Ruy Lopez: Steinitz Defense Deferred, Boleslavsky Variation

The Ruy Lopez: Steinitz Defense Deferred, Boleslavsky Variation is a chess opening classified under ECO code C79 in the Open Games & French Defense family, beginning with 1.e4 e5 or 1.e4 e6, including the Italian Game, Ruy Lopez, and French Defense. It is reached after 10 moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O d6 6. Bxc6+ bxc6 7. d4 Nxe4 8. Re1 f5 9. dxe5 d5 10. Nc3. The resulting position leaves black to move.