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Let's share problems with most unexpected solutions

Revision en1, by LightRay, 2016-05-29 11:28:27

Let's share it! Some tasks with original ideas or solutions that are not easy to guess.

At least four links, please. Challenge others :)

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  Rev. Lang. By When Δ Comment
en1 English LightRay 2016-05-29 11:28:27 190 Initial revision (published)