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.