Vienna gambit - Steinitz variation
1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. d3
White pushes the king's pawn to e4. Black moves the king's pawn to e5. White develops the knight to c3.
Black develops the knight to f6. White pushes the f-pawn to f4. Black advances the queen's pawn to d5.
White pushes the queen's pawn to d3.