Openings
1,811 openings in the database
Browse the full opening catalog. Search by name or ECO code (e.g. “Najdorf” or “B90”), or filter by volume A–E. Click any opening to see its position on the board and the grandmaster videos played in that line.
Why do so many openings share the same code? (how ECO works)
Every chess opening is filed under one of just 500 ECO codes(A00–E99), grouped into five volumes:
- A — Flank openings (English 1.c4, 1.Nf3, irregular lines)
- B — Semi-open games except the French (Sicilian, Caro-Kann…)
- C — Open games 1.e4 e5 and the French 1.e4 e6
- D — Closed & semi-closed 1.d4 d5 (Queen’s Gambit, Grünfeld…)
- E — Indian defences (Nimzo-Indian, King’s Indian…)
A single code is a family: e.g. C50 covers the whole Italian Game / Giuoco Piano complex, so the Giuoco Piano, Giuoco Pianissimo, Hungarian Defense and Two Knights all live under C50. That’s why one code maps to many named variations — the code is the family, the name is the specific line. ChessEyes shows you both.
A44Benoni Defense: Semi-Benoni6 plyA45Amazon Attack: Siberian Attack5 plyA45Canard Opening3 plyA45Indian Defense2 plyA45Indian Defense: Accelerated London System3 plyA45Indian Defense: Gedult Attack5 plyA45Indian Defense: Gibbins-Weidenhagen Gambit3 plyA45Indian Defense: Gibbins-Weidenhagen Gambit Accepted4 plyA45Indian Defense: Lazard Gambit4 plyA45Indian Defense: Maddigan Gambit4 plyA45Indian Defense: Omega Gambit3 plyA45Indian Defense: Paleface Attack5 plyA45Indian Defense: Pawn Push Variation3 plyA45Indian Defense: Reversed Chigorin Defense4 plyA45Indian Defense: Tartakower Attack3 plyA45Paleface Attack3 plyA45Queen's Pawn Game: Chigorin Variation4 plyA45Queen's Pawn Game: Veresov5 plyA45Trompowsky Attack3 plyA45Trompowsky Attack: Borg Variation6 plyA45Trompowsky Attack: Classical Defense4 plyA45Trompowsky Attack: Edge Variation5 plyA45Trompowsky Attack: Poisoned Pawn Variation7 plyA45Trompowsky Attack: Raptor Variation5 plyA46Döry Defense4 plyA46Indian Defense: Czech-Indian4 plyA46Indian Defense: Knights Variation3 plyA46Indian Defense: London System5 plyA46Indian Defense: Polish Variation4 plyA46Indian Defense: Spielmann-Indian4 plyA46Indian Defense: Wade-Tartakower Defense4 plyA46Queen's Pawn Game: Torre Attack10 plyA46Queen's Pawn Game: Veresov Attack7 plyA46Torre Attack: Classical Defense5 plyA46Torre Attack: Wagner Gambit7 plyA46Yusupov-Rubinstein System5 plyA47Indian Defense: Schnepper Gambit6 plyA47Marienbad System8 plyA47Marienbad System: Berg Variation11 plyA47Pseudo Queen's Indian Defense4 plyA48East Indian Defense4 plyA48Indian Defense: Colle System8 plyA48London System5 plyA48Queen's Pawn Game: Barry Attack7 plyA48Queen's Pawn Game: Torre Attack10 plyA48Torre Attack: Fianchetto Defense5 plyA49Indian Defense: Przepiorka Variation5 plyA50Indian Defense: Medusa Gambit4 plyA50Indian Defense: Normal Variation3 plyA50Indian Defense: Pyrenees Gambit4 plyA50Mexican Defense4 plyA50Mexican Defense: Horsefly Gambit7 plyA50Queen's Indian Accelerated4 plyA50Slav Indian4 plyA51Indian Defense: Budapest Defense4 plyA52Indian Defense: Budapest Defense6 plyA53Old Indian Defense4 plyA53Old Indian Defense: Aged Gibbon Gambit5 plyA53Old Indian Defense: Czech Variation6 plyA53Old Indian Defense: Janowski Variation6 ply