♞ 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)

E — Indian defenses

NameECOMoves
Catalan OpeningE005
Catalan OpeningE006
Catalan Opening: Hungarian GambitE006
Indian DefenseE005
Indian Defense: Devin GambitE005
Indian Defense: Seirawan AttackE005
Catalan Opening: Open DefenseE017
Catalan Opening: Tarrasch DefenseE0110
Catalan Opening: Open DefenseE028
Catalan Opening: Open DefenseE0311
Catalan Opening: Open Defense, Alekhine VariationE0313
Catalan Opening: Open DefenseE049
Catalan Opening: Open DefenseE0410
Catalan Opening: Open Defense, Modern Sharp VariationE0412
Catalan Opening: Open Defense, Classical LineE0510
Catalan Opening: Open Defense, Classical LineE0512
Catalan Opening: ClosedE069
Catalan Opening: ClosedE0612
Catalan Opening: ClosedE0616
Catalan Opening: ClosedE0618
Catalan Opening: ClosedE0712
Catalan Opening: Closed, Botvinnik VariationE0715
Catalan Opening: ClosedE0813
Catalan Opening: ClosedE0815
Catalan Opening: ClosedE0816
Catalan Opening: ClosedE0817
Catalan Opening: ClosedE0819
Catalan Opening: Closed, Spassky GambitE0820
Catalan Opening: Closed, Zagoryansky VariationE0817
Catalan Opening: Closed Variation, Rabinovich VariationE0916
Catalan Opening: Closed Variation, Traditional VariationE0916
Catalan Opening: Closed, Main LineE0915
Catalan Opening: Closed, Main LineE0918
Catalan Opening: Closed, Main LineE0923
Catalan Opening: Closed, Sokolsky VariationE0920
Blumenfeld CountergambitE108
Blumenfeld Countergambit AcceptedE1012
Blumenfeld Countergambit: Duz-Khotimirsky VariationE109
Blumenfeld Countergambit: Spielmann VariationE1012
Indian Defense: Anti-Nimzo-IndianE105
Indian Defense: Dzindzi-Indian DefenseE106
Indian Defense: Döry IndianE106
Bogo-Indian DefenseE116
Bogo-Indian Defense: Exchange VariationE118
Bogo-Indian Defense: Grünfeld VariationE117
Bogo-Indian Defense: Haiti VariationE118
Bogo-Indian Defense: Monticelli TrapE1119
Bogo-Indian Defense: New England VariationE117
Bogo-Indian Defense: Nimzowitsch VariationE118
Bogo-Indian Defense: Retreat VariationE118
Bogo-Indian Defense: Retreat VariationE1111
Bogo-Indian Defense: Retreat VariationE1112
Bogo-Indian Defense: Retreat VariationE1113
Bogo-Indian Defense: Retreat VariationE1115
Bogo-Indian Defense: Retreat VariationE1116
Bogo-Indian Defense: Retreat VariationE1117
Bogo-Indian Defense: Retreat VariationE1117
Bogo-Indian Defense: Retreat VariationE1117
Bogo-Indian Defense: Retreat VariationE1118
Bogo-Indian Defense: Retreat VariationE1119
Bogo-Indian Defense: Retreat VariationE1120
Bogo-Indian Defense: Vitolins VariationE118
Bogo-Indian Defense: Wade-Smyslov VariationE118
Queen's Indian DefenseE126
Queen's Indian Defense: Kasparov VariationE127
Queen's Indian Defense: Kasparov Variation, Botvinnik AttackE1214
Queen's Indian Defense: Kasparov-Petrosian VariationE129
Queen's Indian Defense: Kasparov-Petrosian Variation, Andersson VariationE1210
Queen's Indian Defense: Kasparov-Petrosian Variation, Classical VariationE1212
Queen's Indian Defense: Kasparov-Petrosian Variation, Hedgehog VariationE1210
Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov AttackE1213
Queen's Indian Defense: Kasparov-Petrosian Variation, Main LineE1210
Queen's Indian Defense: Kasparov-Petrosian Variation, Marco DefenseE1210
Queen's Indian Defense: Kasparov-Petrosian Variation, Modern VariationE1212
Queen's Indian Defense: Kasparov-Petrosian Variation, Petrosian AttackE1213
Queen's Indian Defense: Kasparov-Petrosian Variation, Polovodin GambitE1213
Queen's Indian Defense: Kasparov-Petrosian Variation, Rashkovsky AttackE1213
Queen's Indian Defense: Kasparov-Petrosian Variation, Romanishin AttackE1213
Queen's Indian Defense: Miles VariationE127
Queen's Indian Defense: Petrosian VariationE127
Queen's Indian Defense: Petrosian Variation, Farago DefenseE1210
Queen's Indian Defense: Kasparov VariationE1312
Queen's Indian Defense, with e3E1411
Queen's Indian Defense, with e3E1412
Queen's Indian Defense, with e3E1412
Queen's Indian Defense, with e3E1413
Queen's Indian Defense, with e3E1417
Queen's Indian Defense, with e3E1410
Queen's Indian Defense, with e3E1411
Queen's Indian Defense, with e3E1414
Queen's Indian Defense, with e3E1412
Queen's Indian Defense, with e3E1412
Queen's Indian Defense, with e3E1415
Queen's Indian Defense, with e3E1413
Queen's Indian Defense, with e3E1417
Queen's Indian Defense, with e3E1417
Queen's Indian Defense, with e3, Bb4+ LineE1410
Queen's Indian Defense: Averbakh VariationE1417
Queen's Indian Defense: Spassky SystemE147
Queen's Indian Defense: Spassky SystemE148

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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