Caro-Kann Defense: Exchange Variation: what should White play?

In the Caro-Kann Defense: Exchange Variation (ECO B13), White faces an early choice regarding how to develop pieces and structure the center. The top engine recommendation is c3 (evaluated at +0.09), which reinforces the central d4 pawn while preparing classical development, though the more aggressive c4 (+0.20) offers White the highest performance in recorded games at 52.4%. White also frequently selects Bb5, which remains the most popular move in the database across 7.79M positions.

Strategic choices between solid and sharp pawn play

Choosing c3 solidifies White's central foundation and has occurred in 24.8% of recorded games (1.93M games) with White scoring 48.8%. In the primary engine continuation c3 Bf5 Qb3 Qd7 Nh4 Be6, play remains strategically complex as White targets the queenside and challenges Black's light-squared bishop. Conversely, c4 transitions the game into the Panov-Botvinnik Attack structure; it is chosen in 26.5% of games (2.06M games) and engine-ranked at +0.20, featuring the illustrative line c4 Nf6 Nc3 Bg4 cxd5 Nxd5.

Piece development alternatives

The most commonly played move is Bb5, occurring in 43.2% of games (3.37M recorded) with an evaluation of +0.10 and a 46.7% score for White. The engine continuation runs Bb5 e6 O-O Bd6 Re1 Ne7, leading to quick kingside castling. Less frequent setups include Bf4, played in 4.4% of games (342K games) with an evaluation of +0.00 and the line Bf4 Bg4 Nbd2 e6 h3 Bh5, or the immediate knight hop Ne5, seen in 1.2% of encounters (90K games, eval -0.08) featuring Ne5 e6 Bb5 Bd7 Nxd7 Qxd7.