I honestly don't like writing posts about books I didn't really like. Which is also the reason why reviews on my blog tend to be relatively positive: if I really didn't like something, I probably didn't finish it, or I didn't want to spend more time on it by also writing a post.
A few years ago, I read King's Obelists Fly High, a book that was certainly not perfect, but which I did think was a fun read due to some interesting points, most notably the Clue-Finder: an appendix at the very end of the book, a list of all the hints complete with page and line reference, sorted by category (clues to how, who, motive etc.). It was a very daring way to prove to the reader the game was being played in a fair manner, and I had always wanted to read the other Obelists books too, to see whether the other books could perhaps improve on the points I did find less impressive about Fly High.
Obelists at Sea is not that book. Oh well, there's always En Route...
Obelists at Sea is a book that has many of the same elements of Fly High, elements that can provide for an interesting mystery story. We have the murder happening in a closed circle situation (a luxury liner), a story built around multiple solutions, as provided by the four psychologists, a mystery surrounding someone being able to shoot twice at Smith in the dark and of course the promise of a Clue-Finder, a multi-page proof to show King has indeed provided enough clues for you to solve the murder. The book even features multiple very detailed floorplans of the S.S. Meganaut. Memorable are the punny names of most of the characters (Victim = Victor Timothy) too.
But all of this goes nowhere good. The floorplans for example? Basically just there for fluff, because they don't actually serve any role mystery-wise. There's plenty of interesting moments and points of mystery throughout the novel, like a corpse disappearing from the doctor's quarters and the mystery of the two bullets in the victim, but the actual solutions for these events are basically shrugged over, quickly explained in like two or three sentences without giving those moments any weight. The book focuses much, muuuuch more on the idea of having four different psychologists, who each champion a different school, offer different theories for the murder (of course all pointing at different people, based on different evidence). Of course, we have seen other books utilize such structures too, from The Poisoned Chocolates Case, which too has multiple detectives proposing different theories, similar to a lot of Brand's work, but also something like Ellery Queen, where sometimes you'll see Ellery himself proposing multiple solutions. But Obelists At Sea doesn't work for me, because the theories are all so based on pscyhology (King was a psychologist), I just can't take them really seriously in a mystery novel. In a way, I do get King attempted to portray psychology from a slightly ironic angle, making fun of the four psychologists (who are basically caricatures, embodiments of their respective schools) and their theories that aren't really based on anything but "X has shown indications they are of a certain character type, so they would have done Y", but this gets tiring very fast, especically as the majority of the book is written around this gimmick. The theories presented here feel like they would be spouted by a random character and immediately brushed off in a Queen-style, evidence-and-logic-based mystery novel, not the types you can structure a whole novel around. What doesn't help either is that while the book kinda wants to say "see, psychology doesn't work" by showing these psychologists arriving at very different solutions simply because they adhere to different schools, the final solution and the clues found in the Clue-Finder are still mostly built around psychological clues! So I don't really get what King was going for. The final solution does have elements I like for a final solution (the whodunnit etc.), but by that time, I didn't really care anymore, and I think the route towards this solution could've been so much more interesting and satisfying.
The book also has a rather noticable anti-semetic tone throughout. The book never, ever forgets to remind you the main suspect Saul de Brasto is a Jew. The book starting with Victor Smith harrassing de Brasto by outbidding him every time can still be seen as a form of anti-semitism commited by one character alone, but even after he's dead, everyone from the ship's detectives to the captain keep referring to de Brasto as the Jew or the Hebrew (note that no other character in the book is referred to constantly by their background), which isn't helped when they also learn he's a lawyer, because of course he'd be a crooked lawyer (because he's a....). Even after the initial supsicion on de Brasto should be cleared, the man is treated as as if they had preferred to have jailed him anyway. It gets very tiring very quickly.
Obelists At Sea just didn't do it for me. While on the surface, it has elements that seemed promising, or at least, elements that I have seen used in plenty of mystery novels that were fun, beneath the water level, it just ended up as a book I didn't enjoy. The main structure just doesn't work for me because I am not interested in solutions based solely on psychological analyses of characters, the more interesting elements mystery-wise for some reason are underplayed because of that and the Clue-Finder gimmick is still focused on psychological clues, something I had hoped it would have done differently from Obelists Fly High. I bought a Japanese translation of Obelists En Route (translated by Ayukawa Tetsuya!) a while back, so I'll probably get to that eventually!