Petrov - modern (Steinitz) attack
1. e4 e5 2. Nf3 Nf6 3. d4
White advances the king's pawn to e4. Black moves the king's pawn to e5. White develops the knight to f3.
Black develops the knight to f6. White plays the queen's pawn to d4.
White advances the king's pawn to e4. Black moves the king's pawn to e5. White develops the knight to f3.
Black develops the knight to f6. White plays the queen's pawn to d4.