Chess South Africa Ratings Database

PLAYER PAGE

Personal

Pietersen, J (Jamien)

Chess SA id

104086400

FIDE id

Date of birth

2004-02-04 (Adult)

Gender

Male

Region

ZF Mgcawu (NZF)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-05-25

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1359.1	1364.6	530.4	530.4
Raw rating	1359.1	1364.6	530.4	530.4
Weighted rating	1359.1	1364.5	530.4	530.4
Weighted performance	973.7	972.8	0	0
Floor	865.7	873.5	500	500
K-factor	36	36	40	40
Min/Max rating change allowed	132.2	131.2	430.5	430.5
Highest rating	1365.7 2021-05-01	1373.5 2021-05-01	1200 2024-02-01	1200 2024-02-01
Highest raw rating	1365.7 2021-05-01	1373.5 2021-05-01	530.4 2024-02-01	530.4 2024-02-01
Highest weighted rating	1365.7 2024-02-01	1373.5 2025-02-01	530.4 2024-11-01	530.4 2024-11-01
Highest weighted performance	1332.5 2019-09-01	1331.6 2019-09-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1359.1	1364.6	530.4	530.4
Analysis
Rating	1359.1	1364.6	530.4	530.4
Raw rating	1359.1	1364.6	530.4	530.4
Weighted rating	1359.1	1364.5	530.4
Weighted performance	973.7	972.8	0
K-factor	36	36	40	40
Floor	865.7	873.5	500	500
Max/Min rating change allowed	132.2	131.2	430.5	430.5
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	1359.1	1364.6	530.4	530.4
New weighted rating	1359.1	1364.5	530.4	530.4
New weighted performance	965.7	964.8	0	0
Temp new rating	1359.1	1364.6	530.4	530.4
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1359.1	1364.6	530.4	530.4
New K-factor	36	36	40	40
New floor	865.7	873.5	500	500

Item	Main	Standard
	0	0
	9	9
	0	0
	0	0
	0	0
	11	11
History	110	110

Games since
	Main 9	Standard 9		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	ZF Mgcawu (NZF)
Province	Northern Cape (NC)
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	9	3	33.33	-141.7	1396.7	1255
Standard	9	3	33.33	-141.7	1396.7	1255
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	94	61	64.89	126.6	1156.9	1283.5
Standard	94	61	64.89	126.6	1156.9	1283.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1359.1	1364.6	530.4	530.4
2025-09-30	1359.1	1364.6	530.4	530.4
2025-09-01	1359.1	1364.6	530.4	530.4
2025-08-01	1359.1	1364.6	530.4	530.4
2025-07-01	1359.1	1364.5	530.4	530.4
2025-06-01	1358	1363.2	530.4	530.4
2025-05-01	1357.7	1362.8	530.4	530.4
2025-04-01	1359.4	1364.9	530.4	530.4
2025-03-01	1359.4	1364.9	530.4	530.4
2025-02-01	1359.4	1364.9	530.4	530.4
2025-01-01	1359.4	1364.9	530.4	530.4
2024-12-01	1359.4	1364.9	530.4	530.4
2024-11-01	1359.4	1364.9	530.4	530.4
2024-10-01	1359.4	1364.9	530.4	530.4
2024-09-01	1359.4	1364.9	530.4	530.4
2024-08-01	1359.4	1364.9	530.4	530.4
2024-07-01	1359.4	1364.9	530.4	530.4
2024-09-01	1359.4	1364.9	530.4	530.4
2024-05-01	1359.4	1364.9	530.4	530.4
2024-04-01	1359.4	1364.9	530.4	530.4
2024-03-01	1359.4	1364.9	530.4	530.4
2024-02-01	1359.4	1364.9	530.4	530.4
2024-01-01	1359.4	1364.9	530.4	530.4
2023-12-01	1359.4	1364.9	530.4	530.4

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	Northern Cape Closed 202 (Adults)	2025-08-22	2025-08-23	Standard	ZF Mgcawu (NZF)	5	0	0	No	Analysis
2	Spartan Bishops Championships Elite 2025 (Championship)	2025-05-23	2025-05-25	Standard	Frances Baard (NCF)	5	4	0.5	Yes	Analysis
3	Pawn Stars Chess Tournament 12 April 2025 (A)	2025-04-12	2025-04-12	Standard	ZF Mgcawu (NZF)	5	5	2.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Northern Cape Closed 202 (Adults)	2025-08-22	2025-08-23	Standard	ZF Mgcawu (NZF)	5	0	0	No	Analysis
2	Spartan Bishops Championships Elite 2025 (Championship)	2025-05-23	2025-05-25	Standard	Frances Baard (NCF)	5	4	0.5	Yes	Analysis
3	Pawn Stars Chess Tournament 12 April 2025 (A)	2025-04-12	2025-04-12	Standard	ZF Mgcawu (NZF)	5	5	2.5	Yes	Analysis
4	ZFM Chess Championships 2021 (A)	2021-09-04	2021-09-04	Standard	ZF Mgcawu (NZF)	5	5	4	Yes	Analysis
5	Pixley Chess Open 2021 (U18-Open)	2021-05-15	2021-05-15	Standard	Pixley-ka-Seme (NCP)	5	2	0	Yes	Analysis
6	ZFM Freedom Day Tournament 2021	2021-04-27	2021-04-27	Standard	ZF Mgcawu (NZF)	5	4	4	Yes	Analysis
7	Northern Cape Closed Chess Championships 2019 (U10)	2019-08-30	2019-09-01	Standard	ZF Mgcawu (NZF)	5	5	4	Yes	Analysis
8	2019 SA Schools Winter Games (U15 Boys)	2019-07-01	2019-07-04	Standard	Ethekwini (KED)	7	7	3	Yes	Analysis
9	Northern Cape Trails 2019 (U15 Boys)	2019-06-13	2019-06-13	Standard	ZF Mgcawu (NZF)	5	5	4	Yes	Analysis
10	ZFM School Trials 2019 (U15)	2019-04-27	2019-04-27	Standard	ZF Mgcawu (NZF)	5	5	3	Yes	Analysis
11	South African Junior Team Championships 2018 (U16C)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	5	Yes	Analysis
12	Northern Cape Closed Chess Championships 2018 (U16 Open)	2018-08-31	2018-09-01	Standard	Frances Baard (NCF)	5	5	2.5	Yes	Analysis
13	King`s Guard Women`s Day Open Chess Tournament 2018 (A)	2018-08-04	2018-08-04	Standard	ZF Mgcawu (NZF)	5	5	3	Yes	Analysis
14	ZF MGCAWU Mandela Centenary Open Chess Tournament 2018 (U16)	2018-07-20	2018-07-21	Standard	ZF Mgcawu (NZF)	6	6	4.5	Yes	Analysis
15	NC Provincial Schools Eliminations 2018 (U15 Boys)	2018-06-23	2018-06-23	Standard	Frances Baard (NCF)	5	5	3.5	Yes	Analysis
16	Inter Regional 2018 (U16 Team)	2018-05-04	2018-05-05	Standard	Frances Baard (NCF)	5	4	2	Yes	Analysis
17	ZF Mgcawu Qualifier (2)	2018-04-21	2018-04-21	Standard	ZF Mgcawu (NZF)	5	5	3.5	Yes	Analysis
18	ZF Mgcawu Schools District Open Chess Tournament 2018 (U15 Boys)	2018-03-17	2018-03-17	Standard	ZF Mgcawu (NZF)	5	5	4	Yes	Analysis
19	ZF Mgcawu Inter-Region Open Trials (Qualifier 2)	2018-03-24	2018-03-24	Standard	ZF Mgcawu (NZF)	5	5	4	Yes	Analysis
20	ZF Mgcawu Qualifier Open Chess Tournament 2018 (B)	2018-02-17	2018-02-17	Standard	ZF Mgcawu (NZF)	5	5	4	Yes	Analysis

#	Games	Start				End
1	10	Tournament NC Provincial Schools Eliminations 2018				Tournament King`s Guard Women`s Day Open Chess Tournament 2018
		date 2018-06-23	rnd 3	type Standard	result 1	date 2018-08-04	rnd 1	type Standard	result 1
		Opponent Van Der Mescht, M (Matthew)				Opponent West, W (William)
2	5	Tournament Northern Cape Closed Chess Championships 2019				Tournament ZFM Freedom Day Tournament 2021
		date 2019-09-01	rnd 5	type Standard	result 1	date 2021-04-27	rnd 5	type Standard	result 1
		Opponent Mokoena, B (Bonolo)				Opponent Murphy, M (Martiz)
3	5	Tournament South African Junior Team Championships 2018				Tournament South African Junior Team Championships 2018
		date 2018-12-16	rnd 1	type Standard	result 1	date 2018-12-18	rnd 5	type Standard	result 0.5
		Opponent Smith, B (Brandon)				Opponent Botha, JL (Johannes)

#	Games	Start				End
1	10	Tournament NC Provincial Schools Eliminations 2018				Tournament King`s Guard Women`s Day Open Chess Tournament 2018
		date 2018-06-23	rnd 3	type Standard	result 1	date 2018-08-04	rnd 1	type Standard	result 1
		Opponent Van Der Mescht, M (Matthew)				Opponent West, W (William)
2	5	Tournament Northern Cape Closed Chess Championships 2019				Tournament ZFM Freedom Day Tournament 2021
		date 2019-09-01	rnd 5	type Standard	result 1	date 2021-04-27	rnd 5	type Standard	result 1
		Opponent Mokoena, B (Bonolo)				Opponent Murphy, M (Martiz)
3	5	Tournament South African Junior Team Championships 2018				Tournament South African Junior Team Championships 2018
		date 2018-12-16	rnd 1	type Standard	result 1	date 2018-12-18	rnd 5	type Standard	result 0.5
		Opponent Smith, B (Brandon)				Opponent Botha, JL (Johannes)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Northern Cape Closed Chess Championships 2019				Tournament ZFM Freedom Day Tournament 2021
		date 2019-09-01	rnd 5	type Standard	result 1	date 2021-04-27	rnd 5	type Standard	result 1
		Opponent Mokoena, B (Bonolo)				Opponent Murphy, M (Martiz)
2	5	Tournament ZF Mgcawu Qualifier Open Chess Tournament 2018				Tournament ZF Mgcawu Schools District Open Chess Tournament 2018
		date 2018-02-17	rnd 5	type Standard	result 1	date 2018-03-17	rnd 4	type Standard	result 1
		Opponent Poolman, JM (Johanna)				Opponent Hanekom, W (Driaan)
3	3	Tournament ZFM Chess Championships 2021				Tournament ZFM Chess Championships 2021
		date 2021-09-04	rnd 3	type Standard	result 1	date 2021-09-04	rnd 5	type Standard	result 1
		Opponent Jooste, W (Waylin)				Opponent Macomo, R (Realeboga)

#	Games	Start				End
1	5	Tournament Northern Cape Closed Chess Championships 2019				Tournament ZFM Freedom Day Tournament 2021
		date 2019-09-01	rnd 5	type Standard	result 1	date 2021-04-27	rnd 5	type Standard	result 1
		Opponent Mokoena, B (Bonolo)				Opponent Murphy, M (Martiz)
2	5	Tournament ZF Mgcawu Qualifier Open Chess Tournament 2018				Tournament ZF Mgcawu Schools District Open Chess Tournament 2018
		date 2018-02-17	rnd 5	type Standard	result 1	date 2018-03-17	rnd 4	type Standard	result 1
		Opponent Poolman, JM (Johanna)				Opponent Hanekom, W (Driaan)
3	3	Tournament ZFM Chess Championships 2021				Tournament ZFM Chess Championships 2021
		date 2021-09-04	rnd 3	type Standard	result 1	date 2021-09-04	rnd 5	type Standard	result 1
		Opponent Jooste, W (Waylin)				Opponent Macomo, R (Realeboga)

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	Booysen ,V (Vuyani)	5	1	-255	5	1	-255	0	0	0	0	0	0
1	Booysen ,V (Vuyani)	5	1287.4	1032.4	5	1287.3	1032.4	0	0	0	0	0	0
2	Mienies ,R (Rewaldo)	5	3	85	5	3	85	0	0	0	0	0	0
2	Mienies ,R (Rewaldo)	5	1239.5	1324.5	5	1243.9	1324.5	0	0	0	0	0	0
3	Bezuidenhout ,H (Hilton)	4	1	-212.5	4	1	-212.5	0	0	0	0	0	0
3	Bezuidenhout ,H (Hilton)	4	1020.8	808.2	4	1032.9	808.2	0	0	0	0	0	0
4	Jooste ,W (Waylin)	2	1	0	2	1	0	0	0	0	0	0	0
4	Jooste ,W (Waylin)	2	1252.2	1252.2	2	1256.1	1252.2	0	0	0	0	0	0
5	Poolman ,JM (Johanna)	2	1	0	2	1	0	0	0	0	0	0	0
5	Poolman ,JM (Johanna)	2	834.2	834.2	2	856.4	834.2	0	0	0	0	0	0
6	Joodt ,I (Ishuhanno)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
6	Joodt ,I (Ishuhanno)	2	1200.1	1412.6	2	1198.3	1412.6	0	0	0	0	0	0
7	Kruger ,S (Stephanus)	2	2	425	2	2	425	0	0	0	0	0	0
7	Kruger ,S (Stephanus)	2	1152.7	1577.7	2	1143	1577.7	0	0	0	0	0	0
8	Hanekom ,W (Driaan)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
8	Hanekom ,W (Driaan)	2	1237.8	1450.3	2	1239.9	1450.3	0	0	0	0	0	0
9	Kegakilwe ,I (Itumeleng)	2	2	425	2	2	425	0	0	0	0	0	0
9	Kegakilwe ,I (Itumeleng)	2	1188.7	1613.7	2	1186	1613.7	0	0	0	0	0	0
10	West ,W (William)	2	2	425	2	2	425	0	0	0	0	0	0
10	West ,W (William)	2	798.2	1223.2	2	734	1223.2	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 (Jamien)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms