| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 451. Smyslov vs C Kottnauer |
 | 1-0 | 24 | 1969 | Hastings 1968/69 | A15 English |
| 452. C Kottnauer vs M Fuller |
| 1-0 | 28 | 1969 | Hastings 1968/69 | A00 Uncommon Opening |
| 453. P H Clarke vs C Kottnauer |
| ½-½ | 13 | 1969 | Hastings 1968/69 | A07 King's Indian Attack |
| 454. J Burstow vs C Kottnauer |
| 1-0 | 48 | 1970 | Islington Open | B93 Sicilian, Najdorf, 6.f4 |
| 455. C Kottnauer vs W A Linton |
| 1-0 | 21 | 1970 | Islington Open | E93 King's Indian, Petrosian System |
| 456. C Kottnauer vs Milner-Barry |
| 1-0 | 23 | 1974 | London | A15 English |
Kibitzing
