PLAYER PAGE
Nina Grobbelaar
2190314138Tshwane (GTP)Personal
Main rating
| Rating | 1317.3 |
| K-factor | 32 |
| Floor | 946.3 |
| Highest | 1446.3 (2026-03-01) |
| Min/Max +/- allowed | 117 |
| Rating Change () | |
| Games | 5 |
| Score | 2 |
| We | 2.97 |
| SWe | -0.8 |
| Temp +/- | -25.7 |
| Penalties | 0 |
| Weight perform | 1159.4 |
| Final +/- | -25.7 |
| New Rating () | |
| Rating | 1291.6 |
| K-factor | 32 |
| Floor | 946.3 |
| Highest | 1446.3 (2026-03-01) |
| Min/Max +/- allowed | 116.7 |
Standard rating
| Rating | 1303.3 |
| K-factor | 32 |
| Floor | 946.3 |
| Highest | 1446.3 (2026-03-01) |
| Min/Max +/- allowed | 116.7 |
| Rating Change () | |
| Games | 5 |
| Score | 2 |
| We | 2.93 |
| SWe | -0.93 |
| Temp +/- | -29.8 |
| Penalties | 0 |
| Weight perform | 1159.4 |
| Final +/- | -29.8 |
| New Rating () | |
| Rating | 1273.4 |
| K-factor | 32 |
| Floor | 946.3 |
| Highest | 1446.3 (2026-03-01) |
| Min/Max +/- allowed | 116.7 |
Rapid rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2025-02-01) |
| 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 (2025-02-01) |
| Min/Max +/- allowed | 165.8 |
Blitz rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2025-02-01) |
| 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 (2025-02-01) |
| Min/Max +/- allowed | 165.8 |
Rating Graph
Tournaments
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | 4th Khelo India - LCA Chess Tournament 2026 (E) | Standard | 2026-07-12 | 2026-07-12 | Johannesburg Metro (GJM) | 5 | 1317.3 | 5 | 2 | 1107.9 | -25.7 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | 2026 Milos Ristic Teams Open (Junior) | Standard | 2026-05-02 | 2026-05-02 | Tshwane (GTP) | 5 | 1363.8 | 5 | 1 | 1072.8 | -46.5 | Details |
| 2 | South African Junior Closed Chess Championship 2026 (U8 Girls) | Classical | 2026-03-28 | 2026-04-02 | Bojanala Platina (NBR) | 9 | 1446.3 | 9 | 3.5 | 1197.2 | -82.5 | Details |
| 3 | 2026 Blou Bull Chess Tournament (U8) | Standard | 2026-02-21 | 2026-02-21 | Tshwane (GTP) | 5 | 1383.9 | 4 | 3 | 1483.1 | 14.1 | Details |
| 4 | 2026 AHS Chess Tournament (U8) | Standard | 2026-02-28 | 2026-02-28 | Tshwane (GTP) | 5 | 1383.9 | 4 | 3 | 1452.5 | 9.9 | Details |
| 5 | 2026 Tshwane Chess Registration Tournament (U8) | Standard | 2026-01-31 | 2026-01-31 | Tshwane (GTP) | 5 | 1378.9 | 5 | 3 | 1355 | -1.7 | Details |
| 6 | 2025 Mzansi Individual Championships (U8 Girls) | Classical | 2025-12-17 | 2025-12-20 | Nelson Mandela Bay (ENM) | 6 | 1257.2 | 6 | 6 | 1644.7 | 54.8 | Details |
| 7 | 2025 Mzansi Inter Provincial Team Championships (U8 Girls) | Standard | 2025-12-15 | 2025-12-17 | Nelson Mandela Bay (ENM) | 6 | 1257.2 | 6 | 5 | 1466.9 | 24.7 | Details |
| 8 | Gauteng Inter-Region at Emerald Resort 2025 (U8+U10 Girls) | Standard | 2025-12-06 | 2025-12-07 | Sedibeng (GSV) | 5 | 1257.2 | 5 | 2 | 1142.9 | -11.8 | Details |
| 9 | 2025 Centurion Chess Open Tournament (U8) | Standard | 2025-09-27 | 2025-09-27 | Tshwane (GTP) | 5 | 1275.6 | 5 | 2 | 1178.1 | -10.1 | Details |
| 10 | 2025 Etienne Lewis Closed Chess Tournament (U8) | Standard | 2025-08-09 | 2025-08-09 | Tshwane (GTP) | 5 | 1299.4 | 5 | 2 | 1186.1 | -13.3 | Details |
| 11 | 2025 Wynie Robbertse Chess Tournament (U8) | Standard | 2025-07-19 | 2025-07-19 | Tshwane (GTP) | 5 | 1224.4 | 5 | 2.5 | 1280 | 4.6 | Details |
| 12 | South African Open 2025 (U8 Girls) | Classical | 2025-07-03 | 2025-07-05 | Johannesburg Metro (GJM) | 5 | 1224.4 | 5 | 4 | 1495.5 | 31 | Details |
| 13 | Third Knight Riders Junior Open 2025 (U8) | Standard | 2025-06-22 | 2025-06-22 | Johannesburg Metro (GJM) | 5 | 1201.9 | 5 | 3 | 1323.1 | 12.4 | Details |
| 14 | 2025 Silver Lakes Chess Club Open Chess Tournament (U8) | Standard | 2025-05-03 | 2025-05-03 | Tshwane (GTP) | 5 | 1216.6 | 4 | 1 | 1061.6 | -12.1 | Details |
| 15 | Lubowski Open 2025 (E+F) | Standard | 2025-03-21 | 2025-03-21 | Tshwane (GTP) | 5 | 1199.5 | 5 | 3 | 1279.1 | 9.6 | Details |
| 16 | 2025 Chris Greyling Open Chess Tournament (U8) | Standard | 2025-03-15 | 2025-03-15 | Tshwane (GTP) | 5 | 1199.5 | 4 | 1 | 1095.1 | -8.3 | Details |
| 17 | AHS Open Chess Tournament 2025 (U8) | Standard | 2025-03-01 | 2025-03-01 | Tshwane (GTP) | 5 | 1199.5 | 4 | 2 | 1293.1 | 7.3 | Details |
| 18 | Constantiapark Open 2025 (U8) | Standard | 2025-02-15 | 2025-02-15 | Tshwane (GTP) | 5 | 1198.5 | 4 | 2 | 1256.5 | 4.5 | Details |
| 19 | 2025 Blou Bul Open Chess Tournament (F) | Standard | 2025-02-08 | 2025-02-08 | Tshwane (GTP) | 5 | 1198.5 | 4 | 1.5 | 1118.4 | -6.3 | Details |
| 20 | 2025 Tshwane Chess OPEN Registration Tournament (U8) | Standard | 2025-01-25 | 2025-01-25 | Tshwane (GTP) | 5 | 1200 | 4 | 1.5 | 1083.5 | -9.1 | Details |
Game statistics ( )
| Games | 5 |
| Wins | 2 |
| Draws | 0 |
| Losses | 3 |
| White | 2 |
| Black | 3 |
| White wins | 1 |
| Black wins | 1 |
| Score | 2 |
| Percent | 40 |
| Dp | -85 |
| AOR | 1192.9 |
| Performance | 1107.9 |
Game statistics ()
| Games | 32 |
| Wins | 15 |
| Draws | 1 |
| Losses | 16 |
| White | 15 |
| Black | 17 |
| White wins | 7 |
| Black wins | 8 |
| Score | 15.5 |
| Percent | 48.4 |
| Dp | -13.3 |
| AOR | 1269.4 |
| Performance | 1256.1 |
Game statistics (History)
| Games | 103 |
| Wins | 52 |
| Draws | 4 |
| Losses | 47 |
| White | 51 |
| Black | 52 |
| White wins | 28 |
| Black wins | 24 |
| Score | 54 |
| Percent | 52.4 |
| Dp | 20.6 |
| AOR | 1250.4 |
| Performance | 1271.1 |
Rankings (Main)
| National | |
| Overall | 5854 |
| Gender | 1041 |
| Age group | 34 |
| Gender/Age | 10 |
| Provincial | |
| Overall | 1967 |
| Gender | 348 |
| Age group | 10 |
| Gender/Age | 3 |
| Regional | |
| Overall | 676 |
| Gender | 116 |
| Age group | 3 |
| Gender/Age | 2 |
Rankings (Standard)
| National | |
| Overall | 5620 |
| Gender | 1056 |
| Age group | 37 |
| Gender/Age | 10 |
| Provincial | |
| Overall | 1993 |
| Gender | 370 |
| Age group | 12 |
| Gender/Age | 3 |
| Regional | |
| Overall | 703 |
| Gender | 126 |
| Age group | 3 |
| Gender/Age | 2 |
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 | 5 |
| Score | 2 |
| Percent | 40 |
| Aor | 1192.9 |
| Dp | -85 |
| Prat | 1107.9 |
Performance ()
| Games | 32 |
| Score | 15.5 |
| Percent | 48.4 |
| Aor | 1269.4 |
| Dp | -13.3 |
| Prat | 1256.1 |
Performance (12 months)
| Games | 59 |
| Score | 32.5 |
| Percent | 55.1 |
| Aor | 1251.7 |
| Dp | 43.2 |
| Prat | 1294.9 |
Performance (History)
| Games | 103 |
| Score | 54 |
| Percent | 52.4 |
| Aor | 1250.4 |
| Dp | 20.6 |
| Prat | 1271.1 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Conradie, L (Lily) | 5 | 4 | 1 | 2025 Blou Bul Open Chess Tournament (F) | South African Junior Closed Chess Championship 2026 (U8 Girls) | Details |
| Overall | 2 | Modisane, P (Ponatshego) | 4 | 1 | 3 | 2025 Mzansi Inter Provincial Team Championships (U8 Girls) | South African Junior Closed Chess Championship 2026 (U8 Girls) | Details |
| Overall | 3 | Sekgobela, A (Adil) | 4 | 2 | 2 | 2025 Wynie Robbertse Chess Tournament (U8) | 2026 AHS Chess Tournament (U8) | Details |
| Overall | 4 | Mendonca, M (Mark) | 4 | 3 | 1 | 2025 Tshwane Chess OPEN Registration Tournament (U8) | 2025 Chris Greyling Open Chess Tournament (U8) | Details |
| Overall | 5 | Strydom, J (Jannes) | 4 | 1 | 3 | 2025 Wynie Robbertse Chess Tournament (U8) | 2026 Blou Bull Chess Tournament (U8) | Details |
| Standard | 1 | Conradie, L (Lily) | 5 | 4 | 1 | 2025 Blou Bul Open Chess Tournament (F) | South African Junior Closed Chess Championship 2026 (U8 Girls) | Details |
| Standard | 2 | Mendonca, M (Mark) | 4 | 3 | 1 | 2025 Tshwane Chess OPEN Registration Tournament (U8) | 2025 Chris Greyling Open Chess Tournament (U8) | Details |
| Standard | 3 | Strydom, J (Jannes) | 4 | 1 | 3 | 2025 Wynie Robbertse Chess Tournament (U8) | 2026 Blou Bull Chess Tournament (U8) | Details |
| Standard | 4 | Modisane, P (Ponatshego) | 4 | 1 | 3 | 2025 Mzansi Inter Provincial Team Championships (U8 Girls) | South African Junior Closed Chess Championship 2026 (U8 Girls) | Details |
| Standard | 5 | Sekgobela, A (Adil) | 4 | 2 | 2 | 2025 Wynie Robbertse Chess Tournament (U8) | 2026 AHS Chess Tournament (U8) | Details |