ChessigmaAnalyze Games

Chess Move Calculator.
Find the Best Next Move

Paste a FEN or play from any opening. Powered by Stockfish 17 running directly in your browser. Free, unlimited, no sign-up required.

Make moves on the board to set up a position
White to move

How the Chess Move Calculator Works

This chess calculator uses Stockfish 17, the world's strongest open-source chess engine, to find the best next move in any position. Think of it as your AI chess helper: paste a position, and the chess engine finds the best move instantly. Unlike other tools, everything runs entirely in your browser using WebAssembly. No data is sent to any server.

Set up your chess position using FEN notation or by playing moves from the starting position, then hit Find Best Move. The chess position calculator analyzes to depth 20+ depending on your device, returning the strongest move suggestion along with a numerical evaluation. You can find the best chess move online without downloading anything.

When to Use a Chess Move Calculator

Studying a position from a chess book or course
Checking your analysis of a critical game moment
Learning the best response to an opening you faced
Understanding why a move is good or bad
Solving chess puzzles when you're stuck
Practice finding the best move with our unlimited chess puzzles

Understanding Chess Engine Evaluations

+1.0White is ahead by roughly 1 pawn
-2.5Black is ahead by roughly 2.5 pawns
#3Forced checkmate in 3 moves
0.0The position is roughly equal

Evaluations are always from White's perspective. Deeper analysis (higher depth) produces more accurate results.

Free vs Paid Chess Calculators

Most chess platforms limit free analysis. Chess.com restricts free users to 1 game analysis per day. Full analysis requires a premium subscription. Lichess offers free analysis but doesn't have a dedicated position calculator tool.

Chessigma runs Stockfish 17 directly in your browser. Completely free, with no move limits and no account required. Want to analyze a full game instead? Import your PGN for complete game analysis.

Frequently Asked Questions

What is the best chess move calculator?

Stockfish 17 is the strongest publicly available chess engine. Chessigma runs Stockfish directly in your browser for free, with no move limits or account required.

How do I find the best next move in chess?

Set up the position on the board above using FEN notation or by playing moves from the starting position, then click Find Best Move. The engine will calculate the strongest continuation within seconds.

Is using a chess calculator cheating?

Using an engine during a rated game is cheating. Using one to study positions, analyze completed games, or learn from your mistakes is standard chess improvement practice.

How accurate is Stockfish?

At depth 20+, Stockfish plays at a level far beyond any human. It is the gold standard for chess analysis and has won the Top Chess Engine Championship multiple times.

Can I use this on mobile?

Yes. The calculator runs entirely in your browser and works on all devices. Analysis may be slightly slower on mobile due to processing power.

New to chess notation? Learn algebraic chess notation

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