ECO D56
2 named openings and variations are classified as D56. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Queen's Gambit Declined: Lasker Defense, Russian VariationD561. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. Qc2 Nf6 10. Bd3 dxc4 11. Bxc4 c5 12. O-O Nc6 13. Rfd1 Bd7
- Queen's Gambit Declined: Lasker Defense, Teichmann VariationD561. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 h6 6. Bh4 O-O 7. e3 Ne4 8. Bxe7 Qxe7 9. Qc2