As I said when posting last week, I am always slow to begin Phi’s crosswords, but then everything becomes clear and you wonder why there were any difficulties, because it all fits together fine and one is left wondering what the problem ever was. Perhaps that’s the mark of a good setter.
I have given up having more than a cursory glance (which of course failed to find anything here) to see if Phi has given us a Nina, since his — if they exist at all — are always so difficult to see. No doubt …
Definitions underlined.