| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. Taimanov vs G Thorhallsson |
 | 1-0 | 34 | 1992 | Peer Gynt | A04 Reti Opening |
| 27. G Thorhallsson vs Van Wely |
| 0-1 | 55 | 1994 | Akureyri | B84 Sicilian, Scheveningen |
| 28. G Thorhallsson vs Petursson |
| 0-1 | 59 | 1994 | Akureyri | B32 Sicilian |
| 29. de Firmian vs G Thorhallsson |
| ½-½ | 54 | 1994 | Akureyri | B32 Sicilian |
| 30. de Firmian vs G Thorhallsson |
| 1-0 | 25 | 1994 | Reykjavik Open | B90 Sicilian, Najdorf |
| 31. G Thorhallsson vs O Thorsson |
| 1-0 | 34 | 1994 | Reykjavik Open | C71 Ruy Lopez |
| 32. Hjartarson vs G Thorhallsson |
| 1-0 | 53 | 1994 | Reykjavik Open | D37 Queen's Gambit Declined |
| 33. G Thorhallsson vs B Werner |
| 1-0 | 75 | 1994 | Reykjavik Open | B03 Alekhine's Defense |
| 34. M M Ivanov vs G Thorhallsson |
| 1-0 | 29 | 1994 | Reykjavik Open | A04 Reti Opening |
| 35. G Thorhallsson vs B Bjornsson |
| 1-0 | 75 | 1994 | Reykjavik Open | C26 Vienna |
| 36. T Ernst vs G Thorhallsson |
| 1-0 | 37 | 1994 | Reykjavik Open | C89 Ruy Lopez, Marshall |
| 37. G Thorhallsson vs J V Gunnarsson |
| 0-1 | 49 | 1994 | Reykjavik Open | E70 King's Indian |
| 38. B Thorfinnsson vs G Thorhallsson |
| 0-1 | 29 | 1994 | Reykjavik Open | E48 Nimzo-Indian, 4.e3 O-O 5.Bd3 d5 |
| 39. G Thorhallsson vs I Sokolov |
| 0-1 | 35 | 1994 | Akureyri | C95 Ruy Lopez, Closed, Breyer |
| 40. T Thorhallsson vs G Thorhallsson |
| 0-1 | 48 | 1994 | Akureyri | C29 Vienna Gambit |
| 41. G Thorhallsson vs B Jonsson |
| 1-0 | 40 | 1994 | Akureyri | B84 Sicilian, Scheveningen |
| 42. H Olafsson vs G Thorhallsson |
| 1-0 | 27 | 1994 | Akureyri | E21 Nimzo-Indian, Three Knights |
| 43. G Thorhallsson vs Hjartarson |
| ½-½ | 83 | 1994 | Akureyri | B41 Sicilian, Kan |
| 44. O Kristjansson vs G Thorhallsson |
| ½-½ | 58 | 1994 | Akureyri | C43 Petrov, Modern Attack |
| 45. K Berg vs G Thorhallsson |
| 1-0 | 28 | 1994 | Akureyri | D01 Richter-Veresov Attack |
| 46. G Thorhallsson vs T Thorhallsson |
| ½-½ | 33 | 1997 | ISL-ch | B73 Sicilian, Dragon, Classical |
| 47. B Thorfinnsson vs G Thorhallsson |
| 1-0 | 37 | 1997 | ISL-ch | A84 Dutch |
| 48. B Halldorsson vs G Thorhallsson |
| ½-½ | 63 | 2000 | Tch-ISL | E20 Nimzo-Indian |
| 49. G Thorhallsson vs H Stefansson |
| 0-1 | 43 | 2001 | Johann Thorir Jonsson Memorial | B48 Sicilian, Taimanov Variation |
| 50. P Thorarinsson vs G Thorhallsson |
| 1-0 | 39 | 2001 | Johann Thorir Jonsson Memorial | D35 Queen's Gambit Declined |
Kibitzing
