Chess openings
Every opening family in the Lumichess book — 62 families across 53,322 catalogued positions. Pick one to see its ECO codes and named variations, or analyse your own games free to find out which of them actually works for you.
Sicilian DefenseECO A03–C21 · 9,095 positions English OpeningECO A10–B20 · 5,064 positions French DefenseECO C00–C19 · 3,066 positions King's Indian DefenseECO A15–E99 · 3,012 positions Queen's Gambit DeclinedECO A13–E00 · 2,910 positions Ruy López OpeningECO C60–C99 · 2,757 positions Caro-Kann DefenseECO A40–B19 · 1,860 positions Slav DefenseECO B12–D31 · 1,684 positions Nimzo-Indian DefenseECO E20–E58 · 1,586 positions Indian GameECO A15–E10 · 1,433 positions Queen's Pawn OpeningECO A04–E00 · 1,285 positions Alapin Sicilian DefenseECO B22 · 1,117 positions Queen's Indian DefenseECO E12–E19 · 1,031 positions Réti OpeningECO A01–E60 · 1,018 positions Grünfeld DefenseECO D70–D99 · 1,006 positions Closed Sicilian DefenseECO B23–B30 · 859 positions Pirc DefenseECO B06–C00 · 846 positions Modern DefenseECO A04–D05 · 825 positions Semi-Slav DefenseECO D02–D49 · 737 positions Queen's Gambit AcceptedECO D02–D29 · 731 positions Benoni DefenseECO A40–E10 · 730 positions King's Indian AttackECO A07–A08 · 641 positions Dutch DefenseECO A40–A99 · 639 positions Alekhine's DefenseECO B02–B05 · 591 positions Giuoco Piano GameECO C50–C54 · 591 positions Catalan OpeningECO E00–E09 · 561 positions Scotch GameECO C44–C56 · 519 positions Scandinavian DefenseECO B01 · 519 positions Petrov's DefenseECO C42–C43 · 423 positions Bogo-Indian DefenseECO E11 · 415 positions Four Knights GameECO C47–C49 · 378 positions Philidor DefenseECO B07–C41 · 358 positions Trompowsky AttackECO A45 · 357 positions Italian GameECO C50–C59 · 332 positions Tarrasch DefenseECO D32–D40 · 321 positions King's Gambit AcceptedECO C30–C39 · 303 positions Torre AttackECO A46–A48 · 273 positions Old Indian DefenseECO A53–A55 · 247 positions King's Pawn OpeningECO A40–C44 · 235 positions Bird's OpeningECO A02–A03 · 219 positions Vienna GameECO C23–C29 · 198 positions Benko Gambit Fully-AcceptedECO A58–A59 · 197 positions Bishop's OpeningECO C20–C28 · 194 positions Benko Gambit Half-AcceptedECO A57–A58 · 185 positions Nimzowitsch-Larsen AttackECO A00–A01 · 171 positions Old Benoni DefenseECO A43–A56 · 166 positions Modern Defense with 1.e4ECO A41–B07 · 153 positions London SystemECO D02 · 135 positions King's Fianchetto OpeningECO A00 · 125 positions Neo-Grünfeld DefenseECO D70–E60 · 125 positions Budapest GambitECO A51–A52 · 124 positions King's Gambit DeclinedECO C30–C32 · 111 positions Semi-Slav Defense AcceptedECO D43–D44 · 107 positions Van Geet OpeningECO A00 · 103 positions Polish OpeningECO A00–A04 · 101 positions Colle SystemECO D04–D05 · 97 positions Richter-Veresov AttackECO D00–D01 · 80 positions Modern Defense with 1.d4ECO A40–D05 · 79 positions Nimzowitsch DefenseECO B00–B01 · 76 positions Owen's DefenseECO B00 · 75 positions Benko Gambit DeclinedECO A57 · 74 positions Nimzowitsch Defense DeclinedECO B00 · 72 positions