| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. O Todorov vs K Stefanov |
| 1-0 | 46 | 2001 | TCh-BUL | D11 Queen's Gambit Declined Slav |
| 52. K Stefanov vs O Antonov |
| 1-0 | 33 | 2001 | TCh-BUL | B05 Alekhine's Defense, Modern |
| 53. P Peev vs K Stefanov |
| 0-1 | 43 | 2001 | TCh-BUL | D44 Queen's Gambit Declined Semi-Slav |
| 54. K Stefanov vs I Manolov |
| 1-0 | 60 | 2001 | TCh-BUL | A07 King's Indian Attack |
| 55. K Stefanov vs N Milchev |
| 1-0 | 47 | 2008 | Bulgarian Team Championship | A27 English, Three Knights System |
| 56. E Ermenkov vs K Stefanov |
| ½-½ | 57 | 2008 | Bulgarian Team Championship | C24 Bishop's Opening |
| 57. K Stefanov vs G Grigorov |
 | ½-½ | 76 | 2008 | Bulgarian Team Championship | E46 Nimzo-Indian |
| 58. K Georgiev vs K Stefanov |
| ½-½ | 31 | 2008 | Bulgarian Team Championship | C42 Petrov Defense |
| 59. K Stefanov vs V Kukov |
| ½-½ | 33 | 2008 | Bulgarian Team Championship | B18 Caro-Kann, Classical |
| 60. K Stefanov vs V Iotov |
| 0-1 | 76 | 2008 | Bulgarian Team Championship | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 61. M Mrdja vs K Stefanov |
| 1-0 | 41 | 2011 | TCh-BUL GpA Men | B12 Caro-Kann Defense |
Kibitzing
