| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. H Lahlum vs David |
 | 0-1 | 9 |
1990 |
Gousdal Open Peer Gy | D03 Torre Attack (Tartakower Variation) |
| 2. H Lahlum vs Hebden |
| 0-1 | 47 |
1992 |
Gausdal Troll-Masters | A48 King's Indian |
| 3. H Lahlum vs I Rogers |
| 0-1 | 42 |
1996 |
Troll Gausdal NOR | B06 Robatsch |
| 4. R Djurhuus vs H Lahlum |
 | 1-0 | 76 |
2000 |
open | C07 French, Tarrasch |
| 5. H Lahlum vs Tiviakov |
| 0-1 | 49 |
2000 |
open | E32 Nimzo-Indian, Classical |
| 6. Ove Saevareid vs H Lahlum |
| 1-0 | 40 |
2001 |
Nordic Championships | A13 English |
| 7. H Lahlum vs F Christenson |
| 0-1 | 43 |
2001 |
ch-NOR | D20 Queen's Gambit Accepted |
| 8. M Petrov vs H Lahlum |
| 1-0 | 33 |
2001 |
Classics IMA | C02 French, Advance |
| 9. M Sorsa vs H Lahlum |
| 1-0 | 41 |
2001 |
Nordic Championships | A13 English |
| 10. E J Gausel vs H Lahlum |
| 1-0 | 42 |
2001 |
ch-NOR | A13 English |
| 11. D Hersvik vs H Lahlum |
| 1-0 | 37 |
2001 |
Classics IMA | A07 King's Indian Attack |
| 12. H Lahlum vs A Gunnarsson |
| 0-1 | 34 |
2001 |
Nordic Championships | D10 Queen's Gambit Declined Slav |
| 13. R Djurhuus vs H Lahlum |
| 1-0 | 25 |
2001 |
ch-NOR | D30 Queen's Gambit Declined |
| 14. D Sebastian vs H Lahlum |
| 1-0 | 47 |
2001 |
6th Wichern Open | C18 French, Winawer |
| 15. S Heim vs H Lahlum |
| 1-0 | 33 |
2001 |
Nordic Championships | C07 French, Tarrasch |
| 16. A Groenn vs H Lahlum |
| 1-0 | 38 |
2001 |
TCh-NOR Final | D02 Queen's Pawn Game |
| 17. H Sorensen vs H Lahlum |
| 1-0 | 90 |
2001 |
Nordic Championships | A13 English |
| 18. T Bae vs H Lahlum |
| 1-0 | 55 |
2001 |
ch-NOR | A13 English |
| 19. E Vegh vs H Lahlum |
| 1-0 | 38 |
2001 |
Classics IMA | D31 Queen's Gambit Declined |
| 20. E Forsaa vs H Lahlum |
| 1-0 | 64 |
2006 |
Politiken Cup | C17 French, Winawer, Advance |
| 21. D Suarez Pousa vs H Lahlum |
| 1-0 | 57 |
2007 |
Arctic Chess Challenge | C01 French, Exchange |
| 22. H Lahlum vs V Gashimov |
| 0-1 | 47 |
2007 |
Arctic Chess Challenge | E35 Nimzo-Indian, Classical, Noa Variation, 5.cd ed |
| 23. Epishin vs H Lahlum |
| 1-0 | 26 |
2007 |
Arctic Chess Challenge | D45 Queen's Gambit Declined Semi-Slav |