| Name | ECO | Main line length |
|---|
| Alekhine Defense | B02 | 2 plies |
| Alekhine Defense: Maróczy Variation | B02 | 3 plies |
| Alekhine Defense: Krejcik Variation | B02 | 3 plies |
| Alekhine Defense: Brooklyn Variation | B02 | 4 plies |
| Alekhine Defense: Normal Variation | B02 | 4 plies |
| Alekhine Defense: Scandinavian Variation | B02 | 4 plies |
| Alekhine Defense: Mokele Mbembe | B02 | 4 plies |
| Alekhine Defense: Welling Variation | B02 | 5 plies |
| Alekhine Defense: Two Pawns Attack | B02 | 5 plies |
| Alekhine Defense | B03 | 5 plies |
| Alekhine Defense: Buckley Attack | B02 | 5 plies |
| Alekhine Defense: Sämisch Attack | B02 | 5 plies |
| Alekhine Defense: Mokele Mbembe, Modern Line | B02 | 6 plies |
| Alekhine Defense: Mokele Mbembe, Vavra Defense | B02 | 6 plies |
| Alekhine Defense: Brooklyn Variation, Everglades Variation | B02 | 6 plies |
| Alekhine Defense | B03 | 6 plies |
| Alekhine Defense: O'Sullivan Gambit | B03 | 6 plies |
| Alekhine Defense: The Squirrel | B02 | 6 plies |
| Alekhine Defense: Scandinavian Variation, Geschev Gambit | B02 | 6 plies |
| Alekhine Defense: Krejcik Variation, Krejcik Gambit | B02 | 5 plies |
| Alekhine Defense | B03 | 7 plies |
| Alekhine Defense: Steiner Variation | B02 | 7 plies |
| Alekhine Defense: Two Pawns Attack, Lasker Variation | B02 | 7 plies |
| Alekhine Defense: Two Pawns Attack, Tate Variation | B02 | 7 plies |
| Alekhine Defense: Balogh Variation | B03 | 7 plies |
| Alekhine Defense: Modern Variation | B04 | 7 plies |
| Alekhine Defense: Spielmann Gambit | B02 | 7 plies |
| Alekhine Defense: Scandinavian Variation, Myers Gambit | B02 | 7 plies |
| Alekhine Defense: Modern Variation, Alburt Variation | B04 | 8 plies |
| Alekhine Defense: Modern Variation, Larsen-Haakert Variation | B04 | 8 plies |
| Alekhine Defense: Modern Variation, Schmid Variation | B04 | 8 plies |
| Alekhine Defense: Modern Variation, Main Line | B05 | 8 plies |
| Alekhine Defense: Modern Variation, Larsen Variation | B04 | 8 plies |
| Alekhine Defense: Four Pawns Attack | B03 | 9 plies |
| Alekhine Defense: Hunt Variation | B03 | 9 plies |
| Alekhine Defense: Modern Variation, Alekhine Variation | B05 | 9 plies |
| Alekhine Defense: Modern Variation, Panov Variation | B05 | 9 plies |
| Alekhine Defense: Kmoch Variation | B02 | 9 plies |
| Alekhine Defense: Exchange Variation | B03 | 9 plies |
| Alekhine Defense: Four Pawns Attack, Fianchetto Variation | B03 | 10 plies |
| Alekhine Defense: Four Pawns Attack, Cambridge Gambit | B03 | 10 plies |
| Alekhine Defense: Four Pawns Attack, Trifunovic Variation | B03 | 10 plies |
| Alekhine Defense: Modern Variation, Flohr Variation | B05 | 10 plies |
| Alekhine Defense: Modern Variation, Vitolins Attack | B05 | 11 plies |
| Alekhine Defense: Hunt Variation, Lasker Simul Gambit | B02 | 11 plies |
| Alekhine Defense: Modern Variation, Alekhine Gambit | B03 | 11 plies |
| Alekhine Defense: Two Pawns Attack, Mikenas Variation | B02 | 12 plies |
| Alekhine Defense: Modern Variation, Keres Variation | B04 | 13 plies |
| Alekhine Defense: Four Pawns Attack, Main Line | B03 | 13 plies |
| Alekhine Defense: Hunt Variation, Matsukevich Gambit | B02 | 13 plies |
| Alekhine Defense: Hunt Variation, Mikenas Gambit | B02 | 15 plies |
| Alekhine Defense: Exchange Variation, Voronezh Variation | B03 | 17 plies |
| Alekhine Defense: Four Pawns Attack, Ilyin-Zhenevsky Variation | B03 | 17 plies |
| Alekhine Defense: Four Pawns Attack, Korchnoi Variation | B03 | 20 plies |
| Alekhine Defense: Exchange Variation, Karpov Variation | B03 | 21 plies |
| Alekhine Defense: Four Pawns Attack, Tartakower Variation | B03 | 22 plies |