Chess Openings

3810 ECO lines with main-line moves and diagrams. Start with the flagship families, or browse by volume.

Flagship openings

Sicilian Defense B20
2 plies in the main line
French Defense C00
2 plies in the main line
English Opening A10
1 plies in the main line
Caro-Kann Defense B10
2 plies in the main line
Queen's Pawn Game A40
1 plies in the main line
Queen's Pawn Game A41
2 plies in the main line
Queen's Pawn Game D00
2 plies in the main line
Dutch Defense A80
2 plies in the main line
Alekhine Defense B02
2 plies in the main line
Indian Defense A45
2 plies in the main line
Zukertort Opening A04
1 plies in the main line
Zukertort Opening A05
2 plies in the main line
Zukertort Opening A06
2 plies in the main line
Scandinavian Defense B01
2 plies in the main line
Réti Opening A09
3 plies in the main line
Nimzowitsch Defense B00
2 plies in the main line
Modern Defense B06
2 plies in the main line
King's Pawn Game B00
1 plies in the main line
King's Pawn Game C20
2 plies in the main line
Van Geet Opening A00
1 plies in the main line
Bird Opening A02
1 plies in the main line
Pirc Defense B00
2 plies in the main line
Polish Opening A00
1 plies in the main line
King's Indian Attack A07
3 plies in the main line

All lines by ECO volume

A — Flank openings (817)B — Semi-open games (772)C — Open games & French (1250)D — Closed & semi-closed (614)E — Indian defenses (357)

B — Semi-open games

NameECOMoves
Sicilian Defense: Dragon Variation, Yugoslav Attack, Czerniak VariationB7720
Sicilian Defense: Dragon Variation, Yugoslav Attack, Czerniak VariationB7722
Sicilian Defense: Dragon Variation, Yugoslav Attack, Main LineB7717
Sicilian Defense: Dragon Variation, Yugoslav Attack, Main LineB7718
Sicilian Defense: Dragon Variation, Yugoslav Attack, Main LineB7719
Sicilian Defense: Dragon Variation, Yugoslav Attack, Sosonko VariationB7718
Sicilian Defense: Dragon Variation, Yugoslav AttackB7819
Sicilian Defense: Dragon Variation, Yugoslav Attack, Chinese DragonB7820
Sicilian Defense: Dragon Variation, Yugoslav Attack, Old LineB7820
Sicilian Defense: Dragon Variation, Yugoslav Attack, Topalov VariationB7823
Sicilian Defense: Dragon Variation, Yugoslav AttackB7923
Sicilian Defense: Dragon Variation, Yugoslav Attack, Soltis VariationB7924
Sicilian Defense: Scheveningen VariationB8010
Sicilian Defense: Scheveningen Variation, English Attack, with Qd2B8013
Sicilian Defense: Scheveningen Variation, Fianchetto VariationB8011
Sicilian Defense: Scheveningen Variation, Vitolins VariationB8011
Sicilian Defense: Scheveningen Variation, Keres AttackB8111
Sicilian Defense: Scheveningen Variation, Matanovic AttackB8211
Sicilian Defense: Scheveningen Variation, Tal VariationB8215
Sicilian Defense: Scheveningen Variation, Classical VariationB8311
Sicilian Defense: Scheveningen Variation, Modern VariationB8312
Sicilian Defense: Scheveningen Variation, Modern VariationB8317
Sicilian Defense: Scheveningen Variation, Modern VariationB8319
Sicilian Defense: Najdorf Variation, Scheveningen VariationB8414
Sicilian Defense: Scheveningen Variation, Classical VariationB8412
Sicilian Defense: Scheveningen Variation, Classical VariationB8414
Sicilian Defense: Scheveningen Variation, Classical Main LineB8520
Sicilian Defense: Scheveningen Variation, Classical Variation, Paulsen VariationB8516
Sicilian Defense: Scheveningen Variation, Classical Variation, Paulsen VariationB8517
Sicilian Defense: Scheveningen Variation, Classical Variation, Paulsen VariationB8519
Sicilian Defense: Sozin AttackB8611
Sicilian Defense: Sozin Attack, Flank VariationB8714
Sicilian Defense: Sozin Attack, Fischer VariationB8817
Sicilian Defense: Sozin Attack, Leonhardt VariationB8812
Sicilian Defense: Sozin Attack, Main LineB8913
Sicilian Defense: Sozin Attack, Main Line, Sherbakov VariationB8920
Sicilian Defense: Velimirovic AttackB8915
Sicilian Defense: Najdorf VariationB9010
Sicilian Defense: Najdorf Variation, Adams AttackB9011
Sicilian Defense: Najdorf Variation, Dekker GambitB9011
Sicilian Defense: Najdorf Variation, English AttackB9011
Sicilian Defense: Najdorf Variation, English AttackB9015
Sicilian Defense: Najdorf Variation, English AttackB9015
Sicilian Defense: Najdorf Variation, English AttackB9015
Sicilian Defense: Najdorf Variation, English AttackB9015
Sicilian Defense: Najdorf Variation, English Attack, Anti-EnglishB9012
Sicilian Defense: Najdorf Variation, Lipnitsky AttackB9011
Sicilian Defense: Najdorf Variation, Petronić AttackB9011
Sicilian Defense: Najdorf Variation, Yates VariationB9011
Sicilian Defense: Scheveningen Variation, Delayed Keres AttackB9013
Sicilian Defense: Scheveningen Variation, Delayed Keres Attack, Perenyi GambitB9017
Sicilian Defense: Scheveningen Variation, English Attack, with f3B9013
Sicilian Defense: Najdorf Variation, Zagreb VariationB9111
Sicilian Defense: Najdorf Variation, Opocensky VariationB9211
Sicilian Defense: Najdorf Variation, Opocensky VariationB9215
Sicilian Defense: Najdorf Variation, Opocensky Variation, Modern LineB9216
Sicilian Defense: Najdorf Variation, Opocensky Variation, Traditional LineB9216
Sicilian Defense: Najdorf Variation, Amsterdam VariationB9311
Sicilian Defense: Najdorf VariationB9411
Sicilian Defense: Najdorf Variation, Ivkov VariationB9423
Sicilian Defense: Najdorf VariationB9512
Sicilian Defense: Najdorf VariationB9613
Sicilian Defense: Najdorf Variation, Neo-Classical DefenseB9614
Sicilian Defense: Najdorf Variation, Polugaevsky VariationB9614
Sicilian Defense: Najdorf Variation, Polugaevsky Variation, Simagin LineB9619
Sicilian Defense: Najdorf Variation, Poisoned Pawn AcceptedB9718
Sicilian Defense: Najdorf Variation, Poisoned Pawn VariationB9714
Sicilian Defense: Najdorf VariationB9814
Sicilian Defense: Najdorf Variation, Browne VariationB9818
Sicilian Defense: Najdorf Variation, Goteborg VariationB9818
Sicilian Defense: Najdorf Variation, Traditional LineB9816
Sicilian Defense: Najdorf Variation, Main LineB9918

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Family pages group related lines: the family head with a diagram, main continuations and every catalogued variation.

Volume A Volume B Volume C Volume D Volume E Gambits Defenses