Danish chess composer and International Master Karl Adolf Koefoed Larsen was probably the most important Danish chess composer.

He composed more than 600 chess problems in all genres. He became International Judge in 1956

and was the editor of the Danish chess problem magazine "Magasinet" from 1930 until 1958 and of the "Skakbladet".

His father was Peder Andreas Larsen, who was also a chess problemist.

Source: arves.org