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I have a puzzle that isn't successfully answered.
You can see me in different face
Can I post the answer on that?
You have two options: add hints or answer it yourself. Either is acceptable, but I would suggest adding hints for a while before answering. It's possible that someone else will figure it out with a little nudge.
You should either:
Begin adding hints that asymptotically approach giving the answer away.
Put the answer in a community wiki post.
Delete the question.