxd2 d5 7. e4. The resulting position leaves black to move.