三堀 将 (1910-1996) Go reporter and writer, for the Yomiuri Shimbun. Pen name in the newspaper was 'Fukumenshi' 覆面子.
'Fukumenshi' (literally, masked man) is pen name used by a number of go journalists for the Yomiuri Shimbun newspaper in Japan, so in order to distinguish with other writers, he was referred to as Mihori Fukumenshi.
Author of Japanese Game of Go which was translated into English by Z. T. Iwado as volume 27 of the Tourist Library published in 1939 by the Board of Tourist Industry of the Japanese Government Railways. And he started the convention of writing Go technical terms in katakana in the 1940s. Also, Nadare joseki was named by him. He was awarded Okura Prize in 1988. John Fairbairn once described Mihori as perhaps the most famous go writer ever.