| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. S Agdestein vs Petursson |
| 1-0 | 52 |
1985 |
Norway | D30 Queen's Gambit Declined |
| 27. P Nikolic vs S Agdestein |
| 1-0 | 35 |
1985 |
Naestved | E12 Queen's Indian |
| 28. S Agdestein vs Nunn |
 | ½-½ | 68 |
1985 |
11, Naestved | E83 King's Indian, Samisch |
| 29. S Agdestein vs Alburt |
| ½-½ | 39 |
1985 |
Izt | A15 English |
| 30. S Agdestein vs Tal |
| ½-½ | 41 |
1985 |
Naestved | A55 Old Indian, Main line |
| 31. Hjartarson vs S Agdestein |
| 0-1 | 41 |
1985 |
Gausdal zt | D17 Queen's Gambit Declined Slav |
| 32. S Agdestein vs Petursson |
| 1-0 | 41 |
1985 |
Mch 04 | E12 Queen's Indian |
| 33. Chandler vs S Agdestein |
| ½-½ | 37 |
1985 |
Nimzo-mem, Copenhage | C19 French, Winawer, Advance |
| 34. S Agdestein vs Ulf Andersson |
| ½-½ | 15 |
1985 |
Naestved (Denmark) | D37 Queen's Gambit Declined |
| 35. Blatny vs S Agdestein |
| ½-½ | 66 |
1985 |
Groningen | B25 Sicilian, Closed |
| 36. S Agdestein vs K Spraggett |
| ½-½ | 39 |
1985 |
Taxco | D55 Queen's Gambit Declined |
| 37. Larsen vs S Agdestein |
| 0-1 | 51 |
1985 |
Naestved | A12 English with b3 |
| 38. S Agdestein vs Ftacnik |
| ½-½ | 23 |
1985 |
Naestved 40/(45) | A04 Reti Opening |
| 39. S Agdestein vs Vaganian |
| 0-1 | 37 |
1985 |
Naestved | A57 Benko Gambit |
| 40. Balashov vs S Agdestein |
| ½-½ | 9 |
1985 |
Taxco izt | C05 French, Tarrasch |
| 41. Browne vs S Agdestein |
| ½-½ | 11 |
1985 |
Naestved | D63 Queen's Gambit Declined, Orthodox Defense |
| 42. S Agdestein vs Hjartarson |
| 1-0 | 50 |
1985 |
Nordic-ch playoff-1pl | D37 Queen's Gambit Declined |
| 43. Petursson vs S Agdestein |
| 0-1 | 37 |
1985 |
Mch 04 | E15 Queen's Indian |
| 44. Larsen vs S Agdestein |
| 1-0 | 46 |
1985 |
Gausdal zt | D41 Queen's Gambit Declined, Semi-Tarrasch |
| 45. J Benjamin vs S Agdestein |
| 0-1 | 30 |
1986 |
It (cat.11) | A92 Dutch |
| 46. Murey vs S Agdestein |
| 0-1 | 39 |
1986 |
Jerusalem | C70 Ruy Lopez |
| 47. S Agdestein vs Sosonko |
| ½-½ | 18 |
1986 |
Jerusalem | B63 Sicilian, Richter-Rauzer Attack |
| 48. S Agdestein vs N Nikolic |
| ½-½ | 38 |
1986 |
Wch U20 | D20 Queen's Gambit Accepted |
| 49. S Agdestein vs Plachetka |
| 1-0 | 32 |
1986 |
Malmo op | E62 King's Indian, Fianchetto |
| 50. Korchnoi vs S Agdestein |
| ½-½ | 53 |
1986 |
Jerusalem ,TD 86\\01 | D46 Queen's Gambit Declined Semi-Slav |