Opponent's mistake · 6...Qe7
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 exd4 6.Re1 Qe7 7.Nxd4 Nxd4 8.Qxd4 f5 9.Nc3 c5 10.Qd5 a6 11.Qxf5
- 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.