ARBITER PAGE
Personal
De Koster, JW (Johanna Willemiena)
Chess SA id
296006633FIDE id
Date of birth
1996-02-14Gender
FemaleRegion
Cape Town (WCT)Citizen
RSATitles
AOC registered
NoFIDE licenced
No| # | Event | Start | End | Rated | Title | Status |
|---|---|---|---|---|---|---|
| 1 | Laerkool Midvaal Chess Open 2023 | 2023-01-28 | 2023-01-28 | 2023-01-30 | RA | Arbiter |
| 2 | Gaueng Schools D7 2022 | 2022-06-04 | 2022-06-04 | 2022-06-07 | RA | Deputy Chief Arbiter |
| 3 | LS Vryheidsmonument Chess Open 2022 | 2022-05-07 | 2022-05-07 | 2022-05-10 | RA | Deputy Chief Arbiter |
| 4 | Drie Riviere Open 2022 | 2022-03-18 | 2022-03-18 | 2022-03-14 | RA | Deputy Chief Arbiter |
| 5 | Mabaleng Chess Open 2021 | 2021-11-27 | 2021-11-27 | 2021-11-30 | RA | Deputy Chief Arbiter |
| 6 | Fonteine Open 2018 | 2018-10-13 | 2018-10-13 | 2018-10-14 | RA | Arbiter |
| 7 | Henley Open 2018 | 2018-09-08 | 2018-09-08 | 2018-09-09 | RA | Arbiter |
| 8 | Amigo Spur Eligwa Skaak Ope 2017 | 2017-07-29 | 2017-07-29 | 1900-01-01 | RA | Arbiter |
| 9 | Rippies Skaak Ope 2017 | 2017-06-24 | 2017-06-24 | 1900-01-01 | RA | Arbiter |
| 10 | Sasolburg Ope 2017 | 2017-06-03 | 2017-06-03 | 1900-01-01 | RA | Arbiter |
Limited to last 20 events
| # | Event | Start | End | Rated | Title | Status |
|---|---|---|---|---|---|---|
| 1 | Laerkool Midvaal Chess Open 2023 (A) | 2023-01-28 | 2023-01-28 | 2023-01-30 | RA | Arbiter |
| 2 | Laerkool Midvaal Chess Open 2023 (B) | 2023-01-28 | 2023-01-28 | 2023-01-30 | RA | Arbiter |
| 3 | Laerkool Midvaal Chess Open 2023 (C) | 2023-01-28 | 2023-01-28 | 2023-01-30 | RA | Arbiter |
| 4 | Laerkool Midvaal Chess Open 2023 (D) | 2023-01-28 | 2023-01-28 | 2023-01-30 | RA | Arbiter |
| 5 | Laerkool Midvaal Chess Open 2023 (E) | 2023-01-28 | 2023-01-28 | 2023-01-30 | RA | Arbiter |
| 6 | Laerkool Midvaal Chess Open 2023 (LSEN) | 2023-01-28 | 2023-01-28 | 2023-01-30 | RA | Arbiter |
| 7 | Gaueng Schools D7 2022 (U18 Boys) | 2022-06-04 | 2022-06-04 | 2022-06-07 | RA | Deputy Chief Arbiter |
| 8 | Gaueng Schools D7 2022 (U18 Girls) | 2022-06-04 | 2022-06-04 | 2022-06-07 | RA | Deputy Chief Arbiter |
| 9 | Gaueng Schools D7 2022 (U15 Boys) | 2022-06-04 | 2022-06-04 | 2022-06-07 | RA | Deputy Chief Arbiter |
| 10 | Gaueng Schools D7 2022 (U15 Girls) | 2022-06-04 | 2022-06-04 | 2022-06-07 | RA | Deputy Chief Arbiter |
| 11 | Gaueng Schools D7 2022 (U13 Boys) | 2022-06-04 | 2022-06-04 | 2022-06-07 | RA | Deputy Chief Arbiter |
| 12 | Gaueng Schools D7 2022 (U13 Girls) | 2022-06-04 | 2022-06-04 | 2022-06-07 | RA | Deputy Chief Arbiter |
| 13 | Gaueng Schools D7 2022 (U11 Boys) | 2022-06-04 | 2022-06-04 | 2022-06-07 | RA | Deputy Chief Arbiter |
| 14 | Gaueng Schools D7 2022 (U11 Girls) | 2022-06-04 | 2022-06-04 | 2022-06-07 | RA | Deputy Chief Arbiter |
| 15 | LS Vryheidsmonument Chess Open 2022 (A+B) | 2022-05-07 | 2022-05-07 | 2022-05-10 | RA | Deputy Chief Arbiter |
| 16 | LS Vryheidsmonument Chess Open 2022 (C) | 2022-05-07 | 2022-05-07 | 2022-05-10 | RA | Deputy Chief Arbiter |
| 17 | LS Vryheidsmonument Chess Open 2022 (D) | 2022-05-07 | 2022-05-07 | 2022-05-10 | RA | Deputy Chief Arbiter |
| 18 | LS Vryheidsmonument Chess Open 2022 (E) | 2022-05-07 | 2022-05-07 | 2022-05-10 | RA | Deputy Chief Arbiter |
| 19 | LS Vryheidsmonument Chess Open 2022 (LSEN) | 2022-05-07 | 2022-05-07 | 2022-05-10 | RA | Deputy Chief Arbiter |
| 20 | Drie Riviere Open 2022 (A+B) | 2022-03-18 | 2022-03-18 | 2022-03-14 | RA | Deputy Chief Arbiter |
| 21 | Drie Riviere Open 2022 (C) | 2022-03-12 | 2022-03-12 | 2022-03-14 | RA | Deputy Chief Arbiter |
| 22 | Drie Riviere Open 2022 (D) | 2022-02-18 | 2022-02-18 | 2022-03-14 | RA | Deputy Chief Arbiter |
| 23 | Drie Riviere Open 2022 (E) | 2022-03-12 | 2022-03-12 | 2022-03-14 | RA | Deputy Chief Arbiter |
| 24 | Drie Riviere Open 2022 (LSEN) | 2022-03-18 | 2022-03-18 | 2022-03-14 | RA | Deputy Chief Arbiter |
| 25 | Mabaleng Chess Open 2021 (A) | 2021-11-27 | 2021-11-27 | 2021-11-30 | RA | Deputy Chief Arbiter |
| 26 | Mabaleng Chess Open 2021 (B) | 2021-11-21 | 2021-11-21 | 2021-11-30 | RA | Deputy Chief Arbiter |
| 27 | Mabaleng Chess Open 2021 (C) | 2021-11-27 | 2021-11-27 | 2021-11-30 | RA | Deputy Chief Arbiter |
| 28 | Mabaleng Chess Open 2021 (D) | 2021-11-27 | 2021-11-27 | 2021-11-30 | RA | Deputy Chief Arbiter |
| 29 | Mabaleng Chess Open 2021 (E) | 2021-11-27 | 2021-11-27 | 2021-11-30 | RA | Deputy Chief Arbiter |
| 30 | Fonteine Open 2018 (A) | 2018-10-13 | 2018-10-13 | 2018-10-14 | RA | Arbiter |
| 31 | Fonteine Open 2018 (B) | 2018-10-13 | 2018-10-13 | 2018-10-14 | RA | Arbiter |
| 32 | Fonteine Open 2018 (C) | 2018-10-13 | 2018-10-13 | 2018-10-14 | RA | Arbiter |
| 33 | Fonteine Open 2018 (D) | 2018-10-13 | 2018-10-13 | 2018-10-14 | RA | Arbiter |
| 34 | Fonteine Open 2018 (LSEN) | 2018-10-13 | 2018-10-13 | 2018-10-14 | RA | Arbiter |
| 35 | Henley Open 2018 (A) | 2018-09-08 | 2018-09-08 | 2018-09-09 | RA | Arbiter |
| 36 | Henley Open 2018 (B) | 2018-09-08 | 2018-09-08 | 2018-09-09 | RA | Arbiter |
| 37 | Henley Open 2018 (C) | 2018-09-08 | 2018-09-08 | 2018-09-09 | RA | Arbiter |
| 38 | Henley Open 2018 (D) | 2018-09-08 | 2018-09-08 | 2018-09-09 | RA | Arbiter |
| 39 | Amigo Spur Eligwa Skaak Ope 2017 (A) | 2017-07-29 | 2017-07-29 | 1900-01-01 | RA | Arbiter |
| 40 | Amigo Spur Eligwa Skaak Ope 2017 (B) | 2017-07-29 | 2017-07-29 | 1900-01-01 | RA | Arbiter |
| 41 | Amigo Spur Eligwa Skaak Ope 2017 (C) | 2017-07-29 | 2017-07-29 | 1900-01-01 | RA | Arbiter |
| 42 | Amigo Spur Eligwa Skaak Ope 2017 (D) | 2017-07-29 | 2017-07-29 | 1900-01-01 | RA | Arbiter |
| 43 | Rippies Skaak Ope 2017 (A) | 2017-06-24 | 2017-06-24 | 1900-01-01 | RA | Arbiter |
| 44 | Rippies Skaak Ope 2017 (B) | 2017-06-24 | 2017-06-24 | 1900-01-01 | RA | Arbiter |
| 45 | Rippies Skaak Ope 2017 (C) | 2017-06-24 | 2017-06-24 | 1900-01-01 | RA | Arbiter |
| 46 | Rippies Skaak Ope 2017 (D) | 2017-06-24 | 2017-06-24 | 1900-01-01 | RA | Arbiter |
| 47 | Rippies Skaak Ope 2017 (E) | 2017-06-24 | 2017-06-24 | 1900-01-01 | RA | Arbiter |
| 48 | Sasolburg Ope 2017 (A+B) | 2017-06-03 | 2017-06-03 | 1900-01-01 | RA | Arbiter |
| 49 | Sasolburg Ope 2017 (C) | 2017-06-03 | 2017-06-03 | 1900-01-01 | RA | Arbiter |
| 50 | Sasolburg Ope 2017 (D) | 2017-06-03 | 2017-06-03 | 1900-01-01 | RA | Arbiter |