Chess Blunder Trainer
4.8star
70 reviews
Everyone
info
1K+
Downloads
About this game
Analyze your chess blunders from your own games as interactive puzzles.
You can automatically import your games from the online platforms Chess.com and Lichess, or from your personal PGN files.
Powered by chess engine evaluations, the app identifies your blunders and mistakes, offering you the unique opportunity to replay these critical moments as personalized puzzles.
With the app, you will turn your mistakes into valuable learning opportunities!
You can automatically import your games from the online platforms Chess.com and Lichess, or from your personal PGN files.
Powered by chess engine evaluations, the app identifies your blunders and mistakes, offering you the unique opportunity to replay these critical moments as personalized puzzles.
With the app, you will turn your mistakes into valuable learning opportunities!
Updated on
Available on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, App activity and 2 others
Data is encrypted in transit
Ratings and reviews
4.8
65 reviews
Mark Bateman
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May 4, 2024
Is nice idea. I also import games from the old legends and see if I can come up with an alternative. Many middle games can have a 1 pawn blunder and still be winnable. Bad is no way to save or export. Must be careful when naming an import. I change each game date to the same thing so that many imports go into same training. Too bad I can't group by player name or event.
Mercutio1243
December 31, 2024
Mark, thank you for the review!
As for your comments, please be so kind as to check the settings: in the segmentation mode setting, you can change how training sets are built. Also, you can export a game or position by using the information icon at the top of the "improve" screen
Hope this helps, please consider to update your rating to 5 stars :)
Yuri
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February 6, 2026
Absolutely amazing app. We can play our own games as puzzles. Do u think u can add an explanation to why it was a blunder & why this move is the best move(maybe using AI or smth else)? It'll be great & I think it'll be a massive boost for this app as I havent seen apps that can tell you why a blunder is a blunder & how a great move is actually a great move in easy layman terms. Edit: Lichess "Import selected month" isnt working, I played 2 games there & tried importing but it says empty
Mercutio1243
February 7, 2026
Thank you, Yuri, for you kind review. I will take your feedback into consideration!
On the import error, please reach out to me via the settings, and I will have a look. Normally, the import function works. Maybe you need to select a different month or have misspelled your username?
vlad kostyna
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May 12, 2025
Imagine if puzzle apps were not based on random positions, but YOUR actual games! This app does just that and I simply imported my last 100 games from chess com to go over my personal mistakes an oh boy they were a lot. it shows you evaluation after your blunder, and after the best move, also lets you play the scenarios from there with an evaluation bar so you can analyse the follow up too. Great app, I don't know why it is not gaining traction
1 person found this review helpful
Mercutio1243
May 12, 2025
Hi Vlad, thanks for your kind rating. It is a personal project of mine, so I cannot really advertise it. But feel free to spread the word! :)
What’s new
Introduction of dark mode; introduction of additional chess board colors; introduction of new release notes dialog; various bug fixes and improvements
App support
About the developer
Thomas Köppen
chessblundertrainer@gmail.com
Wißmannstraße 35
50823 Köln
Germany
