This is a very specific book that will mainly be of interest to specialists. Nonetheless, it may also interest those curious about foreign cultures, as it is centred on the enjoyable topic of riddles. Rather than « riddle », Rémy Dor chose the word « devinaille » (from the French word for riddle: devinette), because it has a stronger implication of action, either as a tool for discovery, or as the result of guessing something, whereas the word « riddle » is linked to a childhood game. Here, it is serious, even essential, to guess; otherwise you put yourself at risk. The conclusion is generally demeaning or threatening, and failing to solve the enigma can be punished severely.