Studies composed by

Frantz Apschenek or

Fricis Apšenieks or Fritzis Apscheneek

(Latvia, 7.4.1894 - 25.4.1941)

A lot information can be found about this Latvian Chess master at wikipedia.

Also some information at Edward Winter Chess Notes.

(All his studies, more exact dates, possible corrections or cooks and exact details about sources can be found in the

Harold van der Heijden database V (31-12-2015) )