Well, I guess that we have taken into account everything that you have mentioned
At least I have tried to work also with the needle, the sentence at the wall etc. But still nothing that works.
My impression is that there is a bug in this game. And I'm just waiting for a reply of the game author to clear this question before I invest more time in it.

My impression is that there is a bug in this game. And I'm just waiting for a reply of the game author to clear this question before I invest more time in it.
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