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.
D10Slav Defense: Winawer Countergambit6 plyD11Slav Defense: Bonet Gambit7 plyD11Slav Defense: Breyer Variation7 plyD11Slav Defense: Modern Line5 plyD11Slav Defense: Quiet Variation7 plyD12Slav Defense: Quiet Variation8 plyD13Slav Defense: Exchange Variation8 plyD14Slav Defense: Exchange Variation12 plyD15Slav Defense: Alekhine Variation9 plyD15Slav Defense: Chebanenko Variation8 plyD15Slav Defense: Geller Gambit9 plyD15Slav Defense: Schlechter Variation8 plyD15Slav Defense: Süchting Variation8 plyD15Slav Defense: Three Knights Variation7 plyD15Slav Defense: Two Knights Attack8 plyD16Slav Defense: Alapin Variation9 plyD16Slav Defense: Smyslov Variation10 plyD16Slav Defense: Soultanbeieff Variation10 plyD16Slav Defense: Steiner Variation10 plyD17Slav Defense: Czech Variation10 plyD18Slav Defense: Czech Variation11 plyD19Slav Defense: Czech Variation15 plyD20Queen's Gambit Accepted4 plyD20Queen's Gambit Accepted: Accelerated Mannheim Variation5 plyD20Queen's Gambit Accepted: Central Variation6 plyD20Queen's Gambit Accepted: Linares Variation10 plyD20Queen's Gambit Accepted: Old Variation5 plyD20Queen's Gambit Accepted: Saduleto Variation5 plyD20Queen's Gambit Accepted: Schwartz Defense6 plyD21Queen's Gambit Accepted: Alekhine Defense7 plyD21Queen's Gambit Accepted: Godes Variation6 plyD21Queen's Gambit Accepted: Gunsberg Defense6 plyD21Queen's Gambit Accepted: Normal Variation5 plyD21Queen's Gambit Accepted: Rosenthal Variation6 plyD21Queen's Gambit Accepted: Slav Gambit6 plyD22Queen's Gambit Accepted: Alekhine Defense6 plyD23Queen's Gambit Accepted6 plyD23Queen's Gambit Accepted: Mannheim Variation7 plyD24Queen's Gambit Accepted9 plyD24Queen's Gambit Accepted: Bogoljubow Defense9 plyD24Queen's Gambit Accepted: Gunsberg Defense13 plyD24Queen's Gambit Accepted: Showalter Variation7 plyD25Queen's Gambit Accepted: Janowski-Larsen Variation8 plyD25Queen's Gambit Accepted: Normal Variation7 plyD25Queen's Gambit Accepted: Smyslov Variation8 plyD25Queen's Gambit Accepted: Winawer Defense8 plyD26Queen's Gambit Accepted: Classical19 plyD26Queen's Gambit Accepted: Classical Defense10 plyD26Queen's Gambit Accepted: Normal Variation8 plyD27Queen's Gambit Accepted: Classical Defense12 plyD27Queen's Gambit Accepted: Furman Variation14 plyD28Queen's Gambit Accepted: Classical26 plyD28Queen's Gambit Accepted: Classical Defense13 plyD29Queen's Gambit Accepted: Classical Defense16 plyD30Queen's Gambit Declined4 plyD30Queen's Gambit Declined: Capablanca Variation8 plyD30Queen's Gambit Declined: Semmering Variation12 plyD30Queen's Gambit Declined: Spielmann Variation10 plyD30Queen's Gambit Declined: Stonewall Variation12 plyD30Queen's Gambit Declined: Tarrasch Defense6 ply