Chess Engine

Unleash professional-level chess analysis on your phone. ChessThink is the all-in-one app to analyze, play, train and explore - for everyone from beginners to grandmasters.

🔥 Powered by the latest Stockfish 18 NNUE - master-strength analysis, fully offline.

📊 Analyze
• Engine evaluation of every move with multiple best lines (MultiPV)
• Game Review: per-side accuracy and move ratings — Brilliant, Best, Inaccuracy, Mistake, Blunder
• Evaluation bar, eval graph and best-move arrows
• Set up any position, or import games via PGN/FEN (Chess960 supported)
• Save analyses and add your own comments

♟ Play & Train
• Play bots from beginner to grandmaster, with hints and time controls
• Tournament ladder and local 2-player mode
• Daily Challenge with a solving streak

📚 Explore
• Automatic opening detection + a browsable openings library
• Master endgames with Syzygy tablebases
• Analysis Explorer - your personal opening book, built from your own analyses
• Chess DNA - a private dashboard of how you play and study

💡 Why ChessThink?
• 100% offline - train anywhere, no internet needed
• No account, no tracking - your games stay on your device
• 10 board themes, available in 8 languages
• Free, supported by ads

Download ChessThink and take your chess to the next level.