| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. G Thomas vs Alekhine |
 | ½-½ | 32 | 1932 | London | C73 Ruy Lopez, Modern Steinitz Defense |
| 2. G Thomas vs K Treybal |
| 0-1 | 60 | 1933 | Folkestone Olympiad | C73 Ruy Lopez, Modern Steinitz Defense |
| 3. G Thomas vs M Monticelli |
| 1-0 | 27 | 1933 | Folkestone Olympiad | C73 Ruy Lopez, Modern Steinitz Defense |
| 4. G Thomas vs A Vajda |
| 0-1 | 47 | 1933 | Folkestone Olympiad | C73 Ruy Lopez, Modern Steinitz Defense |
| 5. G Thomas vs Capablanca |
  | 0-1 | 37 | 1936 | Nottingham | C73 Ruy Lopez, Modern Steinitz Defense |
| 6. G Thomas vs Koltanowski |
| ½-½ | 23 | 1937 | Hastings 1936/37 | C73 Ruy Lopez, Modern Steinitz Defense |
| 7. G Thomas vs Fine |
| ½-½ | 35 | 1937 | Margate | C73 Ruy Lopez, Modern Steinitz Defense |
| 8. G Thomas vs W Fairhurst |
| 1-0 | 37 | 1947 | British Championship | C73 Ruy Lopez, Modern Steinitz Defense |
| 9. G Thomas vs R Broadbent |
| ½-½ | 62 | 1947 | British Championship | C73 Ruy Lopez, Modern Steinitz Defense |
| 10. G Thomas vs M Raizman |
| 1-0 | 33 | 1948 | Hastings 1947/48 | C73 Ruy Lopez, Modern Steinitz Defense |
| 11. G Thomas vs W Fairhurst |
| 0-1 | 31 | 1949 | Hastings 1948/49 | C73 Ruy Lopez, Modern Steinitz Defense |
Kibitzing
