ECO D26
6 named openings and variations are classified as D26. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Queen's Gambit Accepted: Classical DefenseD261. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5
- Queen's Gambit Accepted: Classical Defense, Normal LineD261. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O
- Queen's Gambit Accepted: Classical Defense, Steinitz Variation, Development VariationD261. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O Nc6
- Queen's Gambit Accepted: Classical Defense, Steinitz Variation, Exchange VariationD261. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O cxd4
- Queen's Gambit Accepted: Classical, Furman VariationD261. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. Qe2 a6 7. dxc5 Bxc5 8. O-O Nc6 9. e4 b5 10. e5
- Queen's Gambit Accepted: Normal Variation, Traditional SystemD261. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6