ECO Chess Codes E0 - Catalan
E00 - Neo-Catalan
1. d4 Nf6
2. c4 e6
3. g3
E01 - Catalan
1. d4 Nf6
2. c4 e6
3. g3 d5
4. Bg2
E02 - Catalan/Open Variation
1. d4 Nf6
2. c4 e6
3. g3 d5
4. Bg2 dc4
5. Qa4
E03
1. d4 Nf6
2. c4 e6
3. g3 d5
4. Bg2 dc4
5. Qa4 Nbd7
6. Qc4
E04
1. d4 Nf6
2. c4 e6
3. g3 d5
4. Bg2 dc4
5. Nf3
E05
1. d4 Nf6
2. c4 e6
3. g3 d5
4. Bg2 dc4
5. Nf3 Be7
E06 - Catalan/Closed Variation
1. d4 Nf6
2. c4 e6
3. g3 d5
4. Bg2 Be7
5. Nf3
E07
1. d4 Nf6
2. c4 e6
3. g3 d5
4. Bg2 Be7
5. Nf3 O-O
6. O-O Nbd7
E08
1. d4 Nf6
2. c4 e6
3. g3 d5
4. Bg2 Be7
5. Nf3 O-O
6. O-O Nbd7
7. Qc2
E09
1. d4 Nf6
2. c4 e6
3. g3 d5
4. Bg2 Be7
5. Nf3 O-O
6. O-O Nbd7
7. Qc2 c6
8. Nbd2
ECO Chess Codes
Chess Notation
Chess Openings