Free AI chess coach
Chess Masti AI is a free AI chess coach that helps you analyze games, ask follow-up questions, and train from your own mistakes. Stockfish evaluates the position, Masti explains it in plain language, and every claim is checked before you see it. It's free, with no credit card. Paste a PGN or FEN and your session starts immediately.
What is the best free AI chess coach?
The best free AI chess coach is one that does three things: tells you what went wrong, explains why in plain language, and gives you something to practice. Most chess tools stop at the first step.
Chess Masti AI does all three. Stockfish handles evaluation accuracy. Masti handles the explanation. And your biggest mistakes automatically become puzzles you can drill until the pattern sticks. All of it is free.
What can you do for free?
Game analysis
Paste any PGN. Get move-by-move evaluation with plain-language explanations from Masti.
Coach chat
Ask follow-up questions about any position. Masti holds context across your whole game.
Mistake puzzles
Your worst blunders become drills. Practice the exact positions you keep getting wrong.
Opponent scouting
See your opponent's opening tendencies, weak squares, and patterns before you play.
How Chess Masti AI works
Import your game or position
Paste a PGN from Lichess, Chess.com, or anywhere else. Or paste a FEN string to start from a specific position.
Stockfish evaluates every move
The analysis runs in your browser, so no game data is sent to a server for the engine work. Every move gets a centipawn score and classification.
Masti explains what happened
Masti reads the Stockfish output and explains each critical moment: what the plan was, where it broke down, and what you should have played instead. Every claim is checked before it reaches you.
Why not just use a chess engine?
Stockfish can tell you the best move in any position. What it cannot do is explain why the move is best, what theme you missed, or how to avoid the same mistake next time.
A chess engine is a calculator. Chess Masti AI is a calculator with a teacher attached. The engine provides the ground truth; Masti translates it into something you can act on. And because Masti reads Stockfish output before explaining it, the explanations stay accurate.
Chess Masti AI vs other free chess analysis tools
| Tool | Best for | AI explanations | Training loop |
|---|---|---|---|
| Chess Masti AI | Analysis, coaching and practice | Yes (Masti) | Mistake puzzles and chat |
| DecodeChess | Deep position explanation | Yes | No |
| Lichess analysis | Engine evaluation | No | No |
| Noctie | Human-style sparring | No | No |
Competitor features were verified at time of writing and may change.
Frequently asked questions
What is the best free AI chess coach?
Chess Masti AI is a free AI chess coach. Stockfish evaluates every move, Masti explains it in plain language, your blunders become practice puzzles, and you can ask as many follow-up questions as you like.
Is Chess Masti AI free to use?
Yes. Chess Masti AI and its coaching features are free and unlimited.
How does Chess Masti AI work?
You import a game PGN or paste a FEN position. Stockfish evaluates each move in your browser. Masti reads the evaluation and explains what happened, why the move was a mistake, and what you should have played instead. You can ask follow-up questions and convert your worst mistakes into practice puzzles.
What is the difference between Chess Masti AI and a chess engine?
A chess engine like Stockfish tells you the best move and gives a numerical score. Chess Masti AI uses Stockfish for accuracy but then explains the position in plain language: the plan behind the move, the theme you missed, and what to train next. It is the difference between a calculator and a teacher.
Can I analyze my Lichess or Chess.com games with Chess Masti AI?
Yes. Paste the PGN from any platform (Lichess, Chess.com, or any other source) into the analysis board. You can also paste a FEN string to analyze a specific position.
Does Chess Masti AI verify its chess explanations?
Yes. Every claim is checked before you see it: tactical and positional claims are compared with Stockfish's output.
Is Chess Masti AI a better free option than DecodeChess?
They serve different needs. DecodeChess is strong at explaining a single position in depth. Chess Masti AI adds a training loop: it turns your mistakes into drills, lets you ask follow-up questions in conversational language, and includes opponent scouting. If you want to close the gap between understanding and improvement, Chess Masti AI is worth trying.
Try the free AI chess coach
Paste a PGN or FEN and start learning. Chess Masti's coaching features are free.