If you don't know the book, it is an investigation of a list of questions put forward by a 14th century French knight Geoffroi de Charny to his fellow aristocratic warriors, presumably to educate them in their duty and privileges as warriors. Because there are no answers given, Charny's questions are an unresolvable puzzle and maybe for this reason there have been few detailed looks at the questions and their purposes. Also, no one I know has translated all the questions before now.
Like historical puzzles? Wonder about what chivalry meant to those who fought in the Hundred Years War? Is your curiosity piqued by the phrase "who gets the horse?"
Now all this can be yours – the answers, I mean, if you are willing to stick out your neck and propose some yourself.
Here's a link to the publisher.
If you are close with the dollar, you might try poking around this blog for some of my reflections on Charny's questions over the years.