| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. A Rivero vs M Karff |
| 0-1 | 43 | 1941 | USA Championship Match (Women) | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 27. M Karff vs A Rivero |
| 1-0 | 25 | 1941 | USA Championship Match (Women) | B29 Sicilian, Nimzovich-Rubinstein |
| 28. A Rivero vs M Karff |
| 0-1 | 78 | 1941 | USA Championship Match (Women) | D08 Queen's Gambit Declined, Albin Counter Gambit |
| 29. M Karff vs A Rivero |
| 1-0 | 26 | 1941 | USA Championship Match (Women) | D04 Queen's Pawn Game |
| 30. A Rivero vs M Karff |
| 1-0 | 34 | 1941 | USA Championship Match (Women) | A52 Budapest Gambit |
| 31. M Karff vs A Rivero |
| 1-0 | 30 | 1941 | USA Championship Match (Women) | B29 Sicilian, Nimzovich-Rubinstein |
| 32. M Karff vs M Bain |
| 1-0 | 32 | 1942 | United States Championship (Women) | A14 English |
| 33. M Karff vs N Roos |
| 1-0 | 28 | 1942 | United States Championship (Women) | B32 Sicilian |
| 34. G Gresser vs M Karff |
| 1-0 | 33 | 1944 | United States Championship (Women) | B40 Sicilian |
| 35. W Henschel vs M Karff |
 | 0-1 | 16 | 1946 | United States Championship (Women) | A47 Queen's Indian |
| 36. M Karff vs M Bain |
| 1-0 | 44 | 1946 | United States Championship (Women) | C02 French, Advance |
| 37. G Gresser vs M Karff |
| 0-1 | 64 | 1946 | United States Championship (Women) | B71 Sicilian, Dragon, Levenfish Variation |
| 38. M Karff vs A Raettig |
| 1-0 | 39 | 1946 | United States Championship (Women) | C00 French Defense |
| 39. M Karff vs K Slater |
| ½-½ | 41 | 1946 | United States Championship (Women) | B56 Sicilian |
| 40. F Heemskerk vs M Karff |
| ½-½ | 54 | 1949 | World Championship (Women) 1949/50 | E40 Nimzo-Indian, 4.e3 |
| 41. M Karff vs I Larsen |
| 1-0 | 63 | 1949 | World Championship (Women) 1949/50 | A13 English |
| 42. J Langos vs M Karff |
| 0-1 | 61 | 1949 | World Championship (Women) 1949/50 | B74 Sicilian, Dragon, Classical |
| 43. M T Mora Iturralde vs M Karff |
| 1-0 | 73 | 1949 | World Championship (Women) 1949/50 | C89 Ruy Lopez, Marshall |
| 44. M Karff vs V Borisenko |
| 0-1 | 48 | 1949 | World Championship (Women) 1949/50 | D45 Queen's Gambit Declined Semi-Slav |
| 45. E Tranmer vs M Karff |
| 1-0 | 54 | 1949 | World Championship (Women) 1949/50 | C86 Ruy Lopez, Worrall Attack |
| 46. M Karff vs L Rudenko |
| 0-1 | 34 | 1950 | World Championship (Women) 1949/50 | E17 Queen's Indian |
| 47. O Rubtsova vs M Karff |
| 1-0 | 42 | 1950 | World Championship (Women) 1949/50 | B76 Sicilian, Dragon, Yugoslav Attack |
| 48. M Karff vs N Hruskova-Belska |
| ½-½ | 41 | 1950 | World Championship (Women) 1949/50 | A84 Dutch |
| 49. C Benini vs M Karff |
| 1-0 | 43 | 1950 | World Championship (Women) 1949/50 | A82 Dutch, Staunton Gambit |
| 50. M Karff vs R Hermanowa |
| 1-0 | 40 | 1950 | World Championship (Women) 1949/50 | D94 Grunfeld |
Kibitzing
