| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. M Mitchell vs J Dempsey |
 | 1-0 | 18 | 2004 | Hawick op | A40 Queen's Pawn Game |
| 2. J Dempsey vs N Berry |
| 0-1 | 32 | 2004 | Hawick op | C00 French Defense |
| 3. J Dempsey vs S Irwanto |
| 0-1 | 30 | 2016 | Baku Olympiad | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 4. E Soares vs J Dempsey |
| 1-0 | 37 | 2016 | Baku Olympiad | E69 King's Indian, Fianchetto, Classical Main line |
| 5. J Dempsey vs Bhupendra Niraula |
| 0-1 | 29 | 2016 | Baku Olympiad | A07 King's Indian Attack |
| 6. Hamid Musallem Hardan vs J Dempsey |
| 0-1 | 36 | 2016 | Baku Olympiad | B27 Sicilian |
| 7. D Jelic vs J Dempsey |
| 1-0 | 31 | 2016 | Baku Olympiad | A42 Modern Defense, Averbakh System |
| 8. J Dempsey vs Andrew Hale |
| ½-½ | 31 | 2016 | Baku Olympiad | B06 Robatsch |
| 9. M A Goumaneh vs J Dempsey |
 | 0-1 | 51 | 2016 | Baku Olympiad | B27 Sicilian |
| 10. E Grassi vs J Dempsey |
| ½-½ | 44 | 2016 | Baku Olympiad | B21 Sicilian, 2.f4 and 2.d4 |
| 11. G B Esungi vs J Dempsey |
| 0-1 | 38 | 2016 | Baku Olympiad | E94 King's Indian, Orthodox |
| 12. J Dempsey vs Jn Claude Pierre |
| 0-1 | 45 | 2016 | Baku Olympiad | B50 Sicilian |
| 13. J Dempsey vs D Coleman |
| 1-0 | 37 | 2017 | Hastings 2017/18 | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 14. A Byron vs J Dempsey |
| 1-0 | 33 | 2017 | Hastings 2017/18 | B27 Sicilian |
| 15. J N Sugden vs J Dempsey |
| 1-0 | 36 | 2017 | Hastings 2017/18 | A07 King's Indian Attack |
| 16. J Dempsey vs H Witt |
| 0-1 | 7 | 2017 | Hastings 2017/18 | C02 French, Advance |
| 17. J Dempsey vs S Lochte |
| ½-½ | 27 | 2018 | Hastings 2017/18 | A07 King's Indian Attack |
| 18. K Lalla vs J Dempsey |
| ½-½ | 12 | 2018 | Hastings 2017/18 | A04 Reti Opening |
| 19. Vianney Archeveq Koualet-Bebondi vs J Dempsey |
| 0-1 | 62 | 2018 | Batumi Olympiad | A45 Queen's Pawn Game |
| 20. J Dempsey vs A Onkoud |
| 0-1 | 55 | 2018 | Batumi Olympiad | B00 Uncommon King's Pawn Opening |
| 21. C Sreeves vs J Dempsey |
| 1-0 | 37 | 2018 | Batumi Olympiad | B27 Sicilian |
| 22. J Dempsey vs Y K Pang |
| 0-1 | 27 | 2018 | Batumi Olympiad | C00 French Defense |
| 23. Khalaf Al Azmi vs J Dempsey |
| ½-½ | 44 | 2018 | Batumi Olympiad | B27 Sicilian |
| 24. J Dempsey vs Mohamud Hussein Ali |
| 0-1 | 38 | 2018 | Batumi Olympiad | D02 Queen's Pawn Game |
| 25. A Stratonowitsch vs J Dempsey |
| 1-0 | 38 | 2018 | Batumi Olympiad | C10 French |
Kibitzing
