| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. R Krogius vs A Tschepurnoff |
| 1-0 | 45 | 1936 | Finnish championship | A96 Dutch, Classical Variation |
| 52. R Krogius vs E Lundin |
| 0-1 | 26 | 1936 | Nordic Congress, Helsinki | A13 English |
| 53. R Krogius vs S Rosselli del Turco |
 | 1-0 | 28 | 1936 | non-FIDE Munich Olympiad | A10 English |
| 54. I Denes vs R Krogius |
| 1-0 | 41 | 1936 | non-FIDE Munich Olympiad | A44 Old Benoni Defense |
| 55. P Johner vs R Krogius |
| 0-1 | 34 | 1936 | non-FIDE Munich Olympiad | A44 Old Benoni Defense |
| 56. R Krogius vs Najdorf |
| 0-1 | 31 | 1936 | non-FIDE Munich Olympiad | B20 Sicilian |
| 57. B Nielsen vs R Krogius |
| 1-0 | 57 | 1936 | non-FIDE Munich Olympiad | C68 Ruy Lopez, Exchange |
| 58. Eliskases vs R Krogius |
| 1-0 | 22 | 1936 | non-FIDE Munich Olympiad | A44 Old Benoni Defense |
| 59. R Krogius vs A Gibaud |
| 1-0 | 27 | 1936 | non-FIDE Munich Olympiad | A21 English |
| 60. H Felderhof vs R Krogius |
| 1-0 | 34 | 1936 | non-FIDE Munich Olympiad | C76 Ruy Lopez, Modern Steinitz Defense, Fianchetto Variation |
| 61. M Schreiber vs R Krogius |
| 1-0 | 19 | 1936 | non-FIDE Munich Olympiad | A43 Old Benoni |
| 62. A Tsvetkov vs R Krogius |
| 0-1 | 44 | 1936 | non-FIDE Munich Olympiad | A04 Reti Opening |
| 63. Petrov vs R Krogius |
 | 1-0 | 38 | 1936 | Helsinki 50-year Jubilee | D20 Queen's Gambit Accepted |
| 64. R Krogius vs T Gauffin |
| 1-0 | 32 | 1937 | Finland National Tournament 13th | A18 English, Mikenas-Carls |
| 65. R Krogius vs A Ojanen |
| 1-0 | 14 | 1944 | Helsinki | B21 Sicilian, 2.f4 and 2.d4 |
| 66. Nils Bergqvist vs R Krogius |
| 0-1 | 56 | 1945 | Match/Nation FIN-SWE | D22 Queen's Gambit Accepted |
| 67. R Krogius vs Nils Bergqvist |
| 0-1 | 34 | 1945 | Match/Nation FIN-SWE | C05 French, Tarrasch |
| 68. R Krogius vs E Ahman |
| 1-0 | 29 | 1948 | Saltsjobaden tt | B85 Sicilian, Scheveningen, Classical |
| 69. T Haahr vs R Krogius |
| 1-0 | 41 | 1948 | Saltsjobaden tt | C71 Ruy Lopez |
Kibitzing
