Cross References: MICOS vs ECO

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Go to Databases	Group Code - See All Openings	ECO
Flank Openings
Irregular Openings: Fourteen Start Moves without 1.d4, 1.e4, b3, c4, f4 and Nf3	A00.IO	A00

Larsen's Opening: 1.b3	A01.LA	A01

English Opening: 1.c4	A02.EN	A10 - A39

Bird's Opening: 1.f4	A03.BI	A02 - A03

Réti Opening: 1. Nf3	A04.RE	A04 - A09


King's Defences 1.e4 without ...e5
Irregular King's Defences: a5, a6, b6, f5, f6, g5, h5, h6, Na6, Nh6	B00.IK	B00

Sicilian Defence: 1.e4 c5	B01.SI	B20 - B99

Caro-Kann Defence: 1.e4 c6	B02.CK	B10 - B19

Scandinavian Defence: 1.e4 d5	B03.SC	B01

Pirc Defence: 1.e4 d6 (2.d4 Nf6)	B04.PI	B07 - B09

French Defence: 1.e4 e6	B05.FR	C00 - C19

Robatsch Defence: 1.e4 g6	B06.RO	B06

Pterodactyl Defence: 1.e4 g6 2.d4 Bg7 3...c5	B07.PT	B06

Nimzowitsch Defence: 1.e4 Nc6	B08.ND	B00

Alekhine Defence: 1.e4 Nf6	B09.AL	B02 - B05


Open Games 1.e4 e5

King's Pawn Game: 1e4 e5	C00.KP	C20

Bishop's Opening: 1.e4 e5 2.Bc4	C01.BS	C23 - C24

Center Game: 1.e4 e5 2.d4 exd4	C02.CG	C21 - C22

King's Gambit Declined: 1.e4 e5 2.f4 without exf4	C03.KD	C30 - C32

King's Gambit Accepted: 1.e4 e5 2.f4 exf4	C04.KA	C33 - C39

Vienna Game: 1.e4 e5 2.Nc3	C05.VI	C25 - C29

King's Knight Opening: 1.e4 e5 2.Nf3	C06.KN	C40

Philidor Defence: 1.e4 e5 2.Nf3 d6	C07.PH	C41

Ruy Lopez Opening: 1.e4 e5 2.Nf3 Nc6 3.Bb5	C08.RL	C60 - C99

Italian Game: 1.e4 e5 2.Nf3 Nc6 3.Bc4	C09.IT	C50

Giuoco Piano Game: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5	C10.GI	C53 - C54

Evans Gambit: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4	C11.EV	C51 - C52

Two Knights Game: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6	C12.TW	C55 - C59

Ponziani Opening: 1.e4 e5 2.Nf3 Nc6 3.c3	C13.PO	C44

Scotch Game: 1.e4 e5 2.Nf3 Nc6 3.d4	C14.SG	C44 - C45

Three Knights Game: 1.e4 e5 2.Nf3 Nc6 3.Nc3	C15.TH	C46

Four Knights Game: 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6	C16.FO	C47 - C49

Russian Game: 1.e4 e5 2.Nf3 Nf6	C17.RU	C42 - C43


Closed Games 1.d4 d5
Queen's Pawn Game: 1.d4 d5	D00.QP	D00 - D05

Queen's Gambit Declined: 1.d4 d5 2.c4 without dxc4	D01.QD	D06 - D19 + D30 - D69

Queen's Gambit Accepted: 1.d4 d5 2.c4 dxc4	D02.QA	D20 - D29

Slav Defence: 1.d4 d5 2.c4 c6	D03.SL	D10 - D18

Blackmar-Diemer Gambit: 1.d4 d5 2.e4 dxe4	D04.BL	D00

Tarrasch Defence: 1.d4 d5 2.c4 e6 3.Nc3 c5 (4.cxd5 exd5)	D05.TA	D30 - D34

Semi-Slav Defence: 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6	D06.SE	D30 - D49


Queen's Defences 1.d4 without ...d5
Irregular Queen's Defences: 1.d4 without ...c5, d5, e5, f5, g6, Nf6	E00.IQ	A40 - A41

Old Benoni Defence: 1.d4 c5	E01.OB	A43 - A44

Englund Gambit: 1.d4 e5	E02.EG	A40

Dutch Defence: 1.d4 f5	E03.DU	A80 - A99

Modern Defences: 1.d4 g6	E04.MO	A41 - A42

Indian Game: 1.d4 Nf6	E05.IN	A45 - A50

Benoni Defence: 1.d4 Nf6 2.c4 c5	E06.BE	A56

Benko Gambit: 1.d4 Nf6 2.c4 c5 3.d5 b5	E07.BG	A57 - A59

Modern Benoni: 1.d4 Nf6 2.c4 c5 3.d5 e6	E08.MB	A60 - A79

Old Indian Defence: 1.d4 Nf6 2.c4 d6	E09.OI	A53 - A55

Budapest Defence: 1.d4 Nf6 2.c4 e5	E10.BU	A51 - A52

Catalan Opening: 1.d4 Nf6 2.c4 e6 3.g3	E11.CA	E00 - E09

Nimzo-Indian Defence: 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4	E12.NI	E20 - E59

Bogo-Indian Defence: 1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+	E13.BO	E11

Queen's Indian Defence: 1.d4 Nf6 2.c4 e6 3.Nf3 b6	E14.QI	E12 - E19

King's Indian Defence: 1.d4 Nf6 2.c4 g6	E15.KI	E60 - E99

Grunfeld Defence: 1.d4 Nf6 2.c4 g6 3.Nc3 d5. Neo Grunfeld 3.g3 d5	E16.GR	D70 - D99

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