Chess Opener PRO

Chess Opener, the ultimate chess opening trainer, helps to explore new openings, build your repertoire and train the opening variations.


  • The Encyclopedia of Chess Openings (ECO)

  • Opening tree with game statistics

  • Repertoires of 100+ famous grandmasters

  • Powerful chess engine

  • Import and export openings in PGN format

  • Add openings and their variations to your repertoire

  • Interactive trainer to memorize your openings

  • Track your training progress

  • No ads

  • Works offline


Search in the Encyclopedia of Chess Openings, browse the opening tree, explore the repertoires of famous chess grandmasters, or ask the chess engine to find the best moves. Swipe left or right to switch between the exploration features in any position.


Use the explorations features and add your favorite opening lines to your repertoire or import your openings in PGN format from other chess programs. You can always edit the names of your openings and organize them in your repertoire later.


A simple and efficient method to memorize variations of openings in your repertoire. You can train either white’s moves or black’s moves only or both. Chess Opener tracks your progress and shows your stats.