# Chess Opening Blunders

> Learn how to trap and how to avoid typical problems in more than 40 openings!

Canonical page: [https://chrome-stats.com/d/com.chessking.android.learn.openingblunders](https://chrome-stats.com/d/com.chessking.android.learn.openingblunders)

## Overview

- **ID:** `com.chessking.android.learn.openingblunders`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Chess King
- **Category:** GAME\_BOARD
- **Downloads:** 844,358
- **Rating:** 4.41 / 5 (8,456 ratings)
- **Version:** 5.8.4
- **Last updated:** 2026-09-14
- **First published:** 2015-12-24
- **Publisher country:** US
- **Size:** 33 MB
- **Data as of:** 2026-09-22
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.chessking.android.learn.openingblunders)
- **Website:** [https://learn.chessking.com](https://learn.chessking.com/)
- **Privacy policy:** [https://chessking.com/android\_privacy\_policy.html](https://chessking.com/android_privacy_policy.html)

## Description

**Chess Opening Blunders** is a comprehensive Chrome extension designed to enhance your chess skills by teaching you to recognize and avoid common mistakes in over 40 different openings. Featuring more than 1,250 exercises drawn from practical games, this interactive course guides you through typical opening traps and blunders with varying difficulty levels.

Part of the acclaimed Chess King Learn series, it offers high-quality examples, hints, explanations, and refutations that act like a personal coach. Users can solve tasks, receive immediate feedback, and even play out positions against a computer to fully grasp the nuances of openings such as the Ruy Lopez, Sicilian Defense, French Defense, and many others. The extension supports rating monitoring, bookmarking favorite exercises, offline use, and cross-device syncing, making it an indispensable tool for both beginners and advanced players aiming to sharpen their opening strategies.

## Rankings

- #75,334 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.USE_BIOMETRIC`
- `android.permission.USE_FINGERPRINT`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.chessking.android.learn.openingblunders.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.google.android.c2dm.permission.RECEIVE`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`

## Review summary

Overall, users praise Chess Opening Blunders for its strong, varied puzzles that sharpen tactical play and its replay/analysis features, plus real-player annotated lines and a focus on reducing opening blunders. Many reviewers find it unique and preferable to other puzzle apps, and several report noticeable rating improvements. However, several consistent complaints emerge: the difficulty is uneven, with some puzzles far too hard for average players and others too easy; the opening-theory content is deeper than the branding; the interface can feel clunky; and some puzzles lack explanations. Users want more guidance and more content.

### Pros

- High-quality, varied puzzles and exercises that boost tactical skills.
- Replayable games with built-in analysis and multiple annotated lines by real players.
- Unique app for opening/blunder training; praised as better than some alternatives.
- Helps reduce opening blunders and improve opening play.
- Large set of puzzles; users want even more content.

### Cons

- Puzzles can be too hard or too easy; difficulty is inconsistent and not suited for all players.
- Opening theory depth is excessive; puzzles start late in the game, not aligned with the opening-blunders focus.
- Interface feels clunky or not polished.
- Some puzzles lack explanations or hints, leaving players guessing.
- Difficulty ratings are inconsistent (some high-rated puzzles are very hard, others easy).

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.chessking.android.learn.openingblunders)