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)

D — Closed & semi-closed

NameECOMoves
Slav Defense: Chebanenko VariationD1510
Slav Defense: Chebanenko Variation, Advance SystemD159
Slav Defense: Geller GambitD159
Slav Defense: Geller GambitD1511
Slav Defense: Schlechter VariationD158
Slav Defense: Süchting VariationD158
Slav Defense: Three Knights VariationD157
Slav Defense: Two Knights AttackD158
Slav Defense: Alapin VariationD169
Slav Defense: Smyslov VariationD1610
Slav Defense: Soultanbeieff VariationD1610
Slav Defense: Steiner VariationD1610
Slav Defense: Czech VariationD1710
Slav Defense: Czech Variation, Bled AttackD1711
Slav Defense: Czech Variation, Carlsbad VariationD1716
Slav Defense: Czech Variation, Carlsbad Variation, Morozevich VariationD1722
Slav Defense: Czech Variation, Krause AttackD1711
Slav Defense: Czech Variation, Krause Attack, Fazekas GambitD1713
Slav Defense: Czech Variation, Wiesbaden VariationD1712
Slav Defense: Czech Variation, Wiesbaden Variation, Sharp LineD1715
Slav Defense: Czech Variation, Classical SystemD1811
Slav Defense: Czech Variation, Lasker VariationD1812
Slav Defense: Czech Variation, Classical System, Main LineD1917
Slav Defense: Czech Variation, Dutch VariationD1915
Slav Defense: Czech Variation, Dutch Variation, Sämisch VariationD1919
Queen's Gambit AcceptedD204
Queen's Gambit Accepted: Accelerated Mannheim VariationD205
Queen's Gambit Accepted: Central Variation, Alekhine SystemD206
Queen's Gambit Accepted: Central Variation, Greco VariationD206
Queen's Gambit Accepted: Central Variation, McDonnell DefenseD206
Queen's Gambit Accepted: Central Variation, McDonnell Defense, Somov GambitD207
Queen's Gambit Accepted: Central Variation, Modern DefenseD206
Queen's Gambit Accepted: Central Variation, Rubinstein DefenseD206
Queen's Gambit Accepted: Central Variation, Rubinstein Defense, Yefimov GambitD208
Queen's Gambit Accepted: Linares VariationD2010
Queen's Gambit Accepted: Old VariationD205
Queen's Gambit Accepted: Old Variation, Billinger GambitD2011
Queen's Gambit Accepted: Old Variation, Christensen GambitD2011
Queen's Gambit Accepted: Old Variation, Korchnoi GambitD2011
Queen's Gambit Accepted: Old Variation, Novikov GambitD2011
Queen's Gambit Accepted: Saduleto VariationD205
Queen's Gambit Accepted: Schwartz DefenseD206
Queen's Gambit Accepted: Alekhine Defense, Borisenko-Furman VariationD217
Queen's Gambit Accepted: Godes VariationD216
Queen's Gambit Accepted: Gunsberg DefenseD216
Queen's Gambit Accepted: Normal VariationD215
Queen's Gambit Accepted: Rosenthal VariationD216
Queen's Gambit Accepted: Slav GambitD216
Queen's Gambit Accepted: Alekhine DefenseD226
Queen's Gambit Accepted: Alekhine Defense, Alatortsev VariationD2211
Queen's Gambit Accepted: Alekhine Defense, Haberditz VariationD228
Queen's Gambit AcceptedD236
Queen's Gambit Accepted: Mannheim VariationD237
Queen's Gambit AcceptedD249
Queen's Gambit AcceptedD249
Queen's Gambit Accepted: Bogoljubow DefenseD249
Queen's Gambit Accepted: Gunsberg Defense, Prianishenmo GambitD2413
Queen's Gambit Accepted: Showalter VariationD247
Queen's Gambit Accepted: Janowski-Larsen VariationD258
Queen's Gambit Accepted: Normal VariationD257
Queen's Gambit Accepted: Smyslov VariationD258
Queen's Gambit Accepted: Winawer DefenseD258
Queen's Gambit Accepted: Classical DefenseD2610
Queen's Gambit Accepted: Classical Defense, Normal LineD2611
Queen's Gambit Accepted: Classical Defense, Steinitz Variation, Development VariationD2612
Queen's Gambit Accepted: Classical Defense, Steinitz Variation, Exchange VariationD2612
Queen's Gambit Accepted: Classical, Furman VariationD2619
Queen's Gambit Accepted: Normal Variation, Traditional SystemD268
Queen's Gambit Accepted: Normal Variation, Traditional SystemD2612
Queen's Gambit Accepted: Normal Variation, Traditional SystemD2612
Queen's Gambit Accepted: Normal Variation, Traditional SystemD2613
Queen's Gambit Accepted: Classical Defense, Main LineD2712
Queen's Gambit Accepted: Classical Defense, Main LineD2713
Queen's Gambit Accepted: Classical Defense, Rubinstein VariationD2713
Queen's Gambit Accepted: Classical Defense, Rubinstein VariationD2716
Queen's Gambit Accepted: Classical Defense, Russian GambitD2713
Queen's Gambit Accepted: Furman VariationD2714
Queen's Gambit Accepted: Classical Defense, Alekhine SystemD2813
Queen's Gambit Accepted: Classical Defense, Alekhine SystemD2814
Queen's Gambit Accepted: Classical, Flohr VariationD2826
Queen's Gambit Accepted: Classical Defense, Alekhine System, Main LineD2916
Queen's Gambit Accepted: Classical Defense, Alekhine System, Main LineD2917
Queen's Gambit Accepted: Classical Defense, Alekhine System, Smyslov VariationD2920
Queen's Gambit DeclinedD304
Queen's Gambit Declined: Capablanca VariationD308
Queen's Gambit Declined: Capablanca VariationD3011
Queen's Gambit Declined: Semmering VariationD3012
Queen's Gambit Declined: Spielmann VariationD3010
Queen's Gambit Declined: Stonewall VariationD3012
Queen's Gambit Declined: Tarrasch Defense, Pseudo-TarraschD306
Queen's Gambit Declined: Tarrasch Defense, Pseudo-Tarrasch Bishop AttackD309
Queen's Gambit Declined: Traditional VariationD307
Queen's Gambit Declined: Vienna VariationD308
Semi-Slav Defense: Quiet VariationD309
Semi-Slav Defense: Quiet VariationD3010
Queen's Gambit Declined: Alapin VariationD316
Queen's Gambit Declined: Charousek VariationD316
Queen's Gambit Declined: Charousek Variation, Miladinovic GambitD319
Queen's Gambit Declined: Janowski VariationD316
Queen's Gambit Declined: Queen's Knight VariationD315

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