♞ Chess1

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
Zukertort Opening: Kingside FianchettoA042
Zukertort Opening: Lisitsyn GambitA043
Zukertort Opening: Lisitsyn Gambit DeferredA045
Zukertort Opening: Pirc InvitationA042
Zukertort Opening: Polish DefenseA042
Zukertort Opening: Queen's Gambit InvitationA042
Zukertort Opening: Queenside Fianchetto VariationA042
Zukertort Opening: Ross GambitA042
Zukertort Opening: Shabalov GambitA048
Zukertort Opening: Sicilian InvitationA042
Zukertort Opening: Slav InvitationA042
Zukertort Opening: Speelsmet GambitA045
Zukertort Opening: St. George DefenseA042
Zukertort Opening: The WalrusA046
Zukertort Opening: Vos GambitA044
Zukertort Opening: Wade DefenseA044
Zukertort Opening: Ware DefenseA042
King's Indian AttackA054
King's Indian Attack: Smyslov VariationA055
King's Indian Attack: Spassky VariationA054
King's Indian Attack: Symmetrical DefenseA054
King's Indian Attack: Wahls DefenseA0510
Polish Opening: Zukertort SystemA055
Zukertort OpeningA052
Zukertort OpeningA054
Zukertort Opening: Double Fianchetto AttackA0511
Zukertort Opening: Lemberger GambitA053
Zukertort Opening: Myers Polish AttackA055
Zukertort Opening: Nimzo-Larsen VariationA053
Zukertort Opening: Quiet SystemA053
Nimzo-Larsen Attack: Classical VariationA063
Nimzo-Larsen Attack: Norfolk GambitA065
Nimzo-Larsen Attack: Norfolk GambitA067
Zukertort OpeningA062
Zukertort Opening: Ampel VariationA063
Zukertort Opening: Old Indian AttackA063
Zukertort Opening: Pachman GambitA067
Zukertort Opening: Regina-Nu GambitA067
Zukertort Opening: Reversed Mexican DefenseA063
Zukertort Opening: Santasiere's FollyA063
Zukertort Opening: Tennison GambitA063
Zukertort Opening: Tennison Gambit, Brigg's TrapA0610
Zukertort Opening: The PotatoA063
Hungarian Opening: Wiedenhagen-Beta GambitA074
King's Indian AttackA073
King's Indian Attack, with Bf5A078
King's Indian Attack, with Bf5A0710
King's Indian Attack, with Bf5A0712
King's Indian Attack, with Bf5A0711
King's Indian Attack, with Bf5A0711
King's Indian Attack, with e6A076
King's Indian Attack, with e6A078
King's Indian Attack: Double FianchettoA074
King's Indian Attack: Keres VariationA074
King's Indian Attack: Keres VariationA076
King's Indian Attack: Keres VariationA078
King's Indian Attack: Keres VariationA0716
King's Indian Attack: Omega-Delta GambitA074
King's Indian Attack: Pachman SystemA0710
King's Indian Attack: Sicilian VariationA074
King's Indian Attack: Yugoslav VariationA078
King's Indian Attack: Yugoslav VariationA079
King's Indian Attack: French VariationA086
King's Indian Attack: Sicilian VariationA0815
King's Indian Attack: Sicilian VariationA085
King's Indian Attack: Sicilian VariationA089
Zukertort Opening: Reversed GrünfeldA087
Zukertort Opening: Reversed GrünfeldA088
Zukertort Opening: Reversed GrünfeldA089
Zukertort Opening: Reversed GrünfeldA089
Réti OpeningA093
Réti Opening: Advance VariationA094
Réti Opening: Advance Variation, Michel GambitA096
Réti Opening: Advance Variation, Navara GambitA096
Réti Opening: Penguin VariationA095
Réti Opening: Reversed Blumenfeld GambitA097
Réti Opening: Réti AcceptedA094
Réti Opening: Réti Gambit, Keres VariationA096
Réti Opening: Zilbermints GambitA094
English OpeningA101
English Opening: Achilles-Omega GambitA103
English Opening: Adorjan DefenseA104
English Opening: Anglo-Dutch DefenseA102
English Opening: Anglo-Dutch Defense, Hickmann GambitA103
English Opening: Anglo-Dutch Variation, Chabanon GambitA105
English Opening: Anglo-Dutch Variation, Ferenc GambitA105
English Opening: Anglo-Lithuanian VariationA102
English Opening: Anglo-Scandinavian DefenseA102
English Opening: Anglo-Scandinavian Defense, Löhn GambitA104
English Opening: Anglo-Scandinavian Defense, Malvinas VariationA106
English Opening: Anglo-Scandinavian Defense, Schulz GambitA104
English Opening: Great Snake VariationA102
English Opening: Jaenisch GambitA102
English Opening: King's English Variation, Botvinnik System, Prickly Pawn Pass SystemA1016
English Opening: Myers DefenseA102
English Opening: Myers GambitA104
English Opening: Porcupine VariationA107
English Opening: Wade GambitA103
English Opening: Zilbermints GambitA104
English Opening: Caro-Kann Defensive SystemA112

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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