Chess AnalyzerProfessional Game Analysis Made Simple
Analyze your chess games like a grandmaster with our free chess analyzer. Powered by Stockfish 15+ NNUE, get instant feedback on your moves, discover tactical mistakes, and receive personalized improvement suggestions. Perfect for players of all levels from beginner to expert.
What Makes Our Chess Analyzer Special?
Mistake Detection
Automatically identifies blunders, mistakes, and inaccuracies with clear explanations
Evaluation Graphs
Visual charts show position evaluation changes throughout the game
Best Move Suggestions
See the best moves with detailed explanations and alternative variations
Detailed Statistics
Accuracy ratings, average centipawn loss, and performance metrics
Comprehensive Analysis Features
🔍 Deep Position Analysis
Our chess analyzer evaluates every position in your game using Stockfish 15+ NNUE, the world's strongest chess engine. Get precise evaluations in centipawns, understand who's winning and by how much at every point in the game.
- Adjustable analysis depth from 10 to 25+ plies
- Multi-PV mode shows multiple best move options
- Real-time evaluation updates as analysis progresses
- Cloud analysis for faster results on complex positions
⚠️ Automatic Mistake Classification
Never miss a learning opportunity. Our analyzer automatically categorizes every suboptimal move and highlights them with color-coded markers:
Blunders
Moves that significantly worsen your position (loss of 2+ pawns)
Mistakes
Moves that clearly worsen your position (loss of 1-2 pawns)
Inaccuracies
Suboptimal moves that slightly worsen your position
📊 Visual Evaluation Graph
See the flow of the game at a glance with our interactive evaluation graph. The graph shows how the position evaluation changed with each move, making it easy to identify critical moments and turning points in your games.
- Click any point on the graph to jump to that position
- Hover to see exact evaluation and move number
- Identify where advantages were gained or lost
- Spot patterns in your play across multiple games
💾 Multiple Import Options
Import your games from any chess platform or format:
File Upload
- Upload PGN files (single or multiple games)
- Drag and drop support
- Batch analysis for multiple games
Text Input
- Paste PGN text directly
- Enter FEN for specific positions
- Manual move entry on board
📤 Export & Share
Save and share your analyzed games in multiple formats:
- Export as annotated PGN with all analysis comments
- Generate PDF analysis reports with diagrams
- Share analysis links with friends and coaches
- Save to your account for later review
How to Use the Chess Analyzer
Import Your Game
Upload a PGN file, paste PGN text, or manually enter your moves. You can analyze games from Chess.com, Lichess, or any other platform.
Configure Analysis Settings
Choose your preferred analysis depth and options. For most games, depth 18-20 provides excellent results. Enable multi-PV to see alternative move options.
Review the Analysis
Navigate through your game move by move. Mistakes are highlighted in red, orange, or yellow. Click on any move to see the best alternative and understand why it's better.
Study and Learn
Focus on critical positions where the evaluation changed significantly. Try to understand the tactical or strategic ideas behind the best moves. Use this knowledge in your future games.
Perfect for All Skill Levels
Beginners
Learn the fundamentals by seeing your mistakes clearly explained:
- ✓ Identify hanging pieces and simple tactics
- ✓ Learn basic opening principles
- ✓ Understand piece activity and development
- ✓ Avoid common beginner mistakes
Intermediate
Refine your game and eliminate weaknesses:
- ✓ Improve tactical pattern recognition
- ✓ Learn strategic concepts and plans
- ✓ Identify positional mistakes
- ✓ Prepare opening repertoires
Advanced
Fine-tune your play to the highest level:
- ✓ Deep opening preparation and novelties
- ✓ Complex endgame analysis
- ✓ Find subtle positional improvements
- ✓ Prepare for specific opponents
Chess Analyzer FAQ
Is the chess analyzer completely free?
Yes! Our chess analyzer is 100% free with no limitations. You can analyze unlimited games with unlimited depth. No registration required, no credit card needed, no hidden costs.
What makes this analyzer better than others?
We combine the world's strongest chess engine (Stockfish 15+ NNUE) with an intuitive, user-friendly interface. Unlike Chess.com which limits free analysis, we offer unlimited deep analysis. Unlike Lichess, we provide more detailed explanations and learning features.
Can I analyze games from Chess.com or Lichess?
Absolutely! Simply export your game as PGN from any chess platform and import it into our analyzer. We support standard PGN format from all major chess websites.
How long does analysis take?
Analysis speed depends on your device and chosen depth. Most games are fully analyzed in 30-60 seconds at depth 20. You can adjust depth for faster results or more accuracy.
What depth should I use?
For most games, depth 18-20 provides excellent analysis. Tactical positions benefit from deeper analysis (22-25+). Simple positions can use lower depth (15-18). Higher depth is more accurate but takes longer.
Can I analyze specific positions instead of full games?
Yes! You can input any position using FEN notation or set up pieces manually on the board. This is perfect for analyzing specific positions, studying tactics, or exploring opening variations.
Does the analyzer explain why moves are mistakes?
Yes! For each mistake, we show the best alternative move and explain the key differences. You can see how the evaluation changes and understand the tactical or strategic ideas involved.
Can I save my analyzed games?
Yes! You can export analyzed games as annotated PGN files, generate PDF reports, or save them to your free account for later review. All export features are completely free.
Is this suitable for beginners?
Absolutely! While powered by a super-strong engine, we present the analysis in a beginner-friendly way. Mistakes are clearly marked, alternatives are shown, and explanations help you understand and improve.
Can I use this on mobile devices?
Yes! Our chess analyzer is fully optimized for mobile phones and tablets. The interface adapts perfectly to smaller screens while maintaining all functionality.
How accurate is the analysis?
Extremely accurate. Stockfish 15+ NNUE is rated over 3500 Elo, far stronger than any human player. At sufficient depth, the analysis is essentially perfect for practical purposes.
Can I analyze multiple games at once?
Yes! You can upload PGN files containing multiple games and analyze them in batch. This is perfect for reviewing all your games from a tournament or training session.
Ready to Analyze Your Games?
Start improving your chess today with professional-grade analysis
Start Analyzing Now →