| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. K H Maeder vs C Zuidema |
| ½-½ | 30 |
1969 |
Amsterdam | C52 Evans Gambit |
| 2. Ujtelky vs K H Maeder |
| ½-½ | 41 |
1969 |
IBM-B | A15 English |
| 3. K H Maeder vs Joop Piket |
| ½-½ | 13 |
1970 |
Wijk aan Zee | B61 Sicilian, Richter-Rauzer, Larsen Variation, 7.Qd2 |
| 4. K H Maeder vs Ulf Andersson |
 | ½-½ | 10 |
1970 |
Wijk aan Zee | B45 Sicilian, Taimanov |
| 5. G Antunac vs K H Maeder |
| ½-½ | 48 |
1970 |
Wijk aan Zee | B93 Sicilian, Najdorf, 6.f4 |
| 6. K H Maeder vs Kauranen |
| ½-½ | 80 |
1978 |
corr-10 WCH | B33 Sicilian |
| 7. J Kalish vs K H Maeder |
| ½-½ | 70 |
1978 |
corr-10 WCH | B92 Sicilian, Najdorf, Opocensky Variation |
| 8. M Kletsel vs K H Maeder |
| ½-½ | 45 |
1978 |
corr-10 WCH | B92 Sicilian, Najdorf, Opocensky Variation |
| 9. V Palciauskas vs K H Maeder |
| ½-½ | 18 |
1978 |
corr-10 WCH | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 10. K H Maeder vs M Govbinder |
| ½-½ | 34 |
1978 |
corr-10 WCH | B97 Sicilian, Najdorf |
| 11. K H Maeder vs V Palciauskas |
| ½-½ | 45 |
1984 |
W-ch12 corr8490 | C92 Ruy Lopez, Closed |
| 12. K H Maeder vs V Beim |
| ½-½ | 41 |
1990 |
Biel MTO op | B09 Pirc, Austrian Attack |