Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Biljon, J (Janina)

Chess SA id

2120139974

FIDE id

Date of birth

2012-10-29 (U14)

Gender

Female

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-08-10

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1289

Item	Main	Standard	Rapid	Blitz
Rating	1242.1	1234.7	1160	1200
Raw rating	1242.1	1234.7	1160	1200
Weighted rating	1214.9	1216.1	1160	1200
Weighted performance	1186.4	1183.4	0	0
Floor	789.3	786.5	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	156.2	157.8	175.5	165.8
Highest rating	1289.3 2025-06-01	1286.5 2025-06-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1289.3 2025-06-01	1286.5 2025-06-01	1200 2019-12-01	1200 2024-03-01
Highest weighted rating	1289.3 2018-10-01	1286.5 2024-08-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1289.3 2025-06-01	1286.5 2024-04-01	1200 2019-12-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1242.1	1234.7	1160	1200
Analysis
Rating	1242.1	1234.7	1160	1200
Raw rating	1242.1	1234.7	1160	1200
Weighted rating	1214.9	1216.1	1160
Weighted performance	1186.4	1183.4	0
K-factor	36	36	36	36
Floor	789.3	786.5	700	700
Max/Min rating change allowed	156.2	157.8	175.5	165.8
Games	0	0	0	0
Score	0	0	0	0
Expected score	0	0	0	0
Score-Expected	0	0	0	0
Temp raw +/-	0	0	0	0
Final raw +/-	0	0	0	0
New raw rating	1242.1	1234.7	1160	1200
New weighted rating	1218.3	1218.2	1160	1200
New weighted performance	1186	1183	0	0
Temp new rating	1242.1	1234.7	1160	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1242.1	1234.7	1160	1200
New K-factor	36	36	36	36
New floor	789.3	786.5	700	700

Item	Main	Standard	Rapid
	0	0	0
	31	31	0
	40	40	0
	0	0	0
	6	0	6
	0	0	0
History	77	71	6

Games since
	Main 71	Standard 71		Rapid 0		Blitz 0
Gender	Female
Age group	U14
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	3702		1212		430
Female	842		268		100
U14	695		223		75
U14 Female	188		60		21
Standard
	RSA		Province		Region
Overall	3654		1294		503
Female	847		287		113
U14	703		240		87
U14 Female	199		64		24
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U14	-1		-1		-1
U14 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U14	-1		-1		-1
U14 Female	-1		-1		-1


	Games	Score	%	Dp	AvgOpp	Performance
Main	0	0	0	0	0	0
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

	Games	Score	%	Dp	AvgOpp	Performance
Main	31	13.5	43.55	-54.8	1289.2	1234.3
Standard	31	13.5	43.55	-54.8	1289.2	1234.3
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	77	32.5	42.21	-66.2	1267.5	1201.3
Standard	71	30.5	42.96	-59.9	1276.2	1216.3
Rapid	6	2	33.33	-141.7	1164.8	1023.1
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1242.1	1234.7	1160	1200
2025-09-01	1242.1	1234.7	1160	1200
2025-08-01	1229.6	1219.8	1160	1200
2025-07-01	1257.8	1253.3	1160	1200
2025-06-01	1289.3	1286.5	1160	1200
2025-05-01	1234.3	1231.5	1160	1200
2025-04-01	1234.3	1231.5	1160	1200
2025-03-01	1234.3	1231.5	1160	1200
2025-02-01	1203.2	1203.8	1160	1200
2025-01-01	1216.5	1221.7	1160	1200
2024-12-01	1172.5	1181	1160	1200
2024-11-01	1125.9	1125.6	1160	1200
2024-10-01	1125.9	1125.6	1160	1200
2024-09-01	1147.2	1152.2	1160	1200
2024-08-01	1200.7	1213	1160	1200
2024-07-01	1200.7	1213	1160	1200
2024-06-01	1200.7	1213	1160	1200
2024-08-01	1205.5	1222.7	1160	1200
2024-04-01	1181.3	1199.3	1160	1200
2024-03-01	1170.7	1193.5	1160	1200
2024-02-01	1170	1200	1160	1200
2024-01-01	1170	1200	1160	1200
2023-12-01	1170	1200	1160	1200
2023-11-01	1170	1200	1160	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Etienne Lewis Closed Chess Tournament (U14)	2025-08-08	2025-08-10	Standard	Tshwane (GTP)	7	7	3	Yes	Analysis
2	2025 Wynie Robbertse Chess Tournament (D)	2025-07-19	2025-07-19	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
3	2025 Elise Steenkamp Open Chess Tournament (Bishop)	2025-06-14	2025-06-15	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
4	2025 Tshwane South School District Individual Finals (D4) (U13 Girls)	2025-05-10	2025-05-10	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
5	Constantiapark Open 2025 (D)	2025-02-15	2025-02-15	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
6	2025 Tshwane Chess OPEN Registration Tournament (B3)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	4	1	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Etienne Lewis Closed Chess Tournament (U14)	2025-08-08	2025-08-10	Standard	Tshwane (GTP)	7	7	3	Yes	Analysis
2	2025 Wynie Robbertse Chess Tournament (D)	2025-07-19	2025-07-19	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
3	2025 Elise Steenkamp Open Chess Tournament (Bishop)	2025-06-14	2025-06-15	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
4	2025 Tshwane South School District Individual Finals (D4) (U13 Girls)	2025-05-10	2025-05-10	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
5	Constantiapark Open 2025 (D)	2025-02-15	2025-02-15	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
6	2025 Tshwane Chess OPEN Registration Tournament (B3)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	4	1	Yes	Analysis
7	Gauteng Inter-Region at UJ 2024 (U14 Girls)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	4	2	Yes	Analysis
8	Lardies Ope 2024 (C)	2024-10-26	2024-10-26	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
9	2024 Etienne Lewis (U14)	2024-08-30	2024-09-01	Standard	Tshwane (GTP)	7	7	2	Yes	Analysis
10	2024 Alekhine Open Chess Tournament (B)	2024-08-09	2024-08-10	Standard	Tshwane (GTP)	5	4	0	Yes	Analysis
11	2024 Tshwane South School District CLOSED Individual Championships (U13 Girls)	2024-05-11	2024-05-11	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
12	2024 Silver Lakes Open Chess Tournament (D3)	2024-04-20	2024-04-20	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
13	2024 Wynie Robbertse Chess Tournament (D2)	2024-03-02	2024-03-02	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
14	2024 Constantiapark Open (D1)	2024-02-17	2024-02-17	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
15	D4 Individuals 2022 (U11 Girls)	2022-04-23	2022-04-23	Rapid	Tshwane (GTP)	7	6	2	Yes	Analysis

#	Games	Start				End
1	5	Tournament Lardies Ope 2024				Tournament Gauteng Inter-Region at UJ 2024
		date 2024-10-26	rnd 3	type Standard	result 1	date 2024-12-07	rnd 3	type Standard	result 1
		Opponent Van Eyssen, S (Sven)				Opponent Moorcroft, Z (Zelneri)
2	4	Tournament 2025 Elise Steenkamp Open Chess Tournament				Tournament 2025 Wynie Robbertse Chess Tournament
		date 2025-06-15	rnd 4	type Standard	result 1	date 2025-07-19	rnd 2	type Standard	result 1
		Opponent Pretorius, C (Cornelia)				Opponent Montsho, R (Reatlegile Motlogelwa Pra)
3	4	Tournament 2024 Silver Lakes Open Chess Tournament				Tournament 2024 Tshwane South School District CLOSED Individual Championships
		date 2024-04-20	rnd 4	type Standard	result 1	date 2024-05-11	rnd 2	type Standard	result 1
		Opponent Meiring, J (Jacobus)				Opponent De Jager, A (Anneke)

#	Games	Start				End
1	5	Tournament Lardies Ope 2024				Tournament Gauteng Inter-Region at UJ 2024
		date 2024-10-26	rnd 3	type Standard	result 1	date 2024-12-07	rnd 3	type Standard	result 1
		Opponent Van Eyssen, S (Sven)				Opponent Moorcroft, Z (Zelneri)
2	4	Tournament 2025 Elise Steenkamp Open Chess Tournament				Tournament 2025 Wynie Robbertse Chess Tournament
		date 2025-06-15	rnd 4	type Standard	result 1	date 2025-07-19	rnd 2	type Standard	result 1
		Opponent Pretorius, C (Cornelia)				Opponent Montsho, R (Reatlegile Motlogelwa Pra)
3	4	Tournament 2024 Silver Lakes Open Chess Tournament				Tournament 2024 Tshwane South School District CLOSED Individual Championships
		date 2024-04-20	rnd 4	type Standard	result 1	date 2024-05-11	rnd 2	type Standard	result 1
		Opponent Meiring, J (Jacobus)				Opponent De Jager, A (Anneke)

#	Games	Start				End
1	1	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 7	type Rapid	result 1	date 2022-04-23	rnd 7	type Rapid	result 1
		Opponent Schutte, J (Jeanri)				Opponent Schutte, J (Jeanri)
2	1	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 5	type Rapid	result 0.5	date 2022-04-23	rnd 5	type Rapid	result 0.5
		Opponent Ottermann, A (Ayla)				Opponent Ottermann, A (Ayla)
3	1	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 3	type Rapid	result 0.5	date 2022-04-23	rnd 3	type Rapid	result 0.5
		Opponent Erasmus, A (Anri)				Opponent Erasmus, A (Anri)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament 2025 Elise Steenkamp Open Chess Tournament				Tournament 2025 Wynie Robbertse Chess Tournament
		date 2025-06-15	rnd 4	type Standard	result 1	date 2025-07-19	rnd 2	type Standard	result 1
		Opponent Pretorius, C (Cornelia)				Opponent Montsho, R (Reatlegile Motlogelwa Pra)
2	4	Tournament 2024 Silver Lakes Open Chess Tournament				Tournament 2024 Tshwane South School District CLOSED Individual Championships
		date 2024-04-20	rnd 4	type Standard	result 1	date 2024-05-11	rnd 2	type Standard	result 1
		Opponent Meiring, J (Jacobus)				Opponent De Jager, A (Anneke)
3	3	Tournament 2025 Tshwane Chess OPEN Registration Tournament				Tournament Constantiapark Open 2025
		date 2025-01-25	rnd 5	type Standard	result 1	date 2025-02-15	rnd 2	type Standard	result 1
		Opponent De Bruin, H (Hanno)				Opponent Ndebele, AT (Akhumzi Thandolwenkosi)

#	Games	Start				End
1	4	Tournament 2025 Elise Steenkamp Open Chess Tournament				Tournament 2025 Wynie Robbertse Chess Tournament
		date 2025-06-15	rnd 4	type Standard	result 1	date 2025-07-19	rnd 2	type Standard	result 1
		Opponent Pretorius, C (Cornelia)				Opponent Montsho, R (Reatlegile Motlogelwa Pra)
2	4	Tournament 2024 Silver Lakes Open Chess Tournament				Tournament 2024 Tshwane South School District CLOSED Individual Championships
		date 2024-04-20	rnd 4	type Standard	result 1	date 2024-05-11	rnd 2	type Standard	result 1
		Opponent Meiring, J (Jacobus)				Opponent De Jager, A (Anneke)
3	3	Tournament 2025 Tshwane Chess OPEN Registration Tournament				Tournament Constantiapark Open 2025
		date 2025-01-25	rnd 5	type Standard	result 1	date 2025-02-15	rnd 2	type Standard	result 1
		Opponent De Bruin, H (Hanno)				Opponent Ndebele, AT (Akhumzi Thandolwenkosi)

#	Games	Start				End
1	1	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 7	type Rapid	result 1	date 2022-04-23	rnd 7	type Rapid	result 1
		Opponent Schutte, J (Jeanri)				Opponent Schutte, J (Jeanri)

No games found.

#	Games	Start				End

Top 10 opponents most often played

#	Opponent	Main			Standard			Rapid			Blitz
		Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp
		Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat
1	Engelbrecht ,A (Amber-Lee)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Engelbrecht ,A (Amber-Lee)	2	1466.8	1041.8	2	1457.1	1041.8	0	0	0	0	0	0
2	De Waal ,N (Nadine)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	De Waal ,N (Nadine)	2	1470.9	1045.9	2	1468.6	1045.9	0	0	0	0	0	0
3	Botha ,L (Logan)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Botha ,L (Logan)	2	1315.4	890.4	2	1316.1	890.4	0	0	0	0	0	0
4	Muller ,M (Mari)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Muller ,M (Mari)	1	1384.8	959.8	1	1384.1	959.8	0	0	0	0	0	0
5	Du Toit ,W (Wilco)	1	1	425	1	1	425	0	0	0	0	0	0
5	Du Toit ,W (Wilco)	1	1321.8	1746.8	1	1310.1	1746.8	0	0	0	0	0	0
6	Westermann ,I (Inge)	1	1	425	1	1	425	0	0	0	0	0	0
6	Westermann ,I (Inge)	1	1206.1	1631.1	1	1199.8	1631.1	0	0	0	0	0	0
7	Buchner ,E (Emil)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Buchner ,E (Emil)	1	1423.2	998.2	1	1415.7	998.2	0	0	0	0	0	0
8	Rahlaga ,K (Kaelo Alupheli)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Rahlaga ,K (Kaelo Alupheli)	1	1311.7	886.7	1	1303.2	886.7	0	0	0	0	0	0
9	Karsten ,D (Daniel)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Karsten ,D (Daniel)	1	1266.3	841.3	1	1264	841.3	0	0	0	0	0	0
10	Makunike ,J (James)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Makunike ,J (James)	1	1290	865	1	1290	865	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Van Biljon, J (Janina)

Ratings

Game statistics

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms