That’s kinda the whole point of the Hidden Challenge.
FAQ Category: Hidden Challenge
Can you tell me more about the Hidden Challenge?
How will I know when I’ve solved the final puzzle of this challenge?
You will have completed this challenge when you use the correct password to open a page whose title says that it’s the final page of the challenge. That page will contain a big congratulatory message on it, the tracking code you’ll need for the travel bug, and other surprises. There’s really no way to miss it – if you’re not certain that you’re done, you’re not done.
How many puzzles are in this challenge?
At least seven.