--- title: "Encyclopedia 1 by Informant — App Overview" url: https://marlvel.ai/intel-report/games/encyclopedia-1-by-informant category: Games developer: Chess King platforms: ios rating: 4.9 (49 ratings) pricing: free report_level: overview generated: 2026-05-09 last_verified: "2026-05-09T08:02:27.329Z" --- > **Key Insight:** This app offers a curated, theme-based tactical training curriculum specifically calibrated for players at the 2000 ELO level. | Metric | Value | |--------|-------| | Category | Games | | Rating | 4.9 ★ (49) | | Pricing | free | | Platforms | iOS | | Latest Version (iOS) | 1.2 | | Developer | Chess King | ## What is Encyclopedia 1 by Informant? Encyclopedia 1 by Informant is a digital chess training tool based on the Chess Informant book series. It provides a systematic collection of chess combinations categorized by theme to facilitate structured learning. The app is part of the Chess King Learn educational ecosystem. ## Key Features - **Thematic Combination Training**: Offers chess combinations hand-picked and sorted by specific themes for efficient practice. - **Chess King Learn Integration**: Operates within the Chess King Learn teaching method, which covers various aspects of chess from openings to endgames. - **Systematic Difficulty Scaling**: Provides a structured challenge designed to unveil new tactical intricacies as users progress. ## Who is it for? Intermediate chess players with an ELO rating of approximately 2000. ## Links - [App Store](https://apps.apple.com/us/app/encyclopedia-1-by-informant/id1256484830?uo=4) - [Full Intelligence Report](https://marlvel.ai/intel-report/games/encyclopedia-1-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-1-by-informant).* *Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*