Proton Chess

A chess trainer app that uses a retention tracking algorithm to improve openings knowledge and hopefully improve your performance in chess games. The algorithm tracks your accuracy and mistakes when you play the openings. Every move is tracked. The badges, the badge's color, and the node's color of the opening variation indicates how long can you retain it to memory. If you play more of it, your badge will upgrade. If you play less of it, your badge will also downgrade. The higher the badge the lesser it downgrades. The app also has puzzles, and interactive learning of famous games in chess. You can learn the top openings used by the best players or the legends of the game. You can also curate your own opening repertoire with thousands of variations to choose from. You can also import games from various sources and analyze all of it without limits. It includes also statistics of these games and the openings.