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I came up with the idea for this puzzle when I was 19 years old. It just came to me during a stroll home in the snow, truly a creation of my youth.
Unfortunately, saying anything here about its construction would give away how to solve it. I certainly can't disappoint the fans that have come to expect frustratingly difficult puzzle from me.
Besides, the fans that refuse to accept any link of hint are those who make me the happiest!
The key word is "needle".