ECO D09
4 named openings and variations are classified as D09. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Queen's Gambit Declined: Albin Countergambit, Fianchetto VariationD091. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3
- Queen's Gambit Declined: Albin Countergambit, Fianchetto Variation, Be6 LineD091. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Be6
- Queen's Gambit Declined: Albin Countergambit, Fianchetto Variation, Bf5 LineD091. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Bf5
- Queen's Gambit Declined: Albin Countergambit, Fianchetto Variation, Bg4 LineD091. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Bg4