Your Personal
Chess Move Calculator
ChessExpert automatically analyzes positions on popular chess websites, books, images, videos and calculates the best moves in real time — right inside your browser or mobile app.
Everything you need to elevate your game
Powerful analysis features packed into one simple extension.
Best Move Calculator
Get the engine-recommended best move and top alternative lines with evaluation scores updated in real time.
Image Recognition
Upload a screenshot or photo of any chess position and ChessExpert will recognize the pieces and analyze it instantly.
PDF Recognition
Open chess diagrams from PDF books and articles — the engine reads positions directly from the document.
Video Recognition
Analyze chess positions from YouTube videos and live streams — pause a frame and get instant analysis.
Auto Website Detection
Automatically detects and analyzes games on Chess.com, Lichess, and more — no manual setup required.
Multi-line Analysis
View multiple candidate moves side-by-side with depth, evaluation, and probability scores at a glance.
How Chrome extension works
Get up and running in under a minute.
Install the Extension
Add ChessExpert to Chrome from the Web Store. It works instantly — no account or sign-up needed.
Play on Your Favorite Site
Open a game on Chess.com, Lichess, or any supported site. ChessExpert detects the board automatically.
See the Best Moves
The engine evaluates the position and displays the best moves, alternative lines, and win probabilities live.
Ready to play smarter?
Join thousands of players who use ChessExpert to elevate their game. Download our Chrome extension today!
Get ChessExpert for ChromeHow mobile app works
Scan a digital chessboard from a screen or book with your phone and get instant analysis.
Download the App
Get ChessExpert free from the App Store or Google Play. No account required — just install and go.
Point Your Camera
Point your camera at a digital chessboard on a screen or in a book, and the app detects the position automatically.
Get Instant Analysis
See the best moves, evaluation bar, and candidate lines or adjust settings — all in real time on your phone.
Take it on the go
Analyze chess positions anytime, anywhere with our mobile app. Scan chess boards with your camera and get instant analysis.
How eBook Reader works
Analyze every diagram in your chess books and articles — just upload a PDF and let ChessExpert do the rest.
Upload Your Chess Book
Drag and drop any PDF — a chess book, article, or puzzle collection. No size limit, no account needed.
Click on Any Diagram
Browse through the pages. Click a chess diagram and ChessExpert automatically extracts the position from the page.
Get Instant Analysis
The engine loads the board position and shows you the best moves, candidate lines, and evaluation scores immediately.
