Stop grinding LeetCode.
Start fixing real bugs.
Most coding platforms test if you can reverse a linked list. Nobody cares. What actually matters is tracing a null pointer through 12 files at 2am.
Star on GitHub1Traceback (most recent call last):2 File "app/handlers/message.py", line 473 in process_message4 File "app/services/queue.py", line 235 in enqueue6TypeError: 'NoneType' object is not subscriptable7 8Context: user_id=4521, channel="general"9Last successful: 2 minutes ago10Failure rate: 23% of requestsStart here. What is the actual problem?
The workflow
Clone. Test. Fix. Submit.
Everything runs locally. Clone the challenge repo, run tests with your own tools, fix the code, submit when you are done. No browser IDE. No hand-holding.
Sample challenges
Real bugs from real codebases
The Case of the Missing Messages
Users report messages disappearing mid-conversation. Logs show they are being sent. Redis shows they are being queued. But somehow, they never arrive. What is eating them?
Auth Worked Yesterday
JWT tokens validate fine locally. Production returns 401 for everyone.
The Infinite Loop
Component keeps re-rendering. DevTools shows thousands of updates per second.
The 3am Incident
Database connections spike to 500, app goes down, nobody knows why. You are doing the postmortem. Reconstruct what happened and write the fix that prevents it from happening again.
How it works
Debug like you would at work
Read the stack trace
No hints. Start where every real debugging session starts: an error message and a pile of code.
Trace the issue
Navigate across files. Understand the codebase. Find where things broke and why.
Write the fix
Actual working code that passes the tests. The kind you would push to main.
Built in the open
recticode is open source and free forever. Follow the repo to get notified when we launch new challenges and features.