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Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Bc5/4. d3/4...f5/5. Ng5/5...f4

Lucchini Gambit - Dubois Variation
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Position in Forsyth-Edwards Notation (FEN)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 f5 5. Ng5 f4
Parent: Lucchini Gambit

5...f4 · Lucchini Gambit: Dubois Variation

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Black plays 5...f4!, the critical move of the Dubois Variation (named after Serafino Dubois, an 1850s Italian master). Here Black threatens Qxg5. Most often, White will continue to fork Black's queen and rook with 6. Nf7. Otherwise, they will force Black's king to move with 6. Bf7+?, a mistake. White's strongest move here is actually h4! to reinforce their knight and stop Black's queen from moving outwards.


Theory table

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1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 f5 5.Ng5 f4

References

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v · t · e
Chess Opening Theory
1. e4 e5
Open games
3. Bb5
Spanish
3. Bc4
Italian
3. Nc3
Three knights
Other
2...Nf6
Russian
2...d6
Philidor
Other
2. f4
King's gambit
2. Nc3
Vienna
Other
1. e4 c5
Sicilian
1. e4 e6
French
1. e4 c6
Caro-Kann
1. e4 other
1. d4 d5
Closed games
1. d4 Nf6
Indian
1. d4 f5
Dutch
1. d4 ...other:
Flank
Unorthodox