OpenMate vs Border Chess

Learn chess openings, or play chess against a strong, fast engine with built-in coaching and analysis tools. OpenMate runs entirely on your device. No internet connection, no accounts, and no data collection. Everything is local, private, and instant. Designed for both play and improvement, OpenMate combines engine strength with visual guidance and practical coaching to help you understand the game as you play. Features: • Strong, fast engine with instant responses: ~4M nodes per second on an iPhone 16 (half on Low Power Mode), ~2800 ELO at 3s/move! • Fully offline: no network access required • Hint mode with visual coaching: - Opening guidance with move suggestions and lists (multicolor arrows) - Engine-recommended moves (green arrows) - Threat visualization (red arrows) • Built-in opening knowledge to guide early play • Strategy tips with both chess terminology and plain-English explanations • Play as White or Black • Flip the board anytime • Undo moves freely at any point • No clock: play at your own pace without time pressure OpenMate is designed to remove friction and distractions. There are no ads, no sign-ups, and no interruptions. Just chess. Whether you want to practice openings, analyze positions, or simply play strong games offline, OpenMate gives you a focused and responsive experience. Built for iPhone and iPad, tested across devices, and optimized for smooth performance.

Border Chess is chess with room to breathe. The board is 10×10: standard FIDE chess on the inner 8×8, plus one empty square on every side. Kings, queens, and edge pawns can use the border for extra maneuvering — same rules you know, with new tactical possibilities. PLAY VS BOT Challenge Fairy-Stockfish, tuned for the border board. Choose your difficulty and improve your game against a strong computer opponent. PLAY WITH FRIEND Pass-and-play on one iPhone. The board automatically flips each turn so both players see the game from their side. BUILT FOR CHESS PLAYERS • Standard rules: castling, en passant, promotion, check, checkmate, stalemate, 50-move rule • Legal move hints, last-move highlight, and check highlight • Clean, modern board inspired by chess.com • Portrait mode, optimized for iPhone NO ONLINE MULTIPLAYER (YET) v1 is offline on your device — bot mode and local two-player only. No account required. OPEN SOURCE Border Chess is free software under the GNU GPL v3. Source code and license: https://github.com/sahasrarjn/chess-app The bot engine uses Fairy-Stockfish (GPL v3). Chess piece artwork from the Lichess Maestro set. Play in your browser too: https://borderchess.org