| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. G Tringov vs S Semkov |
| 1-0 | 58 | 1985 | Varna | A07 King's Indian Attack |
| 52. J Grigorov vs S Semkov |
| 1-0 | 41 | 1985 | Varna | B46 Sicilian, Taimanov Variation |
| 53. S Semkov vs P Atanasov |
| 1-0 | 59 | 1985 | Varna | E60 King's Indian Defense |
| 54. S Semkov vs E Ubilava |
| 0-1 | 32 | 1985 | Varna | D31 Queen's Gambit Declined |
| 55. S Semkov vs E Mnatsakanian |
| ½-½ | 26 | 1985 | Varna | D11 Queen's Gambit Declined Slav |
| 56. B Lalic vs S Semkov |
| ½-½ | 15 | 1985 | Varna | D14 Queen's Gambit Declined Slav, Exchange Variation |
| 57. S Semkov vs D Donchev |
| ½-½ | 14 | 1985 | Varna | B04 Alekhine's Defense, Modern |
| 58. V Inkiov vs S Semkov |
| ½-½ | 29 | 1985 | Varna | D20 Queen's Gambit Accepted |
| 59. S Semkov vs J Diaz |
| 1-0 | 41 | 1985 | Varna | D36 Queen's Gambit Declined, Exchange, Positional line, 6.Qc2 |
| 60. N Spiridonov vs S Semkov |
| ½-½ | 77 | 1985 | Varna | A14 English |
| 61. S Semkov vs Knaak |
| ½-½ | 25 | 1985 | Varna | A53 Old Indian |
| 62. S Semkov vs M Popchev |
| 1-0 | 41 | 1985 | Bulgarian Championship | A50 Queen's Pawn Game |
| 63. P Peev vs S Semkov |
| ½-½ | 67 | 1985 | Bulgarian Championship | D27 Queen's Gambit Accepted, Classical |
| 64. S Semkov vs N Dobrev |
| 1-0 | 82 | 1985 | Bulgarian Championship | E48 Nimzo-Indian, 4.e3 O-O 5.Bd3 d5 |
| 65. G Tringov vs S Semkov |
| ½-½ | 13 | 1985 | Bulgarian Championship | B31 Sicilian, Rossolimo Variation |
| 66. D Donchev vs S Semkov |
| 1-0 | 26 | 1985 | Bulgarian Championship | D31 Queen's Gambit Declined |
| 67. J Grigorov vs S Semkov |
| 1-0 | 62 | 1985 | Bulgarian Championship | B46 Sicilian, Taimanov Variation |
| 68. S Danailov vs S Semkov |
| 0-1 | 39 | 1985 | Bulgarian Championship | E06 Catalan, Closed, 5.Nf3 |
| 69. S Semkov vs V Lukov |
| 1-0 | 34 | 1985 | BUL-ch+ | A44 Old Benoni Defense |
| 70. S Semkov vs I Radulov |
| ½-½ | 26 | 1985 | Bulgarian Championship | A41 Queen's Pawn Game (with ...d6) |
| 71. B Andonov vs S Semkov |
| 0-1 | 38 | 1985 | Bulgarian Championship | A13 English |
| 72. A Kolev vs S Semkov |
| 1-0 | 61 | 1985 | Bulgarian Championship | D31 Queen's Gambit Declined |
| 73. S Semkov vs K Georgiev |
| ½-½ | 15 | 1985 | Bulgarian Championship | B06 Robatsch |
| 74. S Semkov vs V Inkiov |
 | 0-1 | 26 | 1985 | Bulgarian Championship | E43 Nimzo-Indian, Fischer Variation |
| 75. S Semkov vs V Lukov |
| ½-½ | 59 | 1986 | Elenite op | D31 Queen's Gambit Declined |
Kibitzing
