Selection of studies composed by

Nicolai Dimitrievitch Grigoriev

(Russia, 14.8.1895 - 10.11.1938).

More information about him at: Wikipedia,  Chess.com and ChessPro.ru

At https://chesspro.ru/thesaurus/neishtadt_chto_ni_sudba_to_tragedia8 Vladimir Neistadt writes about him

and we can read that he sadly died of infection complications due to an appendices operation.

(So he was not arrested by the NKVD as other sources claim).

Many interesting other composers are mentioned there as well, with a lot of old pictures!

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

Harold van der Heijden (HHdbVI))