The King's Gambit Accepted arises after 1.e4 e5 2.f4 exf4. ECO code: C33.

Black accepts the offered pawn. The critical question is whether Black can hold the f4-pawn while developing, or whether White's initiative and open lines provide sufficient compensation. The main continuation is 3.Nf3, after which Black chooses between ...g5 (Classical), ...d6 (Fischer Defence), ...d5 (Abbazia/Modern), ...Be7 (Cunningham), ...Nf6 (Schallopp), and many other systems. The KGA leads to some of the sharpest and most tactical positions in all of chess.