| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. O Aharon vs M Biryukov |
| ½-½ | 43 |
2008 |
Open 18-wycc | B33 Sicilian |
| 2. D Ludwig vs O Aharon |
| 1-0 | 38 |
2008 |
Open 18-wycc | C41 Philidor Defense |
| 3. S Rosberg vs O Aharon |
| 1-0 | 62 |
2008 |
Open 18-wycc | D72 Neo-Grunfeld, 5.cd, Main line |
| 4. O Aharon vs E Schiendorfer |
| 0-1 | 42 |
2008 |
Open 18-wycc | B90 Sicilian, Najdorf |
| 5. O Aharon vs V Rasulov |
| ½-½ | 55 |
2008 |
Open 18-wycc | B40 Sicilian |
| 6. B Posedaru vs O Aharon |
| ½-½ | 47 |
2008 |
Open 18-wycc | D94 Grunfeld |
| 7. C Ponizil vs O Aharon |
| 0-1 | 33 |
2008 |
Open 18-wycc | C41 Philidor Defense |
| 8. O Aharon vs I Stavrianakis |
| ½-½ | 30 |
2009 |
48th World Junior Championship | B90 Sicilian, Najdorf |
| 9. O Aharon vs S M Shyam |
| 0-1 | 52 |
2009 |
48th World Junior Championship | C69 Ruy Lopez, Exchange, Gligoric Variation, 6.d4 |
| 10. E Can vs O Aharon |
| 1-0 | 29 |
2009 |
48th World Junior Championship | B07 Pirc |
| 11. S Guo-Yuthok vs O Aharon |
 | 0-1 | 36 |
2009 |
48th World Junior Championship | A00 Uncommon Opening |
| 12. A Dole vs O Aharon |
| 0-1 | 77 |
2009 |
48th World Junior Championship | C41 Philidor Defense |
| 13. O Aharon vs D Vocaturo |
| 0-1 | 45 |
2009 |
48th World Junior Championship | B76 Sicilian, Dragon, Yugoslav Attack |
| 14. O Aharon vs D C Cadelago |
| 1-0 | 26 |
2009 |
48th World Junior Championship | B01 Scandinavian |
| 15. O Aharon vs L Calderon |
| 1-0 | 28 |
2009 |
48th World Junior Championship | B12 Caro-Kann Defense |
| 16. F Maldonado vs O Aharon |
| 1-0 | 27 |
2009 |
48th World Junior Championship | B07 Pirc |
| 17. O Aharon vs E Postny |
| 0-1 | 52 |
2010 |
Channukah Closed | A13 English |
| 18. O Aharon vs Y Zilberman |
| 1-0 | 64 |
2010 |
Channukah Closed | A13 English |
| 19. O Aharon vs Z Gofshtein |
| ½-½ | 34 |
2010 |
Channukah Closed | A20 English |
| 20. O Aharon vs E Postny |
| 0-1 | 37 |
2010 |
ch-ISR | C55 Two Knights Defense |
| 21. M D Tseitlin vs O Aharon |
| ½-½ | 48 |
2010 |
ch-ISR | B27 Sicilian |
| 22. D Raznikov vs O Aharon |
| 1-0 | 48 |
2012 |
13th European Individual Championship | A42 Modern Defense, Averbakh System |
| 23. D Rogozenko vs O Aharon |
| ½-½ | 29 |
2012 |
13th European Individual Championship | D85 Grunfeld |
| 24. A Indjic vs O Aharon |
| 1-0 | 33 |
2012 |
13th European Individual Championship | A41 Queen's Pawn Game (with ...d6) |
| 25. O Aharon vs N Kabanov |
| 1-0 | 33 |
2012 |
13th European Individual Championship | B06 Robatsch |
