King's Gambit Accepted - Philidor gambit
1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. h4
White advances the king's pawn to e4. Black moves the king's pawn to e5. White advances the f-pawn to f4.
Black captures on f4 with the king's pawn. White develops the knight to f3. Black plays the g-pawn to g5.
White develops the light-squared bishop to c4. Black develops the dark-squared bishop to g7. White plays the h-pawn to h4.