| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. H E Atkins vs J Barry |
| 1-0 | 64 |
1907 |
ENG-USA cable match | C14 French, Classical |
| 27. H E Atkins vs Blackburne |
 | 1-0 | 23 |
1909 |
Scarborough | C10 French |
| 28. G Wainwright vs H E Atkins |
| 0-1 | 45 |
1910 |
Oxford | C92 Ruy Lopez, Closed |
| 29. J Blake vs H E Atkins |
 | 0-1 | 16 |
1910 |
Bradford (m/2) | C29 Vienna Gambit |
| 30. H E Atkins vs R Scott |
| 0-1 | 47 |
1920 |
Hastings 2021 | C42 Petrov Defense |
| 31. H E Atkins vs Yates |
| ½-½ | 37 |
1920 |
Hastings 2021 | C79 Ruy Lopez, Steinitz Defense Deferred |
| 32. R Scott vs H E Atkins |
| ½-½ | 42 |
1920 |
Hastings 2021 | D32 Queen's Gambit Declined, Tarrasch |
| 33. Yates vs H E Atkins |
| ½-½ | 28 |
1920 |
Hastings 2021 | C82 Ruy Lopez, Open |
| 34. Yates vs H E Atkins |
  | 1-0 | 21 |
1922 |
London | B40 Sicilian |
| 35. H E Atkins vs Vidmar |
 | ½-½ | 43 |
1922 |
London | C66 Ruy Lopez |
| 36. H E Atkins vs Rubinstein |
 | 1-0 | 35 |
1922 |
London | D60 Queen's Gambit Declined, Orthodox Defense |
| 37. Bogoljubov vs H E Atkins |
 | 1-0 | 43 |
1922 |
London (England) | A53 Old Indian |
| 38. H E Atkins vs Capablanca |
  | 0-1 | 67 |
1922 |
London | B12 Caro-Kann Defense |
| 39. D Marotti vs H E Atkins |
 | 0-1 | 29 |
1922 |
London | B29 Sicilian, Nimzovich-Rubinstein |
| 40. Wahltuch vs H E Atkins |
  | ½-½ | 25 |
1922 |
London | A46 Queen's Pawn Game |
| 41. Tartakower vs H E Atkins |
 | 0-1 | 42 |
1922 |
London | C55 Two Knights Defense |
| 42. H E Atkins vs J S Morrison |
 | ½-½ | 48 |
1922 |
London | E10 Queen's Pawn Game |
| 43. H E Atkins vs Alekhine |
  | 0-1 | 57 |
1922 |
London (05) | E12 Queen's Indian |
| 44. Reti vs H E Atkins |
| 1-0 | 45 |
1922 |
London | D64 Queen's Gambit Declined, Orthodox, Rubinstein Attack |
| 45. H E Atkins vs C Watson |
  | 0-1 | 42 |
1922 |
London | E12 Queen's Indian |
| 46. H E Atkins vs Euwe |
| 0-1 | 39 |
1922 |
London ;HCL 22 | A48 King's Indian |
| 47. H E Atkins vs Maroczy |
 | ½-½ | 59 |
1922 |
London | D05 Queen's Pawn Game |
| 48. Znosko-Borovsky vs H E Atkins |
| 0-1 | 85 |
1922 |
London | B34 Sicilian, Accelerated Fianchetto |
| 49. H E Atkins vs W Gibson |
 | 1-0 | 17 |
1924 |
**Rd--()-, Southport | C83 Ruy Lopez, Open |
| 50. H E Atkins vs B Rasmusson |
| ½-½ | 18 |
1927 |
1st olm final | E12 Queen's Indian |