King's Gambit Accepted - bishop's gambit - Bogolyubov variation
1. e4 e5 2. f4 exf4 3. Bc4 Nf6 4. Nc3
White plays the king's pawn to e4. Black pushes 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 light-squared bishop to c4. Black develops the knight to f6.
White develops the knight to c3.