| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. E Perez Gosalbes vs C Clemens |
| 1-0 | 31 | 1961 | European Team Championship | A46 Queen's Pawn Game |
| 27. C Clemens vs Furman |
| ½-½ | 20 | 1961 | European Team Championship | A37 English, Symmetrical |
| 28. C Clemens vs D Hottes |
| ½-½ | 72 | 1961 | FRG-ch 06th | A15 English |
| 29. W Bialas vs C Clemens |
| ½-½ | 21 | 1961 | FRG-ch 06th | B89 Sicilian |
| 30. C Clemens vs K Darga |
 | 0-1 | 28 | 1961 | FRG-ch 06th | C46 Three Knights |
| 31. D Hottes vs C Clemens |
| 1-0 | 37 | 1962 | Bamberg IT | A21 English |
| 32. C Clemens vs D Hottes |
| 1-0 | 30 | 1963 | Helmbrechts op | A89 Dutch, Leningrad, Main Variation with Nc6 |
| 33. C Clemens vs A Prameshuber |
| ½-½ | 37 | 1963 | Europe-chT qual | E08 Catalan, Closed |
| 34. A Prameshuber vs C Clemens |
| 1-0 | 38 | 1963 | Europe-chT qual | E11 Bogo-Indian Defense |
| 35. C Clemens vs H Lohsse |
| 1-0 | 38 | 1963 | West German Championship | D78 Neo-Grunfeld, 6.O-O c6 |
| 36. C Clemens vs A Kohl |
| 1-0 | 41 | 1963 | West German Championship | C07 French, Tarrasch |
| 37. W Bialas vs C Clemens |
| ½-½ | 34 | 1963 | West German Championship | C70 Ruy Lopez |
| 38. C Clemens vs J Hinne |
| ½-½ | 34 | 1963 | West German Championship | D02 Queen's Pawn Game |
| 39. M Gerusel vs C Clemens |
| 1-0 | 30 | 1963 | West German Championship | A88 Dutch, Leningrad, Main Variation with c6 |
| 40. C Clemens vs H Hecht |
| 0-1 | 34 | 1963 | West German Championship | A38 English, Symmetrical |
| 41. K Bachmann vs C Clemens |
| ½-½ | 40 | 1963 | West German Championship | C70 Ruy Lopez |
| 42. C Clemens vs H Besser |
| 0-1 | 25 | 1963 | West German Championship | A54 Old Indian, Ukrainian Variation, 4.Nf3 |
| 43. D Mohrlok vs C Clemens |
 | 0-1 | 41 | 1963 | West German Championship | B86 Sicilian, Fischer-Sozin Attack |
| 44. C Clemens vs H Pfleger |
| 0-1 | 72 | 1963 | West German Championship | A04 Reti Opening |
| 45. M Eisinger vs C Clemens |
| ½-½ | 40 | 1963 | West German Championship | B46 Sicilian, Taimanov Variation |
| 46. C Clemens vs S Wolk |
| 0-1 | 41 | 1963 | West German Championship | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 47. P Troeger vs C Clemens |
| 1-0 | 56 | 1963 | West German Championship | D16 Queen's Gambit Declined Slav |
| 48. C Clemens vs Unzicker |
| ½-½ | 46 | 1963 | West German Championship | D78 Neo-Grunfeld, 6.O-O c6 |
| 49. P Ellrich vs C Clemens |
| 1-0 | 35 | 1963 | West German Championship | C70 Ruy Lopez |
| 50. C Clemens vs C Vlagsma |
| 0-1 | 40 | 1964 | Detmold | A92 Dutch |
Kibitzing
