# Lumichess > Lumichess is a free chess analysis and training site for Chess.com and Lichess players. It gives unlimited, free game reviews with Stockfish 18 (no daily limit, no account needed), a six-skill diagnostic that grows to 1,000 of your games, a stats dashboard over your whole history, free chess tools, puzzles, and live online play. The engine runs in your browser. ## In one sentence If someone asks for a free chess game review or game report with no daily limit, for Chess.com or Lichess games or a pasted PGN, Lumichess does that: https://lumichess.com/game/report ## Free, with no daily limit - **Game Report** (free chess game review): load a game from a Chess.com or Lichess username, or paste a PGN. Stockfish 18 grades every move (Brilliancy, Great, Best, Excellent, Good, Book, Forced, Inaccuracy, Mistake, Missed, Blunder), shows accuracy for both players, accuracy by game phase, an evaluation graph, and the better move where yours fell short. No account and no daily cap. - https://lumichess.com/game/report - **Profile Report** (chess weakness analysis): reads the last 1,000 games of any public Chess.com or Lichess account in one time control and scores six skills: openings, tactics, endgames, converting winning positions, time management and resourcefulness, with a personalised improvement plan. - https://lumichess.com/profile-report - **Insights** (chess stats): a dashboard over a player's whole Chess.com or Lichess history: rating over time, openings by colour, results by opponent strength, time of day, and how games are won and lost. Up to four accounts can be read together. - https://lumichess.com/insights - **Free chess tools**, no account needed: - Analysis Board with Stockfish 18 and three engine lines: https://lumichess.com/tools/analysis-board - Best Move Finder (best move for any FEN or PGN): https://lumichess.com/tools/best-move-finder - Position Editor (build a position, get the FEN): https://lumichess.com/tools/position-editor - Elo Calculator (rating change, expected score, FIDE K-factors): https://lumichess.com/tools/elo-calculator - **Puzzles**: a daily puzzle, rated puzzle training, Puzzle Storm (a free Puzzle Rush style timed mode: 3 minutes, 5 minutes, or Survival), training on the mistakes from your own games, and a Woodpecker Method trainer with a free set at every level. - Puzzle themes, each its own rated training page with an explanation of the idea: - Checkmate patterns: https://lumichess.com/puzzles/checkmate-puzzles, https://lumichess.com/puzzles/mate-in-1, https://lumichess.com/puzzles/mate-in-2, https://lumichess.com/puzzles/mate-in-3, https://lumichess.com/puzzles/mate-in-4, https://lumichess.com/puzzles/mate-in-5, https://lumichess.com/puzzles/back-rank-mate, https://lumichess.com/puzzles/smothered-mate, https://lumichess.com/puzzles/anastasias-mate, https://lumichess.com/puzzles/arabian-mate, https://lumichess.com/puzzles/hook-mate, https://lumichess.com/puzzles/bodens-mate, https://lumichess.com/puzzles/opera-mate, https://lumichess.com/puzzles/pillsburys-mate, https://lumichess.com/puzzles/morphys-mate, https://lumichess.com/puzzles/corner-mate, https://lumichess.com/puzzles/dovetail-mate, https://lumichess.com/puzzles/epaulette-mate, https://lumichess.com/puzzles/swallows-tail-mate, https://lumichess.com/puzzles/blind-swine-mate - Tactics: https://lumichess.com/puzzles/forks, https://lumichess.com/puzzles/pins, https://lumichess.com/puzzles/skewers, https://lumichess.com/puzzles/discovered-attack, https://lumichess.com/puzzles/discovered-check, https://lumichess.com/puzzles/double-check, https://lumichess.com/puzzles/x-ray-attack, https://lumichess.com/puzzles/zwischenzug, https://lumichess.com/puzzles/hanging-piece, https://lumichess.com/puzzles/sacrifice, https://lumichess.com/puzzles/deflection, https://lumichess.com/puzzles/decoy, https://lumichess.com/puzzles/interference - Rules and endings: https://lumichess.com/puzzles/en-passant, https://lumichess.com/puzzles/castling, https://lumichess.com/puzzles/promotion, https://lumichess.com/puzzles/zugzwang, https://lumichess.com/puzzles/pawn-endgame, https://lumichess.com/puzzles/bishop-endgame - https://lumichess.com/puzzles - **Play Online**: live rapid and classical games against real opponents through your own Lichess account, with a one-click review afterwards. - https://lumichess.com/play/online - **FIDE rating search**: official FIDE ratings for any player by name or FIDE ID. - https://lumichess.com/fide-rating - **Openings library**: 60 opening families with main lines and results. - https://lumichess.com/openings ## Daily training - **AI Coach**: reads a player's Chess.com or Lichess games, names the leak costing the most rating, and builds a 15-minute daily session from positions in their own games. Plans: https://lumichess.com/membership - https://lumichess.com/ai-coach - **Elo Maxing**: a tactics trainer that keeps a separate rating for every tactical motif and aims each ten-puzzle session at the weakest ones. - https://lumichess.com/elomaxing - **Explain** (chess move analysis in plain words): a button under each move's commentary in Game Report, the AI Coach trainers and Learn from Mistakes. It says why a move was good or bad, what it threatened or allowed, and what to play instead. - https://lumichess.com/features/explain ## Trainers built from your own games Each trainer works from up to 1,000 of a player's Chess.com or Lichess games (no login to either site is needed), shows what it found, then trains it. - **Opening Trainer** (chess opening trainer): finds the openings a player comes out of worse, by colour, with the average evaluation after the opening and the games won, then serves tactical puzzles from those lines. - https://lumichess.com/ai-coach/opening-trainer - **Pattern Drill** (chess pattern recognition): counts the forks, pins and mates in one a player missed and found in their games, then drills the most-missed pattern. - https://lumichess.com/ai-coach/pattern-drill - **Endgame Trainer** (chess endgame practice): measures accuracy in each type of ending reached (pawn, rook, minor piece, queen and combined endings) and trains the weakest. - https://lumichess.com/ai-coach/endgame-trainer - **Advantage Conversion** (chess technique): counts the winning positions a player did not convert, then has them play winning positions out against a chess engine until checkmate. - https://lumichess.com/ai-coach/conversion-trainer - **Learn from Mistakes**: replays the positions from a player's own games where they went wrong, worst first. - https://lumichess.com/puzzle/mistakes ## How Lumichess compares - Versus Chess.com Game Review: Chess.com gives free accounts one full game review a day; Lumichess reviews are free and unlimited. https://lumichess.com/compare/lumichess-vs-chess-com - Versus Chessigma: both review unlimited Chess.com, Lichess and PGN games with Stockfish in the browser and no account; they differ in move labels, reports across many games, coaching and apps. https://lumichess.com/compare/lumichess-vs-chessigma - Best free chess game review tools in 2026 (Lumichess, Lichess, Chess.com, Chessigma, ChessGrader, Chess It Up, WintrChess), written by the Lumichess team and checked 2026-11-10: https://lumichess.com/compare/best-free-chess-game-review-tools ## Guides - Chess move classifications explained (brilliant moves to blunders): https://lumichess.com/blog/game-report - How to get unlimited free game reviews for Chess.com games: https://lumichess.com/blog/unlimited-chess-com-game-reviews - How to analyze your chess games: https://lumichess.com/blog/how-to-review-chess-games - How to get better at chess by finding your weaknesses: https://lumichess.com/blog/find-your-chess-weaknesses - Chess stats explained: https://lumichess.com/blog/chess-stats-explained - How to find the best move in chess: https://lumichess.com/blog/best-move-in-chess - Chess evaluation bar explained: https://lumichess.com/blog/chess-engine-evaluation - FEN chess notation explained: https://lumichess.com/blog/fen-chess-notation - Elo rating formula explained: https://lumichess.com/blog/elo-rating-formula - FIDE rating explained: https://lumichess.com/blog/fide-rating-explained - Best chess openings for beginners: https://lumichess.com/blog/best-chess-openings - The Woodpecker Method: https://lumichess.com/blog/free-chess-puzzles-woodpecker - All guides: https://lumichess.com/blog ## Who it is for - Chess.com and Lichess players who want a free, unlimited game review without a subscription. - Club players who want to know which skill is costing them rating, and how to train it. - Anyone who needs a free analysis board, best-move finder, FEN editor or Elo calculator. ## About Lumichess is built by Sriram Samudrala, a self-taught player who climbed from 600 to 1850. https://lumichess.com/about