♞ 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)

B — Semi-open games

NameECOMoves
Barnes DefenseB002
Borg DefenseB002
Borg Defense: Borg GambitB004
Borg Defense: Troon GambitB006
Borg Defense: Zilbermints GambitB004
Carr DefenseB002
Carr Defense: Zilbermints GambitB004
Duras GambitB002
Fried Fox DefenseB004
Goldsmith DefenseB002
Goldsmith Defense: Picklepuss DefenseB004
Hippopotamus DefenseB002
Hippopotamus DefenseB006
King's Pawn GameB001
Lemming DefenseB002
Lion Defense: Lion's JawB005
Nimzowitsch DefenseB002
Nimzowitsch DefenseB003
Nimzowitsch Defense: Breyer VariationB006
Nimzowitsch Defense: Colorado CountergambitB004
Nimzowitsch Defense: Colorado Countergambit AcceptedB005
Nimzowitsch Defense: Declined VariationB003
Nimzowitsch Defense: El Columpio DefenseB006
Nimzowitsch Defense: El Columpio Defense, El Columpio GambitB0011
Nimzowitsch Defense: El Columpio Defense, Exchange VariationB0011
Nimzowitsch Defense: El Columpio Defense, Pin VariationB0011
Nimzowitsch Defense: Franco-Nimzowitsch VariationB004
Nimzowitsch Defense: French ConnectionB004
Nimzowitsch Defense: Hornung GambitB005
Nimzowitsch Defense: Kennedy VariationB004
Nimzowitsch Defense: Kennedy Variation, Bielefelder GambitB006
Nimzowitsch Defense: Kennedy Variation, Hammer GambitB006
Nimzowitsch Defense: Kennedy Variation, Herford GambitB006
Nimzowitsch Defense: Kennedy Variation, Keres AttackB007
Nimzowitsch Defense: Kennedy Variation, Linksspringer VariationB005
Nimzowitsch Defense: Kennedy Variation, Main LineB008
Nimzowitsch Defense: Kennedy Variation, Paulsen AttackB007
Nimzowitsch Defense: Kennedy Variation, Riemann DefenseB008
Nimzowitsch Defense: Kennedy Variation, de Smet GambitB006
Nimzowitsch Defense: Mikenas VariationB004
Nimzowitsch Defense: Neo-Mongoloid DefenseB004
Nimzowitsch Defense: Pirc ConnectionB004
Nimzowitsch Defense: Pseudo-Spanish VariationB003
Nimzowitsch Defense: Scandinavian VariationB004
Nimzowitsch Defense: Scandinavian Variation, Aachen GambitB006
Nimzowitsch Defense: Scandinavian Variation, Advance VariationB005
Nimzowitsch Defense: Scandinavian Variation, Bogoljubow VariationB005
Nimzowitsch Defense: Scandinavian Variation, Bogoljubow VariationB006
Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation, Brandics GambitB006
Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation, Erben GambitB006
Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation, Heinola-Deppe GambitB006
Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation, Nimzowitsch GambitB008
Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation, Richter GambitB009
Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation, Vehre VariationB006
Nimzowitsch Defense: Scandinavian Variation, Exchange VariationB006
Nimzowitsch Defense: Scandinavian Variation, Exchange Variation, Marshall GambitB007
Nimzowitsch Defense: Wheeler GambitB003
Nimzowitsch Defense: Williams VariationB004
Nimzowitsch Defense: Woodchuck VariationB004
Owen DefenseB002
Owen Defense: Guatemala DefenseB004
Owen Defense: Hekili-Loa GambitB006
Owen Defense: Matovinsky GambitB0010
Owen Defense: Naselwaus GambitB005
Owen Defense: Smith GambitB005
Owen Defense: Unicorn VariationB006
Owen Defense: Wind GambitB006
Pirc DefenseB002
Pirc DefenseB003
Pirc DefenseB004
Pirc Defense: Roscher GambitB005
Rat Defense: Antal DefenseB004
Rat Defense: Fuller GambitB006
Rat Defense: HarmonistB003
Rat Defense: Petruccioli AttackB003
Rat Defense: Spike AttackB003
St. George DefenseB002
St. George Defense: Polish VariationB008
St. George Defense: San Jorge VariationB0012
St. George Defense: Zilbermints GambitB004
Van Geet Opening: Berlin GambitB007
Ware DefenseB002
Ware Defense: Snagglepuss DefenseB004
Scandinavian DefenseB012
Scandinavian DefenseB013
Scandinavian Defense: Anderssen CounterattackB018
Scandinavian Defense: Anderssen Counterattack, Collijn VariationB0110
Scandinavian Defense: Anderssen Counterattack, Goteborg SystemB019
Scandinavian Defense: Anderssen Counterattack, Orthodox AttackB0113
Scandinavian Defense: Blackburne GambitB016
Scandinavian Defense: Blackburne-Kloosterboer GambitB014
Scandinavian Defense: Boehnke GambitB016
Scandinavian Defense: Bronstein VariationB0110
Scandinavian Defense: Classical VariationB0110
Scandinavian Defense: Grünfeld VariationB0113
Scandinavian Defense: Gubinsky-Melts DefenseB016
Scandinavian Defense: Icelandic-Palme GambitB016
Scandinavian Defense: Kiel VariationB018
Scandinavian Defense: Kloosterboer GambitB016
Scandinavian Defense: Kádas GambitB018

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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