Is chess.koz.tv free to use?

Yes, chess.koz.tv is completely free. You can analyze unlimited games from Chess.com, Lichess, or upload PGN files without any subscription or payment.

What chess platforms are supported?

chess.koz.tv supports Chess.com, Lichess, and custom PGN file uploads. You can import games from any of these sources for analysis.

How does the chess analysis work?

We use Stockfish 17, the strongest open-source chess engine. Analysis runs on our servers at depth 15+, with many positions pre-analyzed at depth 20+ from the Lichess database. We provide centipawn evaluations, move classifications, accuracy ratings, and opening detection.

PGN (Portable Game Notation) is a standard format for recording chess games. It includes move notation, player names, date, result, and other metadata. Most chess platforms allow you to export games in PGN format.

How do I analyze a PGN file for free?

Simply paste your PGN text or upload a .pgn file on chess.koz.tv. Our Stockfish 17 engine will analyze every move and provide accuracy ratings, blunder detection, and best move suggestions — completely free with no signup required.

Can I analyze multiple games in one PGN file?

Yes! Our PGN analyzer supports multi-game PGN files. Upload a file with multiple games and we will import and analyze all of them.

What chess engine do you use for PGN analysis?

We use Stockfish 17, the strongest open-source chess engine in the world. Analysis runs on our servers at depth 15+, providing professional-grade evaluation for every position.

Free PGN Analyzer Online - No Signup Required

What is PGN and Why Analyze It?

PGN (Portable Game Notation) is the universal standard for recording and sharing chess games. Every serious chess player encounters PGN files — whether downloading games from tournaments, saving games from online play, or studying grandmaster classics.

A typical PGN file contains the complete move sequence along with metadata like player names, ratings, date, event name, and game result. This standardized format allows chess software to read and display games from any source.

Analyzing your PGN games with a strong engine like Stockfish helps you identify mistakes, discover missed tactics, and understand where you went wrong. Our free PGN analyzer makes this professional-level analysis accessible to everyone.

How to Analyze Your PGN Files

Upload or Paste PGN

Click the "PGN" tab on the homepage and either paste your PGN text directly or upload a .pgn file from your computer.

Stockfish Analysis

Our servers analyze every move using Stockfish 17 at depth 15+. No waiting for your browser to crunch numbers.

Review Your Game

See accuracy ratings, find blunders and missed tactics, view the evaluation graph, and learn from each mistake.

PGN Analyzer Features

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Multi-Game PGN Support

Upload files containing multiple games — we'll import and analyze all of them.

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Stockfish 17 Engine

Analysis powered by the world's strongest open-source chess engine.

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Move Classifications

Every move rated: brilliant, great, best, good, inaccuracy, mistake, or blunder.

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Accuracy Ratings

Get accuracy percentages using the same formula as Lichess.

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Opening Detection

Automatically identifies the opening from our 3,000+ ECO database.

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Evaluation Graph

Visual timeline showing how the advantage shifted throughout the game.

Why Is This PGN Analyzer Free?

We believe every chess player deserves access to quality game analysis, regardless of budget. Unlike Chess.com which limits free users to one analysis per day, chess.koz.tv offers unlimited free analysis with no account required.

Simply upload your PGN files and get the same powerful Stockfish analysis that premium services charge for. No credit card, no signup, no catch — just paste your PGN and start improving your chess.

Frequently Asked Questions

What is a PGN file?▼

PGN (Portable Game Notation) is a standard format for recording chess games. It includes move notation in algebraic format, plus metadata like player names, date, event, and result. Most chess websites and software can export games as PGN files.

How do I get a PGN file of my game?▼

On Chess.com: Go to your game, click the share/download button, select "Download PGN". On Lichess: Open the game, click the download icon. Most chess software also has "Export PGN" or "Save As PGN" options.

Can I analyze multiple games at once?▼

Yes! Our PGN analyzer supports multi-game PGN files. Paste or upload a file containing multiple games and we will import all of them for analysis.

Do I need to create an account?▼

No! chess.koz.tv requires no signup. Just enter a username (for organizing your games) and upload your PGN. Analysis starts immediately.

Ready to Analyze Your Games?

Upload your PGN files and get professional Stockfish analysis — free forever

Start Free PGN Analysis