Chess South Africa Ratings Database

PLAYER PAGE

Personal

Pretorius, J (Judith)

Chess SA id

2130154012

FIDE id

Date of birth

2013-03-11 (U14)

Gender

Female

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-21

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1064.7

Item	Main	Standard	Rapid	Blitz
Rating	1195.1	1179.3	1261.9	1200
Raw rating	1178.1	1147.4	1261.9	1200
Weighted rating	1195.1	1179.3	1247.2	1200
Weighted performance	1060.7	1022.6	0	0
Floor	739.1	723	788.6	700
K-factor	36	36	36	36
Min/Max rating change allowed	171.1	178.7	151.8	165.8
Highest rating	1239.1 2025-09-01	1223 2025-09-01	1422.8 2024-04-01	1200 2018-10-01
Highest raw rating	1239.1 2025-09-01	1223 2025-09-01	1288.6 2024-05-01	1200 2024-02-01
Highest weighted rating	1217.4 2018-10-01	1200 2018-10-01	1288.6 2024-10-01	1200 2018-10-01
Highest weighted performance	1222.3 2024-05-01	1200 2019-12-01	1422.8 2024-04-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.8	-1.8	0	0
New rating	1194.2	1177.5	1261.9	1200
Analysis
Rating	1195.1	1179.3	1261.9	1200
Raw rating	1178.1	1147.4	1261.9	1200
Weighted rating	1195.1	1179.3	1247.2
Weighted performance	1060.7	1022.6	0
K-factor	36	36	36	36
Floor	739.1	723	788.6	700
Max/Min rating change allowed	171.1	178.7	151.8	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	1178.1	1147.4	1261.9	1200
New weighted rating	1194.2	1177.5	1248.8	1200
New weighted performance	1054.2	1016.3	0	0
Temp new rating	1194.2	1177.5	1261.9	1200
Temp new rating +/-	-0.8	-1.8	0	0
Final new rating +/-	-0.8	-1.8	0	0
New rating	1194.2	1177.5	1261.9	1200
New K-factor	36	36	36	36
New floor	739.1	723	788.6	700

Item	Main	Standard	Rapid
	0	0	0
	22	14	8
	36	20	16
	19	19	0
	0	0	0
	0	0	0
History	77	53	24

Games since
	Main 58	Standard 34		Rapid 24		Blitz 0
Gender	Female
Age group	U14
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	4168		1361		233
Female	1012		326		67
U14	816		268		46
U14 Female	238		82		17
Standard
	RSA		Province		Region
Overall	4216		1493		212
Female	1043		351		52
U14	835		295		41
U14 Female	253		90		12
Rapid
	RSA		Province		Region
Overall	1286		232		72
Female	231		42		27
U14	289		45		20
U14 Female	75		16		11
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	22	9	40.91	-77.3	1230.9	1153.6
Standard	14	4	28.57	-182.1	1219.4	1037.2
Rapid	8	5	62.5	106.2	1251	1357.2
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	77	35.5	46.1	-33.1	1204.3	1171.2
Standard	53	21.5	40.57	-80.2	1203.7	1123.5
Rapid	24	14	58.33	70.8	1205.5	1276.4
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1178.1	1147.4	1261.9	1200
2025-09-30	1178.1	1147.4	1261.9	1200
2025-09-01	1239.1	1223	1261.9	1200
2025-08-01	1191.7	1177.8	1254.5	1200
2025-07-01	1188.6	1173.1	1254.5	1200
2025-06-01	1195.4	1197.9	1237.5	1200
2025-05-01	1195.4	1197.9	1236.7	1200
2025-04-01	1195.4	1197.9	1236	1200
2025-03-01	1195.4	1197.9	1235	1200
2025-02-01	1195.4	1197.9	1233.2	1200
2025-01-01	1195.4	1197.9	1219.5	1200
2024-12-01	1195.4	1197.9	1219.5	1200
2024-11-01	1195.4	1197.9	1219.5	1200
2024-10-01	1195.4	1197.9	1219.5	1200
2024-09-01	1217.4	1162.3	1288.6	1200
2024-08-01	1217.4	1162.3	1288.6	1200
2024-07-01	1217.4	1162.3	1288.6	1200
2024-09-01	1202.5	1129.5	1288.6	1200
2024-05-01	1202.5	1129.5	1288.6	1200
2024-04-01	1159.1	1129.5	1220.2	1200
2024-03-01	1139	1129.5	1200	1200
2024-02-01	1139	1129.5	1200	1200
2024-01-01	1149.5	1141	1200	1200
2023-12-01	1149.5	1141	1200	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	Ekurhuleni Trial 4 2025 (E)	2025-09-21	2025-09-21	Standard	Ekurhuleni (GE)	5	5	0.5	Yes	Analysis
2	Ekurhuleni North Schools Teams 2025 (U13 Open)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	4	3	Yes	Analysis
3	Kempton Park Team Clusters LS 2025 (U13)	2025-07-26	2025-07-26	Rapid	Ekurhuleni (GE)	5	3	2	Yes	Analysis
4	Ekurhuleni Trial 2 2025 (E)	2025-06-21	2025-06-21	Standard	Ekurhuleni (GE)	5	5	0.5	Yes	Analysis
5	Kemptonpark School Cluster 2025 (U13 Girls)	2025-06-07	2025-06-07	Rapid	Ekurhuleni (GE)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Ekurhuleni Trial 4 2025 (E)	2025-09-21	2025-09-21	Standard	Ekurhuleni (GE)	5	5	0.5	Yes	Analysis
2	Ekurhuleni North Schools Teams 2025 (U13 Open)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	4	3	Yes	Analysis
3	Kempton Park Team Clusters LS 2025 (U13)	2025-07-26	2025-07-26	Rapid	Ekurhuleni (GE)	5	3	2	Yes	Analysis
4	Ekurhuleni Trial 2 2025 (E)	2025-06-21	2025-06-21	Standard	Ekurhuleni (GE)	5	5	0.5	Yes	Analysis
5	Kemptonpark School Cluster 2025 (U13 Girls)	2025-06-07	2025-06-07	Rapid	Ekurhuleni (GE)	5	5	3	Yes	Analysis
6	Ekurhuleni Closed 2024 (U12)	2024-09-21	2024-09-21	Standard	Ekurhuleni (GE)	5	5	1.5	Yes	Analysis
7	Ekurhuleni North Schools Finals - Teams 2024 (U13 Girls)	2024-08-02	2024-08-02	Rapid	Ekurhuleni (GE)	5	5	1	Yes	Analysis
8	Ekurhuleni North Schools Finals - Teams 2024 (U11 Open)	2024-08-03	2024-08-03	Standard	Ekurhuleni (GE)	5	5	3.5	Yes	Analysis
9	Ekurhuleni North Primary Schools District Individual Finals 2024 (U11 Girls)	2024-05-11	2024-05-11	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
10	Kempton Park Cluster Teams League 2024 (U13 Girls)	2024-04-13	2024-04-13	Rapid	Ekurhuleni (GE)	6	6	5	Yes	Analysis
11	Kempton Park Cluster Individuals 2024 (U11 Girls)	2024-03-02	2024-03-02	Rapid	Ekurhuleni (GE)	5	5	3	Yes	Analysis
12	2024 Gauteng Inter-Region Chess Championship (U12 Girls B)	2024-01-13	2024-01-14	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
13	2023 Ekurhuleni North District Schools Finals (U11)	2023-07-29	2023-07-29	Standard	Ekurhuleni (GE)	5	1	0	Yes	Analysis
14	2023 Ekurhuleni North District Schools Finals (U11 Reserves)	2023-07-29	2023-07-29	Standard	Ekurhuleni (GE)	5	4	2.5	Yes	Analysis
15	Ekurhuleni Chess Trial 3 2023 (U12)	2023-06-17	2023-06-17	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
16	Ekurhuleni North Schools Individual Finals 2023 (U11 Girls)	2023-05-12	2023-05-12	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
17	Ekurhuleni Trials 2 2023 (U12)	2023-04-22	2023-04-22	Standard	Ekurhuleni (GE)	5	4	0	Yes	Analysis

#	Games	Start				End
1	5	Tournament 2024 Gauteng Inter-Region Chess Championship				Tournament Kempton Park Cluster Individuals 2024
		date 2024-01-14	rnd 4	type Standard	result 0.5	date 2024-03-02	rnd 3	type Rapid	result 1
		Opponent Loubser, L (Lara)				Opponent Labuschagne, A (Anandi)
2	4	Tournament Kempton Park Cluster Teams League 2024				Tournament Kempton Park Cluster Teams League 2024
		date 2024-04-13	rnd 3	type Rapid	result 1	date 2024-04-13	rnd 6	type Rapid	result 1
		Opponent Van Niekerk, N (Nina)				Opponent Van Niekerk, N (Nina)
3	3	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 1	type Standard	result 1	date 2025-08-16	rnd 4	type Standard	result 1
		Opponent Kanji, T (Tahil)				Opponent Anyanwu, P (Prince)

#	Games	Start				End
1	3	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 1	type Standard	result 1	date 2025-08-16	rnd 4	type Standard	result 1
		Opponent Kanji, T (Tahil)				Opponent Anyanwu, P (Prince)
2	3	Tournament Ekurhuleni North Schools Finals - Teams 2024				Tournament Ekurhuleni North Schools Finals - Teams 2024
		date 2024-08-03	rnd 3	type Standard	result 1	date 2024-08-03	rnd 5	type Standard	result 1
		Opponent Miya, B (Banele)				Opponent Kabanyane, R (Reabetswe)
3	3	Tournament Ekurhuleni North Primary Schools District Individual Finals 2024				Tournament Ekurhuleni North Schools Finals - Teams 2024
		date 2024-05-11	rnd 4	type Standard	result 1	date 2024-08-03	rnd 1	type Standard	result 1
		Opponent Rabotutu, R (Rorisang)				Opponent Dube, C (Colben)

#	Games	Start				End
1	4	Tournament Kempton Park Cluster Teams League 2024				Tournament Kempton Park Cluster Teams League 2024
		date 2024-04-13	rnd 3	type Rapid	result 1	date 2024-04-13	rnd 6	type Rapid	result 1
		Opponent Van Niekerk, N (Nina)				Opponent Van Niekerk, N (Nina)
2	3	Tournament Kempton Park Cluster Individuals 2024				Tournament Kempton Park Cluster Individuals 2024
		date 2024-03-02	rnd 1	type Rapid	result 1	date 2024-03-02	rnd 3	type Rapid	result 1
		Opponent Shunmugam, S (Siana)				Opponent Labuschagne, A (Anandi)
3	2	Tournament Kempton Park Team Clusters LS 2025				Tournament Kempton Park Team Clusters LS 2025
		date 2025-07-26	rnd 1	type Rapid	result 1	date 2025-07-26	rnd 2	type Rapid	result 1
		Opponent Mwembe, R (Rachel)				Opponent Van Oudtshoorn, A (Ava)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Kempton Park Cluster Teams League 2024				Tournament Kempton Park Cluster Teams League 2024
		date 2024-04-13	rnd 3	type Rapid	result 1	date 2024-04-13	rnd 6	type Rapid	result 1
		Opponent Van Niekerk, N (Nina)				Opponent Van Niekerk, N (Nina)
2	4	Tournament 2024 Gauteng Inter-Region Chess Championship				Tournament Kempton Park Cluster Individuals 2024
		date 2024-01-14	rnd 5	type Standard	result 1	date 2024-03-02	rnd 3	type Rapid	result 1
		Opponent Scholtz, M (Mia-Mari)				Opponent Labuschagne, A (Anandi)
3	3	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 1	type Standard	result 1	date 2025-08-16	rnd 4	type Standard	result 1
		Opponent Kanji, T (Tahil)				Opponent Anyanwu, P (Prince)

#	Games	Start				End
1	3	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 1	type Standard	result 1	date 2025-08-16	rnd 4	type Standard	result 1
		Opponent Kanji, T (Tahil)				Opponent Anyanwu, P (Prince)
2	3	Tournament Ekurhuleni North Primary Schools District Individual Finals 2024				Tournament Ekurhuleni North Schools Finals - Teams 2024
		date 2024-05-11	rnd 4	type Standard	result 1	date 2024-08-03	rnd 1	type Standard	result 1
		Opponent Rabotutu, R (Rorisang)				Opponent Dube, C (Colben)
3	2	Tournament Ekurhuleni Chess Trial 3 2023				Tournament 2023 Ekurhuleni North District Schools Finals
		date 2023-06-17	rnd 5	type Standard	result 1	date 2023-07-29	rnd 1	type Standard	result 1
		Opponent Van Den Berg, L (Landon)				Opponent Van Den Berg, L (Landon)

#	Games	Start				End
1	4	Tournament Kempton Park Cluster Teams League 2024				Tournament Kempton Park Cluster Teams League 2024
		date 2024-04-13	rnd 3	type Rapid	result 1	date 2024-04-13	rnd 6	type Rapid	result 1
		Opponent Van Niekerk, N (Nina)				Opponent Van Niekerk, N (Nina)
2	3	Tournament Kempton Park Cluster Individuals 2024				Tournament Kempton Park Cluster Individuals 2024
		date 2024-03-02	rnd 1	type Rapid	result 1	date 2024-03-02	rnd 3	type Rapid	result 1
		Opponent Shunmugam, S (Siana)				Opponent Labuschagne, A (Anandi)
3	2	Tournament Kempton Park Team Clusters LS 2025				Tournament Kempton Park Team Clusters LS 2025
		date 2025-07-26	rnd 1	type Rapid	result 1	date 2025-07-26	rnd 2	type Rapid	result 1
		Opponent Mwembe, R (Rachel)				Opponent Van Oudtshoorn, A (Ava)

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	Janse Van Vuuren ,E (Estiaan)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
1	Janse Van Vuuren ,E (Estiaan)	3	995.3	853.6	3	976.8	853.6	0	0	0	0	0	0
2	Van Wyk ,J (Jamanique)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
2	Van Wyk ,J (Jamanique)	3	1202.9	1061.2	3	1172.7	1061.2	0	0	0	0	0	0
3	Leimecke ,M (Maya)	3	1	-141.7	0	0	0	3	1	-141.7	0	0	0
3	Leimecke ,M (Maya)	3	1219.9	1078.2	0	0	0	3	1213.2	1078.2	0	0	0
4	Van Den Berg ,L (Landon)	2	2	425	2	2	425	0	0	0	0	0	0
4	Van Den Berg ,L (Landon)	2	1090.9	1515.9	2	1087.1	1515.9	0	0	0	0	0	0
5	Terwin ,J (Jordin)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Terwin ,J (Jordin)	2	1327.5	902.5	2	1324.2	902.5	0	0	0	0	0	0
6	Botha ,R (Rochelle)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Botha ,R (Rochelle)	2	1213.5	788.5	2	1214.9	788.5	0	0	0	0	0	0
7	Chisango ,R (Ryan)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	Chisango ,R (Ryan)	2	1229.3	804.3	2	1189.6	804.3	0	0	0	0	0	0
8	Mpye ,K (Karabo)	2	0	-425	2	0	-425	0	0	0	0	0	0
8	Mpye ,K (Karabo)	2	1235.5	810.5	2	1227.8	810.5	0	0	0	0	0	0
9	Naude ,J (Juliette)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
9	Naude ,J (Juliette)	2	1133.6	1346.1	2	1127.4	1346.1	0	0	0	0	0	0
10	Labuschagne ,A (Anandi)	2	1.5	212.5	1	0.5	0	1	1	425	0	0	0
10	Labuschagne ,A (Anandi)	2	1134.4	1346.9	1	1099.6	1134.4	1	1218.4	1559.4	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Pretorius, J (Judith)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms