Chess South Africa Ratings Database

PLAYER PAGE

Personal

Pieterse, J (Jay-Leigh)

Chess SA id

2100151350

FIDE id

Date of birth

2010-05-21 (U16)

Gender

Female

Region

Overberg (WOS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-07

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1153.9

Item	Main	Standard	Rapid	Blitz
Rating	1146.3	1130.9	1189	1200
Raw rating	1146.3	1130.9	1189	1200
Weighted rating	1128.9	1101	1178	1200
Weighted performance	1095.6	1083.6	1001	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	179	183	168.4	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2019-12-01	1200 2019-12-01	1200 2019-12-01	1200 2024-03-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2019-12-01	1200 2019-12-01	1200 2019-12-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1146.3	1130.9	1189	1200
Analysis
Rating	1146.3	1130.9	1189	1200
Raw rating	1146.3	1130.9	1189	1200
Weighted rating	1128.9	1101	1178
Weighted performance	1095.6	1083.6	1001
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	179	183	168.4	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	1146.3	1130.9	1189	1200
New weighted rating	1132.2	1105.4	1179.3	1200
New weighted performance	1088.9	1076.9	994.2	0
Temp new rating	1146.3	1130.9	1189	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1146.3	1130.9	1189	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	23	17	6
	35	19	16
	20	14	6
	0	0	0
	0	0	0
History	78	50	28

Games since
	Main 58	Standard 36		Rapid 22		Blitz 0
Gender	Female
Age group	U16
Region	Overberg (WOS)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	4377		1479		144
Female	1097		443		59
U16	692		241		21
U16 Female	216		88		12
Standard
	RSA		Province		Region
Overall	4389		1237		85
Female	1116		401		32
U16	704		217		16
U16 Female	211		81		10
Rapid
	RSA		Province		Region
Overall	1726		853		128
Female	400		213		45
U16	286		135		22
U16 Female	71		36		11
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 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	23	9	39.13	-92.4	1293.1	1200.7
Standard	17	5.5	32.35	-150	1316.5	1166.5
Rapid	6	3.5	58.33	70.8	1226.8	1297.6
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	78	27	34.62	-130.8	1234.4	1103.6
Standard	50	14	28	-187	1246.6	1059.6
Rapid	28	13	46.43	-30.4	1212.7	1182.3
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1146.3	1130.9	1189	1200
2025-09-30	1146.3	1130.9	1189	1200
2025-09-01	1147.8	1125.1	1189	1200
2025-08-01	1170	1153.2	1189	1200
2025-07-01	1170	1153.2	1189	1200
2025-06-01	1170	1153.2	1189	1200
2025-05-01	1170	1153.2	1189	1200
2025-04-01	1148.1	1102.9	1189	1200
2025-03-01	1128.7	1070	1189	1200
2025-02-01	1100.4	1070	1160.1	1200
2025-01-01	1100.4	1070	1141.6	1200
2024-12-01	1100.4	1070	1141.6	1200
2024-11-01	1100.4	1070	1141.6	1200
2024-10-01	1100.4	1070	1141.6	1200
2024-09-01	1114.8	1066.4	1189.6	1200
2024-08-01	1114.8	1066.4	1189.6	1200
2024-07-01	1083.9	1021.2	1189.6	1200
2024-09-01	1047.5	1021.2	1175.2	1200
2024-05-01	1047.5	1021.2	1175.2	1200
2024-04-01	1047.5	1021.2	1175.2	1200
2024-03-01	1060.8	1020.8	1175.2	1200
2024-02-01	1038.6	1020.8	1154.4	1200
2024-01-01	1038.6	1020.8	1154.4	1200
2023-12-01	1038.6	1020.8	1154.4	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	Western Cape Schools - Top Schools 2025 (U15 Girls)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	5	4	1	Yes	Analysis
2	Overberg Top Schools 2025 (U15-U19 Girls)	2025-08-02	2025-08-02	Standard	Overberg (WOS)	5	4	0.5	Yes	Analysis
3	Western Cape Schools Individual Championship 2025 (U15 Girls)	2025-04-26	2025-04-27	Standard	West Coast (WCU)	6	5	2	Yes	Analysis
4	Overberg Schools - HS Closed 2025 (U15 Girls)	2025-03-22	2025-03-22	Standard	Overberg (WOS)	5	4	2	Yes	Analysis
5	Overberg Schools - HS Trials 2025 (U15 Girls)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	3.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Western Cape Schools - Top Schools 2025 (U15 Girls)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	5	4	1	Yes	Analysis
2	Overberg Top Schools 2025 (U15-U19 Girls)	2025-08-02	2025-08-02	Standard	Overberg (WOS)	5	4	0.5	Yes	Analysis
3	Western Cape Schools Individual Championship 2025 (U15 Girls)	2025-04-26	2025-04-27	Standard	West Coast (WCU)	6	5	2	Yes	Analysis
4	Overberg Schools - HS Closed 2025 (U15 Girls)	2025-03-22	2025-03-22	Standard	Overberg (WOS)	5	4	2	Yes	Analysis
5	Overberg Schools - HS Trials 2025 (U15 Girls)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	3.5	Yes	Analysis
6	Kingsway Chess Open 2024 (U14)	2024-09-14	2024-09-14	Rapid	Overberg (WOS)	6	5	1.5	Yes	Analysis
7	Western Cape Top Schools Championship 2024 (U15 Girls)	2024-08-30	2024-09-01	Standard	Eden (WEG)	6	5	2	Yes	Analysis
8	Overberg Schools - Top Schools 2024 (U9-U15 Girls)	2024-07-27	2024-07-27	Standard	Overberg (WOS)	5	4	2	Yes	Analysis
9	Western Cape - Brian Raubenheimer Development Tournament 2024 (U15 Girls)	2024-06-08	2024-06-08	Rapid	Overberg (WOS)	6	6	3.5	Yes	Analysis
10	Western Cape HS Individuals Championship 2024 (U15 Girls)	2024-03-21	2024-03-22	Standard	Overberg (WOS)	6	6	1.5	Yes	Analysis
11	Overberg High Schools Trails 2024 (U15 Girls)	2024-03-02	2024-03-02	Standard	Overberg (WOS)	5	4	1	Yes	Analysis
12	Overberg High Schools Trails 2024 (U15)	2024-02-24	2024-02-24	Rapid	Overberg (WOS)	5	5	2.5	Yes	Analysis
13	Western Cape Top Schools 2023 (U13 Girls)	2023-09-02	2023-09-03	Standard	Cape Winelands (WCW)	6	5	0	Yes	Analysis
14	Overberg Top Schools 2023 (U13)	2023-08-05	2023-08-05	Standard	Overberg (WOS)	5	4	1	Yes	Analysis
15	Overberg School Chess Closed Tournament 2023 (U13 Girls)	2023-03-25	2023-03-25	Standard	Overberg (WOS)	5	5	1	Yes	Analysis
16	Overberg Schools Bredasdorp Zone Trails 2023 (U13)	2023-02-16	2023-03-02	Rapid	Overberg (WOS)	6	6	2	Yes	Analysis

#	Games	Start				End
1	4	Tournament Western Cape - Brian Raubenheimer Development Tournament 2024				Tournament Western Cape - Brian Raubenheimer Development Tournament 2024
		date 2024-06-08	rnd 1	type Rapid	result 1	date 2024-06-08	rnd 4	type Rapid	result 1
		Opponent Reynard, T (Tamara)				Opponent Engelbrecht, J (Jenna)
2	3	Tournament Overberg Schools - HS Trials 2025				Tournament Overberg Schools - HS Trials 2025
		date 2025-02-22	rnd 2	type Rapid	result 1	date 2025-02-22	rnd 4	type Rapid	result 1
		Opponent Tsemane, S (Sanele)				Opponent Nieman, S (Shannon)
3	3	Tournament Overberg Schools - Top Schools 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-07-27	rnd 4	type Standard	result 1	date 2024-08-30	rnd 1	type Standard	result 1
		Opponent Mngqingo, L (Linathi)				Opponent Vermeulen, P (Peigh-Lene)

#	Games	Start				End
1	3	Tournament Overberg Schools - Top Schools 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-07-27	rnd 4	type Standard	result 1	date 2024-08-30	rnd 1	type Standard	result 1
		Opponent Mngqingo, L (Linathi)				Opponent Vermeulen, P (Peigh-Lene)
2	2	Tournament Overberg Schools - HS Closed 2025				Tournament Overberg Schools - HS Closed 2025
		date 2025-03-22	rnd 3	type Standard	result 1	date 2025-03-22	rnd 4	type Standard	result 1
		Opponent Groenewald, J (Jody)				Opponent Shumane, A (Anawo)
3	2	Tournament Western Cape HS Individuals Championship 2024				Tournament Western Cape HS Individuals Championship 2024
		date 2024-03-21	rnd 2	type Standard	result 1	date 2024-03-21	rnd 3	type Standard	result 0.5
		Opponent Dambrosio, D (Djuna)				Opponent Du Toit, I (Isabella)

#	Games	Start				End
1	6	Tournament Overberg High Schools Trails 2024				Tournament Western Cape - Brian Raubenheimer Development Tournament 2024
		date 2024-02-24	rnd 4	type Rapid	result 0.5	date 2024-06-08	rnd 4	type Rapid	result 1
		Opponent Du Plessis, G (Gabriel)				Opponent Engelbrecht, J (Jenna)
2	3	Tournament Overberg Schools - HS Trials 2025				Tournament Overberg Schools - HS Trials 2025
		date 2025-02-22	rnd 2	type Rapid	result 1	date 2025-02-22	rnd 4	type Rapid	result 1
		Opponent Tsemane, S (Sanele)				Opponent Nieman, S (Shannon)
3	2	Tournament Overberg Schools Bredasdorp Zone Trails 2023				Tournament Overberg High Schools Trails 2024
		date 2023-03-02	rnd 6	type Rapid	result 1	date 2024-02-24	rnd 1	type Rapid	result 1
		Opponent Swart, J (Jayden)				Opponent Vogel, Z (Zandre)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Overberg Schools - Top Schools 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-07-27	rnd 4	type Standard	result 1	date 2024-08-30	rnd 1	type Standard	result 1
		Opponent Mngqingo, L (Linathi)				Opponent Vermeulen, P (Peigh-Lene)
2	2	Tournament Overberg Schools - HS Closed 2025				Tournament Overberg Schools - HS Closed 2025
		date 2025-03-22	rnd 3	type Standard	result 1	date 2025-03-22	rnd 4	type Standard	result 1
		Opponent Groenewald, J (Jody)				Opponent Shumane, A (Anawo)
3	2	Tournament Western Cape - Brian Raubenheimer Development Tournament 2024				Tournament Western Cape - Brian Raubenheimer Development Tournament 2024
		date 2024-06-08	rnd 3	type Rapid	result 1	date 2024-06-08	rnd 4	type Rapid	result 1
		Opponent Collins, X (Xiane)				Opponent Engelbrecht, J (Jenna)

#	Games	Start				End
1	3	Tournament Overberg Schools - Top Schools 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-07-27	rnd 4	type Standard	result 1	date 2024-08-30	rnd 1	type Standard	result 1
		Opponent Mngqingo, L (Linathi)				Opponent Vermeulen, P (Peigh-Lene)
2	2	Tournament Overberg Schools - HS Closed 2025				Tournament Overberg Schools - HS Closed 2025
		date 2025-03-22	rnd 3	type Standard	result 1	date 2025-03-22	rnd 4	type Standard	result 1
		Opponent Groenewald, J (Jody)				Opponent Shumane, A (Anawo)
3	1	Tournament Western Cape Schools - Top Schools 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-09-07	rnd 5	type Standard	result 1	date 2025-09-07	rnd 5	type Standard	result 1
		Opponent Bondt, C (Cu Reeza)				Opponent Bondt, C (Cu Reeza)

#	Games	Start				End
1	2	Tournament Western Cape - Brian Raubenheimer Development Tournament 2024				Tournament Western Cape - Brian Raubenheimer Development Tournament 2024
		date 2024-06-08	rnd 3	type Rapid	result 1	date 2024-06-08	rnd 4	type Rapid	result 1
		Opponent Collins, X (Xiane)				Opponent Engelbrecht, J (Jenna)
2	2	Tournament Overberg High Schools Trails 2024				Tournament Western Cape - Brian Raubenheimer Development Tournament 2024
		date 2024-02-24	rnd 5	type Rapid	result 1	date 2024-06-08	rnd 1	type Rapid	result 1
		Opponent Jacobs, T (Tineecke)				Opponent Reynard, T (Tamara)
3	2	Tournament Overberg Schools Bredasdorp Zone Trails 2023				Tournament Overberg High Schools Trails 2024
		date 2023-03-02	rnd 6	type Rapid	result 1	date 2024-02-24	rnd 1	type Rapid	result 1
		Opponent Swart, J (Jayden)				Opponent Vogel, Z (Zandre)

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	Lusawana ,A (Asonele)	3	0	-425	2	0	-425	1	0	-425	0	0	0
1	Lusawana ,A (Asonele)	3	1436	1011	2	1437	1011	1	1371.3	1011	0	0	0
2	Somi ,O (Onwabe)	2	1	0	2	1	0	0	0	0	0	0	0
2	Somi ,O (Onwabe)	2	1308.9	1308.9	2	1352.4	1308.9	0	0	0	0	0	0
3	Du Toit ,I (Isabella)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
3	Du Toit ,I (Isabella)	2	1289.9	1077.4	2	1259.6	1077.4	0	0	0	0	0	0
4	Hendricks ,L (Lakeisha)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Hendricks ,L (Lakeisha)	2	1201.6	776.6	2	1198.2	776.6	0	0	0	0	0	0
5	D`Ambrosio ,D (Djuna)	2	1	0	2	1	0	0	0	0	0	0	0
5	D`Ambrosio ,D (Djuna)	2	1178	1178	2	1200	1178	0	0	0	0	0	0
6	Van Schoor ,J (Jade)	2	1	0	1	1	425	1	0	-425	0	0	0
6	Van Schoor ,J (Jade)	2	1166.6	1166.6	1	1148.2	1591.6	1	1130.2	741.6	0	0	0
7	Taute ,M (Mecayla)	2	1.5	212.5	1	1	425	1	0.5	0	0	0	0
7	Taute ,M (Mecayla)	2	1215.8	1428.3	1	1192.2	1640.8	1	1200	1215.8	0	0	0
8	Groenewald ,J (Jody)	2	1.5	212.5	1	1	425	1	0.5	0	0	0	0
8	Groenewald ,J (Jody)	2	1197.8	1410.3	1	1198.4	1622.8	1	1200	1197.8	0	0	0
9	Jacobs ,T (Tineecke)	2	2	425	1	1	425	1	1	425	0	0	0
9	Jacobs ,T (Tineecke)	2	1154.7	1579.7	1	1200	1579.7	1	1125.8	1579.7	0	0	0
10	Smal ,R (Riley)	2	1	0	0	0	0	2	1	0	0	0	0
10	Smal ,R (Riley)	2	1196.8	1196.8	0	0	0	2	1152	1196.8	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Pieterse, J (Jay-Leigh)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms