ECO Chess Codes E2 - Nimzo-Indian Defence
E20 - Nimzo-Indian Defense
1. d4 Nf6   
2. c4 e6   
3. Nc3 Bb4

E21 - Nimzo-Indian Defence/Three Knight's System
1. d4 Nf6   
2. c4 e6   
3. Nc3 Bb4   
4. Nf3

E22 -Nimzo-Indian Defence/Spielmann Variation
1. d4 Nf6   
2. c4 e6   
3. Nc3 Bb4   
4. Qb3

E23
1. d4 Nf6   
2. c4 e6   
3. Nc3 Bb4   
4. Qb3 c5   
5. dc5 Nc6

E24 - Nimzo-Indian Defence/Samisch Variation
1. d4 Nf6   
2. c4 e6   
3. Nc3 Bb4   
4. a3 Bc3   
5. bc3

E25 - Nimzo-Indian Defence/Open Samisch Variation
1. d4 Nf6   
2. c4 e6   
3. Nc3 Bb4   
4. a3 Bc3   
5. bc3 c5
6. f3 d5   
7. cd5

E26 - Nimzo-Indian Defence/Closed Samisch Variation
1. d4 Nf6   
2. c4 e6   
3. Nc3 Bb4   
4. a3 Bc3   
5. bc3 c5   
6. e3

E27 - Nimzo-Indian Defence/Samisch Variation
1. d4 Nf6   
2. c4 e6   
3. Nc3 Bb4   
4. a3 Bc3   
5. bc3 O-O


E28 - Nimzo-Indian Defence/Closed Samisch Variation
1. d4 Nf6   
2. c4 e6   
3. Nc3 Bb4   
4. a3 Bc3   
5. bc3 O-O   
6. e3

E29
1. d4 Nf6   
2. c4 e6   
3. Nc3 Bb4   
4. a3 Bc3   
5. bc3 O-O
6. e3 c5   
7. Bd3 Nc6
ECO Chess Codes
Chess Notation
Chess Openings

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