Queen's Gambit Declined: Albin Countergambit, Fianchetto Variation, Bf5 Line

The Queen's Gambit Declined: Albin Countergambit, Fianchetto Variation, Bf5 Line is a chess opening classified under ECO code D09 in the Closed & Semi-Closed Games family, arising from 1.d4 d5, including the Queen's Gambit, Slav Defense, and related systems. It is reached after 5 moves: 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Bf5. The resulting position leaves white to move.