The theme of the puzzle was Coriolis force (the inertial effect that causes storms to spin in different directions depending on their hemispheric position) and it is applied with such elegance, you really have to see it to appreciate it.
the amount of pleasure this act of brilliance gives me is difficult to describe. It’s just so perfect, so virtuosic, and yet so playful. It’s the Platonic ideal of a crossword puzzle. And the amount of creativity and brainpower it takes to actually conceive of and create it is astounding to me.