Chess South Africa Ratings Database

PLAYER PAGE

Personal

Onyekwere, V (Vivian)

Chess SA id

2090157258

FIDE id

Date of birth

2009-11-27 (U18)

Gender

Female

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-20

Personal details last changed

1900-01-01

Junior GPX Games

32.4

Junior GPX Points

1248.2

Item	Main	Standard	Rapid	Blitz
Rating	1245.2	1240.6	1188.8	1200
Raw rating	1245.2	1240.6	1188.8	1200
Weighted rating	1201.9	1216	1166.7	1200
Weighted performance	1218.6	1188	1037.4	0
Floor	751.8	743.8	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	155.5	156.5	168.5	165.8
Highest rating	1251.8 2025-09-01	1246.2 2023-08-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1251.8 2025-09-01	1243.8 2025-09-01	1200 2019-12-01	1200 2024-02-01
Highest weighted rating	1244.4 2018-10-01	1243.4 2024-06-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1228.8 2025-09-01	1246.2 2023-08-01	1200 2019-12-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1245.2	1240.6	1188.8	1200
Analysis
Rating	1245.2	1240.6	1188.8	1200
Raw rating	1245.2	1240.6	1188.8	1200
Weighted rating	1201.9	1216	1166.7
Weighted performance	1218.6	1188	1037.4
K-factor	36	36	36	36
Floor	751.8	743.8	700	700
Max/Min rating change allowed	155.5	156.5	168.5	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	1245.2	1240.6	1188.8	1200
New weighted rating	1206.4	1218.3	1169.3	1200
New weighted performance	1218.2	1187.6	1037	0
Temp new rating	1245.2	1240.6	1188.8	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1245.2	1240.6	1188.8	1200
New K-factor	36	36	36	36
New floor	751.8	743.8	700	700

Item	Main	Standard	Rapid
	0	0	0
	27	22	5
	19	10	9
	19	5	14
	0	0	0
	0	0	0
History	65	37	28

Games since
	Main 51	Standard 32		Rapid 19		Blitz 0
Gender	Female
Age group	U18
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	3680		1203		197
Female	835		266		52
U18	550		189		30
U18 Female	99		35		8
Standard
	RSA		Province		Region
Overall	3605		1277		174
Female	827		283		41
U18	569		209		26
U18 Female	98		36		6
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 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	27	12	44.44	-47.2	1336.2	1289
Standard	22	9.5	43.18	-58	1339.5	1281.5
Rapid	5	2.5	50	0	1322	1322
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	65	27.5	42.31	-65.4	1280.3	1214.9
Standard	37	15	40.54	-80.4	1323.5	1243.1
Rapid	28	12.5	44.64	-45.5	1223.2	1177.6
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1245.2	1240.6	1188.8	1200
2025-09-01	1251.8	1243.8	1188.8	1200
2025-08-01	1244.4	1243.4	1188.8	1200
2025-07-01	1244.4	1243.4	1188.8	1200
2025-06-01	1244.4	1243.4	1188.8	1200
2025-05-01	1206.9	1201.7	1188.8	1200
2025-04-01	1189.2	1201.7	1176.3	1200
2025-03-01	1189.2	1201.7	1176.3	1200
2025-02-01	1189.2	1201.5	1176.3	1200
2025-01-01	1189.2	1197.4	1176.3	1200
2024-12-01	1185.1	1194.9	1176.3	1200
2024-11-01	1185.1	1194.9	1176.3	1200
2024-10-01	1138.1	1194.9	1096.4	1200
2024-09-01	1138.1	1194.9	1096.4	1200
2024-08-01	1138.1	1194.9	1096.4	1200
2024-07-01	1138.1	1194.9	1096.4	1200
2024-06-01	1173.4	1209.7	1143.9	1200
2024-08-01	1173.4	1209.7	1143.9	1200
2024-04-01	1173.4	1209.7	1143.9	1200
2024-03-01	1173.4	1209.7	1143.9	1200
2024-02-01	1173.4	1209.7	1143.9	1200
2024-01-01	1173.4	1209.7	1143.9	1200
2023-12-01	1173.4	1209.7	1143.9	1200
2023-11-01	1201	1209.7	1184.9	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	St Peters College Sports & Cultural Festival 2025	2025-09-19	2025-09-20	Standard	Johannesburg Metro (GJM)	6	4	2	Yes	Analysis
2	Tshwane Chess Club Clash 2025 (Ladies)	2025-09-13	2025-09-13	Standard	Tshwane (GTP)	5	4	1	Yes	Analysis
3	Ekurhuleni Trials 2025 (C)	2025-07-26	2025-07-26	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
4	Moja Chess Extravaganza 2025 (Ladies)	2025-04-26	2025-05-01	Standard	Johannesburg Metro (GJM)	9	9	4.5	Yes	Analysis
5	Chess Molecules Open Tournament 2025 (B)	2025-04-19	2025-04-19	Rapid	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	St Peters College Sports & Cultural Festival 2025	2025-09-19	2025-09-20	Standard	Johannesburg Metro (GJM)	6	4	2	Yes	Analysis
2	Tshwane Chess Club Clash 2025 (Ladies)	2025-09-13	2025-09-13	Standard	Tshwane (GTP)	5	4	1	Yes	Analysis
3	Ekurhuleni Trials 2025 (C)	2025-07-26	2025-07-26	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
4	Moja Chess Extravaganza 2025 (Ladies)	2025-04-26	2025-05-01	Standard	Johannesburg Metro (GJM)	9	9	4.5	Yes	Analysis
5	Chess Molecules Open Tournament 2025 (B)	2025-04-19	2025-04-19	Rapid	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
6	Gauteng Inter-Region at UJ 2024 (U18 Candidates)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	1.5	Yes	Analysis
7	Gauteng Top Schools 2024 (U15 Girls)	2024-10-05	2024-10-05	Rapid	Ekurhuleni (GE)	5	5	4	Yes	Analysis
8	Chess Molecules Open Chess Tournament 2024 (High School Girls)	2024-06-15	2024-06-15	Rapid	Johannesburg Metro (GJM)	5	4	0.5	Yes	Analysis
9	Ekurhuleni Trails 1 2024 (U16)	2024-06-01	2024-06-01	Standard	Ekurhuleni (GE)	5	5	1.5	Yes	Analysis
10	Chess is My Lifestyle 2023 (High School Girls)	2023-12-09	2023-12-09	Rapid	Johannesburg Metro (GJM)	5	5	1.5	Yes	Analysis
11	Chess Molecules Rapid 2023 (High School Girls)	2023-09-23	2023-09-23	Rapid	Ekurhuleni (GE)	5	4	2	Yes	Analysis
12	2023 Gauteng Top Schools (U15 Girls)	2023-08-19	2023-08-19	Standard	West Rand (GWR)	5	5	2.5	Yes	Analysis
13	Chess Molecules 16 June Tournament 2023 (High School Girls)	2023-06-16	2023-06-16	Rapid	Ekurhuleni (GE)	5	5	2	Yes	Analysis

#	Games	Start				End
1	4	Tournament Moja Chess Extravaganza 2025				Tournament Moja Chess Extravaganza 2025
		date 2025-04-29	rnd 6	type Standard	result 1	date 2025-05-01	rnd 9	type Standard	result 1
		Opponent Pathan, Z (Zaarah)				Opponent Kekana, L (Letsatsi)
2	4	Tournament Chess Molecules Open Chess Tournament 2024				Tournament Gauteng Top Schools 2024
		date 2024-06-15	rnd 5	type Rapid	result 0.5	date 2024-10-05	rnd 3	type Rapid	result 1
		Opponent Kiruri, C (Cynthia)				Opponent Dube, M (Minenhle)
3	3	Tournament Chess Molecules 16 June Tournament 2023				Tournament 2023 Gauteng Top Schools
		date 2023-06-16	rnd 5	type Rapid	result 1	date 2023-08-19	rnd 2	type Standard	result 1
		Opponent Marongwe, A (Anotida)				Opponent Rammoneng, K (Kabelo)

#	Games	Start				End
1	4	Tournament Moja Chess Extravaganza 2025				Tournament Moja Chess Extravaganza 2025
		date 2025-04-29	rnd 6	type Standard	result 1	date 2025-05-01	rnd 9	type Standard	result 1
		Opponent Pathan, Z (Zaarah)				Opponent Kekana, L (Letsatsi)
2	2	Tournament Ekurhuleni Trials 2025				Tournament Ekurhuleni Trials 2025
		date 2025-07-26	rnd 2	type Standard	result 1	date 2025-07-26	rnd 3	type Standard	result 1
		Opponent Makomva, K (Kyla)				Opponent Nhuvunga, J (Jededia Trinity)
3	2	Tournament Gauteng Inter-Region at UJ 2024				Tournament Gauteng Inter-Region at UJ 2024
		date 2024-12-08	rnd 4	type Standard	result 0.5	date 2024-12-08	rnd 5	type Standard	result 1
		Opponent Acker, S (Steven)				Opponent Venter , J (James)

#	Games	Start				End
1	4	Tournament Chess Molecules Open Chess Tournament 2024				Tournament Gauteng Top Schools 2024
		date 2024-06-15	rnd 5	type Rapid	result 0.5	date 2024-10-05	rnd 3	type Rapid	result 1
		Opponent Kiruri, C (Cynthia)				Opponent Dube, M (Minenhle)
2	2	Tournament Chess Molecules Open Tournament 2025				Tournament Chess Molecules Open Tournament 2025
		date 2025-04-19	rnd 4	type Rapid	result 1	date 2025-04-19	rnd 5	type Rapid	result 0.5
		Opponent Mbele, L (Londeka Zwelihle)				Opponent Ngwangwa, N (Nonhlanhla)
3	2	Tournament Chess is My Lifestyle 2023				Tournament Chess is My Lifestyle 2023
		date 2023-12-09	rnd 3	type Rapid	result 0.5	date 2023-12-09	rnd 4	type Rapid	result 1
		Opponent Kiruri, C (Cynthia)				Opponent Obioha, C (Chiwendu)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Gauteng Top Schools 2024				Tournament Gauteng Top Schools 2024
		date 2024-10-05	rnd 1	type Rapid	result 1	date 2024-10-05	rnd 3	type Rapid	result 1
		Opponent Khensani, F (Fulane)				Opponent Dube, M (Minenhle)
2	3	Tournament Chess Molecules 16 June Tournament 2023				Tournament 2023 Gauteng Top Schools
		date 2023-06-16	rnd 5	type Rapid	result 1	date 2023-08-19	rnd 2	type Standard	result 1
		Opponent Marongwe, A (Anotida)				Opponent Rammoneng, K (Kabelo)
3	2	Tournament Ekurhuleni Trials 2025				Tournament Ekurhuleni Trials 2025
		date 2025-07-26	rnd 2	type Standard	result 1	date 2025-07-26	rnd 3	type Standard	result 1
		Opponent Makomva, K (Kyla)				Opponent Nhuvunga, J (Jededia Trinity)

#	Games	Start				End
1	2	Tournament Ekurhuleni Trials 2025				Tournament Ekurhuleni Trials 2025
		date 2025-07-26	rnd 2	type Standard	result 1	date 2025-07-26	rnd 3	type Standard	result 1
		Opponent Makomva, K (Kyla)				Opponent Nhuvunga, J (Jededia Trinity)
2	2	Tournament Moja Chess Extravaganza 2025				Tournament Moja Chess Extravaganza 2025
		date 2025-04-30	rnd 8	type Standard	result 1	date 2025-05-01	rnd 9	type Standard	result 1
		Opponent Conradie, I (Ingrid)				Opponent Kekana, L (Letsatsi)
3	2	Tournament 2023 Gauteng Top Schools				Tournament 2023 Gauteng Top Schools
		date 2023-08-19	rnd 1	type Standard	result 1	date 2023-08-19	rnd 2	type Standard	result 1
		Opponent Sibiya, T (Thandlowethu)				Opponent Rammoneng, K (Kabelo)

#	Games	Start				End
1	3	Tournament Gauteng Top Schools 2024				Tournament Gauteng Top Schools 2024
		date 2024-10-05	rnd 1	type Rapid	result 1	date 2024-10-05	rnd 3	type Rapid	result 1
		Opponent Khensani, F (Fulane)				Opponent Dube, M (Minenhle)
2	2	Tournament Chess Molecules 16 June Tournament 2023				Tournament Chess Molecules Rapid 2023
		date 2023-06-16	rnd 5	type Rapid	result 1	date 2023-09-23	rnd 1	type Rapid	result 1
		Opponent Marongwe, A (Anotida)				Opponent Kekane, T (Tshireketso)
3	1	Tournament Chess Molecules Open Tournament 2025				Tournament Chess Molecules Open Tournament 2025
		date 2025-04-19	rnd 4	type Rapid	result 1	date 2025-04-19	rnd 4	type Rapid	result 1
		Opponent Mbele, L (Londeka Zwelihle)				Opponent Mbele, L (Londeka Zwelihle)

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	Kekane ,T (Tshireketso)	2	2	425	1	1	425	1	1	425	0	0	0
1	Kekane ,T (Tshireketso)	2	1151	1576	1	1158.8	1576	1	1200	1576	0	0	0
2	Hunkin ,S (Sarah)	2	1	0	1	1	425	1	0	-425	0	0	0
2	Hunkin ,S (Sarah)	2	1200	1200	1	1200	1625	1	1200	775	0	0	0
3	Kiruri ,C (Cynthia)	2	1	0	0	0	0	2	1	0	0	0	0
3	Kiruri ,C (Cynthia)	2	1149	1149	0	0	0	2	1159.2	1149	0	0	0
4	Bennett ,J (Jemmah)	2	0	-425	0	0	0	2	0	-425	0	0	0
4	Bennett ,J (Jemmah)	2	1247.8	822.8	0	0	0	2	1224.9	822.8	0	0	0
5	Yalcoue ,Z (Zenebou)	2	1	0	0	0	0	2	1	0	0	0	0
5	Yalcoue ,Z (Zenebou)	2	1093.1	1093.1	0	0	0	2	1077.6	1093.1	0	0	0
6	Manto ,M (Martha)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
6	Manto ,M (Martha)	1	1395.9	1395.9	1	1391.2	1395.9	0	0	0	0	0	0
7	Kekana ,L (Letsatsi)	1	1	425	1	1	425	0	0	0	0	0	0
7	Kekana ,L (Letsatsi)	1	1184.4	1609.4	1	1184.4	1609.4	0	0	0	0	0	0
8	Moussa ,M (Mohamed)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Moussa ,M (Mohamed)	1	1200	775	1	1200	775	0	0	0	0	0	0
9	Sambo ,L (Loago Firtunate)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Sambo ,L (Loago Firtunate)	1	1417.2	992.2	1	1444.4	992.2	0	0	0	0	0	0
10	Acker ,S (Steven)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
10	Acker ,S (Steven)	1	1372.2	1372.2	1	1376.2	1372.2	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Onyekwere, V (Vivian)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms