♞ 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
Réti Opening: Anglo-Slav Variation, Gurevich SystemA115
Réti Opening: Anglo-Slav Variation, Gurevich SystemA117
Réti Opening: Anglo-Slav Variation, Gurevich SystemA119
Réti Opening: Anglo-Slav Variation, Gurevich SystemA1110
Réti Opening: Anglo-Slav Variation, Gurevich SystemA1110
Réti Opening: Anglo-Slav Variation, with g3A118
Réti Opening: Anglo-Slav Variation, with g3A117
Réti Opening: Anglo-Slav Variation, with g3A118
Réti Opening: Anglo-Slav Variation, with g3A118
Réti Opening: Anglo-Slav Variation, with g3A1111
Réti Opening: Anglo-Slav Variation, with g3A1112
Réti Opening: Anglo-Slav VariationA127
Réti Opening: Anglo-Slav Variation, Bled VariationA128
Réti Opening: Anglo-Slav Variation, Bogoljubow VariationA125
Réti Opening: Anglo-Slav Variation, Bogoljubow VariationA126
Réti Opening: Anglo-Slav Variation, Bogoljubow VariationA126
Réti Opening: Anglo-Slav Variation, Bogoljubow VariationA127
Réti Opening: Anglo-Slav Variation, Capablanca VariationA128
Réti Opening: Anglo-Slav Variation, Capablanca VariationA129
Réti Opening: Anglo-Slav Variation, Capablanca VariationA129
Réti Opening: Anglo-Slav Variation, London Defensive SystemA128
Réti Opening: Anglo-Slav Variation, London Defensive SystemA129
Réti Opening: Anglo-Slav Variation, London Defensive SystemA1211
Réti Opening: Anglo-Slav Variation, London Defensive SystemA129
Réti Opening: Anglo-Slav Variation, New York SystemA128
Réti Opening: Anglo-Slav Variation, New York SystemA129
Réti Opening: Anglo-Slav Variation, New York SystemA129
Réti Opening: Anglo-Slav Variation, Torre SystemA128
Réti Opening: Anglo-Slav Variation, Torre SystemA129
Réti Opening: Anglo-Slav Variation, Torre SystemA1211
Réti Opening: Anglo-Slav Variation, Torre SystemA129
Réti Opening: Anglo-Slav Variation, with dxc4A128
English Opening: Agincourt DefenseA132
English Opening: Agincourt DefenseA133
English Opening: Agincourt DefenseA134
English Opening: Agincourt DefenseA1310
English Opening: Agincourt DefenseA1311
English Opening: Agincourt Defense, Bogoljubow DefenseA138
English Opening: Agincourt Defense, Catalan DefenseA139
English Opening: Agincourt Defense, Catalan DefenseA136
English Opening: Agincourt Defense, Catalan Defense AcceptedA138
English Opening: Agincourt Defense, Catalan Defense, Semi-Slav DefenseA138
English Opening: Agincourt Defense, Kurajica DefenseA136
English Opening: Agincourt Defense, Tarrasch DefenseA1312
English Opening: Agincourt Defense, Wimpy SystemA139
English Opening: Neo-CatalanA136
English Opening: Neo-Catalan DeclinedA138
English Opening: Romanishin GambitA138
English Opening: Agincourt Defense, Keres DefenseA1414
English Opening: Agincourt Defense, Neo-Catalan DeclinedA149
English Opening: Agincourt Defense, Neo-Catalan DeclinedA1411
English Opening: Agincourt Defense, Neo-Catalan DeclinedA1412
English Opening: Agincourt Defense, Neo-Catalan DeclinedA1413
English Opening: Agincourt Defense, Neo-Catalan DeclinedA1414
English Opening: Agincourt Defense, Neo-Catalan DeclinedA1414
English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3A149
English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3A1410
English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3A1410
Réti Opening: Anglo-Slav VariationA1411
Réti Opening: Anglo-Slav Variation, Bogoljubow Variation, Stonewall LineA1413
English Opening: Anglo-Indian DefenseA152
English Opening: Anglo-Indian Defense, Anti-Anti-GrünfeldA157
English Opening: Anglo-Indian Defense, Grünfeld FormationA156
English Opening: Anglo-Indian Defense, King's Indian FormationA154
English Opening: Anglo-Indian Defense, King's Indian Formation, Double FianchettoA158
English Opening: Anglo-Indian Defense, King's Knight VariationA153
English Opening: Anglo-Indian Defense, Old Indian FormationA154
English Opening: Anglo-Indian Defense, Queen's Indian FormationA154
English Opening: Anglo-Indian Defense, Queen's Indian FormationA158
English Opening: Anglo-Indian Defense, Romanishin VariationA156
English Opening: Anglo-Indian Defense, Scandinavian DefenseA154
English Opening: Anglo-Indian Defense, Scandinavian Defense, Exchange VariationA156
English Opening: Anglo-Indian Defense, Slav FormationA156
English OrangutanA153
English OrangutanA155
English Opening: Anglo-Grünfeld DefenseA164
English Opening: Anglo-Grünfeld Defense, Korchnoi VariationA1612
English Opening: Anglo-Indian Defense, Anglo-Grünfeld VariationA167
English Opening: Anglo-Indian Defense, Anglo-Grünfeld VariationA168
English Opening: Anglo-Indian Defense, Anglo-Grünfeld VariationA1610
English Opening: Anglo-Indian Defense, Anglo-Grünfeld VariationA1610
English Opening: Anglo-Indian Defense, Queen's Knight VariationA163
English Opening: Anglo-Indian DefenseA1710
English Opening: Anglo-Indian Defense, Hedgehog SystemA174
English Opening: Anglo-Indian Defense, Nimzo-EnglishA176
English Opening: Anglo-Indian Defense, Queen's Indian FormationA176
English Opening: Anglo-Indian Defense, Queen's Indian VariationA179
English Opening: Anglo-Indian Defense, Zvjaginsev-Krasenkow AttackA177
English Opening: Mikenas-Carls VariationA185
English Opening: Mikenas-Carls VariationA186
English Opening: Mikenas-Carls VariationA187
English Opening: Anglo-Indian Defense, Flohr-Mikenas-Carls Variation, Nei GambitA198
English Opening: Mikenas-Carls, SicilianA196
English Opening: Drill VariationA204
English Opening: King's English VariationA202
English Opening: King's English Variation, Kahiko-Hula GambitA207
English Opening: King's English Variation, Nimzowitsch VariationA203
English Opening: King's English Variation, Nimzowitsch-Flohr VariationA204
English Opening: King's English VariationA215
English Opening: King's English Variation, Keres DefenseA216

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

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