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 Lucchini Gambit 5...f4 · Lucchini Gambit: Dubois Variation 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 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 f5 5.Ng5 f4 References