Sicilian Defense: Moscow Variation, Dorfman Gambit

The Sicilian Defense: Moscow Variation, Dorfman Gambit is a chess opening classified under ECO code B51 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 d6 3. Bb5+ Nc6 4. O-O Bd7 5. Qe2 g6 6. e5. The resulting position leaves black to move.