Chess South Africa Ratings Database

PLAYER PAGE

Personal

Pieterse, J (Jonathan)

Chess SA id

1120149915

FIDE id

Date of birth

2012-01-01 (U14)

Gender

Male

Region

Eden (WEG)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-03-02

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1336	1354.1	1200	1200
Raw rating	1336	1354.1	1200	1200
Weighted rating	1334.9	1352.9	1200	1200
Weighted performance	0	0	0	0
Floor	836	854.1	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	136.6	133.1	165.8	165.8
Highest rating	1449.5 2023-02-01	1439.7 2023-02-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1336 2024-04-01	1354.1 2024-04-01	1200 2024-03-01	1200 2024-03-01
Highest weighted rating	1332.6 2025-08-01	1350.5 2025-08-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1449.5 2023-02-01	1439.7 2023-02-01	1200 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1336	1354.1	1200	1200
Analysis
Rating	1336	1354.1	1200	1200
Raw rating	1336	1354.1	1200	1200
Weighted rating	1334.9	1352.9	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	836	854.1	700	700
Max/Min rating change allowed	136.6	133.1	165.8	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	1336	1354.1	1200	1200
New weighted rating	1335.3	1353.4	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1336	1354.1	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1336	1354.1	1200	1200
New K-factor	36	36	36	36
New floor	836	854.1	700	700

Item	Main	Standard
	0	0
	0	0
	9	9
	10	10
	0	0
	0	0
History	19	19

Games since
	Main 9	Standard 9		Rapid 0		Blitz 0
Gender	Male
Age group	U14
Region	Eden (WEG)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-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	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
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	19	11.5	60.53	89.5	1343.7	1433.2
Standard	19	11.5	60.53	89.5	1343.7	1433.2
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1336	1354.1	1200	1200
2025-09-30	1336	1354.1	1200	1200
2025-09-01	1336	1354.1	1200	1200
2025-08-01	1336	1354.1	1200	1200
2025-07-01	1336	1354.1	1200	1200
2025-06-01	1336	1354.1	1200	1200
2025-05-01	1336	1354.1	1200	1200
2025-04-01	1336	1354.1	1200	1200
2025-03-01	1336	1354.1	1200	1200
2025-02-01	1336	1354.1	1200	1200
2025-01-01	1336	1354.1	1200	1200
2024-12-01	1336	1354.1	1200	1200
2024-11-01	1336	1354.1	1200	1200
2024-10-01	1336	1354.1	1200	1200
2024-09-01	1336	1354.1	1200	1200
2024-08-01	1336	1354.1	1200	1200
2024-07-01	1336	1354.1	1200	1200
2024-09-01	1336	1354.1	1200	1200
2024-05-01	1336	1354.1	1200	1200
2024-04-01	1336	1354.1	1200	1200
2024-03-01	1310	1323.9	1200	1200
2024-02-01	1296.3	1312.4	1200	1200
2024-01-01	1296.3	1312.4	1200	1200
2023-12-01	1296.3	1312.4	1200	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	George Schools Trials 3 2024 (U13 Boys)	2024-03-02	2024-03-02	Standard	Eden (WEG)	5	5	3	Yes	Analysis
2	George Schools Trials 2 2024 (U13 Boys)	2024-02-17	2024-02-17	Standard	Eden (WEG)	5	4	2	Yes	Analysis
3	George Chess Trials 3 2023 (U11 Boys)	2023-02-25	2023-02-25	Standard	Eden (WEG)	5	5	3	Yes	Analysis
4	George Chess Trials 2 2023 (U11 Boys)	2023-02-11	2023-02-11	Standard	Cape Town (WCT)	5	5	3.5	Yes	Analysis

#	Games	Start				End
1	4	Tournament George Chess Trials 2 2023				Tournament George Chess Trials 2 2023
		date 2023-02-11	rnd 2	type Standard	result 1	date 2023-02-11	rnd 5	type Standard	result 1
		Opponent Bench Van Rooyen, R (Rj)				Opponent Engel, T (Thomas)
2	3	Tournament George Chess Trials 3 2023				Tournament George Schools Trials 2 2024
		date 2023-02-25	rnd 4	type Standard	result 1	date 2024-02-17	rnd 1	type Standard	result 1
		Opponent Bench Van Rooyen, R (Rj)				Opponent Marriott Watson, T (Takaro)
3	2	Tournament George Schools Trials 3 2024				Tournament George Schools Trials 3 2024
		date 2024-03-02	rnd 3	type Standard	result 1	date 2024-03-02	rnd 4	type Standard	result 1
		Opponent Tamboer, K (Kurt-Lee)				Opponent Mouton, P (Paul)

#	Games	Start				End
1	4	Tournament George Chess Trials 2 2023				Tournament George Chess Trials 2 2023
		date 2023-02-11	rnd 2	type Standard	result 1	date 2023-02-11	rnd 5	type Standard	result 1
		Opponent Bench Van Rooyen, R (Rj)				Opponent Engel, T (Thomas)
2	3	Tournament George Chess Trials 3 2023				Tournament George Schools Trials 2 2024
		date 2023-02-25	rnd 4	type Standard	result 1	date 2024-02-17	rnd 1	type Standard	result 1
		Opponent Bench Van Rooyen, R (Rj)				Opponent Marriott Watson, T (Takaro)
3	2	Tournament George Schools Trials 3 2024				Tournament George Schools Trials 3 2024
		date 2024-03-02	rnd 3	type Standard	result 1	date 2024-03-02	rnd 4	type Standard	result 1
		Opponent Tamboer, K (Kurt-Lee)				Opponent Mouton, P (Paul)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament George Chess Trials 3 2023				Tournament George Schools Trials 2 2024
		date 2023-02-25	rnd 4	type Standard	result 1	date 2024-02-17	rnd 1	type Standard	result 1
		Opponent Bench Van Rooyen, R (Rj)				Opponent Marriott Watson, T (Takaro)
2	2	Tournament George Schools Trials 3 2024				Tournament George Schools Trials 3 2024
		date 2024-03-02	rnd 3	type Standard	result 1	date 2024-03-02	rnd 4	type Standard	result 1
		Opponent Tamboer, K (Kurt-Lee)				Opponent Mouton, P (Paul)
3	2	Tournament George Chess Trials 2 2023				Tournament George Chess Trials 2 2023
		date 2023-02-11	rnd 2	type Standard	result 1	date 2023-02-11	rnd 3	type Standard	result 1
		Opponent Bench Van Rooyen, R (Rj)				Opponent Willemse, O (Olwethu)

#	Games	Start				End
1	3	Tournament George Chess Trials 3 2023				Tournament George Schools Trials 2 2024
		date 2023-02-25	rnd 4	type Standard	result 1	date 2024-02-17	rnd 1	type Standard	result 1
		Opponent Bench Van Rooyen, R (Rj)				Opponent Marriott Watson, T (Takaro)
2	2	Tournament George Schools Trials 3 2024				Tournament George Schools Trials 3 2024
		date 2024-03-02	rnd 3	type Standard	result 1	date 2024-03-02	rnd 4	type Standard	result 1
		Opponent Tamboer, K (Kurt-Lee)				Opponent Mouton, P (Paul)
3	2	Tournament George Chess Trials 2 2023				Tournament George Chess Trials 2 2023
		date 2023-02-11	rnd 2	type Standard	result 1	date 2023-02-11	rnd 3	type Standard	result 1
		Opponent Bench Van Rooyen, R (Rj)				Opponent Willemse, O (Olwethu)

No games found.

#	Games	Start				End

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	Simon ,R (Riley)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Simon ,R (Riley)	2	1545	1120	2	1508.1	1120	0	0	0	0	0	0
2	Bench Van Rooyen ,R (Rj)	2	2	425	2	2	425	0	0	0	0	0	0
2	Bench Van Rooyen ,R (Rj)	2	1137.9	1562.9	2	1128.4	1562.9	0	0	0	0	0	0
3	Willemse ,O (Olwethu)	1	1	425	1	1	425	0	0	0	0	0	0
3	Willemse ,O (Olwethu)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
4	Prins ,E (Eddie)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Prins ,E (Eddie)	1	1609.1	1184.1	1	1588.9	1184.1	0	0	0	0	0	0
5	Fourie ,L (Loftie)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Fourie ,L (Loftie)	1	1400.5	975.5	1	1390.3	975.5	0	0	0	0	0	0
6	Wessels ,O (Olwethu)	1	1	425	1	1	425	0	0	0	0	0	0
6	Wessels ,O (Olwethu)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Mouton ,P (Paul)	1	1	425	1	1	425	0	0	0	0	0	0
7	Mouton ,P (Paul)	1	1354.8	1779.8	1	1375.6	1779.8	0	0	0	0	0	0
8	Schmidt ,U (Ulrich)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Schmidt ,U (Ulrich)	1	1518.9	1093.9	1	1519.2	1093.9	0	0	0	0	0	0
9	Coleman ,F (Ferdinand)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Coleman ,F (Ferdinand)	1	1364.1	939.1	1	1368.8	939.1	0	0	0	0	0	0
10	Punt ,H (Heinrich)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Punt ,H (Heinrich)	1	1505.1	1080.1	1	1507.1	1080.1	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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Statistics

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PLAYER PAGE

Personal

Pieterse, J (Jonathan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms