| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 76. T van Scheltinga vs I Koenig |
| 0-1 | 29 | 1936 | non-FIDE Munich Olympiad | E32 Nimzo-Indian, Classical |
| 77. I Koenig vs B N Rometti |
| 1-0 | 30 | 1936 | non-FIDE Munich Olympiad | B10 Caro-Kann |
| 78. I Koenig vs O Kinnmark |
| 1-0 | 36 | 1936 | non-FIDE Munich Olympiad | C14 French, Classical |
| 79. I Koenig vs A Kiprov |
| 1-0 | 41 | 1936 | non-FIDE Munich Olympiad | B10 Caro-Kann |
| 80. I Koenig vs M Napolitano |
| 0-1 | 49 | 1936 | non-FIDE Munich Olympiad | B58 Sicilian |
| 81. M Paternoster vs I Koenig |
| 0-1 | 41 | 1937 | Belgrade Championship | E24 Nimzo-Indian, Samisch |
| 82. I Koenig vs P Trifunovic |
| 0-1 | 37 | 1937 | Belgrade Championship | A07 King's Indian Attack |
| 83. I Koenig vs V Filipovic |
| ½-½ | 36 | 1937 | Belgrade Championship | A15 English |
| 84. S Vukovic vs I Koenig |
| 0-1 | 27 | 1937 | Belgrade Championship | E32 Nimzo-Indian, Classical |
| 85. I Koenig vs I Izvekov |
| 1-0 | 27 | 1937 | Belgrade Championship | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 86. S Matvejev vs I Koenig |
| ½-½ | 28 | 1937 | Belgrade Championship | E32 Nimzo-Indian, Classical |
| 87. I Koenig vs V Petrovic |
| 1-0 | 47 | 1937 | Belgrade Championship | D30 Queen's Gambit Declined |
| 88. D Jurisic vs I Koenig |
| 0-1 | 81 | 1937 | Belgrade Championship | A47 Queen's Indian |
| 89. I Koenig vs V Tomovic |
 | 0-1 | 30 | 1937 | Belgrade Championship | E41 Nimzo-Indian |
| 90. I Koenig vs R Savic |
| 1-0 | 44 | 1937 | Belgrade Championship | D35 Queen's Gambit Declined |
| 91. I Kindij vs I Koenig |
| ½-½ | 54 | 1937 | Belgrade Championship | A04 Reti Opening |
| 92. I Koenig vs M Broeder |
| 0-1 | 37 | 1937 | Yugoslav Championship | E53 Nimzo-Indian, 4.e3 |
| 93. I Koenig vs J Foltys |
| ½-½ | 37 | 1937 | Yugoslav Championship | D35 Queen's Gambit Declined |
| 94. E Gereben vs I Koenig |
| 1-0 | 35 | 1937 | Yugoslav Championship | E90 King's Indian |
| 95. I Koenig vs Rossolimo |
| 0-1 | 30 | 1937 | Paris (l'Expostion) | B06 Robatsch |
| 96. L Prins vs I Koenig |
| 1-0 | 26 | 1938 | Margate-B | A40 Queen's Pawn Game |
| 97. L Prins vs I Koenig |
| 1-0 | 20 | 1939 | Hastings Prem Res A 1938/39 | A40 Queen's Pawn Game |
| 98. F Parr vs I Koenig |
| ½-½ | 29 | 1939 | Margate Premier Reserves A | E40 Nimzo-Indian, 4.e3 |
| 99. T van Scheltinga vs I Koenig |
| ½-½ | 34 | 1939 | Margate Premier Reserves A | E32 Nimzo-Indian, Classical |
| 100. L Prins vs I Koenig |
| ½-½ | 44 | 1939 | Margate Premier Reserves A | A40 Queen's Pawn Game |
Kibitzing
