C42White4 book lines continue
Classical Attack, Jaenisch Variation
Petrov's Defense1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. O-O Be7 8. c4
Also known as Russian Game: Classical, Jaenisch Variation, Russian Game, Classical Attack, Jaenisch Variation, Petroff.