French Defense: Winawer Variation, Alekhine Gambit, Kan Variation

The French Defense: Winawer Variation, Alekhine Gambit, Kan Variation is a chess opening classified under ECO code C15 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. Nc3 Bb4 4. Ne2 dxe4 5. a3 Bxc3+ 6. Nxc3 Nc6. The resulting position leaves white to move.