On-device Shogi AI App 'Kifumi AI' Releases v9 with New Playing Style Report Feature

## New Feature in v9: 'Playing Style Report'

Marginal Gain Inc. (Headquarters: Chuo-ku, Osaka; CEO: Mitsuo Inomata) will release version 9 of 'Kifumi AI - Shogi AI Analysis and Record Management,' an app compatible with iOS, iPadOS, visionOS, and Mac, on June 1, 2026 (Monday). By creating a playing style report based on the user's past game records and visualizing strengths and weaknesses across 10 axes, the app has become even more effective for improving Shogi skills.

The app has earned a high rating of ★4.6 (51 reviews as of May 2026) on the App Store, drawing support from players who want to perform professional AI game analysis without using a PC.

### Background: A Peak Season for Shogi Interest

Late May to early June 2026 marks a period of heightened interest in the Shogi world:
- May 17: Sota Fujii Meijin (23) won the 84th Meijin-sen title, achieving his 4th consecutive title.
- May 28: Challenger decision match for the 67th Oui-sen (Yoshiharu Habu 9-dan vs. Takumi Ito 2-kan).
- May 31: Conclusion of the 11th Eiou-sen final match.
- June 4: Opening of the 97th Kisei-sen title match.

During this peak tournament season, users can use the new 'Playing Style Report' to visualize their own tendencies and weaknesses, turning their enthusiasm for watching matches into actual skill development.

### Four Core Features of 'Kifumi AI'

1. Game Record Analysis: AI automatically detects mistakes and highlights five key positions for improvement. Win-rate graphs visualize turning points in the game.
2. Shogi Research: Explore the best moves and evaluations in any position. Users can simulate developments after deviating from standard opening theories.
3. Mate Search: Quickly check for checkmate (tsumi) in actual game positions. Even sequences of over 30 moves are often found within seconds.
4. Game History Analysis: Automatically aggregates win rates by strategy and castle. Version 9 enhances this into the 'Playing Style Report.'

### Key Feature of v9: 'Playing Style Report'

While previous versions provided raw win rate data, v9 automatically aggregates and graphs results across 10 categories, including first/second move, strategy types, castles, turn counts, and time of day. It clearly indicates 'BEST' (strengths) and 'WORST' (weaknesses) at a glance for intuitive self-analysis.