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)

A — Flank openings

NameECOMoves
Dutch Defense: Classical VariationA918
Dutch Defense: Classical Variation, Blackburne AttackA919
Dutch Defense: Alekhine VariationA9212
Dutch Defense: Classical VariationA9210
Dutch Defense: Stonewall VariationA9213
Dutch Defense: Stonewall VariationA9212
Dutch Defense: Stonewall Variation, Botvinnik VariationA9313
Dutch Defense: Stonewall VariationA9415
Dutch Defense: Stonewall VariationA9514
Dutch Defense: Stonewall Variation, Chekhover VariationA9517
Dutch Defense: Classical VariationA9612
Dutch Defense: Classical Variation, Buenos Aires VariationA9614
Dutch Defense: Classical Variation, Huisl VariationA9614
Dutch Defense: Classical Variation, Ilyin-Zhenevsky VariationA9714
Dutch Defense: Classical Variation, Ilyin-Zhenevsky Variation, Winter VariationA9715
Dutch Defense: Classical Variation, Ilyin-Zhenevsky Variation, Alatortsev-Lisitsyn LineA9815
Dutch Defense: Classical Variation, Ilyin-Zhenevsky Variation, Modern Main LineA9915

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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