Openings after 1. c4

202 ECO entries beginning with 1. c4.

• King's Indian Attack: Yugoslav Variation (A07)
• English Opening (A10)
• English Opening: Achilles-Omega Gambit (A10)
• English Opening: Adorjan Defense (A10)
• English Opening: Anglo-Dutch Defense (A10)
• English Opening: Anglo-Dutch Defense, Hickmann Gambit (A10)
• English Opening: Anglo-Dutch Variation, Chabanon Gambit (A10)
• English Opening: Anglo-Dutch Variation, Ferenc Gambit (A10)
• English Opening: Anglo-Lithuanian Variation (A10)
• English Opening: Anglo-Scandinavian Defense (A10)
• English Opening: Anglo-Scandinavian Defense, Löhn Gambit (A10)
• English Opening: Anglo-Scandinavian Defense, Malvinas Variation (A10)
• English Opening: Anglo-Scandinavian Defense, Schulz Gambit (A10)
• English Opening: Great Snake Variation (A10)
• English Opening: Jaenisch Gambit (A10)
• English Opening: King's English Variation, Botvinnik System, Prickly Pawn Pass System (A10)
• English Opening: Myers Defense (A10)
• English Opening: Myers Gambit (A10)
• English Opening: Porcupine Variation (A10)
• English Opening: Wade Gambit (A10)
• English Opening: Zilbermints Gambit (A10)
• English Opening: Caro-Kann Defensive System (A11)
• Réti Opening: Anglo-Slav Variation, Gurevich System (A11)
• Réti Opening: Anglo-Slav Variation, Gurevich System (A11)
• Réti Opening: Anglo-Slav Variation, Gurevich System (A11)
• Réti Opening: Anglo-Slav Variation, Gurevich System (A11)
• Réti Opening: Anglo-Slav Variation, Gurevich System (A11)
• Réti Opening: Anglo-Slav Variation, with g3 (A11)
• Réti Opening: Anglo-Slav Variation, with g3 (A11)
• Réti Opening: Anglo-Slav Variation, with g3 (A11)
• Réti Opening: Anglo-Slav Variation, with g3 (A11)
• Réti Opening: Anglo-Slav Variation, with g3 (A11)
• Réti Opening: Anglo-Slav Variation (A12)
• Réti Opening: Anglo-Slav Variation, Capablanca Variation (A12)
• Réti Opening: Anglo-Slav Variation, Capablanca Variation (A12)
• Réti Opening: Anglo-Slav Variation, Capablanca Variation (A12)
• Réti Opening: Anglo-Slav Variation, London Defensive System (A12)
• Réti Opening: Anglo-Slav Variation, London Defensive System (A12)
• Réti Opening: Anglo-Slav Variation, London Defensive System (A12)
• Réti Opening: Anglo-Slav Variation, London Defensive System (A12)
• Réti Opening: Anglo-Slav Variation, Torre System (A12)
• Réti Opening: Anglo-Slav Variation, Torre System (A12)
• Réti Opening: Anglo-Slav Variation, Torre System (A12)
• Réti Opening: Anglo-Slav Variation, Torre System (A12)
• Réti Opening: Anglo-Slav Variation, with dxc4 (A12)
• English Opening: Agincourt Defense (A13)
• English Opening: Agincourt Defense (A13)
• English Opening: Agincourt Defense (A13)
• English Opening: Agincourt Defense (A13)
• English Opening: Agincourt Defense (A13)
• English Opening: Agincourt Defense, Bogoljubow Defense (A13)
• English Opening: Agincourt Defense, Catalan Defense (A13)
• English Opening: Agincourt Defense, Catalan Defense (A13)
• English Opening: Agincourt Defense, Catalan Defense Accepted (A13)
• English Opening: Agincourt Defense, Catalan Defense, Semi-Slav Defense (A13)
• English Opening: Agincourt Defense, Kurajica Defense (A13)
• English Opening: Agincourt Defense, Tarrasch Defense (A13)
• English Opening: Agincourt Defense, Wimpy System (A13)
• English Opening: Neo-Catalan (A13)
• English Opening: Neo-Catalan Declined (A13)
• English Opening: Romanishin Gambit (A13)
• English Opening: Agincourt Defense, Keres Defense (A14)
• English Opening: Agincourt Defense, Neo-Catalan Declined (A14)
• English Opening: Agincourt Defense, Neo-Catalan Declined (A14)
• English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3 (A14)
• English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3 (A14)
• English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3 (A14)
• English Opening: Anglo-Indian Defense (A15)
• English Opening: Anglo-Indian Defense, Anti-Anti-Grünfeld (A15)
• English Opening: Anglo-Indian Defense, Grünfeld Formation (A15)
• English Opening: Anglo-Indian Defense, King's Indian Formation (A15)
• English Opening: Anglo-Indian Defense, King's Indian Formation, Double Fianchetto (A15)
• English Opening: Anglo-Indian Defense, King's Knight Variation (A15)
• English Opening: Anglo-Indian Defense, Old Indian Formation (A15)
• English Opening: Anglo-Indian Defense, Queen's Indian Formation (A15)
• English Opening: Anglo-Indian Defense, Queen's Indian Formation (A15)
• English Opening: Anglo-Indian Defense, Romanishin Variation (A15)
• English Opening: Anglo-Indian Defense, Scandinavian Defense (A15)
• English Opening: Anglo-Indian Defense, Scandinavian Defense, Exchange Variation (A15)
• English Opening: Anglo-Indian Defense, Slav Formation (A15)
• English Orangutan (A15)
• English Orangutan (A15)
• English Opening: Anglo-Grünfeld Defense (A16)
• English Opening: Anglo-Grünfeld Defense, Korchnoi Variation (A16)
• English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation (A16)
• English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation (A16)
• English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation (A16)
• English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation (A16)
• English Opening: Anglo-Indian Defense, Queen's Knight Variation (A16)
• English Opening: Anglo-Indian Defense (A17)
• English Opening: Anglo-Indian Defense, Hedgehog System (A17)
• English Opening: Anglo-Indian Defense, Nimzo-English (A17)
• English Opening: Anglo-Indian Defense, Queen's Indian Formation (A17)
• English Opening: Anglo-Indian Defense, Queen's Indian Variation (A17)
• English Opening: Anglo-Indian Defense, Zvjaginsev-Krasenkow Attack (A17)
• English Opening: Mikenas-Carls Variation (A18)
• English Opening: Mikenas-Carls Variation (A18)
• English Opening: Mikenas-Carls Variation (A18)
• English Opening: Anglo-Indian Defense, Flohr-Mikenas-Carls Variation, Nei Gambit (A19)
• English Opening: Mikenas-Carls, Sicilian (A19)
• English Opening: Drill Variation (A20)
• English Opening: King's English Variation (A20)
• English Opening: King's English Variation, Kahiko-Hula Gambit (A20)
• English Opening: King's English Variation, Nimzowitsch Variation (A20)
• English Opening: King's English Variation, Nimzowitsch-Flohr Variation (A20)
• English Opening: King's English Variation (A21)
• English Opening: King's English Variation, Keres Defense (A21)
• English Opening: King's English Variation, Kramnik-Shirov Counterattack (A21)
• English Opening: King's English Variation, Reversed Sicilian (A21)
• English Opening: King's English Variation, Smyslov Defense (A21)
• English Opening: King's English Variation, Troger Defense (A21)
• English Opening: Carls-Bremen System (A22)
• English Opening: King's English Variation, Adhiban Gambit (A22)
• English Opening: King's English Variation, Bellon Gambit (A22)
• English Opening: King's English Variation, Two Knights Variation (A22)
• English Opening: King's English Variation, Two Knights Variation, Reversed Dragon (A22)
• English Opening: King's English Variation, Two Knights Variation, Smyslov System (A22)
• English Opening: King's English, Erbenheimer Gambit (A22)
• English Opening: King's English, Mazedonisch (A22)
• English Opening: King's English Variation, Two Knights Variation, Keres Variation (A23)
• English Opening: King's English Variation, Two Knights Variation, Keres Variation (A23)
• English Opening: King's English Variation, Two Knights Variation, Fianchetto Line (A24)
• English Opening: Closed, Taimanov Variation (A25)
• English Opening: Closed, Taimanov Variation (A25)
• English Opening: King's English Variation, Bremen-Hort Variation (A25)
• English Opening: King's English Variation, Closed System (A25)
• English Opening: King's English Variation, Hungarian Attack (A25)
• English Opening: King's English Variation, Reversed Closed Sicilian (A25)
• English Opening: King's English Variation, Reversed Closed Sicilian (A25)
• English Opening: King's English Variation, Reversed Closed Sicilian (A25)
• English Opening: King's English Variation, Reversed Closed Sicilian (A25)
• English Opening: King's English Variation, Reversed Closed Sicilian (A25)
• English Opening: King's English Variation, Taimanov Variation (A25)
• English Opening: King's English Variation, Botvinnik System (A26)
• English Opening: King's English Variation, Closed System, Full Symmetry (A26)
• English Opening: King's English Variation, Three Knights System (A27)
• English Opening: Four Knights System, Nimzowitsch Variation (A28)
• English Opening: King's English Variation, Four Knights Variation (A28)
• English Opening: King's English Variation, Four Knights Variation (A28)
• English Opening: King's English Variation, Four Knights Variation, Bradley Beach Variation (A28)
• English Opening: King's English Variation, Four Knights Variation, Flexible Line (A28)
• English Opening: King's English Variation, Four Knights Variation, Korchnoi Line (A28)
• English Opening: King's English Variation, Four Knights Variation, Quiet Line (A28)
• English Opening: King's English Variation, Four Knights Variation, Quiet Line (A28)
• English Opening: King's English Variation, Four Knights Variation, Quiet Line (A28)
• English Opening: King's English Variation, Four Knights Variation, Fianchetto Line (A29)
• English Opening: King's English Variation, Four Knights Variation, Fianchetto Line (A29)
• English Opening: King's English Variation, Four Knights Variation, Fianchetto Line (A29)
• English Opening: King's English Variation, Four Knights Variation, Fianchetto Line (A29)
• English Opening: King's English Variation, Four Knights Variation, Fianchetto Line (A29)
• English Opening: King's English Variation, Four Knights Variation, Fianchetto Line (A29)
• English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, Delayed .. Nc6 (A29)
• English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with .. d6 (A29)
• English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with .. d6 (A29)
• English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with .. d6, Be7 (A29)
• English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with .. d6, a6 (A29)
• English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with .. d6, h6 (A29)
• English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Bc5 (A29)
• English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Nb6 (A29)
• English Opening: Symmetrical Variation (A30)
• English Opening: Symmetrical Variation (A30)
• English Opening: Symmetrical Variation, Hedgehog Defense (A30)
• English Opening: Symmetrical Variation, Napolitano Gambit (A30)
• English Opening: Symmetrical, Hedgehog, Flexible Formation (A30)
• English Opening: Wing Gambit (A30)
• English Opening: Symmetrical Variation, Anti-Benoni Variation (A31)
• English Opening: Symmetrical Variation, Anti-Benoni Variation, Spielmann Defense (A32)
• English Opening: Symmetrical Variation, Anti-Benoni Variation, Geller Variation (A33)
• English Opening: Symmetrical Variation, Anti-Benoni Variation, Spielmann Defense (A33)
• English Opening: Symmetrical Variation (A34)
• English Opening: Symmetrical Variation, Fianchetto Variation (A34)
• English Opening: Symmetrical Variation, Normal Variation (A34)
• English Opening: Symmetrical Variation, Rubinstein Variation (A34)
• English Opening: Symmetrical Variation, Rubinstein Variation (A34)
• English Opening: Symmetrical Variation, Three Knights Variation (A34)
• English Opening: Symmetrical Variation (A35)
• English Opening: Symmetrical Variation, Four Knights Variation (A35)
• English Opening: Symmetrical Variation, Four Knights Variation, Keres-Parma System (A35)
• English Opening: Symmetrical Variation, Two Knights Variation (A35)
• English Opening: Symmetrical Variation, Botvinnik System (A36)
• English Opening: Symmetrical Variation, Botvinnik System Reversed, with e3 (A36)
• English Opening: Symmetrical Variation, Two Knights, Fianchetto Variation (A36)
• English Opening: Symmetrical Variation, Ultra-Symmetrical Variation (A36)
• English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3 (A37)
• English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3 (A37)
• English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3 (A37)
• English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3 (A37)
• English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3 (A37)
• English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3 (A37)
• English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation (A37)
• English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation (A37)
• English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation (A37)
• English Opening: Symmetrical Variation, Double Fianchetto (A38)
• English Opening: Symmetrical Variation, Duchamp Variation (A38)
• English Opening: Symmetrical Variation, Full Symmetry Line (A38)
• English Opening: Symmetrical Variation, Mecking Variation (A39)
• English Defense: Hartlaub Gambit Accepted (A40)
• English Defense: Hartlaub Gambit Declined (A40)
• Tarrasch Defense: Symmetrical Variation (D32)
• Queen's Gambit Declined: Semi-Tarrasch Defense (D41)
• Neo-Grünfeld Defense: Exchange Variation (D71)
• Catalan Opening: Closed (E06)