Chess Book - chess game analysis

Add dynamic analysis to your chess platform and improve your skills in no time !

Chess Book brings engine analysis to Chess.com so you can understand positions as you play and review. See the evaluation, explore suggested lines, and get feedback on your moves — without leaving the board. WHAT YOU GET • Game review — open Chess Book to revisit games, step through moves, and study lines • Engine lines — browse the principal variation and preview it on the board • Eval bar — follow the position score as the game unfolds • Move feedback — ratings like Best, Excellent, Inaccuracy, Mistake, and Blunder after you move • Feedback arrows — see what the engine preferred when you missed the mark • Adjustable depth — stronger analysis when you want it, faster when you don’t • Elo limit — optionally keep suggestions closer to human strength instead of full engine power • Quick toggle — turn analysis on or off from the popup, with an optional hotkey HOW TO USE 1. Install Chess Book and open Chess.com 2. Click the extension icon to enable analysis and set depth / Elo 3. Launch Chess Book on the board and toggle Line, Eval, and Feedback as you like 4. Play or review — use the analysis panel to learn from every position Built for players who want clearer feedback and faster improvement on Chess.com.