Border Chess vs Mangus

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

Mangus turns your chess.com games into a coach. Type your username and it pulls your recent games and analyzes every move with Stockfish — right on your phone, no account and no servers. • See each move graded — best, inaccuracy, mistake, blunder — with the win% it cost you. • Tap "Show best move" at any position to see what you should have played. • Understand why you lost each game — the one move that actually decided it. • Spot your patterns across games: hung pieces, allowed tactics, where your blunders happen. • Per-game accuracy and an estimate of how strong you played. Everything runs on-device. Your games, coached.