| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. O Benkner vs K Tsiknopoulos |
| ½-½ | 77 |
1952 |
Helsinki ol (Men) | C78 Ruy Lopez |
| 2. G Pfeiffer vs O Benkner |
| 1-0 | 26 |
1952 |
Helsinki ol (Men) | C90 Ruy Lopez, Closed |
| 3. O Benkner vs P Mueller |
| 1-0 | 32 |
1952 |
Helsinki ol (Men) | E90 King's Indian |
| 4. O Benkner vs F Olafsson |
| ½-½ | 44 |
1952 |
Helsinki ol (Men) | E70 King's Indian |
| 5. O Benkner vs C Poulsen |
| 1-0 | 31 |
1952 |
Helsinki ol (Men) | E06 Catalan, Closed, 5.Nf3 |
| 6. F De Carvalho vs O Benkner |
| ½-½ | 41 |
1952 |
Helsinki ol (Men) | C78 Ruy Lopez |
| 7. Pachman vs O Benkner |
| 0-1 | 49 |
1952 |
Helsinki ol (Men) | E40 Nimzo-Indian, 4.e3 |
| 8. O Benkner vs F Olafsson |
| ½-½ | 80 |
1952 |
Helsinki ol (Men) | E71 King's Indian, Makagonov System (5.h3) |
| 9. Julio Bolbochan vs O Benkner |
| ½-½ | 41 |
1952 |
Helsinki ol (Men) | E02 Catalan, Open, 5.Qa4 |
| 10. O Benkner vs Morcken |
| 1-0 | 51 |
1952 |
Helsinki ol (Men) | D61 Queen's Gambit Declined, Orthodox, Rubinstein Attack |
| 11. P Levy vs O Benkner |
| 0-1 | 27 |
1952 |
Helsinki ol (Men) | E38 Nimzo-Indian, Classical, 4...c5 |
| 12. O Benkner vs C Doerner |
| 1-0 | 52 |
1952 |
Helsinki ol (Men) | D51 Queen's Gambit Declined |
| 13. O Benkner vs J Penrose |
| 0-1 | 34 |
1952 |
Helsinki ol (Men) | E62 King's Indian, Fianchetto |
| 14. O Benkner vs J C Gonzales |
| ½-½ | 61 |
1952 |
Helsinki ol (Men) | E39 Nimzo-Indian, Classical, Pirc Variation |
| 15. P Ravn vs O Benkner |
| 1-0 | 38 |
1953 |
Paris | E46 Nimzo-Indian |
| 16. O Benkner vs L Schmitt |
| 1-0 | 34 |
1953 |
GER-ch 15th | E00 Queen's Pawn Game |
| 17. O Benkner vs E Paoli |
| 1-0 | 41 |
1954 |
Amsterdam ol (Men) fin-B | A43 Old Benoni |
| 18. O Benkner vs M Cuellar-Gacharna |
| 0-1 | 48 |
1954 |
Amsterdam ol (Men) | A54 Old Indian, Ukrainian Variation, 4.Nf3 |
| 19. O Benkner vs Morcken |
| 1-0 | 24 |
1954 |
Amsterdam ol (Men) | A18 English, Mikenas-Carls |
| 20. A Vestol vs O Benkner |
| ½-½ | 64 |
1954 |
Amsterdam ol (Men) | C86 Ruy Lopez, Worrall Attack |
| 21. Larsen vs O Benkner |
| ½-½ | 46 |
1954 |
Amsterdam ol (Men) pre-III | A04 Reti Opening |
| 22. A Neu vs O Benkner |
| 0-1 | 42 |
1954 |
Amsterdam ol (Men) | A46 Queen's Pawn Game |
| 23. O Benkner vs Jorma Vesterinen |
| ½-½ | 28 |
1954 |
Amsterdam ol (Men) | E09 Catalan, Closed |
| 24. O Benkner vs J Kupper |
| 1-0 | 46 |
1954 |
Amsterdam ol (Men) | A35 English, Symmetrical |
| 25. Larsen vs O Benkner |
 | 0-1 | 93 |
1954 |
Amsterdam ol (Men) fin-B | A04 Reti Opening |