O.K., here's one for everybody here who likes knots. I was like a chicken looking at a card trick, but some people here (TonyE?) may like it.

It took Lisa Piccirillo less than a week to answer a long-standing question about a strange knot discovered over half a century ago by the legendary John Conway.


Story at link -

https://www.quantamagazine.org/graduate-...aign=pockethits
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Brian Brandt