--- title: "Encyclopedia 3 by Informant — App Overview" url: https://marlvel.ai/intel-report/games/encyclopedia-3-by-informant category: Games developer: Chess King platforms: ios rating: 4.9 (17 ratings) pricing: free report_level: overview generated: 2026-05-09 last_verified: "2026-05-09T08:02:44.947Z" --- > **Key Insight:** This app provides a professional-grade, systematic training tool for elite chess players looking to master complex tactical combinations. | Metric | Value | |--------|-------| | Category | Games | | Rating | 4.9 ★ (17) | | Pricing | free | | Platforms | iOS | | Latest Version (iOS) | 1.2 | | Developer | Chess King | ## What is Encyclopedia 3 by Informant? Encyclopedia 3 by Informant is a specialized chess training application based on the Chess Informant book series. It provides a systematic collection of advanced chess combinations designed to challenge high-level players through curated, theme-based tactical exercises. ## Key Features - **Advanced Tactical Training**: Offers a curated selection of chess combinations specifically designed for players at the 2400 ELO level. - **Thematic Sorting**: Organizes tactical puzzles by theme to facilitate a structured and efficient learning experience. - **Chess King Learn Integration**: Operates as part of the Chess King Learn series, utilizing a standardized methodology for chess education. ## Who is it for? Advanced chess players with an ELO rating of 2400. ## Links - [App Store](https://apps.apple.com/us/app/encyclopedia-3-by-informant/id1256485200?uo=4) - [Full Intelligence Report](https://marlvel.ai/intel-report/games/encyclopedia-3-by-informant) --- *This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/intel-report/games/encyclopedia-3-by-informant).* *Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*