Sicilian Defense: Nimzowitsch Variation, Main Line

The Sicilian Defense: Nimzowitsch Variation, Main Line is a chess opening classified under ECO code B29 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 6 moves: 1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. Nc3 e6 5. Nxd5 exd5 6. d4 Nc6. The resulting position leaves white to move.