Vienna Gambit, with Max Lange Defense: Hamppe-Allgaier Gambit, Alapin Variation

An entry in the Encyclopedia of Chess Openings (ECO C25), reached after 12 half-moves: 1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. Nf3 g5 5. h4 g4 6. Ng5 d6.

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End of this line

No further variations branch from this position in our database. To explore neighbouring ideas:

↑ Go back to Vienna Gambit, with Max Lange Defense: Hamppe-Allgaier Gambit — try a different continuation
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About this opening

Vienna Gambit, with Max Lange Defense: Hamppe-Allgaier Gambit, Alapin Variation is an opening in the Encyclopedia of Chess Openings, classified under code C25. ECO group C (C00–C99) covers open games (1.e4 e5) and the French Defence, including the Ruy Lopez, Italian, Scotch and King's Gambit. This particular variation is reached after 12 half-moves from the starting position, with the move sequence 1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. Nf3 g5 5. h4 g4 6. Ng5 d6.

It belongs to the Vienna Gambit, with Max Lange Defense family. Within that family this is a level-2 branch (the Hamppe-Allgaier Gambit → Alapin Variation line). The immediate parent line is Vienna Gambit, with Max Lange Defense: Hamppe-Allgaier Gambit, transitioned via 6…d6.

The opening sequence in prose form: 1.e4 e5, 2.Nc3 Nc6, 3.f4 exf4, 4.Nf3 g5, 5.h4 g4, 6.Ng5 d6. From this position the encyclopaedia records no further canonical continuations — practical play branches into unnamed transpositions or returns to the parent line for alternative ideas.