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.
B01Scandinavian Defense: Main Line6 plyB01Scandinavian Defense: Marshall Variation6 plyB01Scandinavian Defense: Mieses-Kotroc Variation4 plyB01Scandinavian Defense: Modern Variation4 plyB01Scandinavian Defense: Panov Transfer6 plyB01Scandinavian Defense: Portuguese Gambit6 plyB01Scandinavian Defense: Richter Variation6 plyB01Scandinavian Defense: Schiller-Pytel Variation8 plyB01Scandinavian Defense: Valencian Variation6 plyB01Scandinavian Defense: Zilbermints Gambit3 plyB01Van Geet Opening: Grünfeld Defense6 plyB02Alekhine Defense2 plyB02Alekhine Defense: Brooklyn Variation4 plyB02Alekhine Defense: Buckley Attack5 plyB02Alekhine Defense: Hunt Variation11 plyB02Alekhine Defense: Kmoch Variation9 plyB02Alekhine Defense: Krejcik Variation3 plyB02Alekhine Defense: Maróczy Variation3 plyB02Alekhine Defense: Mokele Mbembe4 plyB02Alekhine Defense: Normal Variation4 plyB02Alekhine Defense: Scandinavian Variation4 plyB02Alekhine Defense: Spielmann Gambit7 plyB02Alekhine Defense: Steiner Variation7 plyB02Alekhine Defense: Sämisch Attack5 plyB02Alekhine Defense: The Squirrel6 plyB02Alekhine Defense: Two Pawns Attack5 plyB02Alekhine Defense: Welling Variation5 plyB03Alekhine Defense5 plyB03Alekhine Defense: Balogh Variation7 plyB03Alekhine Defense: Exchange Variation9 plyB03Alekhine Defense: Four Pawns Attack9 plyB03Alekhine Defense: Hunt Variation9 plyB03Alekhine Defense: Modern Variation11 plyB03Alekhine Defense: O'Sullivan Gambit6 plyB04Alekhine Defense: Modern Variation7 plyB05Alekhine Defense: Modern Variation8 plyB06Modern Defense2 plyB06Modern Defense: Anti-Modern9 plyB06Modern Defense: Bishop Attack5 plyB06Modern Defense: Dunworthy Variation10 plyB06Modern Defense: Fianchetto Gambit4 plyB06Modern Defense: Gurgenidze Defense10 plyB06Modern Defense: Lizard Defense6 plyB06Modern Defense: Masur Gambit10 plyB06Modern Defense: Modern Pterodactyl6 plyB06Modern Defense: Mongredien Defense6 plyB06Modern Defense: Norwegian Defense4 plyB06Modern Defense: Pseudo-Austrian Attack7 plyB06Modern Defense: Semi-Averbakh Variation10 plyB06Modern Defense: Standard Defense6 plyB06Modern Defense: Standard Line5 plyB06Modern Defense: Three Pawns Attack5 plyB06Modern Defense: Two Knights Variation7 plyB06Modern Defense: Westermann Gambit5 plyB06Modern Defense: Wind Gambit5 plyB06Pterodactyl Defense: Austrian8 plyB06Pterodactyl Defense: Central10 plyB06Pterodactyl Defense: Eastern7 plyB06Pterodactyl Defense: Fianchetto8 plyB06Pterodactyl Defense: Sicilian9 ply