Interesting article. Note that many of the clues in the article are mis numbered.

Not sure why. Refer to the original puzzles linked for the correct clues.

A long long time ago I had a fun time making Mobius strip structure out of link list(s).

Each edge of the ribbon was a linked list, connected to each other by rungs. It looped back on itself but connected crosswise .

Then if you nuked all the rungs it was clear you still got a connected piece that you could traverse over.

My partner publishes crosswords and it's always fun to see how much artistry goes into authoring a puzzle. You can play with the structure/grid, the theme of course, every minute detail of the fill, etc.

Never would have thought of a Mobius-strip though, insane.