In world classic chess championships, prominently the most popular openings played are:
- Sicilian Defense
- Spanish Game (Ruy Lopez)
- French Defense
- Caro-Kann Defense
- English Opening
- Nimzo-Indian Defense
- Queen’s Gambit
- Grunfeld Defense
- King’s Indian Defense
- Slav Defense
Chessbox.in has detailed coverage on these chess openings, please click the opening name for more details.