Chess openings · ECO C30–C39 · Updated October 10, 2026

King’s Gambit: accepted, declined and the classic trap

The King’s Gambit is the romantic opening: White offers the f-pawn for rapid development and an open f-file against Black’s king. It is rare at the top level but dangerous and fun at club level.

Starts with: 1.e4 e5 2.f4 · ECO: C30–C39

King’s Gambit Accepted

Kieseritzky-style line with ...g5

Black holds the extra pawn; White attacks the pawn chain with h4 and Ne5. Stockfish slightly prefers Black (about −0.4), but the positions are very sharp.

Trap to know: 3.fxe5?? in the declined line

2...Bc5 3.fxe5?? Qh4+ wins the rook

The bishop on c5 stops White from castling, and ...Qh4+ followed by ...Qxe4+ picks up the h1 rook (Stockfish about −3.5).

Plans

White: develop fast (Nf3, Bc4, O-O), open the f-file, attack f7.
Black: return the pawn at the right moment with ...d5, or hold it with ...g5 and accept a sharp fight.

Frequently asked questions

Is the King’s Gambit sound?

It is objectively a little risky, but very playable at club level, where it scores well because the defender must know the theory.

How should Black respond to the King’s Gambit?

Accepting with 2...exf4 is the main test; 2...Bc5 (declined) and 2...d5 (Falkbeer) are good alternatives.

What is the King’s Gambit trap?

After 2...Bc5, the natural 3.fxe5?? loses a rook to 3...Qh4+ 4.g3 Qxe4+ and 5...Qxh1.