Time in Berlin
Ahues began at the age of 18 years with the chess games. In 1907 he moved to Berlin. Here he became a member of the Berlin Chess Club. In 1910 he was in Hamburg in major international tournament at the Third Congress of the German Chess Federation. In 1911 he won the Berlin championship.
During the First World War he served as a soldier. He got into Romanian captivity (up to 1919).
In 1920 he won at the 20th Congress of the German Chess Federation the main tournament, which was linked to the achievement of the master craftsman. Between 1921 and 1953 he participated nine times at German Championships. It was his greatest success in 1929 when he was in Duisburg " masters of Germany ." In 1935, he reached a shared second place in Bad Pyrmont. Previously, he shared in Berlin with Rudolf Spielmann and Ernst Grünfeld third place, in 1927, he was in Bad Niendorf Fourth, 1929 in Venice Second.
Ahues participated in three chess Olympiads and scored each time a positive result: 1930 in Hamburg ( 7.5 out of 14 on board 3 ), 1931 in Prague (7 out of 13 on board 2 ) and at the unofficial 1936 Olympics in Munich (10 from 17 on board 2, 4, -1, = 12).
Time in Schleswig -Holstein
After the end of World War II Ahues moved to Schleswig -Holstein and last lived in Hamburg. He participated in many West German tournaments at the age of 70 years he played in 1953 in Leipzig again with the German championship with and reached number 7 to 9 With the Hamburger SK he was 1958 German team champion.
The World Chess Federation FIDE awarded him in 1950 the newly created title of International Master.
With 81 years he still won the Hamburg Lightning Championship, in September 1968, he was club champion.
His best historical Elo rating was 2651st This he reached in January 1931.
Ahues was a " staunch vegetarians. " His son, Herbert Ahues, is Grandmaster for chess compositions.