| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. G Treppner vs L Christiansen |
| 0-1 | 30 | 1972 | Schilde,jr | A07 King's Indian Attack |
| 2. G Treppner vs S Kalbitzer |
| 0-1 | 20 | 1972 | DSB Team-ch Final | B32 Sicilian |
| 3. G Treppner vs B Saacke |
| ½-½ | 7 | 1978 | Bayern Kongress-49 Meisterturnier 1 | A38 English, Symmetrical |
| 4. G Treppner vs B Jacob |
| ½-½ | 18 | 1978 | West German Championship | D78 Neo-Grunfeld, 6.O-O c6 |
| 5. L Zier vs G Treppner |
| 0-1 | 41 | 1978 | West German Championship | C43 Petrov, Modern Attack |
| 6. P Dankert vs G Treppner |
| ½-½ | 20 | 1978 | West German Championship | B06 Robatsch |
| 7. G Treppner vs S Kindermann |
| ½-½ | 44 | 1978 | West German Championship | A04 Reti Opening |
| 8. Pachman vs G Treppner |
| 1-0 | 24 | 1978 | West German Championship | D94 Grunfeld |
| 9. G Treppner vs L Nikolaiczuk |
| 0-1 | 36 | 1978 | West German Championship | E91 King's Indian |
| 10. R Lau vs G Treppner |
| 1-0 | 58 | 1978 | West German Championship | B06 Robatsch |
| 11. R Sutterer vs G Treppner |
| ½-½ | 24 | 1978 | West German Championship | B06 Robatsch |
| 12. G Treppner vs R Ungnad |
| 0-1 | 50 | 1978 | West German Championship | E94 King's Indian, Orthodox |
| 13. G Treppner vs P Marxen |
| 1-0 | 29 | 1978 | West German Championship | A17 English |
| 14. C Rupp vs G Treppner |
| 1-0 | 42 | 1978 | West German Championship | A00 Uncommon Opening |
| 15. G Treppner vs S Buchal |
| ½-½ | 48 | 1980 | Bundesliga 8081 | A89 Dutch, Leningrad, Main Variation with Nc6 |
| 16. B Saacke vs G Treppner |
| ½-½ | 35 | 1980 | Bayern Kongress-51 Meisterturnier 1 | A41 Queen's Pawn Game (with ...d6) |
| 17. G Treppner vs T Farrand |
| 1-0 | 19 | 1980 | Benedictine Open | A04 Reti Opening |
| 18. G Treppner vs de Firmian |
| 0-1 | 27 | 1980 | Benedictine Open | A30 English, Symmetrical |
| 19. D Cummings vs G Treppner |
| 0-1 | 34 | 1980 | Benedictine Open | A29 English, Four Knights, Kingside Fianchetto |
| 20. G Treppner vs O H Castro Rojas |
| 1-0 | 27 | 1980 | Benedictine Open | A90 Dutch |
| 21. Chandler vs G Treppner |
| 1-0 | 33 | 1980 | Benedictine Open | A41 Queen's Pawn Game (with ...d6) |
| 22. E Schafer vs G Treppner |
| 0-1 | 34 | 1981 | Biel MTO Open | B06 Robatsch |
| 23. G Treppner vs P Vincent |
| 1-0 | 49 | 1981 | Biel MTO Open | A88 Dutch, Leningrad, Main Variation with c6 |
| 24. Hoffmann vs G Treppner |
| 0-1 | 19 | 1981 | Biel MTO Open | C42 Petrov Defense |
| 25. G Treppner vs D E Rumens |
| 1-0 | 47 | 1981 | 5th Lloyds Bank Masters Open | A99 Dutch, Ilyin-Genevsky Variation with b3 |
Kibitzing
