<prompt> Qedela le nkulumo elandelayo: Kusukela ngasekupheleni kwawo-1930 kuya ekuqaleni kwawo-1940, uStoffels wayengomunye wabadlali be-chess besifazane abahamba phambili eBelgium. Wanqoba iBelgian Womens Chess Championships izikhathi ezinhlanu: ngo-1938, 1939, 1940, 1942 no-1944. Wabamba iqhaza izikhathi eziningana emqhudelwaneni we-Antwerp interclub De Zilveren toren neqembu le-Antwerp chess Het schaakbord kusukela ngo-1929 kuya ku-1934. Ngo-1939, uStoffels wabamba iqhaza  <response>: Umqhudelwano Womhlaba Wabesifazane We-Chess ngo-1939 eBuenos Aires, lapho aqeda khona endaweni ye-16. 