Chess South Africa Ratings Database

PLAYER PAGE

Personal

Petersen, J (Joshua)

Chess SA id

1070146181

FIDE id

Date of birth

2007-08-16 (U20)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-10-05

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1346.7	1333.5	1241.8	1200
Raw rating	1346.4	1333.1	1241.8	1200
Weighted rating	1346.7	1333.5	1241.8	1200
Weighted performance	1072.7	1042	0	0
Floor	850.8	843.3	741.8	700
K-factor	36	36	36	36
Min/Max rating change allowed	134.6	137.2	156.2	165.8
Highest rating	1491.7 2022-08-01	1466.9 2022-08-01	1640.7 2023-08-01	1200 2018-10-01
Highest raw rating	1350.8 2024-03-01	1343.3 2023-03-01	1241.8 2024-03-01	1200 2024-02-01
Highest weighted rating	1346.4 2025-08-01	1333.1 2025-08-01	1241.7 2025-08-01	1200 2018-10-01
Highest weighted performance	1491.7 2022-08-01	1466.9 2022-08-01	1640.7 2023-08-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1346.7	1333.5	1241.8	1200
Analysis
Rating	1346.7	1333.5	1241.8	1200
Raw rating	1346.4	1333.1	1241.8	1200
Weighted rating	1346.7	1333.5	1241.8
Weighted performance	1072.7	1042	0
K-factor	36	36	36	36
Floor	850.8	843.3	741.8	700
Max/Min rating change allowed	134.6	137.2	156.2	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	1346.4	1333.1	1241.8	1200
New weighted rating	1346.7	1333.5	1241.8	1200
New weighted performance	1064.9	1034.2	0	0
Temp new rating	1346.7	1333.5	1241.8	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1346.7	1333.5	1241.8	1200
New K-factor	36	36	36	36
New floor	850.8	843.3	741.8	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	16	10	6
	23	21	2
	7	7	0
	0	0	0
History	46	38	8

Games since
	Main 16	Standard 10		Rapid 6		Blitz 0
Gender	Male
Age group	U20
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 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	46	28.5	61.96	101.6	1285.6	1387.2
Standard	38	23.5	61.84	100.7	1286.8	1387.4
Rapid	8	5	62.5	106.2	1279.9	1386.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1346.4	1333.1	1241.8	1200
2025-09-30	1346.4	1333.1	1241.8	1200
2025-09-01	1346.4	1333.1	1241.8	1200
2025-08-01	1346.4	1333.1	1241.8	1200
2025-07-01	1346.3	1332.9	1241.8	1200
2025-06-01	1346.2	1332.7	1241.8	1200
2025-05-01	1346	1332.4	1241.8	1200
2025-04-01	1345.7	1332.2	1241.8	1200
2025-03-01	1345.4	1331.9	1241.8	1200
2025-02-01	1344.9	1331.3	1241.8	1200
2025-01-01	1342.4	1326.4	1241.8	1200
2024-12-01	1342.4	1326.4	1241.8	1200
2024-11-01	1350.8	1339.7	1241.8	1200
2024-10-01	1350.8	1339.7	1241.8	1200
2024-09-01	1350.8	1339.7	1241.8	1200
2024-08-01	1350.8	1339.7	1241.8	1200
2024-07-01	1350.8	1339.7	1241.8	1200
2024-09-01	1350.8	1339.7	1241.8	1200
2024-05-01	1350.8	1339.7	1241.8	1200
2024-04-01	1350.8	1339.7	1241.8	1200
2024-03-01	1350.8	1339.7	1241.8	1200
2024-02-01	1335.7	1317	1240	1200
2024-01-01	1335.7	1317	1240	1200
2023-12-01	1335.7	1317	1240	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	Paarl Boys' High Chess Festival 2024	2024-10-04	2024-10-05	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis
2	Cape Winelands Schools - HS Trials 1 2024 (U18 Boys)	2024-02-17	2024-02-17	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
3	Grey College Team Championship 2024 (A)	2024-02-23	2024-02-24	Standard	Mangaung (FMB)	5	4	3	Yes	Analysis
4	Paarl Boys High Chess Festival 2023 (Elite Division)	2023-10-13	2023-10-14	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis
5	CW Top Schools 2023 (U18 Mix)	2023-08-26	2023-08-26	Rapid	Cape Winelands (WCW)	5	2	2	Yes	Analysis
6	Cape Winelands Schools Prestige 2023 (U17 Boys)	2023-03-11	2023-03-11	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis
7	Cape Winelands Schools Chess - Trials 1 2023 (U17 Boys)	2023-02-25	2023-02-25	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
8	Grey College Team Championship 2023 (B)	2023-02-03	2023-02-04	Standard	Mangaung (FMB)	5	5	5	Yes	Analysis
9	Western Cape Top Schools 2022 (U15 Mix)	2022-09-16	2022-09-17	Standard	Overberg (WOS)	5	2	0.5	Yes	Analysis
10	Cape Winelands Schools Top Schools 2022 (U15 Mix)	2022-08-27	2022-08-27	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis

#	Games	Start				End
1	8	Tournament Western Cape Top Schools 2022				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2022-09-17	rnd 4	type Standard	result 0.5	date 2023-02-25	rnd 2	type Standard	result 1
		Opponent Randelhoff, J (Jordan)				Opponent White, D (Dvenerio)
2	5	Tournament Cape Winelands Schools Top Schools 2022				Tournament Cape Winelands Schools Top Schools 2022
		date 2022-08-27	rnd 1	type Standard	result 0.5	date 2022-08-27	rnd 5	type Standard	result 1
		Opponent De Wet, M (Malcolm)				Opponent Jansen, L (Leeno)
3	4	Tournament Grey College Team Championship 2024				Tournament Paarl Boys' High Chess Festival 2024
		date 2024-02-23	rnd 3	type Standard	result 1	date 2024-10-04	rnd 1	type Standard	result 1
		Opponent Mafela, T (Tshiamo)				Opponent Louwrens, C (Christo)

#	Games	Start				End
1	8	Tournament Western Cape Top Schools 2022				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2022-09-17	rnd 4	type Standard	result 0.5	date 2023-02-25	rnd 2	type Standard	result 1
		Opponent Randelhoff, J (Jordan)				Opponent White, D (Dvenerio)
2	5	Tournament Cape Winelands Schools Top Schools 2022				Tournament Cape Winelands Schools Top Schools 2022
		date 2022-08-27	rnd 1	type Standard	result 0.5	date 2022-08-27	rnd 5	type Standard	result 1
		Opponent De Wet, M (Malcolm)				Opponent Jansen, L (Leeno)
3	4	Tournament Grey College Team Championship 2024				Tournament Paarl Boys' High Chess Festival 2024
		date 2024-02-23	rnd 3	type Standard	result 1	date 2024-10-04	rnd 1	type Standard	result 1
		Opponent Mafela, T (Tshiamo)				Opponent Louwrens, C (Christo)

#	Games	Start				End
1	2	Tournament CW Top Schools 2023				Tournament CW Top Schools 2023
		date 2023-08-26	rnd 2	type Rapid	result 1	date 2023-08-26	rnd 5	type Rapid	result 1
		Opponent Saoud, J (Jassem)				Opponent Uren, D (Dominique)
2	1	Tournament Cape Winelands Schools - HS Trials 1 2024				Tournament Cape Winelands Schools - HS Trials 1 2024
		date 2024-02-17	rnd 6	type Rapid	result 1	date 2024-02-17	rnd 6	type Rapid	result 1
		Opponent Kleinpenning, A (Aiden)				Opponent Kleinpenning, A (Aiden)
3	1	Tournament Cape Winelands Schools - HS Trials 1 2024				Tournament Cape Winelands Schools - HS Trials 1 2024
		date 2024-02-17	rnd 4	type Rapid	result 1	date 2024-02-17	rnd 4	type Rapid	result 1
		Opponent Pearce, M (Michael)				Opponent Pearce, M (Michael)

No games found.

#	Games	Start				End

#	Games	Start				End
1	7	Tournament Grey College Team Championship 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-03	rnd 1	type Standard	result 1	date 2023-02-25	rnd 2	type Standard	result 1
		Opponent Marnitz, K (Keenan)				Opponent White, D (Dvenerio)
2	4	Tournament Grey College Team Championship 2024				Tournament Paarl Boys' High Chess Festival 2024
		date 2024-02-23	rnd 3	type Standard	result 1	date 2024-10-04	rnd 1	type Standard	result 1
		Opponent Mafela, T (Tshiamo)				Opponent Louwrens, C (Christo)
3	2	Tournament Paarl Boys' High Chess Festival 2024				Tournament Paarl Boys' High Chess Festival 2024
		date 2024-10-05	rnd 4	type Standard	result 1	date 2024-10-05	rnd 5	type Standard	result 1
		Opponent Moko, K (Khaya)				Opponent O`callaghan, R (Regardt)

#	Games	Start				End
1	7	Tournament Grey College Team Championship 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-03	rnd 1	type Standard	result 1	date 2023-02-25	rnd 2	type Standard	result 1
		Opponent Marnitz, K (Keenan)				Opponent White, D (Dvenerio)
2	4	Tournament Grey College Team Championship 2024				Tournament Paarl Boys' High Chess Festival 2024
		date 2024-02-23	rnd 3	type Standard	result 1	date 2024-10-04	rnd 1	type Standard	result 1
		Opponent Mafela, T (Tshiamo)				Opponent Louwrens, C (Christo)
3	2	Tournament Paarl Boys' High Chess Festival 2024				Tournament Paarl Boys' High Chess Festival 2024
		date 2024-10-05	rnd 4	type Standard	result 1	date 2024-10-05	rnd 5	type Standard	result 1
		Opponent Moko, K (Khaya)				Opponent O`callaghan, R (Regardt)

#	Games	Start				End
1	2	Tournament CW Top Schools 2023				Tournament CW Top Schools 2023
		date 2023-08-26	rnd 2	type Rapid	result 1	date 2023-08-26	rnd 5	type Rapid	result 1
		Opponent Saoud, J (Jassem)				Opponent Uren, D (Dominique)
2	1	Tournament Cape Winelands Schools - HS Trials 1 2024				Tournament Cape Winelands Schools - HS Trials 1 2024
		date 2024-02-17	rnd 6	type Rapid	result 1	date 2024-02-17	rnd 6	type Rapid	result 1
		Opponent Kleinpenning, A (Aiden)				Opponent Kleinpenning, A (Aiden)
3	1	Tournament Cape Winelands Schools - HS Trials 1 2024				Tournament Cape Winelands Schools - HS Trials 1 2024
		date 2024-02-17	rnd 4	type Rapid	result 1	date 2024-02-17	rnd 4	type Rapid	result 1
		Opponent Pearce, M (Michael)				Opponent Pearce, M (Michael)

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	De Wet ,M (Malcolm)	2	1	0	2	1	0	0	0	0	0	0	0
1	De Wet ,M (Malcolm)	2	1326.7	1326.7	2	1279.1	1326.7	0	0	0	0	0	0
2	Fuhri ,R (Ruben)	1	1	425	1	1	425	0	0	0	0	0	0
2	Fuhri ,R (Ruben)	1	1222.5	1647.5	1	1199	1647.5	0	0	0	0	0	0
3	Yang ,C (Charng-Lin (Ryan))	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Yang ,C (Charng-Lin (Ryan))	1	1330.5	905.5	1	1187.6	905.5	0	0	0	0	0	0
4	Bredenkamp ,E (Elzaan)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
4	Bredenkamp ,E (Elzaan)	1	1268.3	1268.3	1	1234.4	1268.3	0	0	0	0	0	0
5	Blomerus ,K (Kian)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Blomerus ,K (Kian)	1	1452.2	1027.2	1	1415.9	1027.2	0	0	0	0	0	0
6	Badenhorst ,S (Stephan)	1	1	425	1	1	425	0	0	0	0	0	0
6	Badenhorst ,S (Stephan)	1	1181.3	1606.3	1	1178.5	1606.3	0	0	0	0	0	0
7	Marnitz ,K (Keenan)	1	1	425	1	1	425	0	0	0	0	0	0
7	Marnitz ,K (Keenan)	1	1198.9	1623.9	1	1217.3	1623.9	0	0	0	0	0	0
8	Moko ,K (Khaya)	1	1	425	1	1	425	0	0	0	0	0	0
8	Moko ,K (Khaya)	1	1257.8	1682.8	1	1270.1	1682.8	0	0	0	0	0	0
9	Jansen ,L (Leeno)	1	1	425	1	1	425	0	0	0	0	0	0
9	Jansen ,L (Leeno)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Van Der Merwe ,N (Nian)	1	1	425	1	1	425	0	0	0	0	0	0
10	Van Der Merwe ,N (Nian)	1	1196.7	1621.7	1	1192.8	1621.7	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Petersen, J (Joshua)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms