| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. J N Sugden vs Keene |
 | 0-1 | 25 | 1963 | Dulwich match | C57 Two Knights |
| 52. Keene vs J N Sugden |
| ½-½ | 17 | 1963 | House match, Dulwich College | B90 Sicilian, Najdorf |
| 53. N J Kalton vs J N Sugden |
| 1-0 | 24 | 1964 | School match | E93 King's Indian, Petrosian System |
| 54. Dutch vs J N Sugden |
 | 0-1 | 11 | 1964 | Mushrooms-Coulsdon & Purley | B21 Sicilian, 2.f4 and 2.d4 |
| 55. Keene vs J N Sugden |
| ½-½ | 44 | 1964 | Dulwich College Champs | E25 Nimzo-Indian, Samisch |
| 56. J N Sugden vs Keene |
 | 1-0 | 46 | 1964 | Surrey Juniors v Kent bd 1 | B39 Sicilian, Accelerated Fianchetto, Breyer Variation |
| 57. J N Sugden vs Keene |
| 0-1 | 14 | 1965 | Metropolitan Junior Jamboree bd1 | A61 Benoni |
| 58. C Pritchett vs J N Sugden |
| 1-0 | 43 | 1966 | Glorney Cup | A03 Bird's Opening |
| 59. J N Sugden vs Keene |
| 0-1 | 19 | 1967 | Kent League | D97 Grunfeld, Russian |
| 60. J N Sugden vs P C Griffiths |
| 0-1 | 35 | 1967 | BCF-ch Major op | E00 Queen's Pawn Game |
| 61. J N Sugden vs J M Ripley |
| 0-1 | 22 | 1967 | BCF-ch Major op | D70 Neo-Grunfeld Defense |
| 62. J N Sugden vs B H Wood |
| 0-1 | 25 | 1967 | BCF-ch Major op | A62 Benoni, Fianchetto Variation |
| 63. J Harouni vs J N Sugden |
| 0-1 | 20 | 1968 | Oxford-Cambridge m | E76 King's Indian, Four Pawns Attack |
| 64. J N Sugden vs Keene |
| 0-1 | 32 | 1968 | College match, Cambridge | A20 English |
| 65. B Eley vs J N Sugden |
| 0-1 | 54 | 1969 | BCF-ch op | B94 Sicilian, Najdorf |
| 66. J N Sugden vs B Cafferty |
| ½-½ | 15 | 1969 | Churchill Memorial Open | E24 Nimzo-Indian, Samisch |
| 67. A H Perkins vs J N Sugden |
| ½-½ | 42 | 1971 | British Championship | E83 King's Indian, Samisch |
| 68. J N Sugden vs Keene |
| 0-1 | 29 | 1971 | British Championship | A40 Queen's Pawn Game |
| 69. L P Burnett vs J N Sugden |
| ½-½ | 31 | 1971 | British Championship | A10 English |
| 70. J N Sugden vs M J Franklin |
| 0-1 | 47 | 1971 | British Championship | E24 Nimzo-Indian, Samisch |
| 71. L De Veauce vs J N Sugden |
| 1-0 | 43 | 1971 | British Championship | A46 Queen's Pawn Game |
| 72. J N Sugden vs A Trangmar |
| ½-½ | 25 | 1971 | British Championship | A56 Benoni Defense |
| 73. W A Linton vs J N Sugden |
| 1-0 | 26 | 1971 | British Championship | B43 Sicilian, Kan, 5.Nc3 |
| 74. J N Sugden vs N J Kalton |
| ½-½ | 23 | 1971 | British Championship | D47 Queen's Gambit Declined Semi-Slav |
| 75. D M Wise vs J N Sugden |
| 1-0 | 32 | 1971 | British Championship | B93 Sicilian, Najdorf, 6.f4 |
Kibitzing
