Overview
RookSac is a free web app for players who want more than a single-game review. Import games from Chess.com or Lichess, choose your filters, and analyze an entire set with Stockfish. RookSac surfaces recurring tactical, opening, and endgame patterns, then turns those findings into a prioritized study plan.
The experience is designed for quick self-review: no login, subscription, or game upload is required. Analysis runs locally in the browser, keeping the workflow fast and private.
What You Can Do
- Analyze individual games or entire filtered collections from Chess.com and Lichess.
- Filter by time control, color, result, rating range, opponent rating, date range, and game order.
- Tune Stockfish settings such as depth, engine threads, MultiPV lines, and fast bulk review mode.
- Find recurring mistakes instead of treating every game as an isolated review.
- Generate a concrete study plan for the openings, tactics, and endgames to work on next.
- Load a saved analysis and continue reviewing without starting over.
Privacy-First Analysis
RookSac keeps analysis free and private by running Stockfish inside the user's browser. It does not require a Chess.com or Lichess password, and it does not upload private game files for processing.