| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. H Strick van Linschoten vs J Davidson |
 | 0-1 | 13 |
1923 |
Scheveningen NED | C47 Four Knights |
| 27. J Davidson vs Znosko-Borovsky |
| 0-1 | 56 |
1923 |
Scheveningen it | D66 Queen's Gambit Declined, Orthodox Defense, Bd3 line |
| 28. Reti vs J Davidson |
 | 1-0 | 35 |
1923 |
Scheveningen NED | A07 King's Indian Attack |
| 29. Euwe vs J Davidson |
| 1-0 | 38 |
1924 |
Amsterdam | A13 English |
| 30. J Davidson vs Euwe |
| 0-1 | 56 |
1924 |
Match | E60 King's Indian Defense |
| 31. J Davidson vs Euwe |
| 0-1 | 26 |
1924 |
Match | D67 Queen's Gambit Declined, Orthodox Defense, Bd3 line |
| 32. Euwe vs J Davidson |
| ½-½ | 55 |
1924 |
Match | D63 Queen's Gambit Declined, Orthodox Defense |
| 33. Euwe vs J Davidson |
| ½-½ | 26 |
1924 |
Match | D30 Queen's Gambit Declined |
| 34. J Davidson vs Euwe |
| 1-0 | 50 |
1924 |
Match | D13 Queen's Gambit Declined Slav, Exchange Variation |
| 35. J Davidson vs Euwe |
| ½-½ | 24 |
1924 |
Match | D34 Queen's Gambit Declined, Tarrasch |
| 36. Euwe vs J Davidson |
| 1-0 | 40 |
1924 |
Match | D63 Queen's Gambit Declined, Orthodox Defense |
| 37. Euwe vs J Davidson |
| 1-0 | 38 |
1924 |
Match | E70 King's Indian |
| 38. J Davidson vs Colle |
| 0-1 | 25 |
1925 |
Nederland-België | E32 Nimzo-Indian, Classical |
| 39. Weenink vs J Davidson |
| 0-1 | 24 |
1925 |
Amsterdam | A04 Reti Opening |
| 40. J Davidson vs Euwe |
 | 1-0 | 45 |
1925 |
Amsterdam ;HCL 44 | E60 King's Indian Defense |
| 41. J Davidson vs Samisch |
| 1-0 | 26 |
1925 |
Amsterdam | D07 Queen's Gambit Declined, Chigorin Defense |
| 42. J Davidson vs Janowski |
 | 0-1 | 30 |
1926 |
Semmering | D02 Queen's Pawn Game |
| 43. J Davidson vs V Soultanbeieff |
| 0-1 | 46 |
1926 |
Spa | A34 English, Symmetrical |
| 44. J Davidson vs S Rosselli del Turco |
 | 1-0 | 43 |
1926 |
Semmering | D79 Neo-Grunfeld, 6.O-O, Main line |
| 45. J Davidson vs Vidmar |
| 0-1 | 62 |
1926 |
Semmering | D11 Queen's Gambit Declined Slav |
| 46. Euwe vs J Davidson |
| ½-½ | 42 |
1926 |
Amsterdam | A20 English |
| 47. Tartakower vs J Davidson |
 | 1-0 | 30 |
1926 |
Semmering | D30 Queen's Gambit Declined |
| 48. J Davidson vs Koltanowski |
| 1-0 | 28 |
1926 |
It | E18 Queen's Indian, Old Main line, 7.Nc3 |
| 49. Rubinstein vs J Davidson |
| ½-½ | 61 |
1926 |
Semmering | A46 Queen's Pawn Game |
| 50. E Sapira vs J Davidson |
| 1-0 | 34 |
1926 |
Spa | D46 Queen's Gambit Declined Semi-Slav |