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.
C33King's Gambit Accepted: Gaga Gambit5 plyC33King's Gambit Accepted: Lopez-Gianutio Countergambit12 plyC33King's Gambit Accepted: Mason-Keres Gambit5 plyC33King's Gambit Accepted: Orsini Gambit5 plyC33King's Gambit Accepted: Paris Gambit5 plyC33King's Gambit Accepted: Schurig Gambit5 plyC33King's Gambit Accepted: Stamma Gambit5 plyC33King's Gambit Accepted: Tartakower Gambit5 plyC33King's Gambit Accepted: Tumbleweed5 plyC33King's Gambit Accepted: Villemson Gambit5 plyC34King's Gambit Accepted: Becker Defense6 plyC34King's Gambit Accepted: Bonsch-Osmolovsky Variation6 plyC34King's Gambit Accepted: Fischer Defense6 plyC34King's Gambit Accepted: Gianutio Countergambit6 plyC34King's Gambit Accepted: Greco Gambit12 plyC34King's Gambit Accepted: King's Knight's Gambit5 plyC34King's Gambit Accepted: MacLeod Defense6 plyC34King's Gambit Accepted: Schallopp Defense6 plyC34King's Gambit Accepted: Wagenbach Defense6 plyC35King's Gambit Accepted: Cunningham Defense6 plyC36King's Gambit Accepted: Abbazia Defense8 plyC36King's Gambit Accepted: Modern Defense6 plyC37King's Gambit Accepted: Australian Gambit9 plyC37King's Gambit Accepted: Blachly Gambit8 plyC37King's Gambit Accepted: Double Muzio Gambit13 plyC37King's Gambit Accepted: Ghulam-Kassim Gambit9 plyC37King's Gambit Accepted: King's Knight's Gambit7 plyC37King's Gambit Accepted: Kotov Gambit11 plyC37King's Gambit Accepted: Lolli Gambit9 plyC37King's Gambit Accepted: McDonnell Gambit9 plyC37King's Gambit Accepted: Middleton Countergambit14 plyC37King's Gambit Accepted: Muzio Gambit9 plyC37King's Gambit Accepted: Muzio Gambit Accepted12 plyC37King's Gambit Accepted: Quaade Gambit7 plyC37King's Gambit Accepted: Rosentreter Gambit7 plyC37King's Gambit Accepted: Salvio Gambit9 plyC37King's Gambit Accepted: Silberschmidt Gambit14 plyC37King's Gambit Accepted: Sörensen Gambit9 plyC38King's Gambit Accepted: Greco Gambit19 plyC38King's Gambit Accepted: Hanstein Gambit9 plyC38King's Gambit Accepted: Mayet Gambit11 plyC38King's Gambit Accepted: Philidor Gambit9 plyC38King's Gambit Accepted: Traditional Variation8 plyC39King's Gambit Accepted: Allgaier10 plyC39King's Gambit Accepted: Allgaier Gambit9 plyC39King's Gambit Accepted: Kieseritzky10 plyC39King's Gambit Accepted: Kieseritzky Gambit9 plyC39King's Gambit Accepted: King's Knight's Gambit7 plyC40Elephant Gambit4 plyC40Elephant Gambit: Maróczy Gambit6 plyC40Elephant Gambit: Paulsen Countergambit6 plyC40Elephant Gambit: Wasp Variation8 plyC40Gunderam Defense4 plyC40King's Knight Opening3 plyC40King's Pawn Game: Busch-Gass Gambit4 plyC40King's Pawn Game: Damiano Defense4 plyC40King's Pawn Game: Gunderam Defense6 plyC40King's Pawn Game: Gunderam Gambit4 plyC40King's Pawn Game: La Bourdonnais Gambit7 plyC40King's Pawn Game: McConnell Defense4 ply