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.
C68Ruy Lopez: Exchange Variation7 plyC69Ruy Lopez: Exchange Variation9 plyC70Ruy Lopez: Bird's Defense Deferred8 plyC70Ruy Lopez: Morphy Defense6 plyC71Ruy Lopez: Morphy Defense8 plyC71Ruy Lopez: Noah's Ark Trap16 plyC72Ruy Lopez: Closed18 plyC72Ruy Lopez: Morphy Defense9 plyC73Ruy Lopez: Morphy Defense11 plyC74Ruy Lopez: Morphy Defense9 plyC75Ruy Lopez: Morphy Defense10 plyC76Ruy Lopez: Morphy Defense12 plyC77Ruy Lopez: Morphy Defense9 plyC77Ruy Lopez: Wormald Attack16 plyC78Ruy Lopez: Brix Variation10 plyC78Ruy Lopez: Central Countergambit10 plyC78Ruy Lopez: Morphy Defense9 plyC78Ruy Lopez: Rabinovich Variation20 plyC79Ruy Lopez: Morphy Defense10 plyC79Ruy Lopez: Steinitz Defense Deferred14 plyC80Ruy Lopez: Morphy Defense11 plyC80Ruy Lopez: Open10 plyC81Ruy Lopez: Open17 plyC82Ruy Lopez: Open17 plyC83Ruy Lopez: Open18 plyC84Ruy Lopez: Closed10 plyC85Ruy Lopez: Closed11 plyC86Ruy Lopez: Closed11 plyC87Ruy Lopez: Closed12 plyC88Ruy Lopez: Closed13 plyC88Ruy Lopez: Noah's Ark Trap20 plyC89Ruy Lopez: Marshall Attack16 plyC90Ruy Lopez: Closed16 plyC91Ruy Lopez: Closed17 plyC92Ruy Lopez: Closed17 plyC93Ruy Lopez: Closed18 plyC94Ruy Lopez: Closed18 plyC95Ruy Lopez: Closed19 plyC96Ruy Lopez: Closed19 plyC97Ruy Lopez: Closed18 plyC98Ruy Lopez: Closed24 plyC99Ruy Lopez: Closed25 plyD00Amazon Attack3 plyD00Blackmar-Diemer Gambit3 plyD00Blackmar-Diemer Gambit Accepted8 plyD00Blackmar-Diemer Gambit Accepted: Bogoljubow Defense10 plyD00Blackmar-Diemer Gambit Accepted: Euwe Defense10 plyD00Blackmar-Diemer Gambit Accepted: Gunderam Defense10 plyD00Blackmar-Diemer Gambit Accepted: Holwell Defense10 plyD00Blackmar-Diemer Gambit Accepted: Kaulich Defense10 plyD00Blackmar-Diemer Gambit Accepted: Pietrowsky Defense10 plyD00Blackmar-Diemer Gambit Accepted: Ritter Defense10 plyD00Blackmar-Diemer Gambit Accepted: Ryder Gambit9 plyD00Blackmar-Diemer Gambit Accepted: Schlutter Defense10 plyD00Blackmar-Diemer Gambit Accepted: Teichmann Defense10 plyD00Blackmar-Diemer Gambit Accepted: Ziegler Defense10 plyD00Blackmar-Diemer Gambit Declined: Brombacher Countergambit8 plyD00Blackmar-Diemer Gambit Declined: Elbert Countergambit8 plyD00Blackmar-Diemer Gambit Declined: Gedult Defense8 plyD00Blackmar-Diemer Gambit Declined: Lamb Defense8 ply