C42Black11 book lines continue
Classical Attack, Marshall Variation
Petrov's Defense1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6
Also known as Russian Game: Classical, Marshall Variation, Russian Game, Classical Attack, Marshall Variation, Petroff.