Aranyosi, I.2019-01-302019-01-3020100031-8191http://hdl.handle.net/11693/48502I discuss a solution to the Yale shadow puzzle, due to Roy Sorensen, based on the actual process theory of causation, and argue that it does not work in the case of a new version of the puzzle, which I call ‘the Bilkent shadow puzzle’. I offer a picture of the ontology of shadows which, together with an alternative view of causation, constitutes the basis for a new solution that uniformly solves both puzzles.EnglishArticle10.1017/S00318191100000571469-817X