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.
A40Englund Gambit Declined: Reversed French3 plyA40Englund Gambit Declined: Reversed Krebs4 plyA40Englund Gambit Declined: Reversed Mokele Mbembe5 plyA40Englund Gambit: Felbecker Gambit6 plyA40Englund Gambit: Hartlaub-Charlick Gambit4 plyA40Englund Gambit: Main Line6 plyA40Englund Gambit: Mosquito Gambit4 plyA40Englund Gambit: Soller Gambit4 plyA40Englund Gambit: Soller Gambit Deferred6 plyA40Englund Gambit: Stockholm Variation7 plyA40Englund Gambit: Zilbermints Gambit6 plyA40Horwitz Defense2 plyA40Horwitz Defense: Zilbermints Gambit4 plyA40Kangaroo Defense4 plyA40Kangaroo Defense: Keres Defense5 plyA40Mikenas Defense2 plyA40Mikenas Defense: Cannstatter Variation6 plyA40Mikenas Defense: Lithuanian Variation6 plyA40Mikenas Defense: Pozarek Gambit8 plyA40Modern Defense: Beefeater Variation10 plyA40Modern Defense: Lizard Defense5 plyA40Montevideo Defense4 plyA40Polish Defense2 plyA40Polish Defense: Spassky Gambit Accepted5 plyA40Pterodactyl Defense: Central8 plyA40Pterodactyl Defense: Fianchetto8 plyA40Pterodactyl Defense: Queen Pterodactyl7 plyA40Queen's Pawn Game1 plyA40Queen's Pawn Game: Anglo-Slav Opening4 plyA40Queen's Pawn Game: Modern Defense2 plyA40Slav Indian: Kudischewitsch Gambit6 plyA40Zaire Defense8 plyA41Modern Defense6 plyA41Modern Defense: Neo-Modern Defense6 plyA41Old Indian Defense3 plyA41Queen's Pawn Game2 plyA41Rat Defense: English Rat4 plyA41Robatsch Defense8 plyA41Wade Defense4 plyA41Zukertort Opening: Wade Defense8 plyA42Modern Defense: Averbakh System7 plyA42Modern Defense: Averbakh Variation9 plyA42Modern Defense: Kotov Variation8 plyA42Modern Defense: Randspringer Variation8 plyA42Pterodactyl Defense10 plyA42Pterodactyl Defense: Central10 plyA43Benoni Defense: Benoni Gambit4 plyA43Benoni Defense: Benoni Gambit Accepted3 plyA43Benoni Defense: Benoni-Indian Defense4 plyA43Benoni Defense: Benoni-Staunton Gambit5 plyA43Benoni Defense: Cormorant Gambit4 plyA43Benoni Defense: French Benoni5 plyA43Benoni Defense: Hawk Variation6 plyA43Benoni Defense: Old Benoni2 plyA43Benoni Defense: Snail Variation4 plyA43Benoni Defense: Woozle6 plyA43Benoni Defense: Zilbermints-Benoni Gambit3 plyA43Indian Defense: Pseudo-Benko6 plyA43Queen's Pawn Game: Liedmann Gambit5 plyA44Benoni Defense: Old Benoni4 ply