Rat Defense: Accelerated Gurgenidze

The Rat Defense: Accelerated Gurgenidze is a chess opening classified under ECO code B06 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 3 moves: 1. e4 g6 2. d4 d6 3. Nc3 c6. The resulting position leaves white to move.