Chess Opening Theory/1. e4/1...e6/2. d4/2...d5/3. Nc3/3...Bb4/4. e5/4...c5/5. a3/5...Bxc3/6. bxc3/6...Ne7

= French Defence, Winawer Variation = With 6... Ne7 Black continues development. Although Black's c5 Pawn is not defended, White rarely chooses this continuation dxc5, because then White's tripled pawns on the c-file are very weak and Black has an easy time regaining the pawn. White's usual continuations from this position are the aggressive Qg4, which threatens to capture Black's undefended g7 Pawn. Alternatively White can also play the solid Nf3 in order to prepare kingside castling, or they can play a4 with the aim of developing their dark-square bishop to a3.

Theory table
'''1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7'''