| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Fahrni vs D Bleijkmans |
| 1-0 | 64 |
1902 |
DSB-13.Kongress Hauptturnier A | C85 Ruy Lopez, Exchange Variation Doubly Deferred (DERLD) |
| 2. M Elyashov vs Fahrni |
| 0-1 | 51 |
1904 |
DSB-14.Kongress Hauptturnier B | D00 Queen's Pawn Game |
| 3. Fahrni vs H Appunn |
| 1-0 | 39 |
1904 |
DSB-14.Kongress Hauptturnier B | D55 Queen's Gambit Declined |
| 4. Fahrni vs B Leussen |
| 1-0 | 69 |
1905 |
Barmen Meisterturnier B | D37 Queen's Gambit Declined |
| 5. Fahrni vs Spielmann |
 | 1-0 | 27 |
1905 |
Barmen Meisterturnier B | D02 Queen's Pawn Game |
| 6. Fahrni vs A E Post |
| 1-0 | 20 |
1905 |
Barmen Meisterturnier B | D02 Queen's Pawn Game |
| 7. Fahrni vs H Caro |
| 1-0 | 49 |
1905 |
Barmen Meisterturnier B | D02 Queen's Pawn Game |
| 8. Nimzowitsch vs Fahrni |
| 0-1 | 36 |
1905 |
Barmen Meisterturnier B | B22 Sicilian, Alapin |
| 9. I Kopa vs Fahrni |
| 0-1 | 56 |
1905 |
Barmen Meisterturnier B | C45 Scotch Game |
| 10. Fahrni vs J W Baird |
| 1-0 | 50 |
1905 |
Barmen Meisterturnier B | D37 Queen's Gambit Declined |
| 11. Fahrni vs A H Pettersson |
| 1-0 | 35 |
1905 |
Barmen Meisterturnier B | C84 Ruy Lopez, Closed |
| 12. Fahrni vs Leonhardt |
| 1-0 | 47 |
1906 |
15th DSB Kongress (Nuremberg) | D30 Queen's Gambit Declined |
| 13. J N Berger vs Fahrni |
| 0-1 | 30 |
1906 |
DSB-15.Kongress+ | B13 Caro-Kann, Exchange |
| 14. Tarrasch vs Fahrni |
| 0-1 | 43 |
1906 |
15th DSB Kongress (Nuremberg) | C45 Scotch Game |
| 15. Swiderski vs Fahrni |
| 0-1 | 57 |
1906 |
15th DSB Kongress (Nuremberg) | A35 English, Symmetrical |
| 16. Fahrni vs Janowski |
| 1-0 | 62 |
1906 |
15th DSB Kongress (Nuremberg) | C68 Ruy Lopez, Exchange |
| 17. O Bernstein vs Fahrni |
| 0-1 | 42 |
1906 |
Ostend | C65 Ruy Lopez, Berlin Defense |
| 18. O Chajes vs Fahrni |
| 0-1 | 64 |
1911 |
Karlsbad | A40 Queen's Pawn Game |
| 19. Przepiorka vs Fahrni |
| 0-1 | 28 |
1911 |
San Remo ITA | D05 Queen's Pawn Game |
| 20. P F Johner vs Fahrni |
| 0-1 | 29 |
1911 |
Karlsbad | C14 French, Classical |
| 21. Reti vs Fahrni |
| 0-1 | 24 |
1911 |
San Remo | C01 French, Exchange |
| 22. Fahrni vs B Kostic |
| 1-0 | 37 |
1911 |
Karlsbad | C83 Ruy Lopez, Open |
| 23. Fahrni vs Burn |
| 1-0 | 66 |
1911 |
Karlsbad | C68 Ruy Lopez, Exchange |
| 24. Dus Chotimirsky vs Fahrni |
| 0-1 | 75 |
1911 |
Karlsbad | D46 Queen's Gambit Declined Semi-Slav |
| 25. Tartakower vs Fahrni |
| 0-1 | 50 |
1911 |
Karlsbad | A00 Uncommon Opening |
