| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. Keene vs J N Sugden |
 | 1-0 | 22 | 1962 | Match | A06 Reti Opening |
| 27. J N Sugden vs Keene |
| 0-1 | 17 | 1962 | Dulwich | B06 Robatsch |
| 28. Keene vs J N Sugden |
| 1-0 | 22 | 1962 | Dulwich | D30 Queen's Gambit Declined |
| 29. Keene vs J N Sugden |
 | 1-0 | 31 | 1962 | Match game 4, Dulwich College | D43 Queen's Gambit Declined Semi-Slav |
| 30. Keene vs J N Sugden |
| 1-0 | 26 | 1962 | Dulwich | A50 Queen's Pawn Game |
| 31. Keene vs J N Sugden |
| 1-0 | 20 | 1962 | Dulwich | B32 Sicilian |
| 32. J N Sugden vs Keene |
| 0-1 | 20 | 1962 | Dulwich College | B32 Sicilian |
| 33. Keene vs J N Sugden |
| 1-0 | 18 | 1962 | Dulwich | B92 Sicilian, Najdorf, Opocensky Variation |
| 34. Keene vs J N Sugden |
| ½-½ | 31 | 1962 | Dulwich College | D10 Queen's Gambit Declined Slav |
| 35. J N Sugden vs Keene |
| 0-1 | 23 | 1962 | Dulwich College | B73 Sicilian, Dragon, Classical |
| 36. Keene vs J N Sugden |
| 1-0 | 42 | 1962 | Dulwich College | D44 Queen's Gambit Declined Semi-Slav |
| 37. J N Sugden vs Keene |
| 0-1 | 25 | 1962 | Dulwich College | C74 Ruy Lopez, Modern Steinitz Defense |
| 38. J N Sugden vs Keene |
| 0-1 | 27 | 1962 | Dulwich | B28 Sicilian, O'Kelly Variation |
| 39. Keene vs J N Sugden |
| 1-0 | 39 | 1962 | Match, Bognor Regis | A00 Uncommon Opening |
| 40. J N Sugden vs Keene |
| 0-1 | 32 | 1962 | Match Dulwich | A43 Old Benoni |
| 41. Keene vs J N Sugden |
| 1-0 | 25 | 1962 | Match Dulwich | B92 Sicilian, Najdorf, Opocensky Variation |
| 42. J N Sugden vs Keene |
| 0-1 | 29 | 1962 | Exhibition game | E00 Queen's Pawn Game |
| 43. J N Sugden vs Keene |
| 0-1 | 21 | 1962 | Dulwich | E89 King's Indian, Samisch, Orthodox Main line |
| 44. J N Sugden vs Keene |
| 0-1 | 40 | 1962 | Match game 1, Beckenham | D50 Queen's Gambit Declined |
| 45. J N Sugden vs Keene |
| 0-1 | 29 | 1962 | 4 game match | E89 King's Indian, Samisch, Orthodox Main line |
| 46. J N Sugden vs Keene |
| 0-1 | 36 | 1962 | Match | B12 Caro-Kann Defense |
| 47. Keene vs J N Sugden |
| 1-0 | 26 | 1963 | Experimental match, game 9 | D00 Queen's Pawn Game |
| 48. J N Sugden vs Keene |
| 1-0 | 32 | 1963 | Thematic Match | A50 Queen's Pawn Game |
| 49. J N Sugden vs Keene |
| ½-½ | 32 | 1963 | London u-16 boys | B32 Sicilian |
| 50. J N Sugden vs Keene |
| 0-1 | 25 | 1963 | Dulwich match | C57 Two Knights |
Kibitzing
