Vienna gambit - Heyde variation
1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Qf3 f5 6. d4
White pushes the king's pawn to e4. Black plays the king's pawn to e5. White develops the knight to c3.
Black develops the knight to f6. White moves the f-pawn to f4. Black moves the queen's pawn to d5.
White captures on e5 with the f-pawn. Black captures with the knight on e4. White moves the queen to f3.
Black pushes the f-pawn to f5. White moves the queen's pawn to d4.