PLAYER PAGE
Janina Van Biljon
2120139974Tshwane (GTP)Personal
Main rating
| Rating | 1202.9 |
| K-factor | 36 |
| Floor | 789.3 |
| Highest | 1289.3 (2025-06-01) |
| Min/Max +/- allowed | 146 |
| Rating Change () | |
| Games | 9 |
| Score | 5 |
| We | 2.91 |
| SWe | -0.42 |
| Temp +/- | -15.2 |
| Penalties | 0 |
| Weight perform | 1265.9 |
| Final +/- | +63 |
| New Rating () | |
| Rating | 1265.9 |
| K-factor | 36 |
| Floor | 789.3 |
| Highest | 1289.3 (2025-06-01) |
| Min/Max +/- allowed | 146 |
Standard rating
| Rating | 1177.3 |
| K-factor | 36 |
| Floor | 786.5 |
| Highest | 1286.5 (2025-06-01) |
| Min/Max +/- allowed | 146.6 |
| Rating Change () | |
| Games | 4 |
| Score | 2 |
| We | 0.68 |
| SWe | -0.15 |
| Temp +/- | -5.4 |
| Penalties | 0 |
| Weight perform | 1239.6 |
| Final +/- | +62.3 |
| New Rating () | |
| Rating | 1239.6 |
| K-factor | 36 |
| Floor | 786.5 |
| Highest | 1286.5 (2025-06-01) |
| Min/Max +/- allowed | 146.6 |
Rapid rating
| Rating | 1223.9 |
| K-factor | 36 |
| Floor | 723.9 |
| Highest | 1223.9 (2026-06-01) |
| Min/Max +/- allowed | 160.3 |
| Rating Change () | |
| Games | 5 |
| Score | 3 |
| We | 2.66 |
| SWe | -0.74 |
| Temp +/- | -26.8 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | -26.8 |
| New Rating () | |
| Rating | 1197.1 |
| K-factor | 36 |
| Floor | 723.9 |
| Highest | 1223.9 (2026-06-01) |
| Min/Max +/- allowed | 160.3 |
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 |
| 1 | Gauteng Closed Chess Championships 2026 (U16 Girls) | Standard | 2026-10-17 | 2026-10-17 | Ekurhuleni (GE) | 5 | 1202.9 | 4 | 2 | 1473.2 | 0 | Details |
| 2 | Gauteng Top Schools Teams 2026 (U15 Girls) | Rapid | 2026-08-28 | 2026-08-28 | Ekurhuleni (GE) | 5 | 1202.9 | 5 | 3 | 1351.9 | 5.9 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | 2026 Etienne Lewis (U16) | Standard | 2026-08-08 | 2026-08-10 | Tshwane (GTP) | 7 | 1202.9 | 7 | 2 | 1168.7 | -11.8 | Details |
| 2 | 2026 Anton Van Wouw Open (D) | Standard | 2026-06-20 | 2026-06-20 | Tshwane (GTP) | 5 | 1255.5 | 5 | 2 | 1013.2 | -41.3 | Details |
| 3 | 2026 D4 District Individuals (U15 Girls) | Standard | 2026-05-30 | 2026-05-30 | Tshwane (GTP) | 5 | 1255.5 | 5 | 2 | 1266.2 | 0.5 | Details |
| 4 | Kloof Kings and Queens Clash 2026 (Plate) | Rapid | 2026-04-11 | 2026-04-11 | Tshwane (GTP) | 2 | 1220.2 | 2 | 2 | 1615.3 | 23.5 | Details |
| 5 | Kloof Kings and Queens Clash 2026 (First Round) | Rapid | 2026-04-11 | 2026-04-11 | Tshwane (GTP) | 3 | 1220.2 | 3 | 2 | 1341 | 11.8 | Details |
| 6 | 2026 Piet Robbertse Open Chess Tournament (D) | Standard | 2026-02-07 | 2026-02-08 | Tshwane (GTP) | 5 | 1219.3 | 5 | 3 | 1425.1 | 17.6 | Details |
| 7 | 2026 Tshwane Chess Registration Tournament (D1) | Standard | 2026-01-31 | 2026-01-31 | Tshwane (GTP) | 5 | 1219.3 | 5 | 2 | 1106.3 | -11.6 | Details |
| 8 | 2025 Mzansi Inter Provincial Team Championships (U16 Girls) | Standard | 2025-12-15 | 2025-12-17 | Nelson Mandela Bay (ENM) | 6 | 1237.9 | 4 | 1 | 1168.1 | -4.1 | Details |
| 9 | Gauteng Inter-Region at Emerald Resort 2025 (U14 Girls) | Standard | 2025-12-06 | 2025-12-07 | Sedibeng (GSV) | 5 | 1237.9 | 4 | 1 | 1045.2 | -18.6 | Details |
| 10 | 2025 Gauteng Schools Provincial Individual Chess Championship (U13 Girls) | Standard | 2025-09-27 | 2025-09-27 | Tshwane (GTP) | 5 | 1242.1 | 5 | 2.5 | 1210.6 | -2.2 | Details |
| 11 | 2025 Etienne Lewis Closed Chess Tournament (U14) | Standard | 2025-08-08 | 2025-08-10 | Tshwane (GTP) | 7 | 1229.6 | 7 | 3 | 1270.7 | 6.9 | Details |
| 12 | 2025 Wynie Robbertse Chess Tournament (D) | Standard | 2025-07-19 | 2025-07-19 | Tshwane (GTP) | 5 | 1257.8 | 5 | 2 | 1103.7 | -15.6 | Details |
| 13 | 2025 Elise Steenkamp Open Chess Tournament (Bishop) | Standard | 2025-06-14 | 2025-06-15 | Tshwane (GTP) | 5 | 1289.3 | 5 | 2 | 1136.9 | -17.5 | Details |
| 14 | 2025 Tshwane South School District Individual Finals (D4) (U13 Girls) | Standard | 2025-05-10 | 2025-05-10 | Tshwane (GTP) | 5 | 1234.3 | 5 | 3 | 1470.3 | 23.6 | Details |
| 15 | Constantiapark Open 2025 (D) | Standard | 2025-02-15 | 2025-02-15 | Tshwane (GTP) | 5 | 1203.2 | 5 | 2.5 | 1264.7 | 5.3 | Details |
| 16 | 2025 Tshwane Chess OPEN Registration Tournament (B3) | Standard | 2025-01-25 | 2025-01-25 | Tshwane (GTP) | 5 | 1216.5 | 4 | 1 | 1122.9 | -7.5 | Details |
| 17 | Gauteng Inter-Region at UJ 2024 (U14 Girls) | Standard | 2024-12-07 | 2024-12-08 | Johannesburg Metro (GJM) | 5 | 1172.5 | 4 | 2 | 1416.9 | 21.4 | Details |
| 18 | Lardies Ope 2024 (C) | Standard | 2024-10-26 | 2024-10-26 | Tshwane (GTP) | 5 | 1125.9 | 5 | 3.5 | 1385.7 | 25.9 | Details |
| 19 | 2024 Etienne Lewis (U14) | Standard | 2024-08-30 | 2024-09-01 | Tshwane (GTP) | 7 | 1147.2 | 7 | 2 | 1067.4 | -11.8 | Details |
| 20 | 2024 Alekhine Open Chess Tournament (B) | Standard | 2024-08-09 | 2024-08-10 | Tshwane (GTP) | 5 | 1200.7 | 4 | 0 | 865.5 | -29.6 | Details |
| 21 | 2024 Tshwane South School District CLOSED Individual Championships (U13 Girls) | Standard | 2024-05-11 | 2024-05-11 | Tshwane (GTP) | 5 | 1205.5 | 5 | 2 | 1186.4 | -2.7 | Details |
| 22 | 2024 Silver Lakes Open Chess Tournament (D3) | Standard | 2024-04-20 | 2024-04-20 | Tshwane (GTP) | 5 | 1181.3 | 5 | 3 | 1313.6 | 12.1 | Details |
| 23 | 2024 Wynie Robbertse Chess Tournament (D2) | Standard | 2024-03-02 | 2024-03-02 | Tshwane (GTP) | 5 | 1170.7 | 5 | 2.5 | 1231.8 | 5.3 | Details |
| 24 | 2024 Constantiapark Open (D1) | Standard | 2024-02-17 | 2024-02-17 | Tshwane (GTP) | 5 | 1170 | 5 | 2 | 1181.3 | 0.3 | Details |
| 25 | D4 Individuals 2022 (U11 Girls) | Rapid | 2022-04-23 | 2022-04-23 | Tshwane (GTP) | 7 | 1200 | 6 | 2 | 1023.1 | -15.1 | Details |
Game statistics ( )
| Games | 4 |
| Wins | 2 |
| Draws | 0 |
| Losses | 2 |
| White | 2 |
| Black | 2 |
| White wins | 2 |
| Black wins | 0 |
| Score | 2 |
| Percent | 50 |
| Dp | 0 |
| AOR | 1473.2 |
| Performance | 1473.2 |
Game statistics ()
| Games | 41 |
| Wins | 20 |
| Draws | 0 |
| Losses | 21 |
| White | 21 |
| Black | 20 |
| White wins | 10 |
| Black wins | 10 |
| Score | 20 |
| Percent | 48.8 |
| Dp | -10.4 |
| AOR | 1282.1 |
| Performance | 1271.7 |
Game statistics (History)
| Games | 131 |
| Wins | 54 |
| Draws | 6 |
| Losses | 71 |
| White | 67 |
| Black | 64 |
| White wins | 33 |
| Black wins | 21 |
| Score | 57 |
| Percent | 43.5 |
| Dp | -55.2 |
| AOR | 1273.1 |
| Performance | 1217.9 |
Rankings (Main)
| National | |
| Overall | 11994 |
| Gender | 2599 |
| Age group | 2127 |
| Gender/Age | 514 |
| Provincial | |
| Overall | 4166 |
| Gender | 985 |
| Age group | 762 |
| Gender/Age | 208 |
| Regional | |
| Overall | 1250 |
| Gender | 297 |
| Age group | 225 |
| Gender/Age | 56 |
Rankings (Standard)
| National | |
| Overall | 11240 |
| Gender | 2707 |
| Age group | 1953 |
| Gender/Age | 502 |
| Provincial | |
| Overall | 3880 |
| Gender | 994 |
| Age group | 714 |
| Gender/Age | 209 |
| Regional | |
| Overall | 1342 |
| Gender | 340 |
| Age group | 243 |
| Gender/Age | 61 |
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 | 4 |
| Score | 2 |
| Percent | 50 |
| Aor | 1473.2 |
| Dp | 0 |
| Prat | 1473.2 |
Performance ()
| Games | 41 |
| Score | 20 |
| Percent | 48.8 |
| Aor | 1282.1 |
| Dp | -10.4 |
| Prat | 1271.7 |
Performance (12 months)
| Games | 49 |
| Score | 22 |
| Percent | 44.9 |
| Aor | 1288.1 |
| Dp | -43.4 |
| Prat | 1244.8 |
Performance (History)
| Games | 131 |
| Score | 57 |
| Percent | 43.5 |
| Aor | 1273.1 |
| Dp | -55.2 |
| Prat | 1217.9 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | De Waal, N (Nadine) | 3 | 2 | 1 | 2024 Tshwane South School District CLOSED Individual Championships (U13 Girls) | 2026 D4 District Individuals (U15 Girls) | Details |
| Overall | 2 | Montsho, R (Reatlegile Motlogelwa Pra) | 2 | 0 | 2 | 2025 Wynie Robbertse Chess Tournament (D) | 2026 Etienne Lewis (U16) | Details |
| Overall | 3 | Pitso, L (Lipalesa) | 2 | 2 | 0 | Kloof Kings and Queens Clash 2026 (First Round) | Kloof Kings and Queens Clash 2026 (Plate) | Details |
| Overall | 4 | Engelbrecht, A (Amber-Lee) | 2 | 0 | 2 | Gauteng Inter-Region at UJ 2024 (U14 Girls) | 2025 Tshwane South School District Individual Finals (D4) (U13 Girls) | Details |
| Overall | 5 | Moorcroft, Z (Zelneri) | 2 | 0 | 2 | Gauteng Inter-Region at UJ 2024 (U14 Girls) | 2025 Mzansi Inter Provincial Team Championships (U16 Girls) | Details |
| Standard | 1 | De Waal, N (Nadine) | 3 | 2 | 1 | 2024 Tshwane South School District CLOSED Individual Championships (U13 Girls) | 2026 D4 District Individuals (U15 Girls) | Details |
| Standard | 2 | Botha, L (Logan) | 2 | 0 | 2 | 2024 Constantiapark Open (D1) | 2025 Etienne Lewis Closed Chess Tournament (U14) | Details |
| Standard | 3 | Montsho, R (Reatlegile Motlogelwa Pra) | 2 | 0 | 2 | 2025 Wynie Robbertse Chess Tournament (D) | 2026 Etienne Lewis (U16) | Details |
| Standard | 4 | Moorcroft, Z (Zelneri) | 2 | 0 | 2 | Gauteng Inter-Region at UJ 2024 (U14 Girls) | 2025 Mzansi Inter Provincial Team Championships (U16 Girls) | Details |
| Standard | 5 | Engelbrecht, A (Amber-Lee) | 2 | 0 | 2 | Gauteng Inter-Region at UJ 2024 (U14 Girls) | 2025 Tshwane South School District Individual Finals (D4) (U13 Girls) | Details |
| Rapid | 1 | Pitso, L (Lipalesa) | 2 | 2 | 0 | Kloof Kings and Queens Clash 2026 (First Round) | Kloof Kings and Queens Clash 2026 (Plate) | Details |