# Chess Opening Blunders — Chess Training

> Chess opening blunder encyclopedia with interactive exercises and coaching. (iPhone/iPad app by Chess King.)

- Source: https://appshunter.io/ios/app/chess-opening-blunders/id1129867864 (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: 4.70/5 from 246 App Store ratings · 44 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 43 MB
- Languages: Greek, Dutch, German (Germany), Russian, Romanian, European Spanish, American English, Italian, Chinese (Simplified, China), Chinese (Traditional, Taiwan) and 4 more
- Released: 2016-09-09
- Data updated: 2026-09-06
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/chess-opening-blunders/id1129867864/reviews.md

## What is Chess Opening Blunders?

Encyclopedia of Opening Blunders – learn to play chess by learning the opening mistakes and traps that have been discovered over time. The program is designed for studying the blunders in more than 40 openings and contains over 1,250 instructive exercises of varying difficulty from practical games.

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.

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. Rare variations
1.1. 1.g3, 1.b4, ..
1.2. 1.b3
1.3. 1.d4
1.4. 1.d4 Nf6
1.5. 1.d4 Nf6 2.Nf3
2. Alekhine's defense
3. Benoni defense
4. Bird's opening
5. Bishop's opening
6. Blumenfeld counter-gambit
7. Bogo-indian defense
8. Budapest gambit
9. Caro-Kann
10. Catalan system
11. Center gambit
12. Dutch defense
12.1. Dutch defense
12.2. Iljin Genevsky system
12.3. Leningrad system
12.4. Staunton gambit
12.5. Stonewall variation
13. English opening
14. Evans gambit
15. Four knights' game
16. French defense
16.1. French defense
16.2. Classical variation
16.3. Tarrasch variation
16.4. Winawer variation
17. Grünfeld defense
18. Italian game & Hungarian defense
19. King's gambit
20. King's indian defense
20.1. King's indian defense
20.2. Classical variation
20.3. Fianchetto variation
20.4. Four pawns' attack
20.5. Saemisch variation
21. Latvian gambit
22. Nimzo-indian defense
22.1. Nimzo-indian defense
22.2. Leningrad variation
22.3. Rubinstein variation
22.4. Saemisch variation
23. Nimzowitsch defense
24. Old indian defense
25. Philidor's defense
26. Pirc-Robatsch defense
27. Queen's gambit
27.1. Queen's gambit
27.2. Queen's gambit accepted
27.3. Albin counter-gambit
27.4. Cambridge-Springs variation
27.5. Exchange variation
27.6. Orthodox defense
27.7. Lasker defense
27.8. Tartakower defense
27.9. Ragozin system
27.10. Semi-Slav defense
27.11. Semi-Tarrasch defense
27.12. Slav defense
27.13. Tarrasch defense
27.14. variation with 5.Bf4
28. Queen's indian defense
29. Queen's pawn game
30. Reti opening
31. Petroff's defense
32. Ruy Lopez
32.1. Ruy Lopez
32.2. Berlin defense
32.3. Bird's defense
32.4. Breyer variation
32.5. Chigorin defense
32.6. Classical defense
32.7. Exchange variation
32.8. Marshall attack
32.9. Steinitz defense deferred
32.10. Steinitz defense
33. Scandinavian defense
34. Scotch gambit & Ponziani's opening
35. Scotch game
36. Sicilian defense
37. Three knights' game
38. Two knights' defense
39. Vienna game
40. Volga-Benko gambit

## Key features

- Learn opening mistakes and traps
- Over 1,250 instructive exercises
- Covers more than 40 chess openings
- Interactive lessons with hints and explanations
- Play positions against the computer
- Monitors player rating (ELO)

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Full course | $12.99 | one-time |


## Recent user reviews (10 of 44)

All indexed reviews: https://appshunter.io/ios/app/chess-opening-blunders/id1129867864/reviews.md

### 3/5 — Notice absente

*2026-03-21*

Dommage car rien n’est expliqué. Il devrait y avoir un mode d’emploi exhaustif d’une part et, d’autre part, il serait bon de rappeler l’ouverture choisie car lorsque l’analyse et faite sur plusieurs jours, on est obligé de revenir au début. Perte de temps.

### 2/5 — Great potential, but squandered

*2025-04-03*

This game offer no real learning. If you get it, you get it. If you don’t, there are no tutorials, no manual to decipher their color scheme on there hints, no real pedagogy at all. Of all their offerings, this one is the most frustrating in this regard as opening play is far from obvious. At least on an end game, you can understand the strategy and just have to sort out the tactics.

### 5/5 — Excellent

*2023-10-18*

Great job . Un très bon complément à l autre appli, 
Le labo des ouvertures.

### 5/5 — Packed with Great Lessons

*2023-06-06*

I’m a chess fan who loves the challenge of these lessons. I’ll never be a strong player but they give me so much to keep my brain sharp and active. Love it. Best of the lot I’ve found available imho.

### 1/5 — Fehler

*2023-04-12*

Die App ist ein Fehler, keine Erläuterungen, Erklärungen etc.

### 4/5 — Très très bien

*2022-12-07*

Bravo continuez

### 2/5 — Not much efficient and effective as they say

*2022-09-03*

Not enough resources and fun enough

### 5/5 — Schach neu gesehen

*2022-07-17*

Gute Lernhilfe. Macht Laune, seinen Gehirnschmalz 'mal zu verflüssigen. Und in die gegnerischen Linien einzudringen, ohne Angst vor Verlusten.🌹🌹🌹🌹🌹

### 5/5 — Opening Blunders

*2022-07-12*

This is a great learning app

### 5/5 — King Chess’s  apps are simply the best apps for learning to play  chess

*2022-06-03*

Greatest apps in the world. Keep up the good job.

## Frequently asked questions about Chess Opening Blunders

### What does the Chess Opening Blunders app do?

This app helps you learn chess by studying common opening mistakes and traps discovered over time. It provides an encyclopedia of opening blunders with over 1,250 exercises across more than 40 openings, acting as an interactive coach.

### What are the key features of this chess app?

Key features include learning from over 1,250 instructive exercises, studying more than 40 openings, receiving hints and explanations for mistakes, playing positions against the computer, and monitoring your ELO rating as you learn.

### Is this app free to use?

The application includes a free part where you can test its functionality with fully functional lessons. Additional topics and content are available through in-app purchases.

### What chess openings are covered in the app?

The app covers a wide range of chess openings, including variations of the French defense, King's Indian defense, Nimzo-Indian defense, and many others, such as Alekhine's defense, Caro-Kann, and the Italian game.

### Can I use this app offline?

Yes, the application does not require an internet connection, allowing you to study and practice chess openings anytime, anywhere.

## Version history (last 5 releases)

### 1.2 — 2018-01-18

This update from Apple will improve the functionality of this app. No new features are included.

• App is updated for iPhone X
• New home screen
• Disabled automatic playback of refutations
• Option to reset password
• Renaming of account
• Various fixes and improvements

### 1.0.4 — 2017-06-19

• Added Chinese translations
• Bug fixes

### 1.0.3 — 2017-05-25

• Bug fixes

### 1.0.2 — 2017-05-05

Attention! You should have an internet connection on the first launch to verify your purchase!
• Added cloud sync option for statistics and bookmarks
• Added "Auto hints" option - you can use it to turn off automatic hints after wrong move attempts
• Added switching between exercises using swipe gestures
• Added Tag (colored commentaries) option for bookmarks
• Various fixes and improvements

### 0.9.8 — 2017-02-08

• Added auto switch to the next exercise
• Added engine analysis mode and improved engine play mode
• Added statistics of the solved exercises by day
• Added possibility to share exercise with friends
• Added table of symbols convention
• Bug fixes and small improvements

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## Related topics

[chess opening blunders](https://appshunter.io/ios/topics/chess-opening-blunders) · [openings](https://appshunter.io/ios/topics/openings)

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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 2026-09-06.*