King's Gambit Accepted - Quaade gambit
1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Nc3
White plays the king's pawn to e4. Black moves the king's pawn to e5. White moves the f-pawn to f4.
Black captures on f4 with the king's pawn. White develops the knight to f3. Black advances the g-pawn to g5.
White jumps the knight to c3.