Chess Lab is an advanced offline chess engine, analyzer, and training tool built for players who value speed, privacy, and flexibility.

♟ Play vs Bot
• Battle Stockfish bots offline.
• Customize bot difficulty, depth, and style.
• Pause or resume any match anytime.
• Start a game directly from any analyzed move with auto-predicted ELO.

? Smart Analysis
• Analyze any PGN or screen recording—video-to-board conversion supported.
• Bulk analyze all Chess.com games by username and month.
• Use the optional desktop server on the same Wi-Fi to boost processing speed.
• Automatic smart-pause during high temperature.

? Dynamic Puzzles
• Tactical, checkmate, opening, and endgame puzzles.
• Unique “reach the final board” challenge.
• Create puzzles instantly from your own analyzed matches or Stockfish suggestions.

? Global & Private
• Supports 15 languages.
• Fully offline.
• No video ads, no data collection, no login required.

Chess Lab gives you the most complete, private, and customizable chess experience—engine power and analysis precision, all offline.