PLAYER PAGE
Johanna Glouwdina Van Zyl
2140146480Pixley-ka-Seme (NCP)Personal
Main rating
| Rating | 1432.7 |
| K-factor | 32 |
| Floor | 932.7 |
| Highest | 1432.7 (2026-09-01) |
| Min/Max +/- allowed | 119 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1434.7 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1432.7 |
| K-factor | 32 |
| Floor | 932.7 |
| Highest | 1432.7 (2026-09-01) |
| Min/Max +/- allowed | 119 |
Standard rating
| Rating | 1431.1 |
| K-factor | 32 |
| Floor | 931.1 |
| Highest | 1431.1 (2026-09-01) |
| Min/Max +/- allowed | 119.3 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1434.7 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1431.1 |
| K-factor | 32 |
| Floor | 931.1 |
| Highest | 1431.1 (2026-09-01) |
| Min/Max +/- allowed | 119.3 |
Rapid 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 |
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 | Northern Cape Closed 2026 (U14 Girls) | Standard | 2026-08-21 | 2026-08-22 | ZF Mgcawu (NZF) | 5 | 1432.7 | 4 | 4 | 1765.7 | 68.1 | Details |
| 2 | Douglas Knights Chess Tournament 2026 (U12) | Standard | 2026-08-15 | 2026-08-15 | Pixley-ka-Seme (NCP) | 5 | 1432.7 | 5 | 3 | 1309.4 | 2.7 | Details |
| 3 | 2026 Kimberley Chess Club Holiday Open 2.0 (Rooks+Queens) | Standard | 2026-07-01 | 2026-07-02 | Frances Baard (NCF) | 6 | 1287.2 | 5 | 2.5 | 1288.9 | -1 | Details |
| 4 | Inter Regional Chess Championship 2026 (Individual U14) | Standard | 2026-05-22 | 2026-05-23 | Mangaung (FMB) | 5 | 1283.5 | 5 | 3 | 1296.6 | 3.7 | Details |
| 5 | 2026 Northern Cape Open Chess Championship (C) | Standard | 2026-04-17 | 2026-04-19 | Frances Baard (NCF) | 7 | 1273.2 | 7 | 3 | 1306.1 | 10.3 | Details |
| 6 | De Aar Open Chess Tournament 2026 (B) | Standard | 2026-01-31 | 2026-01-31 | Pixley-ka-Seme (NCP) | 5 | 1256.7 | 5 | 2.5 | 1315 | 3.5 | Details |
| 7 | Hopetown Chess Tournament 2026 (U12) | Standard | 2026-02-07 | 2026-02-07 | Pixley-ka-Seme (NCP) | 5 | 1256.7 | 5 | 2.5 | 1294.5 | 2.8 | Details |
| 8 | 2025 Mzansi Inter Provincial Team Championships (U12 Combined) | Standard | 2025-12-15 | 2025-12-17 | Nelson Mandela Bay (ENM) | 6 | 1273.9 | 6 | 2 | 1192.9 | -9.6 | Details |
| 9 | Northern Cape Closed 202 (U12 Girls) | Standard | 2025-08-22 | 2025-08-23 | ZF Mgcawu (NZF) | 5 | 1248.5 | 5 | 3 | 1374 | 14.7 | Details |
| 10 | De Aar Primary School 2025 (U12) | Standard | 2025-08-16 | 2025-08-16 | Pixley-ka-Seme (NCP) | 5 | 1248.5 | 5 | 3 | 1306.6 | 6.5 | Details |
| 11 | Hopetown Schools Open 2025 (U11) | Standard | 2025-08-01 | 2025-08-01 | Pixley-ka-Seme (NCP) | 5 | 1248.5 | 4 | 1.5 | 1159.6 | -7 | Details |
| 12 | KCC School Holiday Tournament 2.0 2025 | Standard | 2025-07-02 | 2025-07-02 | Frances Baard (NCF) | 5 | 1247.6 | 5 | 2 | 1260.9 | 0.5 | Details |
| 13 | 2025 Hopetown Schools Chess Tournament (U11+U13) | Standard | 2025-05-17 | 2025-05-17 | Pixley-ka-Seme (NCP) | 5 | 1259.7 | 5 | 2 | 1184.5 | -6.7 | Details |
| 14 | 2025 Frances Baard Schools Open IV (U9+U11) | Standard | 2025-04-17 | 2025-04-17 | Frances Baard (NCF) | 5 | 1182 | 5 | 4 | 1437.6 | 24.5 | Details |
| 15 | Karpov Chess Club Open 2025 | Standard | 2025-03-15 | 2025-03-15 | Frances Baard (NCF) | 5 | 1175 | 5 | 2 | 1209.3 | 4 | Details |
| 16 | 2025 HSDA School Chess Tournament (U9+U11) | Standard | 2025-02-08 | 2025-02-08 | Pixley-ka-Seme (NCP) | 5 | 1132 | 5 | 3 | 1328.6 | 18.6 | Details |
| 17 | Mzansi Interprovincial Youth Chess Championships 2024 (U12 Girls Championship) | Classical | 2024-12-16 | 2024-12-19 | Capricorn (LCP) | 7 | 1156.3 | 6 | 1 | 1027.6 | -18.4 | Details |
| 18 | 2024 Kimberley Chess Club Christmas Open (Bishops) | Standard | 2024-12-07 | 2024-12-07 | Frances Baard (NCF) | 5 | 1156.3 | 4 | 2 | 1234.8 | 6.2 | Details |
| 19 | 2024 Hopetown Schools Chess Tournament (U9+U11) | Standard | 2024-10-12 | 2024-10-12 | Pixley-ka-Seme (NCP) | 5 | 1172.1 | 5 | 2 | 1099.3 | -7.9 | Details |
| 20 | Hopetown Schools Chess Tournament 2024 (U11) | Standard | 2024-08-17 | 2024-08-17 | Pixley-ka-Seme (NCP) | 5 | 1065.7 | 4 | 0.5 | 915.5 | -12.1 | Details |
| 21 | 2024 NC Closed Chess Championships (U12 Girls) | Standard | 2024-08-23 | 2024-08-25 | Frances Baard (NCF) | 5 | 1065.7 | 5 | 4 | 1420.3 | 40 | Details |
| 22 | 2024 Pixley Ka Seme Chess Schools Open 2 (U11) | Standard | 2024-08-03 | 2024-08-03 | Pixley-ka-Seme (NCP) | 5 | 1065.7 | 5 | 3 | 1287 | 21.2 | Details |
| 23 | 2024 HSDA Open 3 (U11) | Standard | 2024-07-27 | 2024-07-27 | Pixley-ka-Seme (NCP) | 5 | 1101.7 | 5 | 2 | 1108.3 | 1.3 | Details |
| 24 | 2024 Frances Baard Grand Prix 2.0 (B) | Standard | 2024-07-06 | 2024-07-06 | Frances Baard (NCF) | 5 | 1101.7 | 4 | 0 | 859.4 | -19.3 | Details |
| 25 | Frances Baard Grand Prix 1.0 2024 (U12) | Standard | 2024-06-29 | 2024-06-29 | Frances Baard (NCF) | 5 | 1139.3 | 5 | 1 | 941.9 | -18.8 | Details |
| 26 | Spartan Bishops Chess Championships 2024 (Big Pawns) | Standard | 2024-05-04 | 2024-05-05 | Bojanala Platina (NBR) | 5 | 1166.9 | 5 | 1 | 1020.6 | -13.8 | Details |
| 27 | Hopetown Open Chess Tournament 2024 (U12) | Standard | 2024-02-10 | 2024-02-10 | Frances Baard (NCF) | 5 | 1099.4 | 5 | 3 | 1258.3 | 15 | Details |
| 28 | 2024 Frances Baard Schools Open (U11) | Standard | 2024-02-03 | 2024-02-03 | Frances Baard (NCF) | 5 | 1099.4 | 5 | 3 | 1284.4 | 18.8 | Details |
| 29 | 2023 Northern Cape Closed Chess Championships (U10 Girls) | Standard | 2023-08-25 | 2023-08-27 | Frances Baard (NCF) | 4 | 1091.5 | 4 | 2 | 1138 | 4.2 | Details |
| 30 | Inter Regional Chess Championship 2023 (U10) | Standard | 2023-05-19 | 2023-05-20 | Mangaung (FMB) | 5 | 1155 | 4 | 0 | 754.5 | -31.8 | Details |
| 31 | Hopetown Schools Chess Open Tournament 2023 (U11) | Standard | 2023-02-25 | 2023-02-25 | John Taolo Gaetswewe (NCJ) | 5 | 1168.1 | 5 | 2 | 1107.6 | -6.7 | Details |
| 32 | Pixley Chess Trials 2022 (U10) | Standard | 2022-09-03 | 2022-09-03 | Pixley-ka-Seme (NCP) | 5 | 1200 | 4 | 1 | 998.7 | -16 | 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 | 36 |
| Wins | 19 |
| Draws | 3 |
| Losses | 14 |
| White | 18 |
| Black | 18 |
| White wins | 8 |
| Black wins | 11 |
| Score | 20.5 |
| Percent | 56.9 |
| Dp | 59 |
| AOR | 1294.5 |
| Performance | 1353.5 |
Game statistics (History)
| Games | 156 |
| Wins | 65 |
| Draws | 11 |
| Losses | 80 |
| White | 77 |
| Black | 79 |
| White wins | 31 |
| Black wins | 34 |
| Score | 70.5 |
| Percent | 45.2 |
| Dp | -40.9 |
| AOR | 1248.8 |
| Performance | 1207.9 |
Rankings (Main)
| National | |
| Overall | 2981 |
| Gender | 434 |
| Age group | 346 |
| Gender/Age | 90 |
| Provincial | |
| Overall | 79 |
| Gender | 10 |
| Age group | 11 |
| Gender/Age | 2 |
| Regional | |
| Overall | 15 |
| Gender | 3 |
| Age group | 5 |
| Gender/Age | 1 |
Rankings (Standard)
| National | |
| Overall | 2657 |
| Gender | 414 |
| Age group | 315 |
| Gender/Age | 86 |
| Provincial | |
| Overall | 80 |
| Gender | 11 |
| Age group | 11 |
| Gender/Age | 3 |
| Regional | |
| Overall | 14 |
| Gender | 3 |
| Age group | 5 |
| Gender/Age | 1 |
Rankings (Rapid)
| 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 |
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 | 36 |
| Score | 20.5 |
| Percent | 56.9 |
| Aor | 1294.5 |
| Dp | 59 |
| Prat | 1353.5 |
Performance (12 months)
| Games | 42 |
| Score | 22.5 |
| Percent | 53.6 |
| Aor | 1300.2 |
| Dp | 30.4 |
| Prat | 1330.6 |
Performance (History)
| Games | 156 |
| Score | 70.5 |
| Percent | 45.2 |
| Aor | 1248.8 |
| Dp | -40.9 |
| Prat | 1207.9 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Van Zyl, FW (Frederick Willem) | 14 | 8 | 6 | Pixley Chess Trials 2022 (U10) | 2026 Kimberley Chess Club Holiday Open 2.0 (Rooks+Queens) | Details |
| Overall | 2 | Niesing, N (Naomi) | 10 | 6 | 4 | Hopetown Schools Chess Open Tournament 2023 (U11) | Northern Cape Closed 202 (U12 Girls) | Details |
| Overall | 3 | Vermeulen, JB (Johannes Bernardus) | 6 | 1 | 5 | Inter Regional Chess Championship 2023 (U10) | Douglas Knights Chess Tournament 2026 (U12) | Details |
| Overall | 4 | De Noon, SJ (Stian Johanco) | 5 | 3 | 2 | 2024 Pixley Ka Seme Chess Schools Open 2 (U11) | Douglas Knights Chess Tournament 2026 (U12) | Details |
| Overall | 5 | Finck, LS (Lynden Shikamaru) | 5 | 2 | 3 | Hopetown Schools Chess Open Tournament 2023 (U11) | Hopetown Chess Tournament 2026 (U12) | Details |
| Standard | 1 | Van Zyl, FW (Frederick Willem) | 14 | 8 | 6 | Pixley Chess Trials 2022 (U10) | 2026 Kimberley Chess Club Holiday Open 2.0 (Rooks+Queens) | Details |
| Standard | 2 | Niesing, N (Naomi) | 10 | 6 | 4 | Hopetown Schools Chess Open Tournament 2023 (U11) | Northern Cape Closed 202 (U12 Girls) | Details |
| Standard | 3 | Vermeulen, JB (Johannes Bernardus) | 6 | 1 | 5 | Inter Regional Chess Championship 2023 (U10) | Douglas Knights Chess Tournament 2026 (U12) | Details |
| Standard | 4 | Finck, LS (Lynden Shikamaru) | 5 | 2 | 3 | Hopetown Schools Chess Open Tournament 2023 (U11) | Hopetown Chess Tournament 2026 (U12) | Details |
| Standard | 5 | De Noon, SJ (Stian Johanco) | 5 | 3 | 2 | 2024 Pixley Ka Seme Chess Schools Open 2 (U11) | Douglas Knights Chess Tournament 2026 (U12) | Details |