Sicilian Defense: Alapin Variation, Barmen Defense, Modern Line

The Sicilian Defense: Alapin Variation, Barmen Defense, Modern Line is a chess opening classified under ECO code B22 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 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4. The resulting position leaves white to move.