Sixth Position – Still Images and Gifs
"'Yakobson, however, who was completely cut off from contemporary Western choreography, had invented all this independently. He kept saying that it is necessary to introduce innovation into our traditional ballet class, so that it would open possibilities for the dancers. The legs should be able to move in any imaginable way: not only in the customary fifth position but in reverse as well [the toes pointing inward],' [Irina Yakobson] said. 'He was very proud of this sixth position.'"
"Like a Bomb Going Off: Leonid Yakobson and Ballet as Resistance in Soviet Russia," by Janice Ross, Yale University Press, 2015, p. 395.
(An extensive analysis of each dance depicted is contained in the book.)