Border Chess vs Chess Coach

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

Learning chess? Start here. ChessCoach is built for players who want to actually get better — not just play. Every move you make is graded instantly by Stockfish, a real chess engine, so you know right away whether it was good, and a free hint explains why in plain English. No jargon, no guessing. LEARN, DON'T JUST PLAY New to chess or stuck at the same level? Structured lessons walk you through tactics patterns, endgame basics, and the ideas behind common openings — the "why," not just the "what." IMMEDIATE FEEDBACK ON EVERY MOVE Play a move and instantly see how it graded: brilliant, good, inaccuracy, mistake, or blunder. No more finishing a game and wondering where it went wrong — you find out the moment it happens. FREE HINTS, EVERY TURN Stuck on what to play? Get the engine's best move and a one-line explanation of why — completely free, no daily limit, no paywall. It's like having a coach look over your shoulder. PLAY OFFLINE, ANYTIME The engine, hints, move grading, puzzles, and lessons all run right on your device — no internet connection needed for any of that. Practice on a plane, on the subway, anywhere. (Board scanning and the Pro written coach do need a connection.) MASTER YOUR OPENINGS Learn opening names live as you play, then build a real repertoire with the Opening Trainer — understand the plans behind the moves you've been copying. SHARPEN YOUR TACTICS WITH PUZZLES Solve curated puzzles pulled from real games, drill checkmates, and race the clock in Puzzle Rush — free, with no daily cap. SCAN ANY BOARD, ANYWHERE Photograph a physical chessboard mid-game and pick up play instantly — no manual setup, no re-entering every piece. REVIEW EVERY GAME After each game, get a full move-by-move breakdown: your blunders, your brilliancies, and exactly where the game turned. WHY IT'S DIFFERENT Most "AI chess coach" apps are chatbots that guess at good moves. ChessCoach is built on Stockfish, a real chess engine that calculates millions of positions per second — every hint and grade comes straight from what the engine actually found, running on your device. No hallucinated analysis. FEATURES • Instant move grading, every move — free, works offline • Free best-move hints with a plain-English "why," every turn, no daily limit • Structured lessons: tactics, endgames, and opening ideas for beginners through intermediates • Opening Trainer and live opening names as you play • Puzzle Rush and curated tactics/checkmate puzzles, no daily cap • Full post-game move review with blunder detection • Photograph any physical board and play from it instantly • Adjustable engine strength — play from beginner to grandmaster level • Clean, distraction-free board with light and dark themes ChessCoach Pro adds a written coach on top of the free engine grading — unlimited chat, board scanning, and puzzle packs — for players who want to go even deeper into why they're winning or losing.