Chess Openings
3810 ECO lines with main-line moves and diagrams. Start with the flagship families, or browse by volume.
Flagship openings
All lines by ECO volume
A — Flank openings
| Name | ECO | Moves |
| Dutch Defense: Classical Variation | A91 | 8 |
| Dutch Defense: Classical Variation, Blackburne Attack | A91 | 9 |
| Dutch Defense: Alekhine Variation | A92 | 12 |
| Dutch Defense: Classical Variation | A92 | 10 |
| Dutch Defense: Stonewall Variation | A92 | 13 |
| Dutch Defense: Stonewall Variation | A92 | 12 |
| Dutch Defense: Stonewall Variation, Botvinnik Variation | A93 | 13 |
| Dutch Defense: Stonewall Variation | A94 | 15 |
| Dutch Defense: Stonewall Variation | A95 | 14 |
| Dutch Defense: Stonewall Variation, Chekhover Variation | A95 | 17 |
| Dutch Defense: Classical Variation | A96 | 12 |
| Dutch Defense: Classical Variation, Buenos Aires Variation | A96 | 14 |
| Dutch Defense: Classical Variation, Huisl Variation | A96 | 14 |
| Dutch Defense: Classical Variation, Ilyin-Zhenevsky Variation | A97 | 14 |
| Dutch Defense: Classical Variation, Ilyin-Zhenevsky Variation, Winter Variation | A97 | 15 |
| Dutch Defense: Classical Variation, Ilyin-Zhenevsky Variation, Alatortsev-Lisitsyn Line | A98 | 15 |
| Dutch Defense: Classical Variation, Ilyin-Zhenevsky Variation, Modern Main Line | A99 | 15 |
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Family pages group related lines: the family head with a diagram, main continuations and every catalogued variation.