| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. S M Riis vs S Clausen |
| 0-1 | 48 | 1986 | Copenhagen Open | A56 Benoni Defense |
| 27. S Clausen vs P Rewitz |
| 0-1 | 34 | 1986 | Copenhagen Open | B06 Robatsch |
| 28. J Hartung-Nielsen vs S Clausen |
| 1-0 | 40 | 1986 | Copenhagen Open | D05 Queen's Pawn Game |
| 29. K Kojder vs S Clausen |
| 1-0 | 52 | 1986 | Copenhagen Open | D35 Queen's Gambit Declined |
| 30. S Clausen vs C Hoi |
| 0-1 | 44 | 1986 | Copenhagen Open | B09 Pirc, Austrian Attack |
| 31. S Horvath vs S Clausen |
| 0-1 | 57 | 1986 | Copenhagen Open | B08 Pirc, Classical |
| 32. J W Knudsen vs S Clausen |
| 0-1 | 31 | 1986 | Copenhagen Open | A07 King's Indian Attack |
| 33. S Clausen vs H Holmsgaard |
| ½-½ | 44 | 1988 | Lyngby op | E12 Queen's Indian |
| 34. S Clausen vs M Jadoul |
| 0-1 | 33 | 1988 | Copenhagen Open | A40 Queen's Pawn Game |
| 35. P Haugli vs S Clausen |
| 1-0 | 20 | 1988 | Copenhagen Open | B07 Pirc |
| 36. M Kaspersen vs S Clausen |
| 0-1 | 46 | 1988 | Copenhagen Open | E10 Queen's Pawn Game |
| 37. S Clausen vs T Sorensen |
| 0-1 | 61 | 1988 | Copenhagen Open | D34 Queen's Gambit Declined, Tarrasch |
| 38. N Hoiberg vs S Clausen |
| ½-½ | 35 | 1988 | Copenhagen Open | B93 Sicilian, Najdorf, 6.f4 |
| 39. S Clausen vs J Hartung-Nielsen |
| ½-½ | 30 | 1988 | Copenhagen Open | A36 English |
| 40. N S Nilsson vs S Clausen |
| ½-½ | 31 | 1988 | Copenhagen Open | A22 English |
| 41. S Clausen vs A Bang |
| 1-0 | 33 | 1988 | Copenhagen Open | B14 Caro-Kann, Panov-Botvinnik Attack |
| 42. B Stein vs S Clausen |
| ½-½ | 13 | 1988 | Copenhagen Open | A01 Nimzovich-Larsen Attack |
| 43. S Clausen vs Z Sarosi |
| 0-1 | 52 | 1988 | Copenhagen Open | D38 Queen's Gambit Declined, Ragozin Variation |
| 44. S Clausen vs S Hamann |
| ½-½ | 44 | 1989 | Copenhagen Open | A70 Benoni, Classical with 7.Nf3 |
| 45. D Ciric vs S Clausen |
| 1-0 | 27 | 1989 | Copenhagen Open | B08 Pirc, Classical |
| 46. S Clausen vs Z Veroci |
| 0-1 | 34 | 1989 | Copenhagen Open | E73 King's Indian |
| 47. S Clausen vs E Hansen |
| 0-1 | 37 | 1989 | Copenhagen Open | A67 Benoni, Taimanov Variation |
| 48. S Clausen vs R Lilja |
| 1-0 | 27 | 1989 | Copenhagen Open | E73 King's Indian |
| 49. J Adamski vs S Clausen |
| ½-½ | 20 | 1990 | Lyngby op | A30 English, Symmetrical |
| 50. S Clausen vs N J Fries-Nielsen |
| 0-1 | 30 | 1990 | Copenhagen K41 | E60 King's Indian Defense |
Kibitzing
