Bengt Holbek

Bengt Holbek (April 1, 1933 – August 27, 1992) was a Danish folklorist who wrote one of the definitive works of fairy tale scholarship entitled "Interpretation of Fairy Tales" (1987). 
This 660 page book details a method for use in the analysis of fairy tales and applies it to the tales found in the repertoires of five Danish peasants collected by Evald Tang Kristensen in the mid 19th century.
In brief, Holbek posits that fairy tales can be broken down into five "moves" which work to reconcile the three main tensions which are addressed by the fairy tale. These tensions are those between "youths" and "adults", those of "low status" and those of "high status", and "male" and "female". The relationships between these are frequently represented on a cube. Imagine a cube, place youth on the left, adulthood on the right, low status on the bottom, high status on the top, male on the front and female on the back. It is Holbek's estimation that one of the most important things that distinguish the fairy tale from the more general category of folktale is the fact that the tale ends with a marriage. By his definition, if the tale one is considering does not involve a marriage, it is not a fairy tale. 
At the beginning of a fairy tale, the protagonist, who can be either male or female, generally starts out as an unmarried youth of low status. This person generally becomes involved with an unmarried youth of high status and must undergo trials in order to prove their worth, thereby attaining high status so as to be worthy of their lover. Here the characters move from the bottom of the cube to the top of it. Over the course of the tale, the characters also cease to act as children and pass from the sphere of youth to the sphere of adulthood. The characters move from the left half of the cube to the right. The tension between male and female is negotiated at the end by the marriage between the protagonist and their lover, rendering the space between the front and back of the cube irrelevant. 
Holbek's moves can be described as follows: 