ECO Volume A: Flank Openings

100 ECO codes, 817 named lines. Linked names have their own family guide on this site; unlinked names are listed for reference only.

All codes in Volume A

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ECO Volume A codes
CodeName(s)Lines
A00Amar OpeningAmsterdam AttackAnderssen's OpeningBarnes OpeningClemenz OpeningCreepy Crawly FormationFormationGlobal OpeningGrob OpeningHungarian OpeningKádas OpeningLasker Simul SpecialMieses OpeningPolish OpeningPolish Opening, with d5Saragossa OpeningSodium AttackValencia OpeningVan Geet OpeningVan't Kruijs OpeningWare Opening144
A01Nimzo-Larsen Attack15
A02Bird Opening19
A03Bird Opening8
A04Colle SystemModern DefenseZukertort DefenseZukertort Opening31
A05King's Indian AttackPolish OpeningZukertort Opening13
A06Nimzo-Larsen AttackZukertort Opening13
A07Hungarian OpeningKing's Indian AttackKing's Indian Attack, with Bf5King's Indian Attack, with e619
A08King's Indian AttackZukertort Opening8
A09Réti Opening9
A10English Opening20
A11English OpeningRéti Opening12
A12Réti Opening21
A13English Opening16
A14English OpeningRéti Opening12
A15English OpeningEnglish Orangutan15
A16English Opening7
A17English Opening6
A18English Opening3
A19English Opening2
A20English Opening5
A21English Opening6
A22English Opening8
A23English Opening2
A24English Opening1
A25English Opening11
A26English Opening2
A27English Opening1
A28English Opening9
A29English Opening14
A30English Opening6
A31English Opening1
A32English Opening1
A33English Opening2
A34English Opening6
A35English Opening4
A36English Opening4
A37English Opening9
A38English Opening3
A39English Opening1
A40Australian DefenseBenoni DefenseBorg DefenseColle SystemEnglish DefenseEnglund GambitEnglund Gambit DeclinedHorwitz DefenseKangaroo DefenseMikenas DefenseModern DefenseMontevideo DefensePolish DefensePterodactyl DefenseQueen's Pawn GameSlav IndianZaire Defense52
A41Modern DefenseOld Indian DefenseQueen's Pawn GameRat DefenseRobatsch DefenseWade DefenseZukertort Opening11
A42Modern DefensePterodactyl Defense6
A43Benoni DefenseIndian DefenseQueen's Pawn Game20
A44Benoni Defense2
A45Amazon AttackBasque OpeningCanard OpeningIndian DefensePaleface AttackQueen's Pawn GameTrompowsky Attack32
A46Döry DefenseIndian DefenseQueen's Pawn GameTorre AttackYusupov-Rubinstein System15
A47Indian DefenseMarienbad SystemPseudo Queen's Indian Defense5
A48East Indian DefenseIndian DefenseLondon SystemLondon System, with Bd3London System, with Be2Queen's Pawn GameTorre Attack16
A49Indian Defense1
A50Indian DefenseMexican DefenseQueen's Indian AcceleratedSlav Indian7
A51Indian Defense5
A52Indian Defense6
A53Old Indian Defense8
A54Old Indian Defense4
A55Old Indian Defense1
A56Benoni DefenseGrünfeld DefenseVulture Defense7
A57Benko GambitBenko Gambit AcceptedBenko Gambit Declined15
A58Benko Gambit AcceptedBenko Gambit5
A59Benko GambitBenko Gambit Accepted4
A60Benoni Defense2
A61Benoni Defense4
A62Benoni Defense1
A63Benoni Defense1
A64Benoni Defense1
A65Benoni Defense9
A66Benoni Defense2
A67Benoni Defense1
A68Benoni Defense1
A69Benoni Defense1
A70Benoni Defense3
A71Benoni Defense1
A72Benoni Defense1
A73Benoni Defense1
A74Benoni Defense1
A75Benoni Defense1
A76Benoni Defense1
A77Benoni Defense1
A78Benoni Defense1
A79Benoni Defense1
A80Dutch DefenseQueen's Pawn Game19
A81Dutch Defense5
A82Dutch DefenseRat Defense6
A83Dutch Defense5
A84Dutch Defense7
A85Dutch Defense1
A86Dutch Defense3
A87Dutch Defense1
A88Dutch Defense1
A89Dutch Defense1
A90Dutch Defense5
A91Dutch Defense2
A92Dutch Defense4
A93Dutch Defense1
A94Dutch Defense1
A95Dutch Defense2
A96Dutch Defense3
A97Dutch Defense2
A98Dutch Defense1
A99Dutch Defense1

Other volumes

Volume B · Volume C · Volume D · Volume E · All ECO families →