ECO D38
3 named openings and variations are classified as D38. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Queen's Gambit Declined: Ragozin DefenseD381. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4
- Queen's Gambit Declined: Ragozin Defense, Alekhine VariationD381. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Qa4+
- Queen's Gambit Declined: Westphalian VariationD381. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bg5 Nbd7 6. e3 c5