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.
C44King's Pawn Game: Dresden Opening5 plyC44King's Pawn Game: Pachman Wing Gambit5 plyC44King's Pawn Game: Schulze-Müller Gambit7 plyC44King's Pawn Game: Tayler Opening5 plyC44Latvian Gambit: Clam Gambit7 plyC44Ponziani Opening5 plyC44Ponziani Opening: Caro Gambit8 plyC44Ponziani Opening: Jaenisch Counterattack6 plyC44Ponziani Opening: Leonhardt Variation8 plyC44Ponziani Opening: Neumann Gambit7 plyC44Ponziani Opening: Ponziani Countergambit6 plyC44Ponziani Opening: Romanishin Variation6 plyC44Ponziani Opening: Réti Variation6 plyC44Ponziani Opening: Spanish Variation7 plyC44Ponziani Opening: Steinitz Variation8 plyC44Ponziani Opening: Vukovic Gambit10 plyC44Scotch Game5 plyC44Scotch Game: Benima Defense8 plyC44Scotch Game: Cochrane Variation13 plyC44Scotch Game: Cochrane-Shumov Defense18 plyC44Scotch Game: Göring Gambit7 plyC44Scotch Game: Hanneken Variation18 plyC44Scotch Game: Haxo Gambit8 plyC44Scotch Game: Lolli Variation6 plyC44Scotch Game: Napoleon Gambit9 plyC44Scotch Game: Relfsson Gambit7 plyC44Scotch Game: Scotch Gambit7 plyC44Scotch Game: Sea-Cadet Mate19 plyC44Scotch Game: Vitzthum Attack11 plyC45Scotch Game7 plyC45Scotch Game: Alekhine Gambit9 plyC45Scotch Game: Blumenfeld Attack11 plyC45Scotch Game: Braune Variation9 plyC45Scotch Game: Classical Variation8 plyC45Scotch Game: Fraser Variation9 plyC45Scotch Game: Ghulam-Kassim Variation11 plyC45Scotch Game: Gottschall Variation24 plyC45Scotch Game: Horwitz Attack9 plyC45Scotch Game: Malaniuk Variation8 plyC45Scotch Game: Meitner Variation13 plyC45Scotch Game: Mieses Variation11 plyC45Scotch Game: Modern Defense10 plyC45Scotch Game: Paulsen14 plyC45Scotch Game: Paulsen Attack13 plyC45Scotch Game: Paulsen Variation9 plyC45Scotch Game: Potter Variation9 plyC45Scotch Game: Romanishin Variation10 plyC45Scotch Game: Rosenthal Variation18 plyC45Scotch Game: Schmidt Variation8 plyC45Scotch Game: Steinitz Variation8 plyC45Scotch Game: Tartakower Variation11 plyC46Three Knights Opening5 plyC46Three Knights Opening: Schlechter Variation8 plyC46Three Knights Opening: Steinitz Defense6 plyC46Three Knights Opening: Steinitz-Rosenthal Variation9 plyC46Three Knights Opening: Winawer Defense6 plyC47Four Knights Game6 plyC47Four Knights Game: Glek System7 plyC47Four Knights Game: Gunsberg Variation7 plyC47Four Knights Game: Halloween Gambit7 ply