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22nd; 28th; 31st of December, 2017 Happy New Year! The warmest wishes to all of you, dear JF’s judges, authors, readers, commentators, solvers… to your families and friends!
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Animated diagrams use Py2Web by Dmitri Turevski and WinChloe’s graphics. |
All previously published problems you can find in the subsections of Original Problems menu on the top. The judge of JF-10/2017-3/2018: Shankar Ram. The judge of Retro & PG problems 2017-2018: Dirk Borst.