Chess Solver
A chess solver is a tool that analyzes any chess position and returns the strongest move. Stuck in a position? Paste it into the chess solver and get the best chess move in under a second. Our chess best move calculator (also great as a chess next move calculator or next move chess finder) runs Stockfish 18 at full strength, so the answer you see is the same answer grandmasters would find — just way faster.
Four Ways to Load a Position
The chess best move finder accepts positions in four formats so you never have to recreate a board manually. Pick whichever is fastest for what you have in front of you:
Paste a FEN
Copy the FEN string from any chess site and drop it into the solver. Works instantly.
Load a PGN
Paste a full game in PGN format to step through every move with the chess move calculator running alongside.
Scan a Screenshot
Take a picture of any board — book diagram, video frame, opponent's screen — and the solver converts it to a playable position (Premium).
Ask the AI Coach
Click any position and our AI chess helper writes a plain-English explanation of what makes each move strong or weak.
Why Players Keep Coming Back
- Stockfish 18 runs at full 3500+ ELO strength — the same engine top grandmasters trust for preparation
- The AI chess helper explains every recommendation, turning the solver into a learning tool instead of a crutch
- Loads directly in your browser with no installer, no plugin, and no account required
- Accepts FEN, PGN, drag-and-drop setup, or screenshot upload — whichever is fastest
- Free daily limit is generous, and Premium removes every cap including access to the Chrome extension and desktop app
Free — no signup required
Frequently Asked Questions
What is this tool?
A free chess solver that finds the strongest continuation in any position. It uses Stockfish 18, the world's top chess engine, and explains each move in plain language through the AI Coach.
How do I set up a position?
Four ways: drag pieces on the interactive board, paste a FEN string, load a PGN game, or upload a screenshot. The Screenshot Scanner detects the pieces automatically and creates the position for you.
How accurate is the analysis?
Stockfish 18 is rated over 3500 ELO — more than 600 points stronger than any grandmaster. It evaluates millions of positions per second and is the same engine top players use for tournament preparation.
Is it free?
Yes. The free tier lets you analyze any position with up to 5 AI coaching explanations per day. Premium unlocks full engine depth, unlimited AI coaching, Screenshot Scanner, and advanced features like Human Mode and Smart Tactics.
What is FEN notation?
FEN is a one-line text format that describes any chess position. Copy it from any chess site (most platforms let you right-click the board to copy FEN) and paste it here to analyze that exact position.
Can I analyze a full game?
Yes. Paste a PGN game and the solver walks through every move, highlighting mistakes and brilliant moves with accuracy scores.