Continue to play the Openings. Study Games for each Opening. See the Opening Variances played on Chess Boards by click on Pictures.
Variances for Eco Code A (Irregular)
A00
Irregular Openings
A01
Nimzovich
A02-A03
Bird
A04-A09
Réti
A10-A39
English
A40
Irregular Queen’s Pawn
A41-A42
Modern
A43-A44
Old Benoni
A45-A50
Indian
A51-A52
Budapest
A53-A55
Old Indian
A56
Benoni
A57-A59
Benko Gambit
A60-A79
Modern Benoni
A80-A99
Dutch
Variances for Eco Code B (1. e4)
B00
Irregular King’s Pawn
B01
Scandinavian Game
B02-B05
Alekhine
B06
Modern and Pterodactyl Defence
B07-B09
Pirc Defence
B10-B19
Caro-Kann
B20-B59
Sicilian part I
B60-B99
Sicilian part II
Variances for Eco Code C (1. e4)
C00-C19
French
C20
King’s Pawn
C21-C22
Center Game
C23-C24
Bishop Opening
C25-C28
Vienna Game
C29
Vienna Gambit
C30
King’s Gambit Declined
C31-C32
Falkbeer Counter-Gambit
C33-C39
King’s Gambit Accepted
C40
Irregular King’s Knight
C41
Philidor Defence
C42-C43
Russian Game
C44-C45
King’s Knight/Ponziani/Scotch
C46
Four/Three Knights
C47-C49
Four Knights
C50
Italian Game
C51-C52
Evans Gambit
C53-C54
Giuoco Piano
C55-C59
Two Knights
C60-C99
Spanish: Ruy Lopez
Variances for Eco Code D (1. d4)
D00-D05
Queen’s Pawn
D06-D09
Queen’s Gambit
D10-D19
Slav Defence
D20-D29
Queen’s Gambit Accepted
D30-D69
Queen’s Gambit Declined
D70-D99
Gruenfeld
Variances for Eco Code E (1. d4)