<prompt> Bhala okuqhubekayo kwalesi sigaba - UKarff wadlala eMqhudelwaneni Wamazwe Omhlaba Wabesifazane We-Chess: 1937 Stockholm, edlalela iPalestine futhi efaka indawo yesithupha eyawina uVera Menchik; 1939 Buenos Aires, edlalela i-US futhi efaka indawo yesi-5 eyawina futhi yi-Menchik; 1949 eMoscow  <response>: , edlalela i-U.S. eyanqotshwa nguLyudmila Rudenko. Lapho i-FIDE isungula iziqu ngo-1950, uMona May Karff wayengomunye wabesifazane abathathu baseMelika ukuthola isihloko se-International Woman Master. 