<prompt> Bhala okuqhubekayo kwalesi sigaba - UKarff wadlala kuma-World Womens Chess Championships amathathu: ngo-1937 eStockholm, edlalela iPalestine futhi efaka indawo yesithupha eyawina uVera Menchik; ngo-1939 eBuenos Aires  <response>: , edlalela i-U.S. futhi efaka indawo yesi-5 eyabuye yanqotshwa nguMenchik; 1949 eMoscow, 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. 