| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. E A Apps vs R Schlenker |
 | 0-1 | 24 | 1974 | corr | A10 English |
| 2. R Schlenker vs B Jansson |
| 0-1 | 22 | 1976 | Rilton Cup-06 /77 | A04 Reti Opening |
| 3. B Rueegsegger vs R Schlenker |
| 0-1 | 33 | 1977 | Rilton Cup-06 1976/77 | C02 French, Advance |
| 4. R Schlenker vs Dubois |
| 1-0 | 22 | 1977 | Lugano Open-02 | A01 Nimzovich-Larsen Attack |
| 5. E Straat vs R Schlenker |
| 1-0 | 41 | 1977 | Dutch Open | A99 Dutch, Ilyin-Genevsky Variation with b3 |
| 6. R Schlenker vs G D Hillyard |
| ½-½ | 26 | 1977 | Hastings Challengers 1977/78 | A02 Bird's Opening |
| 7. B Soos vs R Schlenker |
| ½-½ | 41 | 1978 | Strasbourg Open | A40 Queen's Pawn Game |
| 8. R Schlenker vs J Jasak |
| 1-0 | 13 | 1978 | ICCF-Cup corr | C30 King's Gambit Declined |
| 9. I Nemet vs R Schlenker |
| 1-0 | 41 | 1978 | Dutch Open | E97 King's Indian |
| 10. R Schlenker vs S Zrinscak |
| 1-0 | 43 | 1979 | Heidelberg | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 11. R Schlenker vs V Raicevic |
| 1-0 | 78 | 1980 | Linz | A07 King's Indian Attack |
| 12. R Schlenker vs W Stamer |
 | 0-1 | 8 | 1980 | Tubingen | A00 Uncommon Opening |
| 13. A Brandhorst vs R Schlenker |
| 0-1 | 21 | 1980 | Berlin op | A42 Modern Defense, Averbakh System |
| 14. R Schlenker vs R Lau |
| 0-1 | 34 | 1980 | Berlin op | A07 King's Indian Attack |
| 15. R Schlenker vs T Glatthor |
| 1-0 | 29 | 1980 | Berlin op | B09 Pirc, Austrian Attack |
| 16. R Schlenker vs W Koch |
| 1-0 | 31 | 1980 | Berlin op | C38 King's Gambit Accepted |
| 17. G Biebinger vs R Schlenker |
| 1-0 | 32 | 1981 | Strasbourg open | A42 Modern Defense, Averbakh System |
| 18. Gheorghiu vs R Schlenker |
| 1-0 | 28 | 1981 | 5th Lloyds Bank Masters Open | A40 Queen's Pawn Game |
| 19. Y Kraidman vs R Schlenker |
| 1-0 | 51 | 1981 | 5th Lloyds Bank Masters Open | A42 Modern Defense, Averbakh System |
| 20. G Botterill vs R Schlenker |
| 1-0 | 39 | 1981 | 5th Lloyds Bank Masters Open | B06 Robatsch |
| 21. M Pellisseri vs R Schlenker |
| 0-1 | 11 | 1982 | Bordeaux op | B06 Robatsch |
| 22. B Ivanovic vs R Schlenker |
| 1-0 | 24 | 1983 | Metz op 1st | B06 Robatsch |
| 23. Knobloch vs R Schlenker |
| 1-0 | 8 | 1983 | FRG | A10 English |
| 24. Nigon vs R Schlenker |
| 0-1 | 39 | 1983 | Metz Open-01 | A42 Modern Defense, Averbakh System |
| 25. K Pytel vs R Schlenker |
| 1-0 | 41 | 1983 | Metz Open-01 | A42 Modern Defense, Averbakh System |
Kibitzing
