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 Original Problems 
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 February, 2020 (2) The judge of JF-2020/I: Eric Huber.  Coming soon: nobody in the waiting list… 
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 All previously published problems & informal competitions you can find on the top menu page of Original Problems or its subsections. Animated diagrams use Py2Web by Dmitri Turevski and WinChloe‘s graphics, Christian Poisson  | 
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