Chess South Africa Ratings Database

PLAYER PAGE

Personal

Pieterse, J (Jemille)

Chess SA id

1130309864

FIDE id

Date of birth

2013-10-01 (U14)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-18

Personal details last changed

2025-10-04

Junior GPX Games

22.7

Junior GPX Points

1051.9

Item	Main	Standard	Rapid	Blitz
Rating	1230.9	1213.6	1236.9	1200
Raw rating	1218.5	1213.6	1196.1	1200
Weighted rating	1230.9	1212.4	1236.9	1200
Weighted performance	1109.1	0	1159.2	0
Floor	752.2	718	757.3	700
K-factor	36	36	36	36
Min/Max rating change allowed	161.5	162.6	166.7	165.8
Highest rating	1291.5 2024-11-01	1290.8 2024-08-01	1367.2 2024-11-01	1200 2024-08-01
Highest raw rating	1252.2 2025-09-01	1218 2024-09-01	1257.3 2025-09-01	1200 2024-08-01
Highest weighted rating	1230.9 2025-11-01	1218 2024-10-01	1236.9 2025-11-01	1200 2024-08-01
Highest weighted performance	1291.5 2024-11-01	1290.8 2024-08-01	1367.2 2024-11-01	1200 2024-08-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.3	0	-2.4	0
New rating	1230.6	1213.6	1234.5	1200
Analysis
Rating	1230.9	1213.6	1236.9	1200
Raw rating	1218.5	1213.6	1196.1	1200
Weighted rating	1230.9	1212.4	1236.9
Weighted performance	1109.1	0	1159.2
K-factor	36	36	36	36
Floor	752.2	718	757.3	700
Max/Min rating change allowed	161.5	162.6	166.7	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	1218.5	1213.6	1196.1	1200
New weighted rating	1230.6	1212.7	1234.5	1200
New weighted performance	1102.6	0	1152.4	0
Temp new rating	1230.6	1213.6	1234.5	1200
Temp new rating +/-	-0.3	0	-2.4	0
Final new rating +/-	-0.3	0	-2.4	0
New rating	1230.6	1213.6	1234.5	1200
New K-factor	36	36	36	36
New floor	752.2	718	757.3	700

Item	Main	Standard	Rapid
	0	0	0
	32	6	26
	11	5	6
	0	0	0
	0	0	0
	0	0	0
History	43	11	32

Games since
	Main 43	Standard 11		Rapid 32		Blitz 0
Gender	M
Age group	U14
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	3885		1291		183
M	38		6		1
U14	753		249		41
U14 M	10		2		1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
M	-1		-1		-1
U14	-1		-1		-1
U14 M	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	1450		720		121
M	18		4		1
U14	325		168		37
U14 M	6		1		1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
M	-1		-1		-1
U14	-1		-1		-1
U14 M	-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	32	15.5	48.44	-13.3	1226.5	1213.2
Standard	6	3	50	0	1218.2	1218.2
Rapid	26	12.5	48.08	-16.3	1228.4	1212.1
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	43	22.5	52.33	19.8	1225.3	1245.1
Standard	11	6	54.55	38.6	1202.8	1241.4
Rapid	32	16.5	51.56	13.3	1233.1	1246.4
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1218.5	1213.6	1196.1	1200
2025-09-30	1252.2	1213.6	1257.3	1200
2025-09-01	1252.2	1213.6	1257.3	1200
2025-08-01	1236.6	1213.6	1252	1200
2025-07-01	1236.6	1213.6	1252	1200
2025-06-01	1236.6	1213.6	1252	1200
2025-05-01	1236.6	1213.6	1252	1200
2025-04-01	1236.6	1213.6	1252	1200
2025-03-01	1236.6	1213.6	1252	1200
2025-02-01	1236.6	1213.6	1252	1200
2025-01-01	1241.4	1218	1252	1200
2024-12-01	1241.4	1218	1252	1200
2024-11-01	1241.4	1218	1252	1200
2024-10-01	1212	1218	1200	1200
2024-09-01	1212	1218	1200	1200
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-05-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	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	Worcester Schools Knock-Out 2025 (U13 Boys)	2025-10-18	2025-10-18	Rapid	Cape Winelands (WCW)	6	6	2	Yes	Analysis
2	Langeberg Club 2025 (U14)	2025-10-04	2025-10-04	Rapid	Cape Winelands (WCW)	6	5	2	Yes	Analysis
3	Cape Winelands Top Schools 2025 (U13)	2025-08-23	2025-08-23	Rapid	Cape Winelands (WCW)	5	5	3	Yes	Analysis
4	De Villiers PS 2025 (U14+High School Boys)	2025-08-16	2025-08-16	Rapid	Cape Winelands (WCW)	5	5	2.5	Yes	Analysis
5	Cape Winelands Schools Development 2025 (U13 Boys)	2025-08-02	2025-08-02	Rapid	Cape Winelands (WCW)	5	5	3	Yes	Analysis
6	Marie Delport Memorial 2025 (U14 Boys)	2025-01-25	2025-01-26	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Worcester Schools Knock-Out 2025 (U13 Boys)	2025-10-18	2025-10-18	Rapid	Cape Winelands (WCW)	6	6	2	Yes	Analysis
2	Langeberg Club 2025 (U14)	2025-10-04	2025-10-04	Rapid	Cape Winelands (WCW)	6	5	2	Yes	Analysis
3	Cape Winelands Top Schools 2025 (U13)	2025-08-23	2025-08-23	Rapid	Cape Winelands (WCW)	5	5	3	Yes	Analysis
4	De Villiers PS 2025 (U14+High School Boys)	2025-08-16	2025-08-16	Rapid	Cape Winelands (WCW)	5	5	2.5	Yes	Analysis
5	Cape Winelands Schools Development 2025 (U13 Boys)	2025-08-02	2025-08-02	Rapid	Cape Winelands (WCW)	5	5	3	Yes	Analysis
6	Marie Delport Memorial 2025 (U14 Boys)	2025-01-25	2025-01-26	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis
7	Worcester Knock-Out 2024 (U11 Boys)	2024-10-19	2024-10-19	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
8	De Villiers PS Tournament 2024 (U14)	2024-08-17	2024-08-17	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis

#	Games	Start				End
1	4	Tournament De Villiers PS Tournament 2024				Tournament Worcester Knock-Out 2024
		date 2024-08-17	rnd 3	type Standard	result 1	date 2024-10-19	rnd 1	type Rapid	result 1
		Opponent Rudolf, G (Gladwin)				Opponent Snyders, B (Buren)
2	3	Tournament Cape Winelands Schools Development 2025				Tournament De Villiers PS 2025
		date 2025-08-02	rnd 4	type Rapid	result 1	date 2025-08-16	rnd 1	type Rapid	result 0.5
		Opponent Liebenberg, B (Breshade)				Opponent Hendricks, M (Marse)
3	3	Tournament Worcester Knock-Out 2024				Tournament Worcester Knock-Out 2024
		date 2024-10-19	rnd 3	type Rapid	result 1	date 2024-10-19	rnd 5	type Rapid	result 1
		Opponent Cornelissen, E (Eesa)				Opponent Grill, E (Eli)

#	Games	Start				End
1	5	Tournament De Villiers PS Tournament 2024				Tournament Marie Delport Memorial 2025
		date 2024-08-17	rnd 3	type Standard	result 1	date 2025-01-25	rnd 2	type Standard	result 1
		Opponent Rudolf, G (Gladwin)				Opponent Balaam, J (Joshua)
2	1	Tournament Marie Delport Memorial 2025				Tournament Marie Delport Memorial 2025
		date 2025-01-25	rnd 4	type Standard	result 1	date 2025-01-25	rnd 4	type Standard	result 1
		Opponent Boer, Q (Quade)				Opponent Boer, Q (Quade)

#	Games	Start				End
1	3	Tournament Cape Winelands Schools Development 2025				Tournament De Villiers PS 2025
		date 2025-08-02	rnd 4	type Rapid	result 1	date 2025-08-16	rnd 1	type Rapid	result 0.5
		Opponent Liebenberg, B (Breshade)				Opponent Hendricks, M (Marse)
2	3	Tournament Worcester Knock-Out 2024				Tournament Worcester Knock-Out 2024
		date 2024-10-19	rnd 3	type Rapid	result 1	date 2024-10-19	rnd 5	type Rapid	result 1
		Opponent Cornelissen, E (Eesa)				Opponent Grill, E (Eli)
3	2	Tournament Cape Winelands Top Schools 2025				Tournament Cape Winelands Top Schools 2025
		date 2025-08-23	rnd 3	type Rapid	result 1	date 2025-08-23	rnd 4	type Rapid	result 1
		Opponent Segals, K (Kenzo)				Opponent Witbooi, E (Enino)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament De Villiers PS Tournament 2024				Tournament Worcester Knock-Out 2024
		date 2024-08-17	rnd 3	type Standard	result 1	date 2024-10-19	rnd 1	type Rapid	result 1
		Opponent Rudolf, G (Gladwin)				Opponent Snyders, B (Buren)
2	3	Tournament Worcester Knock-Out 2024				Tournament Worcester Knock-Out 2024
		date 2024-10-19	rnd 3	type Rapid	result 1	date 2024-10-19	rnd 5	type Rapid	result 1
		Opponent Cornelissen, E (Eesa)				Opponent Grill, E (Eli)
3	2	Tournament Cape Winelands Top Schools 2025				Tournament Cape Winelands Top Schools 2025
		date 2025-08-23	rnd 3	type Rapid	result 1	date 2025-08-23	rnd 4	type Rapid	result 1
		Opponent Segals, K (Kenzo)				Opponent Witbooi, E (Enino)

#	Games	Start				End
1	5	Tournament De Villiers PS Tournament 2024				Tournament Marie Delport Memorial 2025
		date 2024-08-17	rnd 3	type Standard	result 1	date 2025-01-25	rnd 2	type Standard	result 1
		Opponent Rudolf, G (Gladwin)				Opponent Balaam, J (Joshua)
2	1	Tournament Marie Delport Memorial 2025				Tournament Marie Delport Memorial 2025
		date 2025-01-25	rnd 4	type Standard	result 1	date 2025-01-25	rnd 4	type Standard	result 1
		Opponent Boer, Q (Quade)				Opponent Boer, Q (Quade)

#	Games	Start				End
1	3	Tournament Worcester Knock-Out 2024				Tournament Worcester Knock-Out 2024
		date 2024-10-19	rnd 3	type Rapid	result 1	date 2024-10-19	rnd 5	type Rapid	result 1
		Opponent Cornelissen, E (Eesa)				Opponent Grill, E (Eli)
2	2	Tournament Cape Winelands Top Schools 2025				Tournament Cape Winelands Top Schools 2025
		date 2025-08-23	rnd 3	type Rapid	result 1	date 2025-08-23	rnd 4	type Rapid	result 1
		Opponent Segals, K (Kenzo)				Opponent Witbooi, E (Enino)
3	2	Tournament De Villiers PS 2025				Tournament Cape Winelands Top Schools 2025
		date 2025-08-16	rnd 5	type Rapid	result 1	date 2025-08-23	rnd 1	type Rapid	result 1
		Opponent Davids, J (Jaybriam)				Opponent Jonker, T (Thys)

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	Joseph ,V (Valdemiro)	2	0	-425	1	0	-425	1	0	-425	0	0	0
1	Joseph ,V (Valdemiro)	2	1149.9	724.9	1	1136	724.9	1	1183	724.9	0	0	0
2	Davids ,J (Jaybriam)	2	2	425	0	0	0	2	2	425	0	0	0
2	Davids ,J (Jaybriam)	2	1188.9	1613.9	0	0	0	2	1214.4	1613.9	0	0	0
3	Diedericks ,S (Shardonique)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Diedericks ,S (Shardonique)	1	1149	724	1	1160.4	724	0	0	0	0	0	0
4	Kroukamp ,Z (Zayde)	1	1	425	1	1	425	0	0	0	0	0	0
4	Kroukamp ,Z (Zayde)	1	1246.1	1671.1	1	1253.6	1671.1	0	0	0	0	0	0
5	Olivier ,D (Dian)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Olivier ,D (Dian)	1	1282.1	857.1	1	1282	857.1	0	0	0	0	0	0
6	Balaam ,J (Joshua)	1	1	425	1	1	425	0	0	0	0	0	0
6	Balaam ,J (Joshua)	1	1146.7	1571.7	1	1200	1571.7	0	0	0	0	0	0
7	Boer ,Q (Quade)	1	1	425	1	1	425	0	0	0	0	0	0
7	Boer ,Q (Quade)	1	1128.8	1553.8	1	1076.8	1553.8	0	0	0	0	0	0
8	Liebenberg ,B (Breshade)	1	1	425	0	0	0	1	1	425	0	0	0
8	Liebenberg ,B (Breshade)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
9	Willemse ,A (Arnick-Lee)	1	0	-425	0	0	0	1	0	-425	0	0	0
9	Willemse ,A (Arnick-Lee)	1	1190.3	765.3	0	0	0	1	1176.3	765.3	0	0	0
10	Cockrell ,C (Curwin)	1	0	-425	0	0	0	1	0	-425	0	0	0
10	Cockrell ,C (Curwin)	1	1201	776	0	0	0	1	1200.3	776	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Pieterse, J (Jemille)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms