Queen's Gambit Declined: Semi-Slav, Koomen Variation
ECO D31 · 1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 dxc4 5. e3 b5 6. a4 Bb4 7. Bd2 Qe7
Related variations
- Queen's Gambit Declined: Albin Countergambit
- Queen's Gambit Declined: Exchange Variation
- Queen's Gambit Declined: Austrian Defense
- Queen's Gambit Declined: Baltic Defense
- Queen's Gambit Declined: Chigorin Defense
- Queen's Gambit Declined: Marshall Defense
- Queen's Gambit Declined: Charousek Variation
- Queen's Gambit Declined: Harrwitz Attack
- Queen's Gambit Declined: Modern Variation
- Queen's Gambit Declined: Capablanca Variation
- Queen's Gambit Declined: Ragozin Defense
- Queen's Gambit Declined: Semi-Tarrasch Defense
- Queen's Gambit Declined: Tarrasch Defense
- Queen's Gambit Declined: Vienna Variation
- Queen's Gambit Declined: Pseudo-Tarrasch Variation
- Queen's Gambit Declined: Lasker Defense
- Queen's Gambit Declined: Neo-Orthodox Variation
- Queen's Gambit Declined: Cambridge Springs Defense
- Queen's Gambit Declined: Orthodox Defense
- Queen's Gambit Declined: Anti-Tartakower Variation
- Queen's Gambit Declined: Tartakower Defense
- Queen's Gambit Declined: Zilbermints Gambit
- Queen's Gambit Declined: Queen's Knight Variation
- Queen's Gambit Declined: Alapin Variation
- Queen's Gambit Declined: Austrian Attack, Salvio Countergambit
- Queen's Gambit Declined: Janowski Variation
- Queen's Gambit Declined: Normal Defense
- Queen's Gambit Declined: Three Knights Variation
- Queen's Gambit Declined: Traditional Variation
- Queen's Gambit Declined: Barmen Variation