The Sicilian Defense: Open is a chess opening classified under ECO code B32 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 4 moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4. The resulting position leaves black to move.
Resulting Position
1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4
r1bqkbnr/pp1ppppp/2n5/8/3NP3/8/PPP2PPP/RNBQKB1R b KQkq - 0 4Resulting Position