The Edge Variation, Hergert Gambit is a variation of the Trompowsky Attack, catalogued as ECO A45. The line runs 1. d4 Nf6 2. Bg5 Ne4 3. Bh4 c6 4. Nd2 Qa5 5. c3 Nxd2 6. Qxd2 d5 7. e4, reaching the position shown below after 13 half-moves.
Both sides have pawns in the centre (White on d4 and e4, Black on d5), and one pawn capture is available, so the structure has not settled yet. Development is level at two minor pieces each. It is Black to move after seven moves.
On the Trompowsky Attack generally: ECO A45. A chess opening with 10 known variations.
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See all 2 Trompowsky Attack variations →
The Edge Variation, Hergert Gambit goes 1. d4 Nf6 2. Bg5 Ne4 3. Bh4 c6 4. Nd2 Qa5 5. c3 Nxd2 6. Qxd2 d5 7. e4. It is a variation of the Trompowsky Attack and is catalogued as ECO A45.
The Edge Variation, Hergert Gambit is ECO A45. ECO codes group openings by their move order, so nearby codes cover closely related lines of the Trompowsky Attack.
Stockfish evaluates the position after 1. d4 Nf6 2. Bg5 Ne4 3. Bh4 c6 4. Nd2 Qa5 5. c3 Nxd2 6. Qxd2 d5 7. e4 at -0.09 at depth 18, which is balanced. Engine evaluation is only a starting point — at club level the practical value of a line is mostly about whether you know its plans better than your opponent does.
Both sides have pawns in the centre (White on d4 and e4, Black on d5), and one pawn capture is available, so the structure has not settled yet. Development is level at two minor pieces each. It is Black to move.