Game |
| Result | Moves |
Year | Event/Locale | Opening |
1. I Niemela vs J Terho |
| 0-1 | 55 | 1927 | club tournament, HSK | C55 Two Knights Defense |
2. I Niemela vs Boris Tschepurnoff |
| 1-0 | 17 | 1930 | Finland National Tournament 5th, first category | C55 Two Knights Defense |
3. V Palomaa vs I Niemela |
| 1-0 | 33 | 1932 | Finland National Tournament 7th | B03 Alekhine's Defense |
4. I Niemela vs E Book |
| 1-0 | 22 | 1934 | Helsinki | C55 Two Knights Defense |
5. R Krogius vs I Niemela |
  | 1-0 | 18 | 1934 | Loviisa | E00 Queen's Pawn Game |
6. I Niemela vs A Tschepurnoff |
| 1-0 | 27 | 1934 | Loviisa | B32 Sicilian |
7. R Krogius vs I Niemela |
| 1-0 | 40 | 1934 | Loviisa | C71 Ruy Lopez |
8. P Tautvaisas vs I Niemela |
| 0-1 | 39 | 1937 | 1st SELL Baltic Student Olympiad | C56 Two Knights |
9. I Niemela vs K Ozols |
| 1-0 | 51 | 1937 | 1st SELL Baltic Student Olympiad | C15 French, Winawer |
10. A E Candolin vs I Niemela |
| 1-0 | 26 | 1937 | Finland National Tournament 13th, 1st category | C62 Ruy Lopez, Old Steinitz Defense |
11. I Niemela vs T Vilen |
| 1-0 | 41 | 1937 | Loviisa | C55 Two Knights Defense |
12. I Niemela vs F Ekstrom |
| 0-1 | 57 | 1948 | Saltsjobaden tt | D22 Queen's Gambit Accepted |
13. E Rojahn vs I Niemela |
| 0-1 | 29 | 1948 | Saltsjobaden tt | E18 Queen's Indian, Old Main line, 7.Nc3 |
14. B Moller vs I Niemela |
| 1-0 | 42 | 1948 | Nordic Congress, Orebro | D51 Queen's Gambit Declined |
15. S Hjorth vs I Niemela |
| ½-½ | 42 | 1948 | Nordic Congress, Orebro | D60 Queen's Gambit Declined, Orthodox Defense |
16. A Bergkvist vs I Niemela |
| 1-0 | 48 | 1950 | Dubrovnik Olympiad | D37 Queen's Gambit Declined |
17. P Panagopoulos vs I Niemela |
| ½-½ | 56 | 1950 | Dubrovnik Olympiad | D63 Queen's Gambit Declined, Orthodox Defense |
18. I Niemela vs M Zapata Vinces |
| 1-0 | 26 | 1950 | Dubrovnik Olympiad | D50 Queen's Gambit Declined |
19. I Niemela vs J H Donner |
 | 1-0 | 30 | 1950 | Dubrovnik Olympiad | E47 Nimzo-Indian, 4.e3 O-O 5.Bd3 |
20. I Niemela vs A Giustolisi |
| 1-0 | 44 | 1950 | Dubrovnik Olympiad | E80 King's Indian, Samisch Variation |
21. C Guimard vs I Niemela |
| ½-½ | 37 | 1950 | Dubrovnik Olympiad | D05 Queen's Pawn Game |
22. I Niemela vs M Kupferstich |
 | 0-1 | 41 | 1950 | Dubrovnik Olympiad | A54 Old Indian, Ukrainian Variation, 4.Nf3 |
23. I Niemela vs L Rellstab |
| ½-½ | 34 | 1950 | Dubrovnik Olympiad | D52 Queen's Gambit Declined |
24. O Morcken vs I Niemela |
| ½-½ | 102 | 1950 | Dubrovnik Olympiad | D60 Queen's Gambit Declined, Orthodox Defense |
25. I Niemela vs P Trifunovic |
| 0-1 | 39 | 1950 | Dubrovnik Olympiad | A54 Old Indian, Ukrainian Variation, 4.Nf3 |