Ahues represented Germany thrice in Chess Olympiads.

In 1940, he tied for 6–9th in Bad Oeynhausen (7th GER-ch; Georg Kieninger won).

In 1942, he took 10th in Munich (EUR-ch, Wertungsturnier – Qualification Tournament; Gösta Danielsson won).

After World War II, Ahues lived in West Germany.

His son, Herbert Ahues, was a famous chess composer.