| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. K Maeder vs E Werner |
| 1-0 | 36 | 1967 | FRG-ch M corr | B09 Pirc, Austrian Attack |
| 2. K Maeder vs Timman |
| 1-0 | 30 | 1967 | Niemeyer Juniors Preliminary | C04 French, Tarrasch, Guimard Main line |
| 3. Karpov vs K Maeder |
  | 1-0 | 31 | 1967 | Niemeyer Juniors Preliminary | A07 King's Indian Attack |
| 4. E M Fucak vs K Maeder |
| 1-0 | 38 | 1967 | Niemeyer Juniors Preliminary | B90 Sicilian, Najdorf |
| 5. K Maeder vs L Tate |
| ½-½ | 41 | 1967 | Niemeyer Juniors Preliminary | C05 French, Tarrasch |
| 6. P Boersma vs K Maeder |
| 1-0 | 38 | 1967 | Niemeyer Juniors Preliminary | A49 King's Indian, Fianchetto without c4 |
| 7. K Maeder vs J Moles |
| 0-1 | 34 | 1967 | Niemeyer Juniors Preliminary | C52 Evans Gambit |
| 8. H Schaufelberger vs K Maeder |
| 0-1 | 22 | 1967 | Niemeyer Juniors Preliminary | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 9. K Maeder vs B Vujacic |
| 1-0 | 33 | 1968 | Niemeyer Juniors Preliminary | B27 Sicilian |
| 10. Ribli vs K Maeder |
| 0-1 | 37 | 1968 | Niemeyer Juniors Preliminary | B93 Sicilian, Najdorf, 6.f4 |
| 11. S Webb vs K Maeder |
| ½-½ | 34 | 1968 | Niemeyer Juniors Preliminary | E99 King's Indian, Orthodox, Taimanov |
| 12. K Maeder vs Vaganian |
| ½-½ | 17 | 1968 | Niemeyer Juniors Preliminary | B04 Alekhine's Defense, Modern |
| 13. P Atanasov vs K Maeder |
| ½-½ | 16 | 1968 | Niemeyer Juniors Preliminary | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 14. K Maeder vs Andersson |
| ½-½ | 8 | 1968 | Niemeyer Juniors Preliminary | B60 Sicilian, Richter-Rauzer |
| 15. E Turunen vs K Maeder |
| ½-½ | 35 | 1968 | Niemeyer Juniors Preliminary | E63 King's Indian, Fianchetto, Panno Variation |
| 16. K Maeder vs D Ghizdavu |
| 1-0 | 57 | 1969 | Niemeyer Juniors | B09 Pirc, Austrian Attack |
| 17. K Maeder vs Ribli |
| 1-0 | 29 | 1969 | Niemeyer Juniors | B32 Sicilian |
| 18. Vaganian vs K Maeder |
| 0-1 | 62 | 1969 | Niemeyer Juniors | E63 King's Indian, Fianchetto, Panno Variation |
| 19. K Maeder vs H Schaufelberger |
| 1-0 | 57 | 1969 | Niemeyer Juniors | C43 Petrov, Modern Attack |
| 20. E Turunen vs K Maeder |
| 1-0 | 34 | 1969 | Niemeyer Juniors | B90 Sicilian, Najdorf |
| 21. K Maeder vs Andersson |
| 1-0 | 38 | 1969 | Niemeyer Juniors | C45 Scotch Game |
| 22. S Webb vs K Maeder |
| 1-0 | 41 | 1969 | Niemeyer Juniors | A05 Reti Opening |
| 23. K Maeder vs A Lombard |
| 1-0 | 30 | 1969 | Niemeyer Juniors | B83 Sicilian |
| 24. P Atanasov vs K Maeder |
| 0-1 | 40 | 1969 | Niemeyer Juniors | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 25. K Maeder vs Timman |
| 1-0 | 31 | 1969 | FRG-NED | B04 Alekhine's Defense, Modern |
Kibitzing
