Pedzisa mutsara unotevera: Karff akatamba mumakwikwi matatu eWorld Women's Chess Championships: 1937 Stockholm, achitamba kuPalestine ndokuisa nzvimbo yechitanhatu (yakundwa naVera Menchik);
1939 Buenos Aires, ichitambira U.S. uye ichiisa 5th (yakundwawo naMenchik); 1949 Moscow, ichitambira U.S. (yakundwa naLyudmila Rudenko). Apo FIDE yakagadza mazita muna 1950, Mona May Karff akanga ari mumwe wevakadzi vatatu vokuAmerica kugamuchira zita reInternational Woman Master.