In 1923 he tied for 2nd-3rd in Frankfurt (the 23rd DSB–Congress, Ernst Grünfeld won).
[1] He shared with Karl Gilg 1st place at Vienna 1926 (DSV Kongress), tied for 3rd-4th at Bremen 1927, won at Hamburg 1928 (Quadrangular), took 2nd behind Herbert Heinicke at Hamburg 1929, shared 4th at Duisburg (the 26th DSB Congress, Carl Ahues), and tied for 6-7th in Swinemünde (Friedrich Sämisch won).
[2] Wagner played for Germany in Chess Olympiads.
He won team bronze medal at Hamburg 1930.
[3] Wagner was awarded the International Master title in 1953.