Chess Opening Theory/1. e4/1...c6/2. d4/2...d5/3. e5/3...c5/4. dxc5

Caro-Kann Defence - Advance Variation, Botvinnik-Carls Defence 4. dxc5 · Caro-Kann Defence - Advance Variation, Botvinnik-Carls Defence Black usually plays to undermine the weakened pawn structure here. They can choose either 4... e6 or the double-edged 4... Nc6. Theory table 4... e6 4... Nc6 References Caro-Kann Nunn's Chess Openings. 1999. John Nunn (Editor), Graham Burgess, John Emms, Joe Gallagher. 1-8574-4221-0. Modern Chess Openings: MCO-14. 1999. Nick de Firmian, Walter Korn. 0-8129-3084-3.