Chess Position AnalysisEvaluate Any Position with Stockfish
Analyze any chess position instantly with our free position analyzer powered by Stockfish 15+ NNUE. Enter FEN notation, set up pieces manually, or paste a position to get deep computer evaluation, best moves, and winning plans. Perfect for studying specific positions, endgames, middlegame tactics, or preparing for your games. 100% free, no registration required.
Position Analysis Features
Instant Evaluation
Get immediate position evaluation in centipawns. Know exactly who's winning and by how much.
Best Move Suggestions
See the best move for any position with full variation analysis showing the optimal continuation.
FEN Input
Paste FEN notation to instantly load any position. Compatible with all chess software and websites.
Manual Setup
Set up any position by dragging pieces on the board. Perfect for studying theoretical positions.
Deep Analysis
Adjust depth from 10 to 25+ plies. Get grandmaster-level understanding of complex positions.
Multi-PV Analysis
See multiple best move options simultaneously. Compare different plans and strategies.
Common Use Cases
Endgame Study
Set up theoretical endgame positions to understand winning techniques, optimal piece placement, and key move sequences. Essential for improving endgame mastery.
Opening Preparation
Analyze critical opening positions to find the best continuations, understand pawn structures, and prepare for your opponents' lines.
Tactical Puzzles
Input puzzle positions to verify solutions, find alternative winning moves, or understand why certain tactics work.
Game Review
Jump to critical positions from your games to analyze key moments in depth and understand where you went wrong.
How to Use the Position Analyzer
Method 1: Enter FEN Notation
FEN (Forsyth-Edwards Notation) is the standard way to describe chess positions. Most chess software can export FEN.
Just paste the FEN string and click "Analyze Position"
Method 2: Set Up Pieces Manually
- Click "Setup Position" mode
- Drag pieces from the piece palette to the board
- Set the side to move (White or Black)
- Set castling rights and en passant if needed
- Click "Analyze" when ready
Method 3: Load from PGN
Import a game in PGN format, navigate to any move, and analyze that specific position. Perfect for studying positions from your games or master games.
Position Analysis FAQ
Is position analysis free?
Yes! Completely free with unlimited analyses. No registration, no time limits, no hidden costs.
What is FEN notation?
FEN (Forsyth-Edwards Notation) is a standard way to describe any chess position in a single line of text. It includes piece placement, castling rights, en passant, and move counters.
Can I analyze endgame positions?
Absolutely! Position analysis is perfect for studying theoretical endgames. The engine provides perfect play for all endgame positions.
How accurate is the evaluation?
Extremely accurate. Stockfish 15+ NNUE is rated over 3500 Elo. At sufficient depth, evaluations are essentially perfect.
Can I save analyzed positions?
Yes! You can save positions to your account, export as FEN, or share analysis links with others.
What depth should I use?
For most positions, depth 18-20 is sufficient. Complex tactical positions benefit from deeper analysis (22-25+).
Can I analyze positions with illegal moves?
The analyzer will detect illegal positions and alert you. Make sure the position is legal before analyzing.
Does it work for Chess960?
Yes! You can analyze any legal chess position including Chess960 (Fischer Random) positions.
Can I use this for correspondence chess?
You can use it to analyze positions for study, but using computer assistance during actual games is against the rules of most platforms.
How do I interpret the evaluation?
+1.5 means White is better by about 1.5 pawns. -2.0 means Black is better by 2 pawns. 0.0 means equal.