Caro-Kann Defense: Karpov Variation, Modern Variation, Ivanchuk Defense

The Caro-Kann Defense: Karpov Variation, Modern Variation, Ivanchuk Defense is a chess opening classified under ECO code B17 in the Semi-Open Games family, where Black responds to 1.e4 with something other than 1...e5, including the Sicilian Defense, Caro-Kann, and Pirc. It is reached after 5 moves: 1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Ng5 Ndf6. The resulting position leaves white to move.