Rudolf Teschner (16 February 1922, Potsdam -- 23 July 2006, Berlin-Steglitz) was a German chess master and writer.
Rudolf Teschner ( 16 February 1922 , Potsdam -- 23 July 2006 , Berlin - Steglitz ) was a German chess master and writer .
What nationality of Rudolf Teschner?
What nationality of Rudolf Teschner ?
German
German