Mastermind Project Part 2 Walkthrough - page/video missing

I see from searching the forums that it appears there were issues up until recently (last I saw was June of 2021) with the provided solution to one of the specs in Part 2. However, as of 12/20/2021, the page/video for Part 2 of the walkthrough is missing from the AAO website. Maybe it got taken down for updates and not replaced?

(edited to fix a spelling error and add screenshot)