Last update: Oct 29, 98
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ECO CODES

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or insert a search word (examples: gambit, Benko)
or select one of the links to an opening group.
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A00

Polish Opening; Sokolsky's Opening
A01

Larsen Attack
A02-A03

Bird's Opening

A03
Dutch Variation
A04-A09

King's Indian Attack
A10

English Opening
A11-A12

Reti Opening
A13-A39

English Opening

A17
Hedgehog Variation

A20-A29
Reversed Sicilian

A30-A31
Hedgehod Variation

A32-A39
Symmetrical Variation
A40

Englund Gambit
A41-A42

Modern Defense
A43-A44

Old Benoni Defense
A45

Trompovsky Attack
A46

Queen's Pawn Game
A47

Queen's Indian Defense
A48-A49

Torre Attack
A50

Queen's Indian Defense
A51-A52

Budapest Gambit

A52
Main Line
A53-A55

Old Indian Defense
A56

Czech Benoni Defense
A57-A59

Benko (Volga) Gambit

A58
Accepted
A60-A79

Modern Benoni Defense
A80-A99

Dutch Defense

A82
Staunton Gambit

A83
Mainline

A87-A90
Leningrad
B00

Nimzowitsch Defense; Owens Defense
B01

Scandinavian Defense
B02-B05

Alekhine's Defense

B03
Four Pawns Attack
B06

Modern Defense
B07-B09

Pirc Defense

B08
Classical Variation

B09
Austrian Attack
B10-B19

Caro-Kann Defense

B11
Two Knights' Defense

B12
3.c5 Attack

B14
Panov Attack
B20-B99

Sicilian Defense

B21
Morra Gambit; Grand Prix Attack

B22
Alapin Variation

B23-B26
Closed Variation

B29
Rubinstein Variation

B30-B31
Rossolimo Variation

B32
Lowenthal Hunting Variation

B33
Sveshnikov Variation

B34-B39
Accelerated Dragon Variation


B37-B38Maroczy Bind

B40
Counter Attack Variation

B41-B49
Paulsen Variation


B41-B43Kan System


B44Taimanov System


B45Classical System


B46-B47Taimanov System

B50
Kopec Variation

B51-B52
Rossolimo Variation

B53
Hungarian Variation

B55
Anti-Dragon Variation

B57
Sozin-Benko Variation

B58
Boleslavsky Variation

B60-B69
Richter Rauzer Attack

B70-B79
Dragon Variation


B72Classical System


B76-B78Yugoslav Attack

B80-B89
Scheveningen Variation


B81Keres System


B86-B87Fischer/Sozin System

B90-B99
Najdorf Variation


B96Goteborg System


B97Poisoned Pawn System
C00-C20

French Defense

C01
Exchange Variation

C02
Advance Variation

C03-C09
Tarrasch Variation


C033.... a6 System


C043.... Bc6 System


C05-C063.... Nf6 System


C07-C093.... c5 System

C10
Rubinstein Variation

C11
Steinitz Variation

C12
MacCutcheon Variation

C15-C20
Winawer Variation


C15Lapus Manus System


C17Swiss System


C18Main Line


C19Advance, 6. ... Ne7


C20Exchange System
C21

Nordic Gambit
C22

Center Game
C23-C24

Bishop's Opening
C25-C29

Vienna Game
C30-C39

King's Gambit

C31-C32
Falkbeer Counter Gambit

C33
Keres Variation

C35
Cunningham Variation

C36
Modern Variation

C37
Muzio Gambit

C38
Greco & Philidor Gambits

C39
Allagier & Kiesertisky Gambits
C40

Latvian Gambit
C41

Philidor's Defense
C42-C43

Russian (Petroff's) Defense
C44

Ponziani Opening
C45

Scotch Game
C46

Three Knights' Opening
C47-C49

Four Knights' Opening
C50-C59

Italian Game (Giuoco Piano)

C50
Hungarian Defense

C51-C52
Evans Gambit

C55
Two Knights' Defense

C56
Max Lange Attack

C57-C59
Two Knights' Defense
C60-C99

Spanish Opening (Ruy Lopez)

C61
Bird's Defense

C62
Old Steinitz Defense

C63
Schliemann Gambit

C64
Cordel Defense

C65
Berlin Defense

C66
Modern Steinitz Defense

C67
Rio de Janerio Defense

C68-C69
Exchange Variation

C71-C76
Modern Steinitz Defense

C77
Anderssen Variation

C78
Archangel Variation; Moeller Attack

C79
Russian Variation

C80-C83
Open Variation


C80Bernstein System


C81Keres System


C83Main Line

C84
Center Attack

C85
Delayed Defered Exchange Variation

C86
Worral Attack

C88
Marshall Gambit

C92
Zaitsev Variation

C93
Smyslov Variation

C94-C95
Breyer Variation

C96-C99
Tchigorin
D00

Queen's Pawn Opening
D01

Veresov Opening
D02

Gruenfeld Reversed Opening
D03

Torre attack (Tartakower variation)
D04

Queen's pawn game
D05

Colle System
D06-D69

Queen's Gambit

D07
Tchigorin Variation

D08-D09
Albin Counter Gambit

D10-D19
Slav Defense


D14Exchange System


D15Geller Gambit


D17Czech System


D18Main Line


D19Euwe System

D20-D29
Accepted


D21Borsenko-Furman System

D30-D69
Declined


D31Alatortsev System


D32-D33Tarrasch System


D34Rubinstein System


D35-D36Exchange System


D375.Bf4 System


D38-D39Ragozin Defense


D40-D42Semi-Tarrasch Defense


D43Semi-Slav Defense


D44-D45Anti-Meran Defense


D46Semi-Slav Defense


D47-D49Meran Defense


D51-D52Cambridge Springs Defense


D53-D54Orthodox Defense


D55Anti-Tartakower System


D56Lasker System


D57Modern System


D58-D59Tartakower System


D60-D62Orthodox Defense


D63-D66Blackburne System


D67Capablanca System


D68Blackburne System

D70-D99
Grunfeld Defense


D71Neo-Grunfeld Variation


D76Orthodox Fianchetto Variation


D79Slav Variation


D82-D84Bf4 System


D85Modern Exchange Variation


D87Botvinnik Exchange Variation


D89Exchange Variation


D93Bg3 System


D94-D95Closed Variation


D96Russian Variation


D97Ragozin Variation (Classical)


D99Ragozin Variation (Smyslov)
E00-E09

Catalan Opening

E04-E05
Open Variation

E06-E09
Closed Variation
E10

Blumenfeld Gambit
E11

Bogo-Indian Defense
E12-E19

Queen's Indian Defense

E15
Accelerated Fianchetto Variation

E16
Bogo Variation
E20-E59

Nimzo-Indian Defense

E24-E29
Saemisch Variation

E30-E31
Leningrad Variation

E32-E39
Classical Variation

E41-E42
Huebner Variation

E43-E46
Nimzowitsch Variation

E47-E49
Rubinstein Variation

E50-E59
Modern Variation
E60-E99

King's Indian Defense

E62-E70
Fianchetto Variation


E62-E63Panno System


E65-E66Yugoslav System

E73-E74
Averbach Variation

E76-E79
Four Pawns' Variation

E80-E89
Classical Variation


E81Saemisch (Byrne) System


E83Panov System

E92
Exchange Variation

E93
Petrosian Variation
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