| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. M Kravtsiv vs K Stupak |
| 1-0 | 30 | 2008 | World Junior Championship | C05 French, Tarrasch |
| 52. K Stupak vs V Laznicka |
| 0-1 | 29 | 2008 | World Junior Championship | E04 Catalan, Open, 5.Nf3 |
| 53. O Abdulov vs K Stupak |
| 1-0 | 31 | 2008 | World Junior Championship | C01 French, Exchange |
| 54. K Stupak vs O Yaksin |
| ½-½ | 24 | 2008 | World Junior Championship | E04 Catalan, Open, 5.Nf3 |
| 55. J Plenca vs K Stupak |
| 0-1 | 57 | 2008 | World Junior Championship | C11 French |
| 56. K Stupak vs D Benidze |
| ½-½ | 32 | 2008 | World Junior Championship | A46 Queen's Pawn Game |
| 57. V Kulakov vs K Stupak |
| 1-0 | 40 | 2008 | World Junior Championship | A46 Queen's Pawn Game |
| 58. K Stupak vs G Froewis |
| 1-0 | 41 | 2008 | EU-ch U18 18th | E06 Catalan, Closed, 5.Nf3 |
| 59. M Pacher vs K Stupak |
| 0-1 | 56 | 2008 | EU-ch U18 18th | D35 Queen's Gambit Declined |
| 60. K Stupak vs D Benidze |
| ½-½ | 21 | 2008 | EU-ch U18 18th | E06 Catalan, Closed, 5.Nf3 |
| 61. S Martinovic vs K Stupak |
| ½-½ | 26 | 2008 | EU-ch U18 18th | E20 Nimzo-Indian |
| 62. K Stupak vs A Volodin |
| 1-0 | 52 | 2008 | EU-ch U18 18th | A30 English, Symmetrical |
| 63. I Rozum vs K Stupak |
| ½-½ | 60 | 2008 | EU-ch U18 18th | E00 Queen's Pawn Game |
| 64. K Stupak vs E Can |
| ½-½ | 21 | 2008 | EU-ch U18 18th | D78 Neo-Grunfeld, 6.O-O c6 |
| 65. V Rasulov vs K Stupak |
| 1-0 | 37 | 2008 | EU-ch U18 18th | C04 French, Tarrasch, Guimard Main line |
| 66. K Stupak vs T Burg |
| 1-0 | 23 | 2008 | EU-ch U18 18th | A45 Queen's Pawn Game |
| 67. T Markowski vs K Stupak |
| 1-0 | 83 | 2008 | 8th Amplico AIG Life Rapid | A30 English, Symmetrical |
| 68. L Rogule vs K Stupak |
| 0-1 | 47 | 2009 | Czech Open A | A13 English |
| 69. K Stupak vs K Trygstad |
| 1-0 | 25 | 2009 | Czech Open A | A45 Queen's Pawn Game |
| 70. A Kireev vs K Stupak |
| 0-1 | 44 | 2009 | Czech Open A | A46 Queen's Pawn Game |
| 71. K Stupak vs V Babula Sr |
| ½-½ | 14 | 2009 | Czech Open A | A46 Queen's Pawn Game |
| 72. V Laznicka vs K Stupak |
 | 1-0 | 27 | 2009 | Czech Open A | E46 Nimzo-Indian |
| 73. K Stupak vs R Biolek Jr |
| ½-½ | 14 | 2009 | Czech Open A | D07 Queen's Gambit Declined, Chigorin Defense |
| 74. M Serov vs K Stupak |
| ½-½ | 44 | 2009 | Czech Open A | A40 Queen's Pawn Game |
| 75. K Stupak vs P Panteleev |
| 1-0 | 50 | 2009 | Czech Open A | D78 Neo-Grunfeld, 6.O-O c6 |
Kibitzing
