# Encyclopedia 3 by Informant — Chess Training

> Advanced chess combination training for players rated 2400 ELO. (iPhone/iPad app by Chess King.)

- Source: https://appshunter.io/ios/app/encyclopedia-3-by-informant/id1256485200 (this page in markdown: same URL + `.md`)
- Developer: [Chess King](https://appshunter.io/developer/1096660597)
- Category: Games, Education, Board, Puzzle
- Price: Free with in-app purchases
- Rating: 4.90/5 from 17 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 44 MB
- Languages: American English, Dutch, French (France), German (Germany), Greek, Italian, Polish, European Portuguese, Romanian, Russian and 4 more
- Released: 2017-07-20
- Data updated: 2026-08-28
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/encyclopedia-3-by-informant/id1256485200/reviews.md

## What is Encyclopedia 3 by Informant?

Encyclopedia of Chess Combinations vol. 3 (ECC vol. 3) is the ultimate educational tool with systematic, carefully selected content for player with ELO 2400. The material is based on the latest edition of the eponymous bestselling book released by Chess Informant. This volume contains chess combination of Advanced Level (ELO 2400) for solving, all hand-picked and sorted by theme to provide the most exciting and efficient training experience possible! Unlike disorganized, basic tactics you can learn all over the Internet, this Chess Sphinx will challenge you consistently and systematically, unveiling new intricacies right when you decide you have mastered that particular tactic.

This course is in the series Chess King Learn (https://learn.chessking.com/), which is an unprecedented chess teaching method. In the series are included courses in tactics, strategy, openings, middle game, and endgame, split by levels from beginners to experienced players, and even professional players.

With the help of this course, you can improve your chess knowledge, learn new tactical tricks and combinations, and consolidate the acquired knowledge into practice.

The program acts as a coach who gives tasks to solve and helps to solve them if you get stuck. It will give you hints, explanations and show you even striking refutation of the mistakes you might make.

The program also contains a theoretical section, which explains the methods of the game in a certain stage of the game, based on actual examples. The theory is presented in an interactive way, which means you can not only read the text of the lessons, but also to make moves on the board and work out unclear moves on the board.

Advantages of the program:
• High quality examples, all double-checked for correctness
• You need to enter all key moves, required by the teacher
• Different levels of complexity of the tasks
• Various goals, which need to be reached in the problems
• The program gives hint if an error is made
• For typical mistaken moves, the refutation is shown
• You can play out any position of the tasks against the computer
• Interactive theoretical lessons
• Structured table of contents
• The program monitors the change in the rating (ELO) of the player during the learning process
• Test mode with flexible settings
• Possibility to bookmark favorite exercises
• The application is adapted to the bigger screen of a tablet
• The application does not require an internet connection

The course includes a free part, in which you can test the program. Lessons offered in the free version is fully functional. They allow you to test the application in real world conditions before releasing the following topics:
1. Annihilation of defence
2. Blockade
3. Clearance
4. Deflection
5. Discovered attack
6. Pinning
7. Demolition of pawn structure
8. Decoy
9. Interference
10. Double attack

## Key features

- Advanced level chess combinations
- Systematic training by theme
- Interactive theoretical lessons
- Hints and refutations for mistakes
- Play positions against computer
- Monitors ELO rating changes
- Offline functionality

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Full Course | $9.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/encyclopedia-3-by-informant/id1256485200/reviews.md

### 5/5 — Excellent

*2017-07-31*

Very high quality puzzles.

## Frequently asked questions about Encyclopedia 3 by Informant

### What is the ELO rating required for Encyclopedia 3?

Encyclopedia 3 is designed for players with an ELO rating of 2400. It offers advanced-level combinations and systematic training tailored for experienced chess players.

### Does Encyclopedia 3 require an internet connection?

No, the application does not require an internet connection. You can use it for offline chess training and learning.

### How does Encyclopedia 3 help improve chess skills?

It provides high-quality, double-checked chess combinations sorted by theme for efficient training. The app acts as a coach, offering hints, explanations, and refutations for mistakes.

### Can I test Encyclopedia 3 before purchasing?

Yes, the course includes a free part with fully functional lessons. This allows you to test the application's features and effectiveness before exploring further topics.

### What types of chess concepts are covered in Encyclopedia 3?

The app covers advanced-level chess combinations and tactical themes such as Annihilation of Defence, Blockade, Clearance, Deflection, Discovered Attack, Pinning, and more.

### Does Encyclopedia 3 track my progress?

Yes, the program monitors the change in your ELO rating during the learning process. It also offers a test mode with flexible settings to gauge your improvement.

### Is Encyclopedia 3 suitable for tablets?

Yes, the application is adapted for the bigger screen of a tablet, providing an optimized user experience on larger devices.

### What is the update frequency for Encyclopedia 3?

The latest version of Encyclopedia 3 is 1.2, last updated on January 29, 2018. Further updates may be released by the developer, CHESSQUEEN INC.

## Version history (last 3 releases)

### 1.2 — 2018-01-29

This app has been updated by Apple to display the Apple Watch app icon.

• App is updated for iPhone X
• New home screen
• Animated playback of theory with sound
• Date of reading the theory
• Disabled automatic playback of refutations
• Option to reset password
• Renaming of account
• Various fixes and improvements

### 1.0.5 — 2017-08-16

• Added German, Italian, Chinese, Spanish, Dutch, Portuguese, French, Polish, Romanian translations 
• Various fixes and improvements

### 1.0.4 — 2017-07-20

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*