Here's what the Swedish artist Oscar Reutersvard did. In 1934, he got himself a pen and paper and drew four cubes, like this. He called this final version "Impossible Triangle of Opus 1 No. 293aa." I ...

For most people, there’s little appeal in mastering the Rubik’s Cube — especially two years into a pandemic, when crawling out of bed and going to work seems like enough of a challenge most days.