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.
D00Blackmar-Diemer Gambit Declined: Langeheinicke Defense8 plyD00Blackmar-Diemer Gambit Declined: O'Kelly Defense8 plyD00Blackmar-Diemer Gambit Declined: Vienna Defense8 plyD00Blackmar-Diemer Gambit Declined: Weinsbach Defense8 plyD00Blackmar-Diemer Gambit: Blackmar Gambit5 plyD00Blackmar-Diemer Gambit: Diemer-Rosenberg Attack5 plyD00Blackmar-Diemer Gambit: Fritz Attack5 plyD00Blackmar-Diemer Gambit: Lemberger Countergambit6 plyD00Blackmar-Diemer Gambit: Netherlands Variation6 plyD00Blackmar-Diemer Gambit: Rasa-Studier Gambit7 plyD00Blackmar-Diemer Gambit: Reversed Albin Countergambit6 plyD00Blackmar-Diemer Gambit: Zeller Defense6 plyD00Blackmar-Diemer Gambit: von Popiel Gambit7 plyD00Queen's Pawn Game2 plyD00Queen's Pawn Game: Accelerated London System3 plyD00Queen's Pawn Game: Chigorin Variation3 plyD00Queen's Pawn Game: Hübsch Gambit5 plyD00Queen's Pawn Game: Levitsky Attack3 plyD00Queen's Pawn Game: Mason Attack3 plyD00Queen's Pawn Game: Stonewall Attack5 plyD00Queen's Pawn Game: Zurich Gambit3 plyD01Rapport-Jobava System5 plyD01Richter-Veresov Attack5 plyD01Richter-Veresov Attack: Boyce Defense6 plyD01Richter-Veresov Attack: Malich Gambit11 plyD01Richter-Veresov Attack: Richter Variation7 plyD01Richter-Veresov Attack: Two Knights System7 plyD01Richter-Veresov Attack: Veresov Variation7 plyD02London System: Poisoned Pawn Variation9 plyD02Queen's Gambit Declined: Baltic Defense8 plyD02Queen's Pawn Game: Anti-Torre4 plyD02Queen's Pawn Game: Chandler Gambit7 plyD02Queen's Pawn Game: Chigorin Variation4 plyD02Queen's Pawn Game: Krause Variation4 plyD02Queen's Pawn Game: Levitsky Attack8 plyD02Queen's Pawn Game: London System5 plyD02Queen's Pawn Game: Symmetrical Variation4 plyD02Queen's Pawn Game: Zilbermints Countergambit6 plyD02Queen's Pawn Game: Zukertort Variation3 plyD03Queen's Pawn Game: Torre Attack5 plyD04Queen's Pawn Game: Colle System5 plyD05Queen's Pawn Game: Colle System6 plyD05Queen's Pawn Game: Zukertort Variation9 plyD05Rubinstein Opening9 plyD05Rubinstein Opening: Bogoljubow Defense14 plyD05Rubinstein Opening: Classical Defense14 plyD05Rubinstein Opening: Semi-Slav Defense13 plyD06Queen's Gambit3 plyD06Queen's Gambit Declined: Austrian Attack6 plyD06Queen's Gambit Declined: Austrian Defense4 plyD06Queen's Gambit Declined: Baltic Defense4 plyD06Queen's Gambit Declined: Marshall Defense4 plyD06Queen's Gambit Declined: Zilbermints Gambit4 plyD07Queen's Gambit Declined: Chigorin Defense4 plyD08Queen's Gambit Declined: Albin Countergambit4 plyD09Queen's Gambit Declined: Albin Countergambit9 plyD10Slav Defense4 plyD10Slav Defense: Diemer Gambit5 plyD10Slav Defense: Exchange Variation5 plyD10Slav Defense: Slav Gambit7 ply