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.
Images Analyzed
Chrome Extension Users
Board Detection Accuracy
No Payment Required
Install & Go Instantly
Everything you need to
elevate your game
Six powerful features powered by AI — on desktop, mobile, and in the browser.
Best Move Calculator
Engine-recommended best move with top alternative lines, evaluation scores, and win probability — updated in real time.
Image Recognition
Upload any screenshot or photo of a chess position. Our AI recognizes every piece with 98.7% accuracy and analyzes instantly.
PDF Recognition
Open chess diagrams from PDF books and articles — the engine reads positions directly from the document pages.
Video Recognition
Analyze positions from YouTube videos and live streams — pause any frame and get instant engine analysis.
Auto Website Detection
Automatically detects and analyzes games on Chess.com, Lichess, and more — zero setup required.
Multi-line Analysis
View multiple candidate moves side-by-side with depth, centipawn evaluation, and probability scores at a glance.
How Chrome extension works
Get up and running in under a minute — three simple steps.
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.
Works with your favorite chess sites
See it in action
Watch how ChessExpert analyzes positions in real time — from install to best move in seconds.
Loved by chess players worldwide
See what our users have to say.
“This extension is a game-changer. I use it to study openings on Chess.com and it catches mistakes I'd never spot on my own.”
Marcus T.
“The image recognition is incredible — I just take a photo of a puzzle in my book and get the solution instantly. Saves me hours.”
Elena K.
“I was skeptical at first, but the board detection accuracy is insane. Works perfectly on Lichess and even on YouTube streams.”
David R.
“The PDF reader feature alone is worth it. I can finally study my chess books with engine analysis side by side.”
Sophia L.
“Super easy to install and just works. No account needed, no hassle. Best chess tool I've found and it's completely free.”
James W.
“The mobile app is perfect for analyzing positions during live tournaments. Just point the camera and you get instant analysis.”
Ananya P.