| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. R Cosulich vs K Nickl |
| 1-0 | 36 | 1972 | La Spezia op | C98 Ruy Lopez, Closed, Chigorin |
| 2. K Nickl vs W S Roach |
| 0-1 | 25 | 1979 | AUT-SCO corr | D32 Queen's Gambit Declined, Tarrasch |
| 3. A E Smith vs K Nickl |
| 0-1 | 58 | 1980 | GBR-ch67 Major Open | C97 Ruy Lopez, Closed, Chigorin |
| 4. K Nickl vs Z Varga |
| 1-0 | 23 | 1985 | Laszlo Toth Memorial Open | B06 Robatsch |
| 5. K Nickl vs M Tarmak |
| 1-0 | 21 | 1987 | URS corr | C32 King's Gambit Declined, Falkbeer Counter Gambit |
| 6. C Kamp vs K Nickl |
| 1-0 | 19 | 1987 | Dortmund Open | E76 King's Indian, Four Pawns Attack |
| 7. K Nickl vs D Wolter |
| 0-1 | 55 | 1987 | Dortmund Open | D11 Queen's Gambit Declined Slav |
| 8. T Tolnai vs K Nickl |
| 1-0 | 62 | 1987 | Dortmund Open | C91 Ruy Lopez, Closed |
| 9. F Portisch vs K Nickl |
| 1-0 | 37 | 1987 | Hungarian Open Championship | E61 King's Indian |
| 10. J Nagy vs K Nickl |
| 1-0 | 57 | 1987 | Hungarian Open Championship | C55 Two Knights Defense |
| 11. K Nickl vs I Sokolov |
| 0-1 | 26 | 1987 | Graz Open | D85 Grunfeld |
| 12. K Nickl vs D King |
| 0-1 | 54 | 1987 | Graz Open | E45 Nimzo-Indian, 4.e3, Bronstein (Byrne) Variation |
| 13. W Prueske vs K Nickl |
| 1-0 | 38 | 1988 | Dortmund Open | C29 Vienna Gambit |
| 14. K Nickl vs G Hertneck |
| 1-0 | 41 | 1988 | Dortmund Open | E94 King's Indian, Orthodox |
| 15. F Vergeiner vs K Nickl |
| 1-0 | 24 | 1988 | Lienz op | C36 King's Gambit Accepted, Abbazia Defense |
| 16. K Nickl vs G Horvath |
| ½-½ | 25 | 1988 | St. Ingbert Open | E91 King's Indian |
| 17. K Nickl vs K Bischoff |
| 0-1 | 54 | 1988 | St. Ingbert Open | A15 English |
| 18. R Appel vs K Nickl |
| 1-0 | 33 | 1988 | St. Ingbert Open | E63 King's Indian, Fianchetto, Panno Variation |
| 19. J Kercsmarics vs K Nickl |
| 0-1 | 32 | 1990 | Dortmund Open | C97 Ruy Lopez, Closed, Chigorin |
| 20. E Grivas vs K Nickl |
| 1-0 | 52 | 1990 | Dortmund Open | E71 King's Indian, Makagonov System (5.h3) |
| 21. K Nickl vs V Bukal Sr |
| ½-½ | 21 | 1990 | Dortmund Open | A56 Benoni Defense |
| 22. W Prueske vs K Nickl |
  | 0-1 | 19 | 1990 | Dortmund Open | C29 Vienna Gambit |
| 23. E Berkis vs K Nickl |
| ½-½ | 24 | 1990 | Dortmund Open | C59 Two Knights |
| 24. K Nickl vs Uhlmann |
| 0-1 | 34 | 1990 | Dortmund Open | E98 King's Indian, Orthodox, Taimanov, 9.Ne1 |
| 25. K Nickl vs A Fauland |
| 0-1 | 70 | 1990 | Vienna Open | D35 Queen's Gambit Declined |
Kibitzing
