Well that was certainly challenging. The best I can say for my 0/10 score is I found six hidden girls' names, though not the group or book connection, and looked for a Pacific territories group which wasn't there

Just two groups and one connection for me. Did not see the Jolly Roger and Bathtub connections at all, though the former was more solvable than the latter. Tough challenge.

I sussed the Oganessian significance immediately, but didn't know the Japan fact so finding the group took too much time. One other geographical group was then easily findable, but the specific connection eluded me. No chance on the other too; too much noise vs. signal. Good but very hard.