The Caro-Kann Defense begins with c6 against e4, followed by d5. Its defining strategic idea is to challenge White's center while keeping the c8-bishop outside the pawn chain.
1. e4 c6 2. d4 d5
The opening can lead to different structures. White can advance the e4-pawn, exchange in the center, develop naturally with ♘c3, or play an early f3. Black's move order is compact, but the exact position after the third and fourth moves determines the character of the game.
The central principle is simple:
The Caro-Kann is therefore not one fixed system. The same first two moves can lead to an Advance structure resembling a French Defense with the c8-bishop developed outside the chain, a Classical structure with rapid piece development, a structure with an isolated d-pawn, or an Exchange structure with symmetrical pawn formations.
The basic position is:
1. e4 c6 2. d4 d5
Black usually develops the c8-bishop before playing ... e6.
A classical development scheme is:
1. e4 c6 2. d4 d5 3. ♘c3 dxe4 4. ♘xe4 ♝f5
The bishop on f5 immediately participates in the game. Black has exchanged White's e4-pawn for the c6-pawn's pressure on the center, but White has gained a lead in development.
The trade-off is therefore clear:
A common misconception is that the Caro-Kann is passive because Black accepts a somewhat compressed position. In many main lines, Black's position is active from the opening because the c8-bishop is outside the pawn chain and the break ... c5 is available.