Chesszles: Improve your ELO

ALWAYS 100% FREE!

Chesszles turns your real chess games into a personalized training program. Connect your chess.com account, and the app pulls your recent rapid games, runs deep Stockfish analysis on every move, and transforms the results into actionable insights and targeted practice positions.

Most chess apps give you generic puzzles. Chesszles gives you puzzles built from your own mistakes.

ANALYZE YOUR GAMES

Every rapid game you play on chess.com is automatically fetched and analyzed move by move. See where you went wrong, where you played brilliantly, and how your accuracy breaks down across the opening, middlegame, and endgame. No manual imports, no PGN files — just enter your username and go.

KNOW YOUR WEAKNESSES

The Analytics tab gives you four swipeable insight cards that paint a clear picture of your chess:

• Rating Trends: Track your rapid rating over time and spot patterns in your improvement.
• Repertoire Analysis: See win rates for every opening you play, with your worst-performing lines highlighted so you know exactly what to study.
• Performance by Phase: Find out whether your opening, middlegame, or endgame is holding you back, with percentile benchmarks against similarly-rated players.
• Biggest Issues: Your blunders are classified into categories like missed tactics, positional errors, and endgame mistakes, displayed as clear bar charts so you can prioritize your training.

TRAIN ON YOUR BLUNDERS

The Train tab pulls positions directly from your analyzed games where you made critical mistakes. Solve them as puzzles to build pattern recognition in exactly the areas where you need it most. Filter by solved or unsolved, by theme, or by game phase to structure your practice sessions.

START EACH DAY WITH A FOCUS

The Home tab gives you a daily training focus based on your most pressing weaknesses, along with a curated set of positions to work through. No guesswork about what to study — the app tells you.

BUILT FOR SERIOUS IMPROVEMENT

Chesszles is not a content library or a social platform. It is a focused tool for players who want to get better at chess by understanding their own games. The analysis is powered by Stockfish, the strongest open-source chess engine in the world. Blunder classification uses advanced pattern recognition to sort your mistakes into meaningful categories.

Whether you are rated 800 or 1800, Chesszles meets you where you are and shows you the clearest path forward.