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Santa Claus has been on the road for several weeks now. He has already experienced a lot on his trip so far and thanks to your help he was able to open his wheat beer, the hiding place of the [...]

After Santa successfully uttered the solution word, to Santa’s great surprise, not the stolen gifts flew out of the painting, but a map and 5 golden keys and 3 silver keys. The map [...]

IMPORTANT: We ask all groups who take part in the puzzle advent calendar to register in the form https://nextcloud.in.tum.de/index.php/apps/forms/Y8FjiDfozbHfWAFE, if they have not already done [...]