Tusi se faaauauina mo lenei parakalafa - Na taalo Karff i le tolu o le Women's World Chess Championships: 1937 Stockholm, taalo mo Palesitina ma tuu lona ono (manumalo e Vera Menchik); 1939 Buenos Aires
, taalo mo le U.S. ma tuu 5 (manumalo foi e Menchik); 1949 Moscow, taalo mo le U.S. (manumalo e Lyudmila Rudenko). Ina ua faavaeina e le FIDE suafa i le 1950, o Mona May Karff o se tasi o tamaitai Amerika e toatolu na mauaina le suafa o le International Woman Master.