You solved our advanced riddle! Congratulations!

Write a personal comment under the post with using the word “QED” or do it in a more mysterious way with hidden characters like “the quest entirely done” in your own words.

QED = Qoud erat demonstrandum

Hint: the best solvers (if they wish) will form a secret group on the Conclave, keep in touch and solve as many riddles as you can!