King's Gambit Accepted - Cunningham - Euwe defence
1. e4 e5 2. f4 exf4 3. Nf3 Be7 4. Bc4 Nf6
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 develops the dark-squared bishop to e7.
White develops the light-squared bishop to c4. Black develops the knight to f6.