Your statement is untrue (I solved both tasks)

Question

To not leak the solution I try to be unspecific as possible. But there are some things which work in the task you meant which we should reuse but the used input for the first one we should reuse works for lots more possible ways then the last one. If you need more details please comment then I’ll write you an email. Please let me know to which email address I should write it.

Answer 1

Hi,

Thank you for your email (in addition to this post).
I will answer it here.

1. We did not know that a variation of "none" leads to an error message, which can lead students down the wrong path, making it impossible to solve the task. We will send the feedback to the developers of the platform. Thank you for pointing it out!

2. Regarding the false statement:

The original question asked us whether there exists some encoding problem that would need to be solved.
That is not the case.

The OP also said that they tried every previous solution.
This caused me to assume that OP tried every exact solution of the previous tasks.
Therefore, they did not try other variations of "none".
My hint was that it is a similar attack, meaning that they could try other variations of "none" without actually saying it, as I would provide the direct solution otherwise.
I am sorry if this lead you down a wrong path, but we do not feel that this is a false statement, as a variation of "none" (=> something similar) solves the task.
It is just a different variation, as you point out yourself.

I hope that this clears it up.
Feel free to ask more questions otherwise.

Cheers
Sebastian

Comments

Hey it was not meant offensive or anything like this (my English is not the best) sorry if it sounds like it. Thanks for the response here.

My intention was to point out
 that the author of the first post may should try it with them again.
Maybe It would be a idea to rename it in the exercises hint that one of the former attack types should work also for this task.
That is not direct because eg. Key Confusion or so has also different sub types, so it would be not directly Spoiler the solution.  
Sorry again fore the offensive sounding of my last post.
That was really not my intention.

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Don't worry. I just wanted to explain the reasoning behind my answer. You did not offend me or anyone else.

However, you are right. I will update the wording for next year. Thanks for the idea.