| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. K H Maeder vs J Moles |
| 0-1 | 34 |
1967 |
EU-ch U18 sf 6768 | C52 Evans Gambit |
| 2. Ribli vs K H Maeder |
| 0-1 | 37 |
1969 |
Groningen | B93 Sicilian, Najdorf, 6.f4 |
| 3. K H Maeder vs E Scholl |
| 0-1 | 33 |
1969 |
Amsterdam (Netherlands) | C45 Scotch Game |
| 4. G Sanakoev vs K H Maeder |
 | 0-1 | 64 |
1978 |
corr-10 WCH | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 5. H Sorensen vs K H Maeder |
| 0-1 | 26 |
1978 |
corr-10 WCH | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 6. K H Maeder vs K B Richardson |
| 0-1 | 24 |
1978 |
corr-10 WCH | B09 Pirc, Austrian Attack |
| 7. J Svenningsson vs K H Maeder |
| 0-1 | 34 |
1978 |
corr-10 WCH | E77 King's Indian |
| 8. W Seeliger vs K H Maeder |
| 0-1 | 26 |
1978 |
corr-10 WCH | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 9. K H Maeder vs J S Morgado |
| 0-1 | 43 |
1978 |
corr-10 WCH | C43 Petrov, Modern Attack |
| 10. K H Maeder vs J Boey |
| 0-1 | 47 |
1978 |
corr-10 WCH | C63 Ruy Lopez, Schliemann Defense |
| 11. K H Maeder vs Adorjan |
| 0-1 | 21 |
1990 |
Biel (Switzerland) | B83 Sicilian |
