| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. L Olsson vs S Pedersen |
| 0-1 | 42 |
2001 |
Nordic Championships | E94 King's Indian, Orthodox |
| 2. P Carlsson vs L Olsson |
| 1-0 | 32 |
2001 |
Nordic Championships | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 3. L Olsson vs S Brynell |
| 0-1 | 38 |
2001 |
Nordic Championships | A64 Benoni, Fianchetto, 11...Re8 |
| 4. S Bjarnason vs L Olsson |
| 1-0 | 40 |
2001 |
Nordic Championships | B92 Sicilian, Najdorf, Opocensky Variation |
| 5. L Olsson vs J Jirka |
| 0-1 | 34 |
2003 |
World Junior Championships | D15 Queen's Gambit Declined Slav |
| 6. V Bachin vs L Olsson |
| 1-0 | 35 |
2003 |
World Junior Championships | B23 Sicilian, Closed |
| 7. L Olsson vs S Azarov |
| 0-1 | 40 |
2003 |
World Junior Championships | E09 Catalan, Closed |
| 8. L Olsson vs L Kritz |
 | 0-1 | 59 |
2003 |
World Junior Championships | A62 Benoni, Fianchetto Variation |
| 9. L Olsson vs Carlsen |
| 0-1 | 22 |
2003 |
Politiken Cup | D86 Grunfeld, Exchange |
| 10. L Olsson vs N Pert |
| 0-1 | 39 |
2005 |
15th European Team Championship | D15 Queen's Gambit Declined Slav |
| 11. L Olsson vs Y Kuzubov |
| 0-1 | 38 |
2005 |
15th European Team Championship | E01 Catalan, Closed |
| 12. A Anastasian vs L Olsson |
| 1-0 | 30 |
2005 |
15th European Team Championship | A46 Queen's Pawn Game |
| 13. R Fontaine vs L Olsson |
| 1-0 | 35 |
2005 |
XXXV Rilton Cup | A45 Queen's Pawn Game |
| 14. S Nyysti vs L Olsson |
| 1-0 | 49 |
2005 |
15th European Team Championship | B90 Sicilian, Najdorf |
| 15. S Cicak vs L Olsson |
| 1-0 | 51 |
2006 |
XXXV Rilton Cup | A01 Nimzovich-Larsen Attack |
| 16. Rene Duchene vs L Olsson |
| 1-0 | 46 |
2007 |
Politiken Cup | D07 Queen's Gambit Declined, Chigorin Defense |
| 17. V Malakhov vs L Olsson |
| 1-0 | 48 |
2007 |
Politiken Cup | B50 Sicilian |
| 18. M Orndahl vs L Olsson |
| 1-0 | 40 |
2007 |
Scandinavian Chess Tournament | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 19. L Olsson vs E Hedman |
| 0-1 | 28 |
2007 |
Scandinavian Chess Tournament | D55 Queen's Gambit Declined |
| 20. L Olsson vs M Godena |
| 0-1 | 42 |
2007 |
Politiken Cup | D43 Queen's Gambit Declined Semi-Slav |
