Games played by Henri Lahdelma
| White | ELO W | Black | ELO B | Result | Moves | ECO | Date | Tournament | View |
| Lahdelma, H | 2262 | Keinanen, T | 2460 | 0-1  |
65 | A40 | 2021 | ch-FIN 2021 |
|
| Lahdelma, H | 2270 | Anttila, P | 2266 | 0-1 |
37 | A81 | 2019 | TCh-FIN 2019-20 |
|
| Pulkkinen, K | 2255 | Lahdelma, H | 2270 | 1-0 |
43 | C11 | 2019 | TCh-FIN 2019-20 |
|
| Lahdelma, H | 2270 | Montonen, S | 1974 | 1-0 |
36 | E92 | 2019 | TCh-FIN 2019-20 |
|
| Lahdelma, H | 2188 | Keinanen, T | 2370 | ½-½ |
20 | D31 | 2019 | ch-FIN 2019 |
|
| Lahdelma, H | 2188 | Koykka, P | 2399 | 1-0 |
46 | A57 | 2019 | ch-FIN 2019 |
|
| Sipila, V | 2410 | Lahdelma, H | 2188 | 0-1 |
58 | C11 | 2019 | ch-FIN 2019 |
|
| Lahdelma, H | 2188 | Hokkanen, P | 2199 | 1-0 |
56 | D37 | 2019 | ch-FIN 2019 |
|
| Tiitta, S | 2214 | Lahdelma, H | 2188 | ½-½ |
24 | A00 | 2019 | ch-FIN 2019 |
|
| Lahdelma, H | 2188 | Agopov, M | 2432 | ½-½ |
50 | D85 | 2019 | ch-FIN 2019 |
|
| Nyysti, S | 2320 | Lahdelma, H | 2188 | 1-0 |
42 | C11 | 2019 | ch-FIN 2019 |
|
| Lahdelma, H | 2188 | Ristoja, S | 2197 | 1-0 |
53 | B06 | 2019 | ch-FIN 2019 |
|
| Luukkonen, T | 2330 | Lahdelma, H | 2188 | 1-0 |
61 | C11 | 2019 | ch-FIN 2019 |
|
| Lahdelma, H | 2109 | Salonen, J | 2151 | 1-0 |
42 | A55 | 2019 | TCh-FIN 2018-19 |
|