French Defense: Tarrasch Variation, Chistyakov Defense, Modern Line

The French Defense: Tarrasch Variation, Chistyakov Defense, Modern Line is a chess opening classified under ECO code C07 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 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd6 7. O-O Nf6 8. Nb3 Nc6 9. Nbxd4 Nxd4 10. Nxd4 a6. The resulting position leaves white to move.