Career
In 1957 he obtained the title of International Master from FIDE. He was 2–3 in the Zonal tournament in Berg en Dal 1960 and twice 1–4 in Christmas tournaments in Reggio Emilia (1963/1964 and 1964/1965). Teschner played in the 1962 Interzonal tournament at Stockholm. FIDE awarded him the complimentary Grandmaster title in 1992, the first in history.
Teschner worked between 1950 and 1988 as publisher of Deutsche Schachzeitung (German Chess News, the World"s oldest surviving chess magazine), and wrote many books and articles about chess.