Chess South Africa Ratings Database

PLAYER PAGE

Personal

Pietersen, J (Juwellyn)

Chess SA id

105078145

FIDE id

Date of birth

2005-07-27 (Adult)

Gender

Male

Region

Eden (WEG)

Citizen

RSA

Titles

Chess SA registered

Last active game

2022-03-12

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1185.4	1186.7	714.2	714.2
Raw rating	1185.4	1186.7	714.2	714.2
Weighted rating	1185.4	1186.7	714.2	714.2
Weighted performance	454.4	453.9	0	0
Floor	689.8	691.1	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	169.3	169	331.3	331.3
Highest rating	1200 2018-02-01	1200 2018-02-01	1200 2024-02-01	1200 2024-02-01
Highest raw rating	1189.8 2020-03-01	1191.1 2020-03-01	714.2 2024-02-01	714.2 2024-02-01
Highest weighted rating	1189.8 2024-11-01	1191.1 2024-11-01	714.2 2024-11-01	714.2 2024-11-01
Highest weighted performance	1200 2018-02-01	1200 2018-02-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1185.4	1186.7	714.2	714.2
Analysis
Rating	1185.4	1186.7	714.2	714.2
Raw rating	1185.4	1186.7	714.2	714.2
Weighted rating	1185.4	1186.7	714.2
Weighted performance	454.4	453.9	0
K-factor	40	40	40	40
Floor	689.8	691.1	500	500
Max/Min rating change allowed	169.3	169	331.3	331.3
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	1185.4	1186.7	714.2	714.2
New weighted rating	1185.4	1186.7	714.2	714.2
New weighted performance	454	453.5	0	0
Temp new rating	1185.4	1186.7	714.2	714.2
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1185.4	1186.7	714.2	714.2
New K-factor	40	40	40	40
New floor	689.8	691.1	500	500

Item	Main	Standard
	0	0
	0	0
	0	0
	0	0
	5	5
	0	0
History	99	99

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Eden (WEG)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult 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	53	31.5	59.43	80.2	1031.4	1111.6
Standard	53	31.5	59.43	80.2	1031.4	1111.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1185.4	1186.7	714.2	714.2
2025-09-01	1185.4	1186.7	714.2	714.2
2025-08-01	1185.4	1186.7	714.2	714.2
2025-07-01	1185.4	1186.7	714.2	714.2
2025-06-01	1185.4	1186.7	714.2	714.2
2025-05-01	1185.4	1186.7	714.2	714.2
2025-04-01	1185.4	1186.7	714.2	714.2
2025-03-01	1185.4	1186.7	714.2	714.2
2025-02-01	1185.4	1186.7	714.2	714.2
2025-01-01	1185.4	1186.7	714.2	714.2
2024-12-01	1185.4	1186.7	714.2	714.2
2024-11-01	1185.4	1186.7	714.2	714.2
2024-10-01	1185.4	1186.7	714.2	714.2
2024-09-01	1185.4	1186.7	714.2	714.2
2024-08-01	1185.4	1186.7	714.2	714.2
2024-07-01	1185.4	1186.7	714.2	714.2
2024-06-01	1185.4	1186.7	714.2	714.2
2024-08-01	1185.4	1186.7	714.2	714.2
2024-04-01	1185.4	1186.7	714.2	714.2
2024-03-01	1185.4	1186.7	714.2	714.2
2024-02-01	1185.4	1186.7	714.2	714.2
2024-01-01	1185.4	1186.7	714.2	714.2
2023-12-01	1185.4	1186.7	714.2	714.2
2023-11-01	1185.4	1186.7	714.2	714.2

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	Eden Proewe 2 2022 (O18 Seuns)	2022-04-09	2022-04-09	Standard	Eden (WEG)	5	0	0	No	Analysis
2	Eden Proewe 1 2022 (O18 Seuns)	2022-03-12	2022-03-12	Standard	Eden (WEG)	5	5	3	Yes	Analysis
3	Eden Schools Closed Trials 1 2020 (U15 Boys)	2020-03-07	2020-03-07	Standard	Eden (WEG)	5	4	1	Yes	Analysis
4	Oudtshoorn Proewe 1 2020 (O15)	2020-02-15	2020-02-15	Standard	Eden (WEG)	5	5	4	Yes	Analysis
5	Eden Trials 3 2019 (U16 Open)	2019-05-11	2019-05-11	Standard	Eden (WEG)	5	4	3	Yes	Analysis
6	Eden Trials 2 2019 (U16 Open)	2019-04-13	2019-04-13	Standard	Eden (WEG)	5	5	3	Yes	Analysis
7	Eden Trials 1 2019 (U16 Open)	2019-03-02	2019-03-02	Standard	Eden (WEG)	5	5	2.5	Yes	Analysis
8	Oudtshoorn Trials 3 2019 (U16)	2019-02-16	2019-02-16	Standard	Eden (WEG)	5	5	3	Yes	Analysis
9	Oudtshoorn Trials 2 2019 (U16)	2019-02-09	2019-02-09	Standard	Eden (WEG)	5	5	3.5	Yes	Analysis
10	Oudtshoorn Trials 1 2019 (U16)	2019-01-19	2019-01-19	Standard	Eden (WEG)	5	0	0	No	Analysis
11	EDENSC Closed 3 2018 (U14 Open)	2018-05-12	2018-05-12	Standard	Eden (WEG)	5	5	3	Yes	Analysis
12	EDENSC Closed 2 2018 (U14 Open)	2018-04-14	2018-04-14	Standard	Eden (WEG)	5	5	3	Yes	Analysis
13	EDENSC Closed 1 2018 (U14 Boys)	2018-03-10	2018-03-10	Standard	Eden (WEG)	5	5	2.5	Yes	Analysis

#	Games	Start				End
1	5	Tournament Eden Trials 3 2019				Tournament Oudtshoorn Proewe 1 2020
		date 2019-05-11	rnd 3	type Standard	result 1	date 2020-02-15	rnd 2	type Standard	result 1
		Opponent Brown, M (Marquin)				Opponent Esau, S (Shenique)
2	4	Tournament Oudtshoorn Trials 2 2019				Tournament Oudtshoorn Trials 3 2019
		date 2019-02-09	rnd 4	type Standard	result 0.5	date 2019-02-16	rnd 2	type Standard	result 1
		Opponent Julies, N (Nigeal)				Opponent Ayford, K (Keanu)
3	3	Tournament Eden Proewe 1 2022				Tournament Eden Proewe 1 2022
		date 2022-03-12	rnd 2	type Standard	result 1	date 2022-03-12	rnd 4	type Standard	result 1
		Opponent Chari, T (Tashinga)				Opponent Swart, C (Calvin)

#	Games	Start				End
1	5	Tournament Eden Trials 3 2019				Tournament Oudtshoorn Proewe 1 2020
		date 2019-05-11	rnd 3	type Standard	result 1	date 2020-02-15	rnd 2	type Standard	result 1
		Opponent Brown, M (Marquin)				Opponent Esau, S (Shenique)
2	4	Tournament Oudtshoorn Trials 2 2019				Tournament Oudtshoorn Trials 3 2019
		date 2019-02-09	rnd 4	type Standard	result 0.5	date 2019-02-16	rnd 2	type Standard	result 1
		Opponent Julies, N (Nigeal)				Opponent Ayford, K (Keanu)
3	3	Tournament Eden Proewe 1 2022				Tournament Eden Proewe 1 2022
		date 2022-03-12	rnd 2	type Standard	result 1	date 2022-03-12	rnd 4	type Standard	result 1
		Opponent Chari, T (Tashinga)				Opponent Swart, C (Calvin)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Eden Trials 3 2019				Tournament Oudtshoorn Proewe 1 2020
		date 2019-05-11	rnd 3	type Standard	result 1	date 2020-02-15	rnd 2	type Standard	result 1
		Opponent Brown, M (Marquin)				Opponent Esau, S (Shenique)
2	3	Tournament Eden Proewe 1 2022				Tournament Eden Proewe 1 2022
		date 2022-03-12	rnd 2	type Standard	result 1	date 2022-03-12	rnd 4	type Standard	result 1
		Opponent Chari, T (Tashinga)				Opponent Swart, C (Calvin)
3	3	Tournament Eden Trials 2 2019				Tournament Eden Trials 2 2019
		date 2019-04-13	rnd 3	type Standard	result 1	date 2019-04-13	rnd 5	type Standard	result 1
		Opponent Saayman, N (Nerene)				Opponent Volschenk, H (Hennie)

#	Games	Start				End
1	5	Tournament Eden Trials 3 2019				Tournament Oudtshoorn Proewe 1 2020
		date 2019-05-11	rnd 3	type Standard	result 1	date 2020-02-15	rnd 2	type Standard	result 1
		Opponent Brown, M (Marquin)				Opponent Esau, S (Shenique)
2	3	Tournament Eden Proewe 1 2022				Tournament Eden Proewe 1 2022
		date 2022-03-12	rnd 2	type Standard	result 1	date 2022-03-12	rnd 4	type Standard	result 1
		Opponent Chari, T (Tashinga)				Opponent Swart, C (Calvin)
3	3	Tournament Eden Trials 2 2019				Tournament Eden Trials 2 2019
		date 2019-04-13	rnd 3	type Standard	result 1	date 2019-04-13	rnd 5	type Standard	result 1
		Opponent Saayman, N (Nerene)				Opponent Volschenk, H (Hennie)

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	Koen ,I (Ivan)	3	0	-425	3	0	-425	0	0	0	0	0	0
1	Koen ,I (Ivan)	3	1341	916	3	1341.2	916	0	0	0	0	0	0
2	Ayford ,K (Keanu)	3	3	425	3	3	425	0	0	0	0	0	0
2	Ayford ,K (Keanu)	3	1041.4	1466.4	3	1021.6	1466.4	0	0	0	0	0	0
3	Matthews ,I (Isiah)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
3	Matthews ,I (Isiah)	3	1060.5	1202.2	3	1044	1202.2	0	0	0	0	0	0
4	Bezuidenhout ,R (Ross)	2	2	425	2	2	425	0	0	0	0	0	0
4	Bezuidenhout ,R (Ross)	2	657.3	1082.3	2	676	1082.3	0	0	0	0	0	0
5	Daniels ,M (Muhammed)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Daniels ,M (Muhammed)	2	1125.5	700.5	2	1115.1	700.5	0	0	0	0	0	0
6	Sheldon ,A (Ackim)	2	1	0	2	1	0	0	0	0	0	0	0
6	Sheldon ,A (Ackim)	2	947.7	947.7	2	957.5	947.7	0	0	0	0	0	0
7	Saayman ,N (Nerene)	2	2	425	2	2	425	0	0	0	0	0	0
7	Saayman ,N (Nerene)	2	804.7	1229.7	2	800.5	1229.7	0	0	0	0	0	0
8	Saaiman ,J (Jarrod)	1	1	425	1	1	425	0	0	0	0	0	0
8	Saaiman ,J (Jarrod)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	Von Berg ,M (Meera)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Von Berg ,M (Meera)	1	1129.3	704.3	1	1124.8	704.3	0	0	0	0	0	0
10	Dreyer ,D (Dylan)	1	1	425	1	1	425	0	0	0	0	0	0
10	Dreyer ,D (Dylan)	1	1025.6	1450.6	1	999.6	1450.6	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Pietersen, J (Juwellyn)

Ratings

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Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms