| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 76. H Kramer vs P Ostojic |
| ½-½ | 11 | 1966 | Hoogovens-B | E62 King's Indian, Fianchetto |
| 77. A Konstantinopolsky vs P Ostojic |
| 0-1 | 71 | 1966 | Amsterdam IBM-B | A48 King's Indian |
| 78. P Ostojic vs R Hartoch |
| 1-0 | 75 | 1966 | Amsterdam IBM-B | C91 Ruy Lopez, Closed |
| 79. E Scholl vs P Ostojic |
| 1-0 | 32 | 1966 | Amsterdam IBM-B | B56 Sicilian |
| 80. P Ostojic vs J Enevoldsen |
| 0-1 | 51 | 1966 | Amsterdam IBM-B | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
| 81. P Bakker vs P Ostojic |
| ½-½ | 35 | 1966 | Amsterdam IBM-B | A07 King's Indian Attack |
| 82. P Ostojic vs L Kerkhoff |
| ½-½ | 68 | 1966 | Amsterdam IBM-B | C73 Ruy Lopez, Modern Steinitz Defense |
| 83. H Mueller vs P Ostojic |
| ½-½ | 45 | 1966 | Amsterdam IBM-B | A48 King's Indian |
| 84. T Ghitescu vs P Ostojic |
| 1-0 | 30 | 1966 | Amsterdam IBM-B | A56 Benoni Defense |
| 85. P Ostojic vs A Dueckstein |
| 1-0 | 41 | 1966 | Amsterdam IBM-B | C63 Ruy Lopez, Schliemann Defense |
| 86. J Szily vs P Ostojic |
| ½-½ | 33 | 1967 | Hoogovens-B | B73 Sicilian, Dragon, Classical |
| 87. P Ostojic vs E Scholl |
| 1-0 | 49 | 1967 | Hoogovens-B | C85 Ruy Lopez, Exchange Variation Doubly Deferred (DERLD) |
| 88. A Medina Garcia vs P Ostojic |
| 0-1 | 27 | 1967 | Hoogovens-B | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 89. P Ostojic vs D Marovic |
| 0-1 | 54 | 1967 | Hoogovens-B | B11 Caro-Kann, Two Knights, 3...Bg4 |
| 90. F van Wijngaarden vs P Ostojic |
| 0-1 | 35 | 1967 | Hoogovens-B | B57 Sicilian |
| 91. P Ostojic vs D Keller |
| 1-0 | 79 | 1967 | Hoogovens-B | C04 French, Tarrasch, Guimard Main line |
| 92. B Sandor vs P Ostojic |
| 0-1 | 34 | 1967 | Hoogovens-B | A04 Reti Opening |
| 93. P Ostojic vs N Karaklajic |
| ½-½ | 50 | 1967 | Hoogovens-B | C82 Ruy Lopez, Open |
| 94. S Tatai vs P Ostojic |
| 1-0 | 42 | 1967 | Hoogovens-B | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 95. M Ujtelky vs P Ostojic |
| ½-½ | 61 | 1967 | Hoogovens-B | A10 English |
| 96. P Ostojic vs T van Scheltinga |
| 0-1 | 32 | 1967 | Hoogovens-B | B80 Sicilian, Scheveningen |
| 97. J Enevoldsen vs P Ostojic |
| 0-1 | 28 | 1967 | Hoogovens-B | B56 Sicilian |
| 98. P Ostojic vs Westerinen |
| 1-0 | 28 | 1967 | Hoogovens-B | C84 Ruy Lopez, Closed |
| 99. H Bredewout vs P Ostojic |
| 1-0 | 50 | 1967 | Hoogovens-B | B88 Sicilian, Fischer-Sozin Attack |
| 100. P Ostojic vs M Nainggolan |
| 1-0 | 54 | 1967 | Hoogovens-B | B89 Sicilian |
Kibitzing
