3810 ECO lines with main-line moves and diagrams. Start with the flagship families, or browse by volume.
| Name | ECO | Moves |
|---|
| Queen's Indian Defense: Spassky System | E14 | 9 |
| Queen's Indian Defense: Spassky System | E14 | 10 |
| Queen's Indian Defense: Spassky System3 | E14 | 10 |
| Queen's Indian Defense: Spassky System3 | E14 | 18 |
| Queen's Indian Defense: Buerger Variation | E15 | 13 |
| Queen's Indian Defense: Fianchetto Variation | E15 | 7 |
| Queen's Indian Defense: Fianchetto Variation, Check Variation | E15 | 10 |
| Queen's Indian Defense: Fianchetto Variation, Check Variation, Intermezzo Line | E15 | 12 |
| Queen's Indian Defense: Fianchetto Variation, Check Variation, Modern Line | E15 | 12 |
| Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation | E15 | 8 |
| Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation, Nimzowitsch Attack | E15 | 9 |
| Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation, Quiet Line | E15 | 9 |
| Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation, Timman's Line | E15 | 9 |
| Queen's Indian Defense: Fianchetto Variation, Rubinstein Variation | E15 | 13 |
| Queen's Indian Defense: Fianchetto Variation, Sämisch Variation | E15 | 10 |
| Queen's Indian Defense: Fianchetto Variation, Traditional Line | E15 | 8 |
| Queen's Indian Defense: Capablanca Variation | E16 | 10 |
| Queen's Indian Defense: Riumin Variation | E16 | 12 |
| Queen's Indian Defense: Yates Variation | E16 | 12 |
| Queen's Indian Defense: Anti-Queen's Indian System | E17 | 11 |
| Queen's Indian Defense: Classical Variation | E17 | 11 |
| Queen's Indian Defense: Classical Variation, Polugaevsky Gambit | E17 | 15 |
| Queen's Indian Defense: Classical Variation, Taimanov Gambit | E17 | 15 |
| Queen's Indian Defense: Euwe Variation | E17 | 13 |
| Queen's Indian Defense: Fianchetto Variation, Kramnik Variation | E17 | 13 |
| Queen's Indian Defense: Opocensky Variation | E17 | 13 |
| Queen's Indian Defense: Traditional Variation | E17 | 10 |
| Queen's Indian Defense: Classical Variation, Tiviakov Defense | E18 | 14 |
| Queen's Indian Defense: Classical Variation, Traditional Variation | E18 | 13 |
| Queen's Indian Defense: Classical Variation, Traditional Variation, Nimzowitsch Line | E18 | 14 |
| Queen's Indian Defense: Classical Variation, Traditional Variation, Main Line | E19 | 17 |
| Nimzo-Indian Defense | E20 | 6 |
| Nimzo-Indian Defense: Dilworth Gambit | E20 | 7 |
| Nimzo-Indian Defense: Kmoch Variation | E20 | 7 |
| Nimzo-Indian Defense: Mikenas Attack | E20 | 7 |
| Nimzo-Indian Defense: Romanishin Variation | E20 | 7 |
| Nimzo-Indian Defense: Romanishin Variation | E20 | 11 |
| Nimzo-Indian Defense: Romanishin Variation, English Hybrid | E20 | 16 |
| Nimzo-Indian Defense: Three Knights Variation | E21 | 7 |
| Nimzo-Indian Defense: Three Knights Variation, Euwe Variation | E21 | 10 |
| Nimzo-Indian Defense: Three Knights Variation, Korchnoi Variation | E21 | 9 |
| Nimzo-Indian Defense: Three Knights Variation, Shocron Gambit | E21 | 10 |
| Nimzo-Indian Defense: Spielmann Variation | E22 | 7 |
| Nimzo-Indian Defense: Spielmann Variation, Carlsbad Variation | E23 | 14 |
| Nimzo-Indian Defense: Spielmann Variation, Romanovsky Gambit | E23 | 10 |
| Nimzo-Indian Defense: Spielmann Variation, Stahlberg Variation | E23 | 14 |
| Nimzo-Indian Defense: Spielmann Variation, Stahlberg Variation | E23 | 17 |
| Nimzo-Indian Defense: Sämisch Variation | E24 | 7 |
| Nimzo-Indian Defense: Sämisch Variation, Botvinnik Variation | E24 | 16 |
| Nimzo-Indian Defense: Sämisch Variation | E25 | 13 |
| Nimzo-Indian Defense: Sämisch Variation, Keres Variation | E25 | 15 |
| Nimzo-Indian Defense: Sämisch Variation, Romanovsky Variation | E25 | 16 |
| Nimzo-Indian Defense: Sämisch Variation | E26 | 11 |
| Nimzo-Indian Defense: Sämisch Variation, O'Kelly Variation | E26 | 12 |
| Nimzo-Indian Defense: Sämisch Variation | E27 | 10 |
| Nimzo-Indian Defense: Sämisch Variation | E28 | 11 |
| Nimzo-Indian Defense: Sämisch Variation | E29 | 14 |
| Nimzo-Indian Defense: Sämisch Variation, Capablanca Variation | E29 | 18 |
| Nimzo-Indian Defense: Leningrad Variation | E30 | 7 |
| Nimzo-Indian Defense: Leningrad Variation, Averbakh Gambit | E30 | 12 |
| Nimzo-Indian Defense: Leningrad Variation, Benoni Defense | E31 | 12 |
| Nimzo-Indian Defense: Classical Variation | E32 | 7 |
| Nimzo-Indian Defense: Classical Variation, Keres Defense | E32 | 12 |
| Nimzo-Indian Defense: Classical Variation, Vitolins-Adorjan Gambit | E32 | 12 |
| Nimzo-Indian Defense: Classical Variation, Milner-Barry Variation | E33 | 10 |
| Nimzo-Indian Defense: Classical Variation, Zurich Variation | E33 | 8 |
| Nimzo-Indian Defense: Classical Variation, Belyavsky Gambit | E34 | 14 |
| Nimzo-Indian Defense: Classical Variation, Noa Variation | E34 | 8 |
| Nimzo-Indian Defense: Classical Variation, Noa Variation | E35 | 10 |
| Nimzo-Indian Defense: Classical Variation, Noa Variation | E36 | 9 |
| Nimzo-Indian Defense: Classical Variation, Noa Variation, Botvinnik Variation | E36 | 12 |
| Nimzo-Indian Defense: Classical Variation, Noa Variation, Main Line | E36 | 12 |
| Nimzo-Indian Defense: Classical Variation, Romanishin Gambit | E36 | 12 |
| Nimzo-Indian Defense: Classical Variation, Modern Variation | E37 | 14 |
| Nimzo-Indian Defense: Classical Variation, Noa Variation | E37 | 13 |
| Nimzo-Indian Defense: Classical Variation, Noa Variation, San Remo Variation | E37 | 16 |
| Nimzo-Indian Defense: Classical Variation, Berlin Variation | E38 | 8 |
| Nimzo-Indian Defense: Classical Variation, Berlin Variation | E38 | 12 |
| Nimzo-Indian Defense: Classical Variation, Berlin Variation, Steiner Variation | E38 | 10 |
| Nimzo-Indian Defense: Classical Variation, Berlin Variation, Macieja System | E39 | 14 |
| Nimzo-Indian Defense: Classical Variation, Berlin Variation, Pirc Variation | E39 | 10 |
| Nimzo-Indian Defense: Rubinstein System | E40 | 7 |
| Nimzo-Indian Defense: Rubinstein System, Taimanov Variation | E40 | 8 |
| Nimzo-Indian Defense: Rubinstein System | E41 | 8 |
| Nimzo-Indian Defense: Rubinstein System, Hübner Variation | E41 | 14 |
| Nimzo-Indian Defense: Rubinstein System, Hübner Variation | E41 | 16 |
| Nimzo-Indian Defense: Rubinstein System, Rubinstein Variation | E42 | 9 |
| Nimzo-Indian Defense: Rubinstein System, Rubinstein Variation, Main Line | E42 | 13 |
| Nimzo-Indian Defense: Rubinstein System, Rubinstein Variation, Sherbakov Attack | E42 | 13 |
| Nimzo-Indian Defense: St. Petersburg Variation | E43 | 8 |
| Nimzo-Indian Defense: St. Petersburg Variation | E43 | 11 |
| Nimzo-Indian Defense: St. Petersburg Variation | E43 | 12 |
| Nimzo-Indian Defense: St. Petersburg Variation | E43 | 13 |
| Nimzo-Indian Defense: St. Petersburg Variation | E43 | 14 |
| Nimzo-Indian Defense: St. Petersburg Variation | E43 | 18 |
| Nimzo-Indian Defense: St. Petersburg Variation | E43 | 14 |
| Nimzo-Indian Defense: St. Petersburg Variation | E43 | 16 |
| Nimzo-Indian Defense: St. Petersburg Variation | E43 | 15 |
| Nimzo-Indian Defense: St. Petersburg Variation | E43 | 11 |
| Nimzo-Indian Defense: St. Petersburg Variation | E43 | 17 |
Family pages group related lines: the family head with a diagram, main continuations and every catalogued variation.