HIARCS Chess vs Notation

HIARCS is a multiple World Championship winning chess program and the only handheld chess program in the world which has won matches and tournaments with Grandmasters. It twice won the Mercusor Cup in Buenos Aires, Argentina ahead of Grandmasters with a performance of 2900 Elo, the best chess performance rating for any handheld device in history. In 1997 the World's strongest ever human chess player, Garry Kasparov, said "HIARCS is much better positionally than Deep Blue" and even the current World champion, Vishy Anand, in a recent interview when asked what chess program he uses to analyse with said "generally I use HIARCS". This power enables your iPhone to play chess like a super Grandmaster, analyse games and chess problems with you, or play at whatever weakened chess strength you want from beginner to GM strength while offering numerous features to help you learn and improve as you play with HIARCS. An advanced set of coaching features helps players of all strengths improve their chess play. HIARCS Chess has a full range of realistic weaker opponent strengths and playing styles catering for players of all abilities from absolute beginners to Grandmasters. On the weaker playing levels HIARCS will make human-like mistakes appropriate to the level of play and this together with the integrated coach advice, assessments and alerts allow you to learn and improve quickly. HIARCS also monitors your chess performance and provides you with an Elo chess rating which tracks your chess ability in every game. It can continuously adjust its playing strength to give you challenging but beatable opponents as you improve. HIARCS Chess will save battery life by using much less energy on the weaker levels, allowing more playing time on long journeys etc. HIARCS Chess supports PGN chess game databases and has all the games between Fischer & Spassky and Kasparov & Karpov for you to play through and enjoy. HIARCS has a large tournament book which is up to date with chess theory with over 235,000 variations. The book moves are displayed on screen with chess symbols and the opening variations are named and ECO coded. Key features: + Strongest chess program on iPhone and iPod Touch, genuine strong GM-level performance + Suitable for all players from absolute beginners to strong Grandmasters with many handicap levels and opponents styles and advanced coaching + Intuitive and friendly user interface with multiple high quality pieces set, colour schemes and icons including high res support for iPhone 4 and 5 retina displays + Multiple playing modes: play white, black, both sides in two player mode, continuous analysis and interactive replay + Fully adjustable Elo strengths, adaptive levels and multiple playing levels and opponents + All levels below maximum are low energy to increase battery life + Rates your chess play and gives you an Elo rating which is updated after each game + Advanced coach can provide move options, give hints, indicate move safety and quality highlights and watch your play and warn about mistakes + Transfer PGN databases to/from HIARCS chess via iTunes file sharing, email games and PGN DBs from HIARCS + Launch HIARCS from PGN email attachments + Load, save or delete games to/from PGN databases + Set up or edit a position to analyse or play from + Advanced game navigation with game move slider and VCR buttons for rapid and precise game navigation + Many selectable preset blitz, incremental and average time clock settings for timed play + Large HIARCS tournament opening book as used by the professionals! + Permanent brain for enhanced playing strength + Numerous chess display functions for showing chess moves, analysis, book moves, coach advice, move quality even legal moves, offer draws or resign + 8 Piece sets and 9 colour schemes + Integrated Html manual and help screens A discount coupon is included with a $10 USD discount on other HIARCS products on Mac and PC from www.hiarcs.com.

Notation is a chess coaching app that teaches you why — not just what. Every chess evaluation comes from Stockfish 18, running entirely on your device. Every pattern, weakness, and tactical motif is detected by hand-tuned on-device classifiers built on decades of coaching theory. The language model's only job is the last step: explaining what the analysis found, in plain English, like a coach sitting next to you. The chess is never generated. It's explained. THREE COACHING FRAMEWORKS Notation is the first chess app to operationalise multiple grandmaster-level coaching frameworks as deterministic measurement: • Dan Heisman's seven positional elements — Mobility, Vulnerability, Centre Control, Coordination, Speed, Time, Flexibility — measured per-position with super-GM baselines • Jeremy Silman's coaching emphasis frames — fifteen frames choosing what to teach at each moment • Jacob Aagaard's positional predicates — Where are the weaknesses? Which is the worst-placed piece? What's the opponent's plan? All computed on-device. All deterministic. The same principles human coaches have used for decades, encoded into classifiers that run before the language model ever sees the position. GAME REVIEW Every game gets a coherent on-device review — no API key needed, no internet, no cost. Template-driven narrative against the full coaching substrate. When you want depth, upgrade once with your own Anthropic or OpenAI API key, o ruse the On Device LLM with no additional costs and the richer review becomes the permanent artefact for that game. Nadia comments on at most six moments — only the ones worth learning from. PDF export of every review. PLAYER PROFILE Style axes — Aggression, Tactical Alertness, Positional Play, Endgame — derived from the substrate with confidence bands. The seven Heisman elements sit below as evidence. Full-screen iPad dashboard. PDF coaching report you could hand to a human coach. OPPONENT SCOUTING & MATCHUP REPORTS Scout reports surface the full eight-axis substrate on any opponent. How-to-play-against framing with concrete suggestions. Player-vs-opponent comparison across all axes with weakest-phase detection. SHADOW — YOUR CHESS TWIN Shadow learns how you play and saves checkpoints. Play yourself from six months ago. See how far you've come. Coming soon: calibrate Shadow to your real-life rivals by importing their games. PLAY ON YOUR PHYSICAL BOARD Pair with Chessnut Air, Pro, Go, Air+ and Move over Bluetooth. Notation tracks every move on real wood while Nadia coaches. PRIVACY BY DESIGN Stockfish on-device. All coaching classifiers on-device. Cohort baselines on-device. Optional cloud AI is bring-your-own-key — your Anthropic or OpenAI API key, your account, your data. We never see it. Leave the field blank and Notation works fully without it. IMPORT YOUR GAMES Connect Lichess or Chess.com. Import PGN files. Nadia analyses everything in the background. £2.99. One-off. No subscription. No ads. No tracking. Yours forever.