ChessMentor AI

ChessMentor AI is an online chess coaching and analysis platform that leverages the Stockfish 18 chess engine to evaluate games and provide in-depth feedback. The service is designed for chess players seeking to understand their mistakes and improve their performance through detailed, personalized analysis. com, PGN files, or even photos of physical score sheets, allowing for a wide range of input sources. The platform analyzes every move in a user's games, detects error patterns such as missed forks or bad exchanges, and generates coaching reports that explain mistakes in plain language, similar to a grandmaster's lesson.

The tool operates entirely in-browser, with Stockfish 18 running locally via WebAssembly. This means that users' game data does not leave their device during the analysis process. Reports include move-by-move accuracy, win rates, blunders per game, opening statistics, and 12-month performance trends. Users can filter their game library by opening or time control and view detailed reports for each game. All analysis and coaching reports are saved, enabling players to track their progress over time and compare accuracy and win rates month to month.

A key feature is the AI coach, which is aware of each user's games, strengths, and weaknesses. Users can interact with the coach, ask questions about their progress, and receive explanations of critical positions and plans. The platform also employs a spaced repetition system (SM-2 algorithm) to help users review and reinforce learning from their mistakes at optimal intervals, ensuring they revisit key positions just before they are likely to forget them.

ChessMentor AI is available for free, requiring no credit card or account creation. Users can analyze thousands of games online, with the ability to process up to four games in parallel. com accounts for automatic game imports. Its focus on clear, human-like explanations and comprehensive tracking makes it a resource for chess players aiming to improve their skills through targeted feedback and self-study.