Game |
| Result | Moves |
Year | Event/Locale | Opening |
1. H Hosmer vs M Judd |
| 0-1 | 27 | 1870 | Hosmer - Judd | C30 King's Gambit Declined |
2. M Judd vs H Hosmer |
| 0-1 | 19 | 1870 | Hosmer - Judd | C51 Evans Gambit |
3. Mackenzie vs H Hosmer |
 | 0-1 | 60 | 1871 | 2nd American Chess Congress, Cleveland | C15 French, Winawer |
4. H Hosmer vs H D Smith |
| 0-1 | 52 | 1871 | 2nd American Chess Congress, Cleveland | C44 King's Pawn Game |
5. W Haughton vs H Hosmer |
 | 0-1 | 59 | 1871 | 2nd American Chess Congress, Cleveland | C41 Philidor Defense |
6. H Hosmer vs M Judd |
| ½-½ | 38 | 1871 | 2nd American Chess Congress, Cleveland | C77 Ruy Lopez |
7. M Judd vs H Hosmer |
 | 0-1 | 39 | 1871 | 2nd American Chess Congress, Cleveland | B40 Sicilian |
8. H D Smith vs H Hosmer |
| 0-1 | 52 | 1871 | 2nd American Chess Congress, Cleveland | B40 Sicilian |
9. H Hosmer vs P Ware |
| 0-1 | 44 | 1871 | 2nd American Chess Congress, Cleveland | C51 Evans Gambit |
10. H Hosmer vs A Johnston |
 | 1-0 | 20 | 1871 | 2nd American Chess Congress, Cleveland | C01 French, Exchange |
11. H Hosmer vs W Haughton |
 | 1-0 | 24 | 1871 | 2nd American Chess Congress, Cleveland | C33 King's Gambit Accepted |
12. P Ware vs H Hosmer |
| 1-0 | 43 | 1871 | 2nd American Chess Congress, Cleveland | A80 Dutch |
13. M Judd vs H Hosmer |
| 0-1 | 72 | 1871 | 2nd American Chess Congress, Cleveland | B45 Sicilian, Taimanov |
14. H Harding vs H Hosmer |
  | 0-1 | 17 | 1871 | 2nd American Chess Congress, Cleveland | A20 English |
15. F Elder vs H Hosmer |
 | 0-1 | 57 | 1871 | 2nd American Chess Congress, Cleveland | A03 Bird's Opening |
16. Mackenzie vs H Hosmer |
  | 1-0 | 15 | 1871 | 2nd American Chess Congress, Cleveland | C77 Ruy Lopez |
17. H Hosmer vs Mackenzie |
 | ½-½ | 49 | 1871 | 2nd American Chess Congress, Cleveland | C38 King's Gambit Accepted |
18. H Hosmer vs F Elder |
| 1-0 | 31 | 1871 | 2nd American Chess Congress, Cleveland | C67 Ruy Lopez |
19. A Johnston vs H Hosmer |
  | 0-1 | 28 | 1871 | 2nd American Chess Congress, Cleveland | C44 King's Pawn Game |
20. H Kennicott vs H Hosmer |
| 0-1 | 32 | 1874 | 3rd American Chess Congress, Chicago | B20 Sicilian |
21. H Hosmer vs H Kennicott |
  | 1-0 | 29 | 1874 | 3rd American Chess Congress, Chicago | C61 Ruy Lopez, Bird's Defense |
22. H Hosmer vs M Judd |
| 0-1 | 56 | 1874 | 3rd American Chess Congress, Chicago | C45 Scotch Game |
23. M Judd vs H Hosmer |
 | 0-1 | 21 | 1874 | 3rd American Chess Congress, Chicago | C50 Giuoco Piano |
24. Mackenzie vs H Hosmer |
 | 1-0 | 30 | 1874 | 3rd American Chess Congress, Chicago | C80 Ruy Lopez, Open |
25. H Hosmer vs Mackenzie |
  | 1-0 | 47 | 1874 | 3rd American Chess Congress, Chicago | C33 King's Gambit Accepted |