July, 2020 The judge of JF-2020/II: Hans Gruber.
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All previously published problems & competitions you can find on the page JF Tournaments or using search options in Original Problems. Animated diagrams use Py2Web by Dmitri Turevski and WinChloe‘s graphics, Christian Poisson |
1524 link is pointing to 1523.
Julia, please correct!
Oh, corrected, thank you!!