Chess Blunder Trainer App

1. Install the app on your Android smartphone or on Windows.
2. Easily import your own chess games from various (online) sources such as chess.com or Lichess, or from your personal PGN files.
3. Replay your blunders as personalized puzzles from your games and train to spot better moves.
4. Let the app support you in assessing your moves and get recommendations from the chess engine.
5. Learn from your blunders and improve your chess skills completely for free and without ads!

While the chess blunder trainer app helps you to learn from your own blunders in your played games, you will also need routines to avoid blunders in the first place. One proven approach is the Checks, Captures, and Threats (CCT) rule:

• Checks: Check all checks that you can deliver to the opponent's king. Even checks that do not seem to lead to anything at first glance can open follow-up attacks on closer inspection.
• Captures: Examine all possible captures of enemy pieces. Sometimes, a capture can open up the board or remove a key defender, leading to follow-up attacks.
• Threats: Identify all threats you can make. A threat could be anything from threatening to win material in the next move to creating a strong positional advantage. It forces the opponent to react, e.g., by moving pieces, and may open new attack vectors.
• Take opponent's perspective: Use the CCT rule from your opponent's viewpoint to anticipate possible checks, captures, and threats. Plan for each of these moves.

This chess software was developed as a personal project by Thomas Koeppen. The tool is available as a free Android and Windows app in the Google Play Store. Please reach out via chessblundertrainer@gmail.com with any feedback or questions!

Special thanks to Alex Baker, who has published the chess logic package bishop and the chessboard package squares for flutter. Without those, this app would not have been possible.