| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. K Ong vs Jobava |
| ½-½ | 49 | 2005 | European Team Championship | B65 Sicilian, Richter-Rauzer Attack, 7...Be7 Defense, 9...Nxd4 |
| 52. Vaganian vs K Ong |
| 1-0 | 56 | 2005 | European Team Championship | E21 Nimzo-Indian, Three Knights |
| 53. B Kelly vs K Ong |
| ½-½ | 38 | 2005 | European Team Championship | E32 Nimzo-Indian, Classical |
| 54. A Moiseenko vs K Ong |
 | 1-0 | 41 | 2005 | European Team Championship | E21 Nimzo-Indian, Three Knights |
| 55. K Ong vs Speelman |
| ½-½ | 23 | 2005 | European Team Championship | B04 Alekhine's Defense, Modern |
| 56. T Hillarp Persson vs K Ong |
| 1-0 | 45 | 2005 | European Team Championship | E43 Nimzo-Indian, Fischer Variation |
| 57. T Sammalvuo vs K Ong |
| ½-½ | 83 | 2005 | European Team Championship | C92 Ruy Lopez, Closed |
| 58. T Kett vs K Ong |
| ½-½ | 35 | 2005 | European Team Championship | C28 Vienna Game |
| 59. K Ong vs Le Quang Liem |
| 1-0 | 31 | 2006 | World Junior Championship | B93 Sicilian, Najdorf, 6.f4 |
| 60. K Ong vs D Andreikin |
| ½-½ | 47 | 2006 | World Junior Championship | C67 Ruy Lopez |
| 61. J Zhao vs K Ong |
| 1-0 | 26 | 2006 | World Junior Championship | E20 Nimzo-Indian |
| 62. G Margvelashvili vs K Ong |
| 1-0 | 41 | 2006 | World Junior Championship | A13 English |
| 63. A Nasri vs K Ong |
| 1-0 | 40 | 2006 | World Junior Championship | E32 Nimzo-Indian, Classical |
| 64. K Ong vs B Lindberg |
| ½-½ | 26 | 2007 | SWE-ch | B93 Sicilian, Najdorf, 6.f4 |
| 65. K Ong vs P Cramling |
| 0-1 | 40 | 2007 | SWE-ch | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 66. J Bejtovic vs K Ong |
| 1-0 | 47 | 2010 | TCh-SWE Elitserien -11 | C45 Scotch Game |
| 67. K Ong vs J Cuenca Jimenez |
| 0-1 | 39 | 2017 | TCh-SWE Elitserien | A07 King's Indian Attack |
| 68. K Ong vs H Tikkanen |
| ½-½ | 60 | 2018 | TCh-SWE Elitserien | B18 Caro-Kann, Classical |
| 69. K Ong vs A Ornstein |
| 1-0 | 30 | 2020 | TCh-SWE Elitserien | C50 Giuoco Piano |
| 70. K Ong vs J Hector |
| ½-½ | 56 | 2023 | TCh-SWE Elitserien | C70 Ruy Lopez |
Kibitzing
