| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. O'Kelly vs H Kokkoris |
| ½-½ | 32 | 1962 | Varna Olympiad qual-1 | A25 English |
| 2. H Kokkoris vs Uhlmann |
| 0-1 | 27 | 1962 | Varna Olympiad qual-1 | C19 French, Winawer, Advance |
| 3. K Skold vs H Kokkoris |
| 1-0 | 32 | 1962 | Varna Olympiad qual-1 | C44 King's Pawn Game |
| 4. Unzicker vs H Kokkoris |
| 1-0 | 28 | 1962 | Varna Olympiad qual-1 | C97 Ruy Lopez, Closed, Chigorin |
| 5. H Kokkoris vs J Diez del Corral |
| 0-1 | 33 | 1962 | Varna Olympiad qual-1 | B21 Sicilian, 2.f4 and 2.d4 |
| 6. H Kokkoris vs Botvinnik |
  | 0-1 | 36 | 1962 | Varna Olympiad qual-1 | B74 Sicilian, Dragon, Classical |
| 7. S Johannessen vs H Kokkoris |
| 0-1 | 34 | 1962 | Varna Olympiad qual-1 | C34 King's Gambit Accepted |
| 8. H Kokkoris vs S Johannessen |
| 0-1 | 36 | 1962 | Varna Olympiad Final-C | B21 Sicilian, 2.f4 and 2.d4 |
| 9. H Kokkoris vs V Bergraser |
| 1-0 | 31 | 1962 | Varna Olympiad Final-C | B01 Scandinavian |
| 10. N Suer vs H Kokkoris |
| 1-0 | 40 | 1962 | Varna Olympiad Final-C | C83 Ruy Lopez, Open |
| 11. H Kokkoris vs W Estrada Degrandi |
| ½-½ | 42 | 1962 | Varna Olympiad Final-C | B09 Pirc, Austrian Attack |
| 12. Y Pustina vs H Kokkoris |
| 0-1 | 95 | 1962 | Varna Olympiad Final-C | D46 Queen's Gambit Declined Semi-Slav |
| 13. H Kokkoris vs L Popov |
| 1-0 | 34 | 1964 | Tel Aviv Olympiad qual-7 | B21 Sicilian, 2.f4 and 2.d4 |
| 14. H Kokkoris vs G Kleopas |
| 0-1 | 47 | 1964 | Tel Aviv Olympiad qual-7 | B06 Robatsch |
| 15. K Darga vs H Kokkoris |
| 1-0 | 41 | 1964 | Tel Aviv Olympiad qual-7 | D37 Queen's Gambit Declined |
| 16. J Camarena vs H Kokkoris |
| 0-1 | 41 | 1964 | Tel Aviv Olympiad Final-C | D63 Queen's Gambit Declined, Orthodox Defense |
| 17. H Kokkoris vs E Bhend |
| 0-1 | 55 | 1964 | Tel Aviv Olympiad Final-C | B10 Caro-Kann |
| 18. J Sitiriche vs H Kokkoris |
| 0-1 | 23 | 1964 | Tel Aviv Olympiad Final-C | E85 King's Indian, Samisch, Orthodox Variation |
| 19. G Villarroel vs H Kokkoris |
| 1-0 | 71 | 1964 | Tel Aviv Olympiad Final-C | B50 Sicilian |
| 20. I Kanko vs H Kokkoris |
| 1-0 | 40 | 1964 | Tel Aviv Olympiad Final-C | A71 Benoni, Classical, 8.Bg5 |
| 21. G Tringov vs H Kokkoris |
| 1-0 | 35 | 1967 | Sofia tt | B90 Sicilian, Najdorf |
| 22. H Kokkoris vs B Malich |
| ½-½ | 64 | 1967 | Sofia tt | B21 Sicilian, 2.f4 and 2.d4 |
| 23. H Kokkoris vs G Tringov |
| 0-1 | 19 | 1967 | Sofia tt | B21 Sicilian, 2.f4 and 2.d4 |
| 24. V Ciocaltea vs H Kokkoris |
| 1-0 | 34 | 1967 | Sofia tt | C43 Petrov, Modern Attack |
| 25. H Kokkoris vs Fischer |
| 0-1 | 45 | 1968 | Clock simul, 5b | B95 Sicilian, Najdorf, 6...e6 |
Kibitzing
