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The puzzle:

Put six loops of threads together, in such a way that they cannot be separated from each other, but if any one of the loops is cut, then all threads can be separated from each other.

As example, here is a design that works for three loops.

enter image description here

Source of this puzzle is from a YouTube video, which contains a visual solution (spoiler). The design should be able to extend to any number of loops.

It looks quite interesting so I'm sharing it here.

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1 Answer 1

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And here is how it is done. :-)

enter image description here

or

enter image description here

Note that proving that they cannot be separated is a complete different story.

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  • $\begingroup$ Nice answer and presentation! I especially like that you give symmetric designs. $\endgroup$
    – WhatsUp
    Jul 14, 2022 at 12:15

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