| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 101. G Thomas vs J M Aitken |
| ½-½ | 27 | 1949 | Southsea | C86 Ruy Lopez, Worrall Attack |
| 102. J M Aitken vs P Wallis |
 | 1-0 | 43 | 1949 | Southsea | C18 French, Winawer |
| 103. G J Wood vs J M Aitken |
| ½-½ | 31 | 1949 | Southsea | D41 Queen's Gambit Declined, Semi-Tarrasch |
| 104. J M Aitken vs Rossolimo |
| 0-1 | 45 | 1949 | Southsea | B59 Sicilian, Boleslavsky Variation, 7.Nb3 |
| 105. Tartakower vs J M Aitken |
| 0-1 | 65 | 1949 | Southsea | B70 Sicilian, Dragon Variation |
| 106. F Alexander vs J M Aitken |
| 0-1 | 24 | 1949 | Southsea | D32 Queen's Gambit Declined, Tarrasch |
| 107. J M Aitken vs O Friedman |
| 1-0 | 28 | 1949 | Southsea | B74 Sicilian, Dragon, Classical |
| 108. J M Aitken vs O Penrose |
| 1-0 | 49 | 1949 | British Championship | C71 Ruy Lopez |
| 109. W Fairhurst vs J M Aitken |
| ½-½ | 36 | 1949 | British Championship | D51 Queen's Gambit Declined |
| 110. J M Aitken vs G Thomas |
| ½-½ | 24 | 1949 | British Championship | C71 Ruy Lopez |
| 111. E G Sergeant vs J M Aitken |
| ½-½ | 40 | 1949 | British Championship | B73 Sicilian, Dragon, Classical |
| 112. J M Aitken vs C Hunter |
| 1-0 | 11 | 1949 | British Championship | C70 Ruy Lopez |
| 113. J M Aitken vs D V Hooper |
| 0-1 | 30 | 1949 | British Championship | C43 Petrov, Modern Attack |
| 114. L Barden vs J M Aitken |
| 1-0 | 50 | 1949 | British Championship | C99 Ruy Lopez, Closed, Chigorin, 12...cd |
| 115. O Friedman vs J M Aitken |
| ½-½ | 56 | 1949 | British Championship | D52 Queen's Gambit Declined |
| 116. J M Aitken vs J Stone |
| ½-½ | 29 | 1949 | British Championship | C41 Philidor Defense |
| 117. F Parr vs J M Aitken |
| 1-0 | 60 | 1949 | British Championship | E01 Catalan, Closed |
| 118. J M Aitken vs L Derby |
| ½-½ | 27 | 1949 | British Championship | C18 French, Winawer |
| 119. J M Aitken vs J Penrose |
| 0-1 | 57 | 1950 | Ilford | C81 Ruy Lopez, Open, Howell Attack |
| 120. J M Aitken vs J Penrose |
| ½-½ | 32 | 1950 | ENG Club-ch | C92 Ruy Lopez, Closed |
| 121. Ralph Frederick G Wright vs J M Aitken |
| 0-1 | 37 | 1950 | Southsea | D52 Queen's Gambit Declined |
| 122. J M Aitken vs Golombek |
| ½-½ | 45 | 1950 | Southsea | B13 Caro-Kann, Exchange |
| 123. J M Aitken vs Tartakower |
| 0-1 | 55 | 1950 | Southsea | B90 Sicilian, Najdorf |
| 124. J M Aitken vs J Poole |
| 1-0 | 39 | 1950 | Southsea | B13 Caro-Kann, Exchange |
| 125. L Schmid vs J M Aitken |
| 1-0 | 37 | 1950 | Southsea | C75 Ruy Lopez, Modern Steinitz Defense |
Kibitzing
