<prompt> Kalima dǝga tǝmzǝ: Karff dǝ kǝla kamuwabe World Chess Championships yakkǝlan biske: 1937 Stockholm, Palestin ro biske kuru na kǝn arakkǝmi Vera Menchik ye kǝnasarzǝna;  <response>: 1939 Buenos Aires, U.S. lan bikke makkarye 5th Menchikye kǝnasartǝna; 1949 Moscow, U.S. lan bikke makkarye Lyudmila Rudenkoye kǝnasartǝna. Loktu FIDE ye 1950 lan daraja darajaa fandobe dawarzana dən, Mona May Karff dә kamuwa Americaye yakkәye falnza dәye shima daraja International Woman Master ye dәa suwudәna. 