Who is the chess-genius Magnus Carlsen? The well-known Norwegian historian and author Aage G. Sivertsen has followed Carlsen for years. Sivertsen has accompanied him to tournaments, talked to chess players at the top of the world, and with Carlsen's family and relatives. The result can be found in this book. It is as much about psychology as it is about chess. It shows that it is no coincidence that Magnus Carlsen has been the world's best chess player for the past 10 years.