PLAYER PAGE
Keira Ziervogel
2080113546Ekurhuleni (GE)Personal
Main rating
| Rating | 1449 |
| K-factor | 32 |
| Floor | 951.1 |
| Highest | 1466.5 (2025-11-01) |
| Min/Max +/- allowed | 113 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1429.2 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1449 |
| K-factor | 32 |
| Floor | 951.1 |
| Highest | 1466.5 (2025-11-01) |
| Min/Max +/- allowed | 113.4 |
Standard rating
| Rating | 1439.7 |
| K-factor | 32 |
| Floor | 943.5 |
| Highest | 1443.5 (2025-09-30) |
| Min/Max +/- allowed | 117.2 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1412.6 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1439.7 |
| K-factor | 32 |
| Floor | 943.5 |
| Highest | 1443.5 (2025-09-30) |
| Min/Max +/- allowed | 117.2 |
Rapid rating
| Rating | 1293.4 |
| K-factor | 36 |
| Floor | 819.8 |
| Highest | 1441.6 (2022-09-01) |
| Min/Max +/- allowed | 117.5 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1103.2 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1293.4 |
| K-factor | 36 |
| Floor | 819.8 |
| Highest | 1441.6 (2022-09-01) |
| Min/Max +/- allowed | 117.5 |
Blitz rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2018-10-01) |
| Min/Max +/- allowed | 165.8 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2018-10-01) |
| Min/Max +/- allowed | 165.8 |
Rating Graph
Tournaments
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | 2025 Gauteng Top Schools Teams (U19 Girls) | Standard | 2025-08-30 | 2025-08-30 | Tshwane (GTP) | 5 | 1451.2 | 5 | 2.5 | 1430 | 0 | Details |
| 2 | St Peters College Sports & Cultural Festival 2025 | Standard | 2025-09-19 | 2025-09-20 | Johannesburg Metro (GJM) | 6 | 1418.5 | 5 | 5 | 1647.4 | 0 | Details |
| 3 | National All Girls' Festival 2025 | Standard | 2025-04-28 | 2025-04-30 | Cape Town (WCT) | 5 | 1370.2 | 4 | 3.5 | 1713.8 | 0 | Details |
| 4 | Gauteng Top Schools 2024 (U19 Girls) | Rapid | 2024-10-05 | 2024-10-05 | Ekurhuleni (GE) | 5 | 1369 | 5 | 3 | 1368.5 | 0 | Details |
| 5 | Chess Molecules Open Chess Tournament 2024 (High School Girls) | Rapid | 2024-06-15 | 2024-06-15 | Johannesburg Metro (GJM) | 5 | 1341.8 | 5 | 4 | 1547.2 | 0 | Details |
| 6 | 2024 Gauteng Inter-Region Chess Championship (U16 Girls) | Standard | 2024-01-13 | 2024-01-14 | Tshwane (GTP) | 5 | 1350.6 | 4 | 2 | 1294.2 | 0 | Details |
| 7 | Africawide Chess Championship 2023 (Open) | Standard | 2023-11-03 | 2023-11-05 | Johannesburg Metro (GJM) | 7 | 1360.1 | 1 | 0 | 1158.3 | 0 | Details |
| 8 | 2023 Gauteng Top Schools (U15 Girls) | Standard | 2023-08-19 | 2023-08-19 | West Rand (GWR) | 5 | 1285.9 | 5 | 4.5 | 1562.5 | 0 | Details |
| 9 | Chess Molecules 16 June Tournament 2023 (High School Girls) | Rapid | 2023-06-16 | 2023-06-16 | Ekurhuleni (GE) | 5 | 1237.7 | 5 | 3.5 | 1370.5 | 0 | Details |
| 10 | Ekurhuleni Chess Trial 3 2023 (U16) | Standard | 2023-06-17 | 2023-06-17 | Ekurhuleni (GE) | 5 | 1237.7 | 5 | 3 | 1388 | 0 | Details |
| 11 | Gauteng Schools Individual Finals 2023 (U15 Girls) | Standard | 2023-05-27 | 2023-05-27 | Ekurhuleni (GE) | 5 | 1212.9 | 5 | 3 | 1289.3 | 0 | Details |
| 12 | Ekurhuleni Trials 2 2023 (U16) | Standard | 2023-04-22 | 2023-04-22 | Ekurhuleni (GE) | 5 | 1260.6 | 5 | 3 | 1393.9 | 0 | Details |
| 13 | National All Girls Festival 2023 | Standard | 2023-04-28 | 2023-04-30 | Mangaung (FMB) | 7 | 1260.6 | 7 | 2 | 1170.4 | 0 | Details |
| 14 | 2023 South African Junior Closed Chess Championships (U16 Girls) | Classical | 2023-03-31 | 2023-04-04 | Chess South Africa (CSA) | 9 | 1260.6 | 9 | 1 | 1030.6 | 0 | Details |
| 15 | Ekhuruleni Chess Trials 1 2023 (U16) | Standard | 2023-03-25 | 2023-03-25 | Ekurhuleni (GE) | 5 | 1284.1 | 5 | 3 | 1387.2 | 0 | Details |
| 16 | Ekurhuleni Springs Open 4 March 2023 (C) | Standard | 2023-03-04 | 2023-03-04 | Ekurhuleni (GE) | 5 | 1284.1 | 4 | 0.5 | 1002.7 | 0 | Details |
| 17 | Chess Power House Feb RR 2023 (Junior) | Standard | 2023-02-18 | 2023-02-19 | Johannesburg Metro (GJM) | 5 | 1285 | 5 | 2 | 1287 | 0 | Details |
| 18 | 2022 South African Junior Wild Card Chess Championships (U16 Girls) | Classical | 2022-12-09 | 2022-12-12 | 4 Knights (4K) | 7 | 1340.4 | 6 | 1.5 | 1081.9 | 0 | Details |
| 19 | 2022 South African Junior Team Chess Championships (U14-U18 Girls) | Classical | 2022-12-04 | 2022-12-08 | 4 Knights (4K) | 7 | 1340.4 | 5 | 3.5 | 1381.1 | 0 | Details |
| 20 | Chess Power House Rapid 2022 (High School) | Rapid | 2022-10-22 | 2022-10-22 | Johannesburg Metro (GJM) | 5 | 1358.4 | 4 | 1.5 | 964 | 0 | Details |
| 21 | OR Tambo Soncini Finals 2022 (Girls) | Rapid | 2022-10-29 | 2022-10-29 | Ekurhuleni (GE) | 5 | 1358.4 | 5 | 4 | 1445.7 | 0 | Details |
| 22 | ACB Tournament 2022 (C) | Standard | 2022-10-08 | 2022-10-08 | Ekurhuleni (GE) | 5 | 1358.4 | 5 | 4 | 1409.2 | 0 | Details |
| 23 | Chess Molecules Championship 2022 (Queens) | Rapid | 2022-09-17 | 2022-09-17 | Johannesburg Metro (GJM) | 5 | 1168 | 5 | 3 | 1368.8 | 0 | Details |
| 24 | Ekurhuleni Soncini Playoffs 2022 (Girls) | Rapid | 2022-09-24 | 2022-09-24 | Ekurhuleni (GE) | 5 | 1168 | 5 | 5 | 1633.7 | 0 | Details |
| 25 | Ekurhuleni Chess Springs Club Open 2022 (D) | Standard | 2022-09-03 | 2022-09-03 | Ekurhuleni (GE) | 5 | 1168 | 5 | 4 | 1538.9 | 0 | Details |
| 26 | 2022 Gauteng Schools Team Championships (U15 Girls) | Standard | 2022-08-26 | 2022-08-26 | Tshwane (GTP) | 5 | 1162.4 | 4 | 2 | 1200.5 | 0 | Details |
| 27 | Ekurhuleni Trials 1 2022 (U16) | Standard | 2022-04-23 | 2022-04-23 | Ekurhuleni (GE) | 5 | 1137.2 | 5 | 2.5 | 1263.9 | 0 | Details |
| 28 | Alberton Chess Club Open 2020 (D) | Standard | 2020-02-22 | 2020-02-22 | Ekurhuleni (GE) | 5 | 1148.2 | 5 | 2 | 1086.8 | 0 | Details |
| 29 | Ekurhuleni South School Chess 2019 (U11 Girls) | Standard | 2019-05-11 | 2019-05-11 | Ekurhuleni (GE) | 5 | 1200 | 4 | 1 | 867.4 | 0 | Details |
Game statistics ( )
| Games | 0 |
| Wins | 0 |
| Draws | 0 |
| Losses | 0 |
| White | 0 |
| Black | 0 |
| White wins | 0 |
| Black wins | 0 |
| Score | 0 |
| Percent | 0 |
| Dp | 0 |
| AOR | 0 |
| Performance | 0 |
Game statistics ()
| Games | 0 |
| Wins | 0 |
| Draws | 0 |
| Losses | 0 |
| White | 0 |
| Black | 0 |
| White wins | 0 |
| Black wins | 0 |
| Score | 0 |
| Percent | 0 |
| Dp | 0 |
| AOR | 0 |
| Performance | 0 |
Game statistics (History)
| Games | 142 |
| Wins | 74 |
| Draws | 11 |
| Losses | 57 |
| White | 74 |
| Black | 68 |
| White wins | 42 |
| Black wins | 32 |
| Score | 79.5 |
| Percent | 56 |
| Dp | 50.9 |
| AOR | 1268 |
| Performance | 1318.9 |
Rankings (Main)
| National | |
| Overall | 2437 |
| Gender | 332 |
| Age group | 304 |
| Gender/Age | 50 |
| Provincial | |
| Overall | 835 |
| Gender | 122 |
| Age group | 109 |
| Gender/Age | 24 |
| Regional | |
| Overall | 131 |
| Gender | 21 |
| Age group | 22 |
| Gender/Age | 5 |
Rankings (Standard)
| National | |
| Overall | 2331 |
| Gender | 332 |
| Age group | 300 |
| Gender/Age | 53 |
| Provincial | |
| Overall | 842 |
| Gender | 127 |
| Age group | 113 |
| Gender/Age | 25 |
| Regional | |
| Overall | 130 |
| Gender | 23 |
| Age group | 22 |
| Gender/Age | 4 |
Rankings (Rapid)
| National | |
| Overall | 2061 |
| Gender | 373 |
| Age group | 198 |
| Gender/Age | 24 |
| Provincial | |
| Overall | 372 |
| Gender | 67 |
| Age group | 35 |
| Gender/Age | 7 |
| Regional | |
| Overall | 126 |
| Gender | 38 |
| Age group | 14 |
| Gender/Age | 5 |
Rankings (Blitz)
| National | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
| Provincial | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
| Regional | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
Performance ( )
| Games | 0 |
| Score | 0 |
| Percent | 0 |
| Aor | 0 |
| Dp | 0 |
| Prat | 0 |
Performance ()
| Games | 0 |
| Score | 0 |
| Percent | 0 |
| Aor | 0 |
| Dp | 0 |
| Prat | 0 |
Performance (12 months)
| Games | 14 |
| Score | 11 |
| Percent | 78.6 |
| Aor | 1345.8 |
| Dp | 242.9 |
| Prat | 1588.7 |
Performance (History)
| Games | 142 |
| Score | 79.5 |
| Percent | 56 |
| Aor | 1268 |
| Dp | 50.9 |
| Prat | 1318.9 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Padayachy, S (Shreya) | 6 | 1 | 5 | 2022 South African Junior Team Chess Championships (U14-U18 Girls) | 2025 Gauteng Top Schools Teams (U19 Girls) | Details |
| Overall | 2 | Radia, D (Diya) | 3 | 0 | 3 | 2022 South African Junior Wild Card Chess Championships (U16 Girls) | Gauteng Top Schools 2024 (U19 Girls) | Details |
| Overall | 3 | Okafor, G (Grace) | 3 | 1 | 2 | Chess Power House Rapid 2022 (High School) | Chess Molecules Open Chess Tournament 2024 (High School Girls) | Details |
| Overall | 4 | Jain, C (Chesta) | 3 | 0 | 3 | 2022 South African Junior Wild Card Chess Championships (U16 Girls) | 2023 South African Junior Closed Chess Championships (U16 Girls) | Details |
| Overall | 5 | Ledwaba, M (Morongwa) | 2 | 1 | 1 | Ekurhuleni Soncini Playoffs 2022 (Girls) | OR Tambo Soncini Finals 2022 (Girls) | Details |
| Standard | 1 | Padayachy, S (Shreya) | 6 | 1 | 5 | 2022 South African Junior Team Chess Championships (U14-U18 Girls) | 2025 Gauteng Top Schools Teams (U19 Girls) | Details |
| Standard | 2 | Jain, C (Chesta) | 3 | 0 | 3 | 2022 South African Junior Wild Card Chess Championships (U16 Girls) | 2023 South African Junior Closed Chess Championships (U16 Girls) | Details |
| Standard | 3 | Radia, D (Diya) | 2 | 0 | 2 | 2022 South African Junior Wild Card Chess Championships (U16 Girls) | 2023 South African Junior Closed Chess Championships (U16 Girls) | Details |
| Standard | 4 | Myburgh, X (Xuan) | 2 | 1 | 1 | Ekhuruleni Chess Trials 1 2023 (U16) | Ekurhuleni Chess Trial 3 2023 (U16) | Details |
| Standard | 5 | Mzizi, A (Ayanda) | 2 | 1 | 1 | Gauteng Schools Individual Finals 2023 (U15 Girls) | 2023 Gauteng Top Schools (U15 Girls) | Details |
| Rapid | 1 | Okafor, G (Grace) | 3 | 1 | 2 | Chess Power House Rapid 2022 (High School) | Chess Molecules Open Chess Tournament 2024 (High School Girls) | Details |
| Rapid | 2 | Ledwaba, M (Morongwa) | 2 | 1 | 1 | Ekurhuleni Soncini Playoffs 2022 (Girls) | OR Tambo Soncini Finals 2022 (Girls) | Details |
| Rapid | 3 | Dingalibaba, R (Reabetswe Ziyanda) | 2 | 1 | 1 | Ekurhuleni Soncini Playoffs 2022 (Girls) | OR Tambo Soncini Finals 2022 (Girls) | Details |