8 x 8: A Chess-Sonata in 8 Movements is an American experimental film directed by Hans Richter, Marcel Duchamp, and Jean Cocteau. Described by Richter as "part Freud, part Lewis Carroll" and filmed partially on the lawn of Duchamp's summer house in Southbury, Connecticut.
| Directing | Hans Richter | Director |
| Sound | Robert Abramson | Music |
| Sound | John Gruen | Music |
| Sound | Douglas Townsend | Music |
| Directing | Marcel Duchamp | Co-Director |
| Writing | Hans Richter | Writer |
| Directing | Jean Cocteau | Director |