Today, someone solved Betfury's crypto puzzle(0.5 BTC). Betfury wrote an article with the winner's impressions and with the correct way to find all parts of the private key. Also, they are working on the next part of the cartoon.
https://steemit.com/betfury/@betfury-steem/heist-of-the-century-key-is-found-0-5-btc-is-stolen