Opponent's mistake · 7...Bd6
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.Re1 Nf6 6.Nxe5 Nxe5 7.d4 Bd6 8.dxe5 Bxe5 9.Rxe5+
- e4: Takes the centre and opens lines for the queen and the f1 bishop.
- Nf3: Develops the knight and attacks the e5 pawn.
- Bb5: Attacks the knight that defends e5: White pressures the centre indirectly.