In this class, we solve a linguistic puzzle each week, primarily from the International Olympiad of Linguistics. Topics include writing systems, number systems, verbal morphology, kinship systems, and others. I first taught this class in the winter of 2020/21. You can use my syllabus for inspiration, if you’d like to try this out. My students loved the class and so did I. Since this was a distant-learning class, I also prepared short video lectures for each session. You can watch some of them at the HHU mediathek. I will definitely teach this class again, probably with varying sets of puzzles.