Allgaier Gambit - 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ng5

Allgaier Gambit (King’s Gambit)

The Allgaier Gambit is an opening variation in chess.

It involves a certain level of risk and requires a strong understanding of positional play.

This particular gambit is a derivative of the King’s Gambit (C39), initiated with the moves 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ng5 

The Allgaier Gambit arises from the following move order: 4.h4 g4 5.Ng5, with the intent of playing 5…h6 6.Nxf7.

The Allgaier Gambit Move Order

The Allgaier Gambit is expressed in a unique move order: 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ng5

It begins with 1.e4 e5, setting the stage for a highly strategic and complex game of chess.

This move order is common to many chess openings and seeks to control the center of the board.

The second move is 2.f4, which is the King’s Gambit, attempting to disrupt the opponent’s control of the center.

The move, 2…exf4, is the accepted King’s Gambit.

Next, we see 3.Nf3, a typical developing move, attacking the pawn on e5. In response, Black plays 3…g5, defending the pawn and laying the foundation for the Allgaier Gambit.

Allgaier Gambit - 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ng5
Allgaier Gambit – 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ng5

Key Moves in the Allgaier Gambit

The first significant move of the Allgaier Gambit is 4.h4, attacking Black’s pawn structure on the kingside.

This is where the gambit derives its name, differentiating itself from other variations of the King’s Gambit.

In response, Black often plays 4…g4, pushing the g pawn forward and attacking the knight on f3.

This move escalates the tension on the board, setting the stage for the potential sacrificial idea inherent in the Allgaier Gambit.

White then plays 5.Ng5, disregarding the threat to the knight and setting up for the core of the Allgaier Gambit’s tactical sequence.

This is the pivotal moment that defines the Allgaier Gambit.

The Knight Sacrifice

The Allgaier Gambit is perhaps best known for its risky knight sacrifice on f7. After 5.Ng5, White intends to continue with 5…h6 6.Nxf7.

This move sequence involves a deliberate sacrifice of the knight to disrupt Black’s kingside and potentially achieve a swift checkmate.

However, this knight sacrifice is widely considered unsound, meaning that it doesn’t necessarily lead to a clear advantage for White, especially against well-prepared opponents.

The Allgaier Gambit in Practice

It’s important to note that the Allgaier Gambit, while fascinating and potentially exciting, is not commonly seen in top-level competitive play.

This is mainly due to the gambit’s unsound nature; it can be easily countered by a well-prepared opponent.

However, the Allgaier Gambit could serve as an effective surprise weapon in casual games, particularly against less experienced players who may struggle to find the best responses to the gambit’s aggressive moves.

Evaluation of the Allgaier Gambit

The Allgaier Gambit is generally evaluated at around -1.50 to -1.80 for white.

Continuation lines might include:

5… h6 6. Nxf7 Kxf7 7. d4 f3 8. gxf3 Be7 9. Bc4+ d5 10. Bxd5+ Kg7 11. O-O Bxh4 12. Nc3 Nf6 13. f4 c5 14. dxc5 Nc6 15. b4 Nxb4 16. Bb2 Kh7 17. Qd4 Nxc2 18. Qd3 Nxa1 19. Bxa1 

5… h6 6. Nxf7 Kxf7 7. Bc4+ d5 8. Bxd5+ Ke8 9. d4 Nf6 10. Nc3 Nxd5 11. Nxd5 f3 12. gxf3 Be6 13. Nf4 Bf7 14. e5 Nc6 15. c3 Rg8 16. e6 Qe7 17. d5 

5… h6 6. Nxf7 Kxf7 7. Nc3 d5 8. d4 f3 9. gxf3 Be7 10. Qd2 dxe4 11. Bc4+ Kg7 12. Qf4 Qf8 13. fxe4 Qxf4 14. Bxf4 Nc6 15. O-O-O 

5… h6 6. Nxf7 Kxf7 7. d4 f3 8. Nc3 Be7 9. Bc4+ Kg7 10. gxf3 Bxh4+ 11. Ke2 c6 12. Qg1 d5 13. Bd3 Bg5 14. Bxg5 gxf3+ 15. Kxf3 Qxg5 16. Rh5 Bg4+ 17. Qxg4 Qxg4+ 18. Kxg4 Nf6+ 19. Kh4 Nxh5 

King’s Gambit Accepted: Allgaier Gambit | Chess Opening traps


The Allgaier Gambit is a unique and daring opening strategy. Its defining sequence of moves, 4.h4 g4 5.Ng5 with the intent of 5…h6 6.Nxf7, illustrates the tactical creativity and risk-taking spirit inherent in the game of chess.

While it’s not typically utilized in high-level tournament play due to its unsound knight sacrifice, it offers a wealth of strategic lessons.

It encourages players to take calculated risks, to seize the initiative, and to surprise the opponent.

Despite its shortcomings, the Allgaier Gambit stands as a shining example of the complexity and intrigue that makes chess an enduring and globally beloved game.

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