There more hints at the bottom of the post. However, yes this post is only for the first riddle, and about every two days there will be another riddle posted, this is to allow everyone to take their time and discover the answers. Hope this makes it more clear.
Which gives the Number pad, and the answer is in the next 4 riddles. You should have told this :) I have been trying for more than 4 hours to find something:)
Oh no, we have probably made it more clear on stage. Hope you solved the first one, the next one is going to be more clear since the Gatekeeper riddle was the most difficult one to solve even for the people in Graz.
ok, but I see there are two people who solved it already, may be they used the offline QRs hidden in the refrigerator :)
It is very doable to solve it online as well @sanjeevm👍
Ya, I hope so, waiting for the next QR codes, do mention me when you declare.
They are posted by now @sanjeevm👍
Thank you so much for calling out, it's a busy day, but I will try my best.
Cracked, managed to secure the 4th position :) It was a new learning for me, thank you for the challenge. I would seek an explanation to Riddle 4 though, I know the popular dev, but I could not exactly derive the answer at first go.