ECO Chess Codes D1 - Queen's Gambit Declined Slav Defence
D10 - Queen's Gambit Declined/Slav Defence
1. d4 d5   
2. c4 c6

D11     
1. d4 d5   
2. c4 c6   
3. Nf3

D12
1. d4 d5   
2. c4 c6   
3. Nf3 Nf6   
4. e3 Bf5

D13 - Queen's Gambit Declined/Slav Defence/ Exchange Variation
1. d4 d5   
2. c4 c6   
3. Nf3 Nf6   
4. cd5 cd5

D14
1. d4 d5   
2. c4 c6   
3. Nf3 Nf6   
4. cd5 cd5   
5. Bf4 Bf5

D15      Queen's Gambit Declined, Slav Defence
1. d4 d5   
2. c4 c6   
3. Nf3 Nf6   
4. Nc3

D16 - Queen's Gambit Declined, Slav Defence Dutch Variation
1. d4 d5   
2. c4 c6   
3. Nf3 Nf6   
4. Nc3 dc4   
5. a4

D17
1. d4 d5   
2. c4 c6   
3. Nf3 Nf6   
4. Nc3 dc4   
5. a4 Bf5

D18
1. d4 d5   
2. c4 c6   
3. Nf3 Nf6  
4. Nc3 dc4   
5. a4 Bf5   
6. e3

D19
1. d4 d5   
2. c4 c6   
3. Nf3 Nf6   
4. Nc3 dc4   
5. a4 Bf5   
6. e3 e6
7. Bc4 Bb4   
8. O-O O-O   
9. Qe2

ECO Chess Codes
Chess Notation
Chess Openings

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