Five-card stud is the earliest form of the card game stud poker, originating during the American Civil War, but is less commonly played today than many other more popular poker games. It is still a popular game in parts of the world, especially in Finland where a specific variant of five-card stud called Sökö (also known as Canadian stud or Scandinavian stud) is played. The word sökö is also used for checking in Finland ("I check" = "minä sökötän").