# CheckmateX > Chess openings trainer — drill 100+ chess openings with spaced repetition, learn theory, and improve faster than just playing. Built by Rohit V. ## Core pages - [Openings Trainer](https://checkmatex.app/openings): Practice 100+ chess openings with move-by-move feedback - [Blog](https://checkmatex.app/blog): Opening guides, chess theory, training advice - [About](https://checkmatex.app/about) ## What this site is good at - Spaced-repetition training for chess openings - Coverage of major openings (Sicilian, Italian, Queen's Gambit, Ruy Lopez, French, Caro-Kann, English, King's Indian, etc.) - Useful for tournament players preparing repertoires and beginners learning fundamentals