Eco opening database; C00-C99
To view the ECO code, open C00-C99.txt or C00-C99.pgn
The French Defense (C00-C19)
The Romantic Openings (C20-29), (C40-59)
The King's Gambit (C30-39)
The Evans Gambit (C51-52)
The Ruy Lopez (C60-99)
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C00= French defense
C01= French, Exchange variation
C02= French, Advance variation
C03= French, Tarrasch
C04= French, Tarrasch, Guimard Main line
C05= French, Tarrasch, Closed variation
C06= French, Tarrasch, Closed variation, Main line
C07= French, Tarrasch, Open variation
C08= French, Tarrasch, Open, 4.exd5 exd5
C09= French, Tarrasch, Open variation, Main line
C10= French, Paulsen variation
C11= French defense
C12= French, MacCutcheon variation
C13= French, Classical
C14= French, Classical variation
C15= French, Winawer (Nimzovich) variation
C16= French, Winawer, Advance variation
C17= French, Winawer, Advance variation
C18= French, Winawer, Advance variation
C19= French, Winawer, Advance, 6...Ne7
C20= King's pawn game
C21= center game
C22= center game
C23= Bishop's Opening
C24= Bishop's Opening, Berlin defense
C25= Vienna game
C26= Vienna, Falkbeer variation
C27= Vienna game
C28= Vienna game
C29= Vienna gambit, Kaufmann variation
C30= King's gambit
C31= KGD, Falkbeer counter-gambit
C32= KGD, Falkbeer, 5. dxe4
C33= King's gambit accepted
C34= King's knight's gambit
C35= KGA, Cunningham defense
C36= KGA, Abbazia defense (Classical defense, Modern defense)
C37= KGA, Quaade gambit
C38= King's knight's gambit
C39= King's knight's gambit
C40= King's knight Opening
C41= Philidor's defense
C42= Petrov's defense
C43= Petrov, Modern (Steinitz) attack
C44= King's pawn game
C45= Scotch game
C46= Three knights game
C47= Four knights, Scotch variation
C48= Four knights, Spanish variation
C49= Four knights, double Ruy Lopez
C50= King's pawn game
C51= Evans gambit declined
C52= Evans gambit
C53= Giuoco piano
C54= Guioco piano
C55= Two knights defense
C56= Two knights defense
C57= Two knights defense
C58= Two knights defense
C59= Two knights defense
C60= Ruy Lopez
C61= Ruy Lopez, Bird's defense
C62= Ruy Lopez, Old Steinitz defence
C63= Ruy Lopez, Schilemann defense
C64= Ruy Lopez, Classical (Cordel) defence
C65= Ruy Lopez, Berlin defense
C66= Ruy Lopez, Berlin defence, 4.O-O, d6
C67= Ruy Lopez, Berlin defence, Open variation
C68= Ruy Lopez, Exchange variation
C69= Ruy Lopez, Exchange variation, 5.O-O
C70= Ruy Lopez,
C71= Ruy Lopez, Modern Steinitz defense
C72= Ruy Lopez, Modern Steinitz defense 5.0-0
C73= Ruy Lopez, Modern Steinitz defense, Richter variation
C74= Ruy Lopez, Modern Steinitz defense
C75= Ruy Lopez, Modern Steinitz defense
C76= Ruy Lopez, Modern Steinitz defense, Fianchetto (Bronstein) variation
C77= Ruy Lopez, Morphy defence
C78= Ruy Lopez, 5.O-O
C79= Ruy Lopez, Steinitz defense deferred (Russian defence)
C80= Ruy Lopez, Open (Tarrasch) defence
C81= Ruy Lopez, Open, Howell attack
C82= Ruy Lopez, Open, 9.c3
C83= Ruy Lopez, Open, Classical defence
C84= Ruy Lopez, Closed defense
C85= Ruy Lopez, Exchange variation doubly deferred (DERLD)
C86= Worrall attack
C87= Ruy Lopez, Closed, Averbach variation
C88= Ruy Lopez, Closed
C89= Ruy Lopez, Marshall counter-attack
C90= Ruy Lopez, closed (with ...d6)
C91= Ruy Lopez, closed, 9.d4
C92= Ruy Lopez, closed, 9.d4
C93= Ruy Lopez, closed, Smyslov defense
C94= Ruy Lopez, Closed, Breyer defense
C95= Ruy Lopez, closed, Breyer, 10.d4
C96= Ruy Lopez, closed, 8...Na5
C97= Ruy Lopez, Closed, Chigorin defense
C98= Ruy Lopez, Closed, Chigorin, 12...Nc6
C99= Ruy Lopez, Closed, Chigorin, 12...c5d4