| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. A Kostjoerin vs C Brunk |
| 1-0 | 31 | 1976 | Haifa Olympiad | B40 Sicilian |
| 52. A Kostjoerin vs J Cuellar |
| 0-1 | 59 | 1976 | Haifa Olympiad | B84 Sicilian, Scheveningen |
| 53. A Kostjoerin vs H Hanno |
| 1-0 | 61 | 1976 | Haifa Olympiad | B53 Sicilian |
| 54. J Midjord vs A Kostjoerin |
| 1-0 | 35 | 1976 | Haifa Olympiad | C50 Giuoco Piano |
| 55. A Kostjoerin vs H Reichgeld |
| ½-½ | 29 | 1976 | Haifa Olympiad | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 56. A Kostjoerin vs F Guijarro |
| ½-½ | 17 | 1976 | Haifa Olympiad | C41 Philidor Defense |
| 57. A Kostjoerin vs P Lam |
| ½-½ | 16 | 1976 | Haifa Olympiad | C68 Ruy Lopez, Exchange |
| 58. A Kostjoerin vs M Kennefick |
| ½-½ | 22 | 1976 | Haifa Olympiad | B03 Alekhine's Defense |
Kibitzing
