A daily debugging workout for developers
Every day, everyone gets the same short pull request written by AI with exactly one real bug: off-by-one errors, SQL injection, race conditions, resource leaks and more. Find the line in three attempts, name the bug, and share your streak. It's the fastest way to sharpen the code-review skills that debugging and code-review interview rounds test.
Coding interview questions
- Python
- JavaScript
- TypeScript
- Go
- Java
- SQL
- Off-by-one errors
- SQL injection & XSS
- Race conditions
- Null & undefined bugs