| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. J Berger vs K Pitschel |
 | 1-0 | 26 | 1881 | 2nd DSB Congress, Berlin | C77 Ruy Lopez |
| 2. J Berger vs Wemmers |
| ½-½ | 37 | 1881 | 2nd DSB Congress, Berlin | C77 Ruy Lopez |
| 3. J Berger vs C Leffmann |
| 1-0 | 56 | 1883 | 3rd DSB Congress, Nuremberg | C77 Ruy Lopez |
| 4. J Berger vs M Bier |
| 1-0 | 22 | 1883 | 3rd DSB Congress, Nuremberg | C77 Ruy Lopez |
| 5. J Berger vs J Minckwitz |
| ½-½ | 26 | 1885 | 4th DSB Congress, Hamburg | C77 Ruy Lopez |
| 6. J Berger vs Taubenhaus |
| 0-1 | 74 | 1885 | 4th DSB Congress, Hamburg | C77 Ruy Lopez |
| 7. J Berger vs Englisch |
| ½-½ | 16 | 1885 | 4th DSB Congress, Hamburg | C77 Ruy Lopez |
| 8. J Berger vs von Bardeleben |
| ½-½ | 22 | 1887 | 5th DSB Congress, Frankfurt | C77 Ruy Lopez |
| 9. J Berger vs Schiffers |
| ½-½ | 29 | 1889 | 6th DSB Congress, Breslau | C77 Ruy Lopez |
| 10. J Berger vs Burn |
| ½-½ | 45 | 1889 | 6th DSB Congress, Breslau | C77 Ruy Lopez |
| 11. J Berger vs Tarrasch |
 | 0-1 | 33 | 1894 | 9th DSB Congress, Leipzig | C77 Ruy Lopez |
| 12. J Berger vs H Suechting |
| ½-½ | 16 | 1894 | 9th DSB Congress, Leipzig | C77 Ruy Lopez |
Kibitzing
