- Country: Spain
- Genres: Drama, Short, Thriller
- Release: 2016-04-24
- Director: Pablo de Aramburu
- Writers: Pablo de Aramburu
- Language: Spanish
- Stars: Miguel Hermoso Arnao , Pedro Lanzas , Juanma Lara , Virginia DeMorata
- Runtime: 20 min
- Awards: 1 win
- AKA: A prueba (Germany) , A prueba (Spain) , A prueba
- Plot: Marta, who is in probationary period in the border guard, realizes how a simple traffic ticket on the border turns into blackmail on the authority. This fact will make her question everything.
- IMDB:tt5611782