ECO D07
9 named openings and variations are classified as D07. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Queen's Gambit Declined: Chigorin DefenseD071. d4 d5 2. c4 Nc6
- Queen's Gambit Declined: Chigorin Defense, Exchange VariationD071. d4 d5 2. c4 Nc6 3. cxd5 Qxd5
- Queen's Gambit Declined: Chigorin Defense, Exchange Variation, Costa's LineD071. d4 d5 2. c4 Nc6 3. cxd5 Qxd5 4. e3 e5 5. Nc3 Bb4 6. Bd2 Bxc3 7. Bxc3 exd4 8. Ne2
- Queen's Gambit Declined: Chigorin Defense, Janowski VariationD071. d4 d5 2. c4 Nc6 3. Nc3 dxc4 4. Nf3
- Queen's Gambit Declined: Chigorin Defense, Lazard GambitD071. d4 d5 2. c4 Nc6 3. Nf3 e5
- Queen's Gambit Declined: Chigorin Defense, Main LineD071. d4 d5 2. c4 Nc6 3. Nf3 Bg4
- Queen's Gambit Declined: Chigorin Defense, Main Line, Alekhine VariationD071. d4 d5 2. c4 Nc6 3. Nf3 Bg4 4. Qa4
- Queen's Gambit Declined: Chigorin Defense, Modern GambitD071. d4 d5 2. c4 Nc6 3. Nc3 dxc4 4. Nf3 Nf6
- Queen's Gambit Declined: Chigorin Defense, Tartakower GambitD071. d4 d5 2. c4 Nc6 3. Nc3 e5