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.
B00Goldsmith Defense2 plyB00Goldsmith Defense: Picklepuss Defense4 plyB00Hippopotamus Defense2 plyB00King's Pawn Game1 plyB00Lemming Defense2 plyB00Lion Defense: Lion's Jaw5 plyB00Nimzowitsch Defense2 plyB00Nimzowitsch Defense: Breyer Variation6 plyB00Nimzowitsch Defense: Colorado Countergambit4 plyB00Nimzowitsch Defense: Colorado Countergambit Accepted5 plyB00Nimzowitsch Defense: Declined Variation3 plyB00Nimzowitsch Defense: El Columpio Defense6 plyB00Nimzowitsch Defense: Franco-Nimzowitsch Variation4 plyB00Nimzowitsch Defense: French Connection4 plyB00Nimzowitsch Defense: Hornung Gambit5 plyB00Nimzowitsch Defense: Kennedy Variation4 plyB00Nimzowitsch Defense: Mikenas Variation4 plyB00Nimzowitsch Defense: Neo-Mongoloid Defense4 plyB00Nimzowitsch Defense: Pirc Connection4 plyB00Nimzowitsch Defense: Pseudo-Spanish Variation3 plyB00Nimzowitsch Defense: Scandinavian Variation4 plyB00Nimzowitsch Defense: Wheeler Gambit3 plyB00Nimzowitsch Defense: Williams Variation4 plyB00Nimzowitsch Defense: Woodchuck Variation4 plyB00Owen Defense2 plyB00Owen Defense: Guatemala Defense4 plyB00Owen Defense: Hekili-Loa Gambit6 plyB00Owen Defense: Matovinsky Gambit10 plyB00Owen Defense: Naselwaus Gambit5 plyB00Owen Defense: Smith Gambit5 plyB00Owen Defense: Unicorn Variation6 plyB00Owen Defense: Wind Gambit6 plyB00Pirc Defense2 plyB00Pirc Defense: Roscher Gambit5 plyB00Rat Defense: Antal Defense4 plyB00Rat Defense: Fuller Gambit6 plyB00Rat Defense: Harmonist3 plyB00Rat Defense: Petruccioli Attack3 plyB00Rat Defense: Spike Attack3 plyB00St. George Defense2 plyB00St. George Defense: Polish Variation8 plyB00St. George Defense: San Jorge Variation12 plyB00St. George Defense: Zilbermints Gambit4 plyB00Van Geet Opening: Berlin Gambit7 plyB00Ware Defense2 plyB00Ware Defense: Snagglepuss Defense4 plyB01Scandinavian Defense2 plyB01Scandinavian Defense: Anderssen Counterattack8 plyB01Scandinavian Defense: Blackburne Gambit6 plyB01Scandinavian Defense: Blackburne-Kloosterboer Gambit4 plyB01Scandinavian Defense: Boehnke Gambit6 plyB01Scandinavian Defense: Bronstein Variation10 plyB01Scandinavian Defense: Classical Variation10 plyB01Scandinavian Defense: Grünfeld Variation13 plyB01Scandinavian Defense: Gubinsky-Melts Defense6 plyB01Scandinavian Defense: Icelandic-Palme Gambit6 plyB01Scandinavian Defense: Kiel Variation8 plyB01Scandinavian Defense: Kloosterboer Gambit6 plyB01Scandinavian Defense: Kádas Gambit8 plyB01Scandinavian Defense: Lasker Variation11 ply