Mezue ahịrịokwu na-esonụ: Karff gbara bọọlụ n'asọmpi iko mba ụwa ụmụnwaanyị atọ: 1937 Stockholm, na-agbara Palestine bọọlụ ma nọrọ n'ọkwa nke isii (nke Vera Menchik meriri);
1939 Buenos Aires, na-egwu maka US ma tinye 5th (nke Menchik meriri); 1949 Moscow, na-egwu maka US (nke Lyudmila Rudenko meriri). Mgbe FIDE guzobere utu aha na 1950, Mona May Karff bụ otu n'ime ụmụ nwanyị America atọ natara utu aha International Woman Master.