King's Gambit Declined: Falkbeer Countergambit, Pickler Gambit

The King's Gambit Declined: Falkbeer Countergambit, Pickler Gambit is a chess opening classified under ECO code C31 in the Open Games & French Defense family, beginning with 1.e4 e5 or 1.e4 e6, including the Italian Game, Ruy Lopez, and French Defense. It is reached after 4 moves: 1. e4 e5 2. f4 d5 3. exd5 c6 4. dxc6 Bc5. The resulting position leaves white to move.