Petrov - modern attack - Trifunovic variation
1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Bd6 6. O-O O-O 7. c4 Bxe5
White moves the king's pawn to e4. Black advances the king's pawn to e5. White develops the knight to f3.
Black develops the knight to f6. White pushes the queen's pawn to d4. Black captures with the knight on e4.
White develops the light-squared bishop to d3. Black advances the queen's pawn to d5. White captures with the knight on e5.
Black develops the dark-squared bishop to d6. White castles kingside. Black castles kingside.
White advances the c-pawn to c4. Black captures with the dark-squared bishop on e5.