Josef Hasek (Czechoslovakia,Tuesday * 02.03.1897 - † 1981), one of the greatest study composers from the last century

Prominent study composer and author of 328 endgame studies

Published by John Beasley, March 1999: 

"One of the most attractive schools of chess study composition has been that of the Czechs and their Central European neighbours. I say "school" with slight reservations, because the number of participants has barely crept into double figures, but nevenheless a style and pattern is apparent. It is chamcterized by naturalness of position combined with piquancy of play, and is much closer to the parent game than the more aiificial "puzzle" study pioneered by Troitzky in Russia (though Troitzky's positions seem naturalness itself compared with what is being otlered nowadays). lf Richard Réti and Artur Mandler are its best known, there were several others who also produced some finest work: Oldřich Duras, Josef Moravec, Frantjiek Dedrle... One was also Josef Hasek"

About his endgame studies:                                                                                                                                                  Hasek is a very well-known study composer who designed his studies in a well-considered and visually appealing way. His works appeal to chess players because of their closeness to the chess game.

"His studies are never record presentations and do not aim to dazzle with complicated solutions. Instead, the solutions to his endgame studies are based on the naturalness of the starting position and the moves. His studies are unaffected and appear like from a game of chess. This is why Hasek´s studies are one of the most sought-after study composers today." (Peter Siegfried Krug)

Others

 6 endgame studies with solution are selected on Website ARVES.org (by edithor Peter Boll)

Source: schachstudienkomponisten.fandom.com