Czech Composer. He was the editor of the chess columns of “Narodny Politika” 1907-1945, “Lyudova Demorazy” 1946-55. He has published more than 2350 problems Bohemian style problems mostly three-movers and Neo-Czech style. He won at the competitions more than 100 prizes, 35 firsts. His is co-author with White, for his Christmas edition, Dame und eine

German problemist, author of 600 problems. He was one of the leading theoreticians in the beginning of the century for the Neo-German Strategic School. Author of Antiform (1929) which he was the co-author with Mongredien. In 1935, he published Miniatures Strategiques containing 200 miniatures compositions. He contributed immensely to the growth of helped mate thanks

Well-known Czechoslovak chess composer, Grandmaster for Chess Compositions (1976), brother of Ludek. He was specialized in the sphere of three- and four-mover problem with direct checkmates with at least 1000 problems published. Editor of chess compositions in the magazine Československy šach for 20 years. The author of the books Sachová úloha(Praha, 1953), «Vybrané šahove skladby”

Finnish chess solver GM CS (2000). World Champion of Chess Solving in 2001. A member of the team which won the world championship of chess solving in 1995. Winner of the Chess Solving Championship of Belgium in 2003, the Chess Solving Championship of Finland in 2005 and 2007.

French problemist, who composed 250 problems of all kinds, with a preference for fairy problems. He was awarded the title of International Judge for Chess Compostision in 1959. Between 1959 and 1974 he was the editor of a column dedicated to chess composition in the Europe-Echecs.

Australian problemist. Member of the Bohemian School, composer of 400 three- and more-movers. They are strategic problems with bohemian style mates.

Italian problemist. Became International Judge of chess composition in 1988.

German problemist. He was a specialist of logical multiple moves. His name was given to a multiple moves theme.

German composer, author of 500 problems with a preference for helpmates. Chemist. He was awarded the title of International Judge in 1958 and Master Honoris Causa for chess composition in 1986. Author of Echo im Hilfsmatt (1950) containing 375 helpmates and Wenigsteiner im Hilfsmatt (1977).

Hungarian composer and author of (about) 750 compositions mainly two- or three-movers. He became an International Judge in 1956. He co-authored with Kovacs and Schor of a dictionary on problem terminology Feladvany Muszotrin 1926. He was the chief editor of the magazine Magyar Sakkvilag and President of the problem section of the FIDE magazine in