 In 1934, he lost to Aron Nimzowitsch (+1 –2 =3) in Stockholm.In September 1935, he played at a match Sweden vs Germany (Scheveningen system), and took 2nd individual result, behind Ståhlberg, in Zoppot (Sopot).Stoltz played for Sweden in nine Chess Olympiads (1927–1937, 1952,1954) and in 3rd unofficial Chess Olympiad at Munich 1936