SabioChess - Chess.com & Lichess Reviewer

One-click instant game review and Stockfish analysis sidebar for completed Chess.com and Lichess games.

Analyze your Chess.com and Lichess games instantly with SabioChess — 100% free, unlimited, private chess reviews powered by on-device Stockfish and real-time AI voice coaching. Tired of daily limits and expensive chess subscriptions? SabioChess seamlessly integrates directly into Chess.com and Lichess.org. Whenever a game ends, an orange "Review on SabioChess" button appears on your game-over screen. Click it to immediately slide open an in-depth analysis sidebar with deep Stockfish engine evaluations, blunder detection, accuracy scores, and spoken AI coaching — with zero subscriptions, paywalls, or account requirements. ━━━━━━━━━━━━━━━━━━━━━ KEY FEATURES ━━━━━━━━━━━━━━━━━━━━━ • 1-Click Game Review: Auto-detects completed matches on Chess.com and Lichess.org with zero manual PGN copy-pasting. • Local-First Stockfish WASM: Deep engine analysis runs multithreaded directly inside your browser Web Workers — zero server lag, zero cloud queues. • Real-Time AI Voice Coach: Listen to spoken move explanations, tactical opportunities, and key blunder breakdowns as you review. • 7-Tier Move Classifications: Clear move categorization including Brilliant (!!), Great (!), Best (★), Inaccuracies, Mistakes, and Blunders (??). • Interactive Slide-Over Drawer: Review moves side-by-side with your game or expand into full-screen mode anytime. • Master Opening Theory: Contextual opening book insights, variation exploration, and evaluation momentum charts. • 100% Free & Private: No sign-ups, no logins, no paywalls, and zero telemetry or game tracking. ━━━━━━━━━━━━━━━━━━━━━ HOW TO USE ━━━━━━━━━━━━━━━━━━━━━ 1. Play or open any completed game on Chess.com or Lichess.org. 2. Look for the orange "REVIEW ON SABIOCHESS" button on the post-game screen. 3. Click to slide open the instant Stockfish analysis sidebar and review your game! ━━━━━━━━━━━━━━━━━━━━━ PRIVACY & PERMISSIONS ━━━━━━━━━━━━━━━━━━━━━ SabioChess is built with a privacy-first, client-side architecture: - Zero elevated background permissions. - All engine computations run 100% locally on your computer. - No cookies, passwords, or personal credentials are ever accessed or sent to external servers. Open source on GitHub under GPL v3. Web App: https://sabiochess.com Support & Feedback: https://github.com/IrishJohnDeRoxas/sabiochess