| 1546.7 | 1549.8 | 20 | 20 | Ahjum, KMK (Kristen) | | NCF | 1511.8 | 1498.7 | 2024 Kimberley Chess Club School Holiday Tournament (Kings) | 4 | 2024-06-19 | S | B | 1 | 0.5 | 0.5 | 8.4 | 0.52 | 0.48 | 9.6 |
| 1545.4 | 1550.9 | 20 | 20 | Ahjum, KMK (Kristen) | | NCF | 1524.3 | 1512.1 | 2024 Frances Baard Schools Open (U19) | 3 | 2024-02-03 | S | W | 1 | 0.57 | 0.43 | 7.2 | 0.59 | 0.41 | 8.2 |
| 1560.3 | 1570.5 | 20 | 20 | Ahjum, KMK (Kristen) | | NCF | 1536.2 | 1524.7 | 2024 FB Schools Open 4.0 (Open) | 2 | 2024-04-13 | S | B | 0 | 0.49 | -0.49 | -8.1 | 0.51 | -0.51 | -10.2 |
| 1611.9 | 1608.3 | 20 | 20 | Ahjum, KMK (Kristen) | | NCF | 1612.3 | 1614.3 | Kimberley Chess Club School Holiday Tournament 2023 (A) | 4 | 2023-06-29 | S | B | 1 | 0.46 | 0.54 | 9.1 | 0.45 | 0.55 | 11 |
| 1394.5 | 1382 | 20 | 20 | Ahjum, KMK (Kristen) | | NCF | 1390.2 | 1358 | Pixley Chess Open 2 2021 (A) | 5 | 2021-04-17 | S | W | 1 | 0.55 | 0.45 | 7.5 | 0.57 | 0.43 | 8.6 |
| 1371.1 | 1348.8 | 20 | 20 | Ahjum, KMK (Kristen) | | NCF | 1302.8 | 1274.5 | Sol Plaatje Juniors II 2021 | 5 | 2021-02-20 | S | B | 1 | 0.54 | 0.46 | 7.6 | 0.54 | 0.46 | 9.2 |
| 1351.6 | 805.6 | 20 | 20 | Ahjum, KMK (Kristen) | | NCF | 1277.1 | 908 | NC Open Blitz 2020 (B) | 2 | 2020-10-31 | B | W | 0 | 0.63 | -0.63 | -2.9 | 0.42 | -0.42 | -8.4 |
| 1158.2 | 1165.2 | 20 | 20 | Ahjum, KMK (Kristen) | | NCF | 1109.7 | 1120.6 | Russian Connecxion Chess Club: The Ultimate Reign of Terror 2018 (B+C) | 2 | 2018-08-03 | S | B | 0.5 | 0.51 | -0.01 | -0.2 | 0.51 | -0.01 | -0.2 |
| 986.3 | 1033.5 | 20 | 20 | Ahjum, KMK (Kristen) | | NCF | 960.4 | 990.4 | Moja Chess Club Open Tournament 2018 (B) | 3 | 2018-03-03 | S | B | 0 | 0.49 | -0.49 | -9.2 | 0.51 | -0.51 | -10.2 |
| 691.2 | 691.2 | 20 | 20 | Ahjum, KMK (Kristen) | | NCF | 814 | 814 | Pixley ka Seme Open 2018 (U14) | 3 | 2018-02-10 | S | B | 1 | 0.32 | 0.68 | 11.3 | 0.32 | 0.68 | 13.6 |
| 691.2 | 691.2 | 20 | 20 | Ahjum, KMK (Kristen) | | NCF | 814 | 814 | Frances Baard Schools Individual Open (U13 Boys) | 2 | 2018-02-24 | S | W | 0 | 0.4 | -0.4 | -6.6 | 0.4 | -0.4 | -8 |
| 100 | 100 | 20 | 20 | Ahjum, Kmk (Kristen) | | NC | 100 | 100 | Nc Youth Day Rapid Tournament 2017 (C) | 1 | 2017-06-16 | R | W | 0 | 0.5 | -0.5 | -5.4 | -0.5 | 0.5 | 10 |
| 528 | 528 | 20 | 20 | Ahjum, K (Kristen) | | NC | 792 | 792 | Kimberley Chess Club Open Tournament (C) | 3 | 2016-12-10 | S | B | 0 | 0.18 | -0.18 | -3 | -0.18 | 0.18 | 3.6 |
| 569 | 569 | 20 | 20 | Ahjum, K (Kristen) | | NC | 881 | 881 | Kimberley Schools Chess Individuals 2016 (U11) | 3 | 2016-08-13 | S | W | 0 | 0.14 | -0.14 | -2.3 | -0.14 | 0.14 | 2.8 |
| 0 | 0 | 20 | 20 | Ahjum, K (Kristen) | | NC | 869 | 869 | Kimberley Circuit Schools Chess Individuals (U9) | 4 | 2015-10-31 | S | W | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
