| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. R Hardarson vs D King |
| 0-1 | 24 |
1984 |
Reykjavik | B93 Sicilian, Najdorf, 6.f4 |
| 2. R Hardarson vs P Petursson |
| 1-0 | 29 |
1984 |
It Reykjavik (Iceland) (226) | B32 Sicilian |
| 3. R Hardarson vs Petursson |
| 0-1 | 37 |
1984 |
Neskaupsstadur Icela | B32 Sicilian |
| 4. R Hardarson vs Hjartarson |
| 0-1 | 30 |
1991 |
ISL-ch | B21 Sicilian, 2.f4 and 2.d4 |
| 5. R Hardarson vs B Einarsson |
| 1-0 | 52 |
1998 |
ch-ISL | B21 Sicilian, 2.f4 and 2.d4 |
| 6. R Hardarson vs A Moller |
| 1-0 | 34 |
1999 |
Politiken Cup | B21 Sicilian, 2.f4 and 2.d4 |
| 7. R Hardarson vs A Schmied |
| 1-0 | 26 |
2000 |
Reykjavik op19 | B74 Sicilian, Dragon, Classical |
| 8. R Hardarson vs Conquest |
| 0-1 | 41 |
2000 |
Reykjavik op19 | B21 Sicilian, 2.f4 and 2.d4 |
| 9. R Hardarson vs M Llaneza-Vega |
| 1-0 | 28 |
2001 |
Valoz Cup | B32 Sicilian |
| 10. R Hardarson vs E Bjornsson |
| 1-0 | 22 |
2001 |
ISL-chT 2000/01 | B20 Sicilian |
| 11. R Hardarson vs T Bjornsson |
| ½-½ | 16 |
2001 |
Jonsson Mem Open | B20 Sicilian |
| 12. R Hardarson vs T Nyback |
| 0-1 | 27 |
2001 |
Jonsson Mem Open | B20 Sicilian |
| 13. R Hardarson vs G Palmason |
| 1-0 | 34 |
2001 |
Jonsson Mem Open | B20 Sicilian |
| 14. R Hardarson vs Hjartarson |
| 0-1 | 43 |
2003 |
Greenland Open | B20 Sicilian |
| 15. R Hardarson vs McShane |
| 0-1 | 32 |
2003 |
Greenland Open | B20 Sicilian |
| 16. R Hardarson vs I Krush |
| ½-½ | 65 |
2004 |
Reykjavik Open | B20 Sicilian |
| 17. R Hardarson vs O Kjartansson |
| 1-0 | 32 |
2004 |
Reykjavik Open | B76 Sicilian, Dragon, Yugoslav Attack |
| 18. R Hardarson vs S Bergsson |
| 1-0 | 50 |
2004 |
Reykjavik Open | B43 Sicilian, Kan, 5.Nc3 |
| 19. R Hardarson vs O Korneev |
| 0-1 | 48 |
2006 |
European Club Cup | B42 Sicilian, Kan |
| 20. R Hardarson vs B Bednay |
| 1-0 | 53 |
2006 |
FSIMA February | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 21. R Hardarson vs J Moussard |
| ½-½ | 106 |
2006 |
FSIMA February | B38 Sicilian, Accelerated Fianchetto, Maroczy Bind, 6.Be3 |
| 22. R Hardarson vs Lutsko |
| 0-1 | 35 |
2006 |
European Club Cup | B42 Sicilian, Kan |
| 23. R Hardarson vs B Vuckovic |
| ½-½ | 24 |
2007 |
European Club Cup | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 24. R Hardarson vs E Hermansson |
| ½-½ | 52 |
2008 |
Euro Club Cup | B33 Sicilian |
| 25. R Hardarson vs E Pileckis |
| 1-0 | 38 |
2008 |
Euro Club Cup | B33 Sicilian |
