Sorry this is late, I’m still forgetting that the IoS is no longer a prize puzzle and is now blogged on the day of publication.
I found this tricky until I got into Kairos’s mindset and stopped looking for the obvious definitions. Very nice puzzle, though I have to admit to a little cheating at the end to get the blog out quickly. Thank you Kairos.
There is an unusual Nina in the grid – see Kairos’s comment – number 6.