| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. J Dimer vs R H Barnes |
| 0-1 | 41 | 1896 | 10th DSB Congress, Eisenach | C43 Petrov, Modern Attack |
| 2. J F Heemskerk vs J Dimer |
| 0-1 | 44 | 1899 | 27th DCA Congress, Amsterdam | B45 Sicilian, Taimanov |
| 3. J Dimer vs H Atkins |
 | 0-1 | 21 | 1899 | 27th DCA Congress, Amsterdam | C55 Two Knights Defense |
| 4. J Dimer vs Olland |
| 0-1 | 48 | 1899 | 27th DCA Congress, Amsterdam | C28 Vienna Game |
| 5. W Schwan vs J Dimer |
| 0-1 | 47 | 1899 | 27th DCA Congress, Amsterdam | A02 Bird's Opening |
| 6. W Meiners vs J Dimer |
| 0-1 | 41 | 1899 | 27th DCA Congress, Amsterdam | C63 Ruy Lopez, Schliemann Defense |
| 7. J Dimer vs A van Foreest |
| 0-1 | 26 | 1899 | 27th DCA Congress, Amsterdam | C55 Two Knights Defense |
| 8. F W Pelzer vs J Dimer |
| 0-1 | 48 | 1899 | 27th DCA Congress, Amsterdam | C80 Ruy Lopez, Open |
| 9. Lasker vs J Dimer |
| 0-1 | 17 | 1904 | Simul, 31b | B45 Sicilian, Taimanov |
| 10. Teichmann / Chigorin / Dimer vs Lasker / Bier / Metger |
| 0-1 | 32 | 1904 | Consultation game | C33 King's Gambit Accepted |
| 11. C Jensen vs J Dimer |
| 0-1 | 26 | 1912 | Robinow Cup | D40 Queen's Gambit Declined, Semi-Tarrasch |
| 12. J Dimer vs B Studt |
| 0-1 | 57 | 1913 | Hamburg | C29 Vienna Gambit |
| 13. J Dimer vs C Carls |
| 0-1 | 25 | 1919 | Luebeck | B16 Caro-Kann, Bronstein-Larsen Variation |
Kibitzing
