Bug fixes, and improved handling of annotated PGN imports, and move evals

Bug fixes and tuning to on device language models

Users with lots of chess com or lichens games - you're now covered for imports! Batch processing, more responsive interface while importing. Tested up to 26k games... beat that ;)

v3.0 — The coaching substrate is complete. Game Review, rebuilt from scratch: • On-device review for every game — no API key, no internet, no cost • Nadia comments on at most six moments per game — only when there's something worth saying • Three-layer narrative: top verdict, per-moment walk-through, takeaways • Upgrade any review with Nadia's deeper commentary — one-off, not per-game • PDF export of every review — print it, email it to a coach Eight measurement axes on every position: • Heisman's seven positional elements (Mobility, Vulnerability, Centre Control, Coordination, Speed, Time, Flexibility) — calibrated against 21 super-GMs • Aagaard's three positional questions as a predicate library • Fifteen coaching emphasis frames from Silman and Heisman choosing what to teach and when Player Profile, rebuilt: • Style axes (Aggression, Tactical Alertness, Positional Play, Endgame) derived from the substrate with confidence bands • Full-screen iPad dashboard • PDF coaching report — cover, style profile, per-axis deep dives, narrative summary Opponent Scouting + Matchup Reports: • Full eight-axis substrate on your opponents • How-to-play-against framing with concrete preparation suggestions • Player-vs-opponent comparison across all axes with weakest-phase detection Nadia's voice, tightened: • Every claim traces to measured data — she never invents observations • Pedagogy-led: when coaching point and engine diverge, she teaches the lesson and acknowledges the difference honestly • Terse by design — most moves don't need commentary Under the hood: • Per-moment evaluation cache — faster analysis, especially on long games • Substrate-write integrity hardened across five code paths • CloudKit schema migrations done deliberately — slow on purpose

v3.0 — The coaching substrate is complete. Game Review, rebuilt from scratch: • On-device review for every game — no API key, no internet, no cost • Nadia comments on at most six moments per game — only when there's something worth saying • Three-layer narrative: top verdict, per-moment walk-through, takeaways • Upgrade any review with Nadia's deeper commentary — one-off, not per-game • PDF export of every review — print it, email it to a coach Eight measurement axes on every position: • Heisman's seven positional elements (Mobility, Vulnerability, Centre Control, Coordination, Speed, Time, Flexibility) — calibrated against 21 super-GMs • Aagaard's three positional questions as a predicate library • Fifteen coaching emphasis frames from Silman and Heisman choosing what to teach and when Player Profile, rebuilt: • Style axes (Aggression, Tactical Alertness, Positional Play, Endgame) derived from the substrate with confidence bands • Full-screen iPad dashboard • PDF coaching report — cover, style profile, per-axis deep dives, narrative summary Opponent Scouting + Matchup Reports: • Full eight-axis substrate on your opponents • How-to-play-against framing with concrete preparation suggestions • Player-vs-opponent comparison across all axes with weakest-phase detection Nadia's voice, tightened: • Every claim traces to measured data — she never invents observations • Pedagogy-led: when coaching point and engine diverge, she teaches the lesson and acknowledges the difference honestly • Terse by design — most moves don't need commentary Under the hood: • Per-moment evaluation cache — faster analysis, especially on long games • Substrate-write integrity hardened across five code paths • CloudKit schema migrations done deliberately — slow on purpose

Meet Coach Nadia. Bring your own Anthropic API key and get conversational game reviews powered by the unique per-move data Notation captures — whether you play in-app, on a Chessnut board, or import from online. Your data stays yours. No subscription. 100% in control of costs. More providers coming. Also new: - Lichess and Chess.com sync — sign in from Settings, games flow in automatically (live for Lichess, monthly for Chess.com per platform restrictions) - UI polish, performance improvements, and resiliency fixes throughout

Bug fixes

With more users come more edge case bugs. PGN file handling is more robust. Engine bugs squished. Few foundations laid for some fun new features.

Bug fixes on larger game imports (100+)

Player Profile PDF Export Generate a detailed coaching report from your games — weakness profile, blunder heatmap, opening performance, positional tendencies, and playing style analysis. Export as a shareable PDF. Chessnut Move Support Full support for the Chessnut Move board, including auto-move for engine moves during play. Lichess & Chess.com Import Improvements - Per-game side selection during import (play as White, Black, or mark as study game) - Study games are fully analysed but excluded from your profile stats - Fixed timing data for imported Lichess games - Live Lichess games now track per-move thinking time Improved Analysis - New positional tendencies section (castling timing, pawn structure, outpost usage, bishop pair retention, open file contests) - Accuracy formula refined for more meaningful percentages - Definitions glossary added to PDF reports Board Improvements - Expanded hint display (source and destination squares) - Game start/end LED animations - Improved reconnection reliability

Now works with Chessnut electronic boards. Coaching commentary is sharper and quieter on routine moves, so when Nadia speaks up, it matters. Plus dozens of fixes to analysis, imports, and your player profile.

TTS engine changed, 1/3 the memory overhead means works on more devices reliably. Engine resilience - you won't see the engine stop randomly as much iPhone UI tweaks Liquid Glass design Lichess import and play possible.

Chess Coach AI — formerly Notation. New in this release: • Coach Mode: real-time AI coaching during every game • 11 AI opponents with unique personalities • 62 guided lessons from beginner to expert • Mistake tracking and weakness profiling • TTS voice coaching — hear the coach explain your moves • Classic games with coach commentary • Something is coming...But in the end, it's only a passing thing, this shadow. Even darkness must pass. A new day will come. And when the sun shines, it'll shine out the clearer. Same app, better name. Your chess coach is ready.

NEW IN THIS UPDATE: Classic Games Collection Watch 17 of history's greatest chess games with full broadcast commentary. From the Opera Game to Gukesh's 2024 World Championship victory. Pause and jump in as either player. Coach Mode Real-time coaching while you play. Hints, blunder detection with take-backs, mate spotting, and proactive suggestions. Disables ratings for pressure-free training. Live Commentary Two AI voices narrate your games in real-time — a coach for the chess, a commentator for the drama. Three detail levels from beginner to expert. Improved AI Opponents Fairy-Stockfish configuration updated for more realistic play at all levels. No more robotic king shuffling. UI Refresh Streamlined navigation with four clear sections: Play, Learn, Classics, and Profile. The board stays front and centre.

Board flipping - when playing as black, board is correctly oriented. Minor bug fixes Coming soon.... live analysis and commentary during play (optional), heat maps in review mode. Playing style identification. Coming later.... Vision Pro Support (Immersive)