French Defense: Advance Variation, Main Line

The French Defense: Advance Variation, Main Line is a chess opening classified under ECO code C02 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 6 moves: 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. a3. The resulting position leaves black to move.