Solutions
Step-by-step walkthroughs for completed challenges.
Challenge 14
Password reset is broken
Walkthrough: tracing mail-security link inspection and restoring atomic one-time token consumption.
Challenge 13
The Cheap Rate Window Challenge
Walkthrough: escaping a synchronized EV wallbox retry storm without tripping the grid.
Challenge 12
The Passenger Who Doesn't Exist Challenge
Walkthrough: reconstructing the gate reader pax_key from normalization, byte truncation, and case folding.
Challenge 11
The Sold-Out Concert With 20,000 Empty Seats Challenge
Walkthrough: tracing valid QR codes signed before authoritative ticket ownership transfer.
Challenge 10
The Goal That Stuck Challenge
Walkthrough: debugging a VAR overturn race between lagging match events and fast review decisions.
Challenge 9
The Tamagotchi That Dies Overnight Challenge
Walkthrough: debugging delayed job replay, stale payload state, and the worker-side fix.
Challenge 8
The JSON That Isn't Equal to Itself Challenge
Walkthrough: proving the HMAC input changed and restoring raw body verification.
Challenge 7
Final Boss Challenge
Walkthrough: fixing async ranked result finalization across regional combat shards.
Challenge 6
The Silent Stockout Challenge
Walkthrough: finding the removed inventory sync job and restoring cache refresh.
Challenge 5
The Heist That Never Was Challenge
Walkthrough: using re_gent history to identify the exact incident-causing prompt.
Challenge 4
The Pizza Index Challenge
Walkthrough: investigating data pipeline configuration and fixing coordinate field mismatch.
Challenge 3
Voice Generator Challenge
Walkthrough: identifying and disconnecting a rogue RabbitMQ consumer.
Challenge 2
The Mammal Generator Challenge
Walkthrough: debugging production database misconfigurations and feature toggles.
Challenge 1
Navigate and Analyze Incident Data in The Incident Challenge
Walkthrough: logs, architecture, config, and fixing the Redis hostname typo.