Knight & Castle
Échecs contre l’IA Stockfish
Free · Designed for iPad. Not verified for macOS.
Challenge a world-class chess engine. Five levels from Beginner to Expert, play as White or Black, take-back support, fully offline. Great for learning tactics.
Knight & Castle is a clean, focused chess game where you take on Stockfish, one of the strongest chess engines in the world. Whether you are just learning the rules or hunting for a real challenge, there is a difficulty level for you.
FEATURES
• Five difficulty levels — Beginner, Easy, Medium, Hard, and Expert. Beginner plays gently so newcomers can win; Expert plays at full strength.
• Play as White or Black — choose Black and the board flips while the engine opens as White.
• Take-back (undo) — retract your last move, perfect for practice.
• Powered by Stockfish — enjoy strong, natural moves from a proven open-source engine.
• Play fully offline — no account, no sign-in, no internet required to play.
• Clean, distraction-free board with legal-move highlights, last-move markers, and check indicators.
• Tap-to-move controls with pawn promotion, resign, and instant new game.
• Universal app for iPhone and iPad.
• Available in English, Japanese, German, and French.
HOW TO PLAY
Tap a piece to see its legal moves, then tap a highlighted square to move. Promote pawns, put the engine in check, and go for checkmate. Change the difficulty or your side any time.
Great for learning openings, practicing tactics, or a relaxing game on the go. Download Knight & Castle and make your move.
This app contains ads.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Choose to play as White or Black (the board flips for Black).
Take-back (undo) support.
Available in French.
The developer, KAZUYUKI TAJIMA, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- KAZUYUKI TAJIMA
- Size
- 7.7 MB
- Category
- Board
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
English and 3 more
- English, French, German, Japanese
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © 2026 Kazuyuki Tajima