Check’d vs AGENTIC CHESS

Your move, in every message. Check'd brings real chess to iMessage. Start a match inside any conversation, send moves as interactive messages, and keep playing at your own pace. No accounts, no servers, no spam—just pure chess that lives in your chat history. WHAT'S NEW & FUN • Daily Puzzles — 4,462 unique puzzles, daily rotation, UTC‑based streaks, and fastest‑time leaderboards. • Tactical Alerts — Smart on‑board warnings for hanging pieces, forks, pins, and mate threats (consistent in iMessage + companion app). • Big UI refresh — Modern redesigns for Play vs Computer, iMessage, Tutorials, Opening Guide, and FEN export/import. • Seasonal magic — Halloween, Valentine, Easter, and Winter overlays with animated effects. • Name onboarding — A fun, animated “Chess Oracle” name reveal for new and existing players. • Promotion knows the script — Auto‑promotion follows the puzzle’s expected move (Q/R/B/N) when you’re on the correct line. WHY YOU'LL LOVE CHECK'D • Seamless iMessage play — Moves send as messages and update instantly for both players. • Play vs Computer — Practice anytime with smart difficulty and helpful hints. • Interactive tutorials — Learn castling, en passant, and checkmates with mini‑games. • Full chess rules — Castling, en passant, promotions, 50‑move rule, and threefold repetition. • Replay & history — Browse finished games, replay moves, and jump to key moments. • Shareable recap — Create a beautiful recap card with opening, result, rating change, and mini‑board. • Privacy‑first by design — All game state stays on‑device and in the message thread. • Seasonal flair — Snow, hearts, pumpkins, and Easter effects (toggleable). • Fully localized — Available in 12 languages. GET STARTED 1. Install Check'd from the iMessage App Store. 2. Open any conversation and tap the Check'd icon. 3. Make your first move and send. That’s it. PLAY YOUR WAY Enjoy quick casual games or long, thoughtful matches. Check'd is built for real‑life schedules—play when you can, keep the thread alive, and finish the game in days if you want. COMPANION APP Check'd also includes a companion app with extra info, guides, stats, analysis tools, and settings outside iMessage. ACCESSIBILITY Check'd is designed to be usable by everyone: • Full VoiceOver support — Every menu button, chess square, and piece is labeled for screen readers. • Dynamic Type — Text scales with your system font size preferences. • Haptic feedback — Feel confirmation on moves and alerts for invalid actions. • High contrast pieces — Clear distinction between white and black pieces on all board themes. PRO UPGRADE Unlock advanced insights and power features with Check'd Pro: • Takeback requests with smooth slide‑back animation. • Full analytics dashboard: win/loss/draw breakdown, activity heatmap (games & moves), Elo rating + peak + trend, win streaks, shortest/longest game, and piece‑balance records. • Performance insights: white/black performance split and favorite opponents. • Opening insights: full openings list and win‑rate breakdowns. • Critical moments + Journey replay: best move, blunder, and missed‑chance markers with quick playback. • Move assistance toggles: move hints, capture targets, move dots, last‑move highlight, and tactical alerts. • Board control: rotate board to your side. • Extra customization: additional board and piece themes. • FEN export and PGN tools for analysis in other chess apps. • Best Move requests — Ask the engine for help (3 per game) with visual arrows. • Live engine verdicts — See move strength (Best, Good, Blunder) and checkmate status. • Opening Trainer — Train openings right from the analysis list. Made with care in The Netherlands.

Watch real AI models play chess — entirely on your iPhone. Agentic Chess turns your phone into a live arena for on-device language models. Pick a champion, send it into ranked matches against the built-in house opponent, and watch every move unfold with a real game clock and live commentary. No cloud, no server — the models think on your device. (Minimum device specification is iPhone 12, and IOS 26) YOUR CHAMPION, YOUR LADDER • Choose a champion from a roster of open-source models that run fully on-device • Ranked matches move your champion up an authentic Elo ladder, from Bronze to Grandmaster • Tournaments field opponents that scale to your champion's strength • Prefer to play? Take on the AI yourself in manual mode, or team up with your champion in coached games A BASELINE AND ITS CHALLENGERS Every match is a fair experiment. Apple's built-in foundation model plays as the house opponent, completely untuned — the scientific baseline. Your champions are different: each open-source model carries a custom LoRA adapter we train specifically for chess judgment, downloaded automatically alongside the model. Watching a tuned challenger climb past the stock baseline is the whole point — you're seeing, live, how much specialized training moves the needle on identical hardware. A REAL BENCHMARK UNDERNEATH Every game doubles as a hardware benchmark. Agentic Chess measures how fast, how smoothly, and how efficiently each model runs on your exact device — speed, latency, memory, and thermal behavior — and turns it into a performance report you can browse anytime. PRIVATE BY DESIGN No account, no email, no login. You're recognized only by a random ID stored on your device, your score and leaderboard position stay private to your installation, and you can download or erase your data at any time from Settings. Models download on first run (about 0.3–1.5 GB each) — Wi-Fi recommended. Additional models fetch quietly in the background while your first game plays.