KaTrain

KaTrain provides a graphical interface for reviewing Go games and playing against the KataGo AI engine. It can highlight moves that resulted in the greatest point loss, generate focused SGF review files, and offer instant feedback on mistakes during a game, allowing the player to retry the move. The tool also supports playing against a variety of weakened AI opponents that exhibit different playing styles.

The application is aimed at Go players who want to improve their skill through detailed analysis and interactive practice. It is useful for both casual learners and more serious competitors who need precise error identification and the ability to experiment with alternative moves in real time.

KaTrain runs on macOS, is released under the MIT license, and is considered stable. It includes features such as keyboard and mouse shortcuts, theme customization, and support for distributed training contributions, while integrating tightly with KataGo for AI‑driven evaluation.