Years ago I had a "ReworkCTF" board with 20-odd PCB layout bugs designed into it on purpose, ranging from backwards LEDs to missing vias under a BGA to inner layer differential pair swaps.

The original board had some design issues that made some of the fixes easier/harder than intended, and also ancient, I think now EOL, parts (a Spartan-3A FPGA - even if not EOL nobody wants to use one of those in 2026).

I'm hoping to do a gen 2 of the challenge soon probably based on a BGA STM32 or Spartan-7 but haven't worked out the specifics yet.

Is anybody interested in contributing challenge concept based on real board bugs you've had?

Also, would folks be interested in me livestreaming a "play through" of some/all of the challenges once I have a board in hand?