ChessSolve

Live Stockfish engine analysis, evaluation bar, and best-move arrows shown directly on your board on popular chess sites.

Real-time Stockfish analysis with best-move arrows, an evaluation bar and move grades, drawn on the board you are already studying. ChessSolve brings the strongest open-source chess engine to your analysis board. Arrows, evaluation and move grades appear as you step through a position, so you learn why a move is strong. ⚡ CORE FEATURES • Best-Move Arrows: Stockfish's top candidates drawn on the board, colour-coded and ranked by strength. Free: 2 arrows. Premium: up to 4. • Live Evaluation Bar: See who stands better and spot momentum shifts at a glance. • Move Classifications: Brilliant (!!), Great (!), Best, Excellent, Inaccuracy, Mistake and Blunder badges on the board. • Adjustable Engine: Depth 12 on the free plan, up to depth 16 on Premium. • FEN & PGN Export: Copy any position or game in one click. 🛠️ GET STARTED 1. Install the extension. 2. Click the ChessSolve icon in your browser toolbar and create a free account to activate the engine. 3. Open an analysis board, then press Start. 🎯 BUILT FOR • Opening preparation — explore candidate lines on the board. • Post-game review — step through a finished game and watch the evaluation shift. • Position study — understand why the engine prefers a move. Free accounts include a daily analysis allowance; paid plans raise the limit, the search depth and the number of arrows. FAIR PLAY: ChessSolve is a study tool. Using engine assistance in a game against another person breaks the fair-play rules of every major chess site. Use it on analysis boards and for post-game review. ChessSolve is an independent product, not affiliated with, endorsed by or sponsored by Chess.com LLC or Lichess. "Chess.com" and "Lichess" are trademarks of their respective owners, referenced only to describe the sites this extension works on.