King's Gambit Accepted - MacDonnell gambit
1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. Nc3
White pushes the king's pawn to e4. Black moves the king's pawn to e5. White pushes the f-pawn to f4.
Black captures on f4 with the king's pawn. White develops the knight to f3. Black pushes the g-pawn to g5.
White develops the light-squared bishop to c4. Black moves the g-pawn to g4. White jumps the knight to c3.