Home › Openings › Caro-Kann Defense › Caro-Kann Defense: Exchange Variation Caro-Kann Defense: Exchange Variation, Bulla Attack ECO B13 · 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. g4 Related variationsCaro-Kann Defense: Exchange Variation, Rubinstein Variation Practice this opening · Play against the computer