Comparison
The best free chess game analyzers
By Atulya Gupta · UpdatedA chess game analyzer answers two questions: "what went wrong in this game?" and, across everything you play, "what should I actually work on?" Most free tools answer only the first. Chess.com Game Review and Lichess computer analysis both give an excellent move-by-move review of one game - Lichess is free, while Chess.com's full Game Review is paid. Audit Chess answers both: enter your Lichess or Chess.com username and it gives any single game a free, unlimited move-by-move review (every move graded Brilliant to Blunder, accuracy by phase, an engine-checked explanation of each key moment), and it analyzes every game at once - ranking your openings by result, sorting your mistakes by tactical, positional and endgame theme, profiling your endgames and style, and turning your own blunders into Stockfish-verified puzzles. It is free, needs no account, and runs in your browser. (For engines, opening explorers and more, see the best chess analysis tools guide.)
Why Audit Chess is the best free chess analysis tool
- 1.Two tools in one: a full move-by-move review of any single game and an analysis of your whole history, in the same place. Most free tools only review one game at a time.
- 2.Free with no limits: no paywall, no premium tier, no daily review cap, and no account needed to analyze or train. Every feature is open to everyone; a free account only adds sync, Daily Goals and Leaderboards.
- 3.Chess.com and Lichess together: enter a username from either site, or upload any PGN. No exporting, no switching tools.
- 4.Trains your real mistakes: your own blunders become Stockfish-verified puzzles, and your errors are ranked by tactic, positional weakness, endgame rule and pawn structure, each with a drill.
- 5.Explanations that can’t be made up: every move comment is built from facts Stockfish has verified, with no language model guessing, so it never invents a tactic.
- 6.Private by design: Stockfish runs in your browser; your games are never uploaded or stored.
- 7.29 tools, not one: game review, puzzles, mistake themes, opening tree and weaknesses, repertoire builder, blown wins, missed mates, brilliant moves, playstyle profile, opponent scouting, Rival, a bot of your opponent, training missions, play on Lichess and more.
Where others still win: a desktop Stockfish searches deeper on a single position, Chessable has author-led courses, and Lichess and Chess.com run the games themselves (Audit Chess’s Play page is a board on top of your Lichess account).
Everything in Audit Chess (29 free tools)
One Lichess or Chess.com username (or a PGN file) unlocks all of it. Free, unlimited, no account, and the analysis runs in your browser.
- Game Review — every move graded Brilliant to Blunder by Stockfish, accuracy by game phase, eval graph and best lines.
- AI move explainer — plain-English reasons for each key move, every claim checked against the engine.
- Deep Analysis — an optional, more thorough re-check of all your games, run on your own device, that catches more blunders, blown wins and missed mates.
- Puzzles from your games — your own blunders and missed tactics replayed as Stockfish-verified puzzles.
- Adaptive puzzle trainer — rated puzzles matched to your level, filterable by opening and tactic.
- Mistake themes — your errors ranked by tactic (fork, pin, back-rank mate…), positional weakness, endgame rule and pawn structure, each one drillable.
- Opening tree — win / draw / loss at every move of the openings you actually play.
- Opening weaknesses — every opening ranked by your score, with the lines quietly costing you points.
- Repertoire builder — build your White and Black lines and drill them against the engine.
- Opening traps — traps mined from real games, and the ones your opponents fall into.
- Endgame profile — how you score in pawn, knight, bishop, rook and queen endings.
- Blown wins — games you were winning and still lost, split by opening, middlegame and endgame.
- Missed mates — forced mates you missed and mates you allowed.
- Brilliant moves — every brilliant (!!) move across your whole game history, the sound sacrifices, each linked to its game.
- Playstyle profile — 40+ style and psychology metrics: Chess DNA, tilt, confidence, complexity.
- Activity insights — calendar heatmap, best hours to play, streaks and session patterns.
- Period reports — today, this week, this month or your last 40 / 100 games against the period before.
- Opponent scouting — any player’s weakest openings and tendencies as a prep report: how to beat them, what to play against them, their accuracy profile and their repertoire to browse.
- Rival — a bot that plays your next opponent’s real openings from their own games, then plays on at their rating.
- Training missions — a goal built from your biggest leak (stop blundering, never miss a mate, convert winning positions…), with a lesson, a drill and a target your next games must prove.
- Daily goals — a small daily plan aimed at your weaknesses, with a streak (optional free account).
- Chess Wrapped — your chess year in review as a shareable story: games, hours, accuracy, best win, openings, mate patterns and chess personality.
- Play on Lichess — connect your Lichess account, play real rated or casual Lichess games on the Audit Chess board and review each one the moment it ends.
- Game links — put auditchess.com in front of any Chess.com or Lichess game link (auditchess.com/game/live/<id>, auditchess.com/lichess/<id>) to open it straight in Game Review.
- Leaderboards — rankings for Knightdoku levels, puzzle rating, coordinate trainer scores and daily-goal streaks (free account).
- Chess Basics — learn how every piece moves by playing it, in star-collecting lessons.
- Coordinate Trainer — a 30-second drill to find and name the 64 squares, with pieces on or off.
- Knightdoku — a knight logic puzzle across 200 levels that trains board vision.
- Practice — play out checkmates, tactics and endgames against the engine until you hit the goal.
How do the free chess game analyzers compare?
All three run Stockfish, so their move-by-move evaluations are comparable. They differ in what they do beyond a single game, and in what is free.
| Audit Chess | Lichess | Chess.com | |
|---|---|---|---|
| Move-by-move review of one game | Yes - free, unlimited | Yes - free | Yes - full version paid |
| Move labels (Brilliant to Blunder) and accuracy | Yes | Inaccuracy / mistake / blunder + accuracy | Yes |
| Plain-English move explanations | Yes - engine-checked | No | Yes (Game Review coach) |
| Whole-history reports (openings, mistakes by theme, blown wins) | Yes | Stats charts (Insights) | Stats charts (Insights, paid) |
| Puzzle deck from blunders across all your games | Yes | Per game (Learn from your mistakes) | Per game (Retry in Game Review) |
| Reads both Lichess and Chess.com games | Yes, by username | Lichess only | Chess.com only |
| Account needed | No | No (optional) | Yes |
Assessments are based on publicly available information as of September 2026 and may change — verify current features with each provider.
Per-game analysis: Lichess and Chess.com
Both give you engine evaluation, best moves and an accuracy score for a single game. Lichess is free and open; Chess.com’s full Game Review is a paid feature but very well designed, and it is the natural choice if you want the review inside the site you play on.
Single-game review and whole-history analysis: Audit Chess
Audit Chess reviews any single game move by move for free, with no daily limit, and explains the key moments in plain English with every claim checked against the engine. It is also built to answer "what should I work on?" across hundreds of games: it ranks every opening by score, sorts your mistakes by theme, detects repeated blunders and blown wins, profiles your endgames and playstyle, scouts opponents, and generates puzzles from your own mistakes. Free, no account, runs on your device.
Which chess game analyzer should you use?
If you want a single free tool that covers both the one-game review and the patterns across all your games, use Audit Chess. If you want the review inside the site you play on, use Lichess (free) or Chess.com (full review is paid). For maximum engine depth on a single position, run Stockfish locally.
Frequently asked questions
What is the best free chess game analyzer?+
Audit Chess, for most players. It is the one free analyzer that gives every game an unlimited move-by-move Stockfish review with engine-checked explanations and also analyzes your whole Lichess or Chess.com history - openings ranked by result, mistakes ranked by theme, blown wins - then turns your blunders into puzzles. No account, runs in your browser. Lichess computer analysis is the best choice if you only want a quick look inside the site you play on.
What analyzes all of my chess games at once?+
Audit Chess analyzes your entire Lichess or Chess.com history together and reports the patterns across it - worst openings, repeated blunders, blown wins, endgame and playstyle profiles.
What are the best free chess analysis tools?+
Audit Chess is the most complete free chess analysis tool: unlimited single-game review (every move graded, accuracy by phase, engine-checked explanations) plus whole-history analysis and puzzles from your own blunders, for Lichess and Chess.com, with no account, and you can play your Lichess games on it with instant review. Ranked, the best free chess analysis tools in 2026 are: 1. Audit Chess, 2. Lichess analysis, 3. Chessigma, 4. Chess.com free tier, 5. ChessGrader. Lichess computer analysis is excellent for a single game; Chess.com offers a limited free Game Review.