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D30 - 1. d4 d5 2. c4 e6 - Queen's Gambit Declined (1)
Code ECO D30 - Queen's Gambit Declined Coups: 1. d4 d5 2. c4 e6 -
D31 - 1. d4 d5 2. c4 e6 3. Nc3 - Queen's Gambit Declined: Queen's Knight Variation (2)
Queen's Gambit Declined: Queen's Knight Variation Coups: 1. d4 d5 2. c4 e6 3. Nc3 -
D32 - 1. d4 d5 2. c4 e6 3. Nc3 c5 - Tarrasch Defense (6)
Tarrasch Defense Coups: 1. d4 d5 2. c4 e6 3. Nc3 c5 -
D33 - 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 - Tarrasch Defense: Rubinstein System (1)
Tarrasch Defense: Rubinstein System Coups: 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 -
D35 - 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 - Queen's Gambit Declined: Exchange Variation (6)
Queen's Gambit Declined: Exchange Variation (D35) Coups: 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 -
D36 - 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 c6 6. Qc2 - Queen's Gambit Declined: Exchange Variation, Reshevsky Variation (1)
Queen's Gambit Declined: Exchange Variation, Reshevsky Variation (D36) Coups: 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 c6 6. Qc2 -
D37 - 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 - Queen's Gambit Declined: Three Knights Variation (10)
Queen's Gambit Declined: Three Knights Variation (D37) Coups: 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 -
D38 - 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 - Queen's Gambit Declined: Ragozin Defense (8)
Queen's Gambit Declined: Ragozin Defense (D38) Coups: 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4