EN
The article deals with Zdenek Fibich's (1850-1900) Variations in B major for piano which Vladimir Hudec, the author of the 'Tematicky katalog Zdenka Fibicha' (Thematic Catalogue of Zdenek Fibich's Works), believed to have been lost. Its complete autograph, however, was recently discovered by the author of this article in the music collection of the Prague Hlahol Choral Society. The discovery of this composition, therefore, has substantially changed the existing knowledge of this work - as shown in the following paper, describing its context, such as the Fibich sources linked to it (including the Moser catalogue and the estate of Stanislav Kamenicky). The article also points out the discrepancies found in the secondary literature.