Chess South Africa Ratings Database

PLAYER PAGE

Personal

Petersen, J (Joshua)

Chess SA id

1090308072

FIDE id

Date of birth

2009-06-17 (U18)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-04-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1436.7	1431.7	1301.6	1200
Raw rating	1436.7	1431.7	1301.6	1200
Weighted rating	1369.2	1349.3	1294.5	1200
Weighted performance	0	0	0	0
Floor	936.7	931.7	801.6	700
K-factor	32	32	36	36
Min/Max rating change allowed	118.3	119.2	143.5	165.8
Highest rating	1549.4 2024-07-01	1431.7 2025-05-05	1639.5 2024-07-01	1200 2024-10-01
Highest raw rating	1436.7 2025-05-05	1431.7 2025-05-05	1301.6 2024-10-01	1200 2024-10-01
Highest weighted rating	1436.7 2024-10-01	1283.3 2025-08-01	1301.6 2024-10-01	1200 2024-10-01
Highest weighted performance	1549.4 2024-07-01	1200 2024-10-01	1639.5 2024-07-01	1200 2024-10-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1436.7	1431.7	1301.6	1200
Analysis
Rating	1436.7	1431.7	1301.6	1200
Raw rating	1436.7	1431.7	1301.6	1200
Weighted rating	1369.2	1349.3	1294.5
Weighted performance	0	0	0
K-factor	32	32	36	36
Floor	936.7	931.7	801.6	700
Max/Min rating change allowed	118.3	119.2	143.5	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	1436.7	1431.7	1301.6	1200
New weighted rating	1378.7	1360.2	1296.5	1200
New weighted performance	0	0	0	0
Temp new rating	1436.7	1431.7	1301.6	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1436.7	1431.7	1301.6	1200
New K-factor	32	32	36	36
New floor	936.7	931.7	801.6	700

Item	Main	Standard	Rapid
	0	0	0
	18	18	0
	5	0	5
	0	0	0
	0	0	0
	0	0	0
History	23	18	5

Games since
	Main 23	Standard 18		Rapid 5		Blitz 0
Gender	Male
Age group	U18
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 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	18	11.5	63.89	118.1	1471.6	1589.7
Standard	18	11.5	63.89	118.1	1471.6	1589.7
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	23	16.5	71.74	184.8	1410.7	1595.5
Standard	18	11.5	63.89	118.1	1471.6	1589.7
Rapid	5	5	100	425	1191.6	1616.6
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1436.7	1431.7	1301.6	1200
2025-11-30	1436.7	1431.7	1301.6	1200
2025-11-01	1436.7	1431.7	1301.6	1200
2025-09-30	1436.7	1431.7	1301.6	1200
2025-09-01	1436.7	1431.7	1301.6	1200
2025-08-01	1436.7	1431.7	1301.6	1200
2025-07-01	1436.7	1431.7	1301.6	1200
2025-06-01	1436.7	1431.7	1301.6	1200
2025-05-01	1436.7	1431.7	1301.6	1200
2025-04-01	1358.5	1335.4	1301.6	1200
2025-03-01	1312.6	1275.3	1301.6	1200
2025-02-01	1259.8	1200	1301.6	1200
2025-01-01	1259.8	1200	1301.6	1200
2024-12-01	1259.8	1200	1301.6	1200
2024-11-01	1259.8	1200	1301.6	1200
2024-10-01	1259.8	1200	1301.6	1200
2024-09-01	1259.8	1200	1301.6	1200
2024-11-01	1259.8	1200	1301.6	1200
2024-07-01	1200	1200	1200	1200
2024-06-01	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

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	Western Cape Schools Individual Championship 2025 (U17 Boys)	2025-04-26	2025-04-27	Standard	West Coast (WCU)	6	6	4	Yes	Analysis
2	CT Metro Schools Individual Closed 2025 (U17 Open)	2025-03-01	2025-03-02	Standard	Cape Town (WCT)	6	6	3.5	Yes	Analysis
3	CT Metro North Schools Chess Individual Trials 2025 (U17 Open)	2025-02-08	2025-02-09	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
4	CT District North Top Schools 2024 (U15 Mixed)	2024-07-27	2024-07-27	Rapid	Cape Town (WCT)	5	5	5	Yes	Analysis

#	Games	Start				End
1	7	Tournament CT Metro Schools Individual Closed 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-03-02	rnd 5	type Standard	result 0.5	date 2025-04-27	rnd 5	type Standard	result 1
		Opponent Van Rhyn, A (Aden)				Opponent Jacobs, A (Aiden-Lee)
2	6	Tournament CT District North Top Schools 2024				Tournament CT Metro North Schools Chess Individual Trials 2025
		date 2024-07-27	rnd 1	type Rapid	result 1	date 2025-02-08	rnd 1	type Standard	result 1
		Opponent Cloete, N (Nahum)				Opponent Hare, F (Franscios)
3	3	Tournament CT Metro North Schools Chess Individual Trials 2025				Tournament CT Metro North Schools Chess Individual Trials 2025
		date 2025-02-08	rnd 3	type Standard	result 1	date 2025-02-09	rnd 5	type Standard	result 1
		Opponent O`connell, G (Geordan)				Opponent Watson, C (Cole)

#	Games	Start				End
1	7	Tournament CT Metro Schools Individual Closed 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-03-02	rnd 5	type Standard	result 0.5	date 2025-04-27	rnd 5	type Standard	result 1
		Opponent Van Rhyn, A (Aden)				Opponent Jacobs, A (Aiden-Lee)
2	3	Tournament CT Metro North Schools Chess Individual Trials 2025				Tournament CT Metro North Schools Chess Individual Trials 2025
		date 2025-02-08	rnd 3	type Standard	result 1	date 2025-02-09	rnd 5	type Standard	result 1
		Opponent O`connell, G (Geordan)				Opponent Watson, C (Cole)
3	2	Tournament CT Metro Schools Individual Closed 2025				Tournament CT Metro Schools Individual Closed 2025
		date 2025-03-01	rnd 2	type Standard	result 1	date 2025-03-01	rnd 3	type Standard	result 1
		Opponent Otto, S (Steven)				Opponent Somai, R (Ruhan)

#	Games	Start				End
1	5	Tournament CT District North Top Schools 2024				Tournament CT District North Top Schools 2024
		date 2024-07-27	rnd 1	type Rapid	result 1	date 2024-07-27	rnd 5	type Rapid	result 1
		Opponent Cloete, N (Nahum)				Opponent Faku, P (Phumelela)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament CT District North Top Schools 2024				Tournament CT Metro North Schools Chess Individual Trials 2025
		date 2024-07-27	rnd 1	type Rapid	result 1	date 2025-02-08	rnd 1	type Standard	result 1
		Opponent Cloete, N (Nahum)				Opponent Hare, F (Franscios)
2	3	Tournament CT Metro North Schools Chess Individual Trials 2025				Tournament CT Metro North Schools Chess Individual Trials 2025
		date 2025-02-08	rnd 3	type Standard	result 1	date 2025-02-09	rnd 5	type Standard	result 1
		Opponent O`connell, G (Geordan)				Opponent Watson, C (Cole)
3	2	Tournament Western Cape Schools Individual Championship 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-04-26	rnd 4	type Standard	result 1	date 2025-04-27	rnd 5	type Standard	result 1
		Opponent Mackinna, C (Cashlin)				Opponent Jacobs, A (Aiden-Lee)

#	Games	Start				End
1	3	Tournament CT Metro North Schools Chess Individual Trials 2025				Tournament CT Metro North Schools Chess Individual Trials 2025
		date 2025-02-08	rnd 3	type Standard	result 1	date 2025-02-09	rnd 5	type Standard	result 1
		Opponent O`connell, G (Geordan)				Opponent Watson, C (Cole)
2	2	Tournament Western Cape Schools Individual Championship 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-04-26	rnd 4	type Standard	result 1	date 2025-04-27	rnd 5	type Standard	result 1
		Opponent Mackinna, C (Cashlin)				Opponent Jacobs, A (Aiden-Lee)
3	2	Tournament CT Metro Schools Individual Closed 2025				Tournament CT Metro Schools Individual Closed 2025
		date 2025-03-01	rnd 2	type Standard	result 1	date 2025-03-01	rnd 3	type Standard	result 1
		Opponent Otto, S (Steven)				Opponent Somai, R (Ruhan)

#	Games	Start				End
1	5	Tournament CT District North Top Schools 2024				Tournament CT District North Top Schools 2024
		date 2024-07-27	rnd 1	type Rapid	result 1	date 2024-07-27	rnd 5	type Rapid	result 1
		Opponent Cloete, N (Nahum)				Opponent Faku, P (Phumelela)

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	Solomon ,I (Izaiah)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
1	Solomon ,I (Izaiah)	2	1578.9	1366.4	2	1554.7	1366.4	0	0	0	0	0	0
2	Vorster ,P (Paul)	2	1	0	2	1	0	0	0	0	0	0	0
2	Vorster ,P (Paul)	2	1657.4	1657.4	2	1639.7	1657.4	0	0	0	0	0	0
3	Munnik ,U (Uzziel)	1	1	425	1	1	425	0	0	0	0	0	0
3	Munnik ,U (Uzziel)	1	1273.3	1698.3	1	1271.3	1698.3	0	0	0	0	0	0
4	Jacobs ,A (Aiden-Lee)	1	1	425	1	1	425	0	0	0	0	0	0
4	Jacobs ,A (Aiden-Lee)	1	1482.4	1907.4	1	1423.3	1907.4	0	0	0	0	0	0
5	Jonkers ,T (Tristan)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Jonkers ,T (Tristan)	1	1559.6	1134.6	1	1555	1134.6	0	0	0	0	0	0
6	Watson ,C (Cole)	1	1	425	1	1	425	0	0	0	0	0	0
6	Watson ,C (Cole)	1	1512.5	1937.5	1	1488.7	1937.5	0	0	0	0	0	0
7	Somai ,R (Ruhan)	1	1	425	1	1	425	0	0	0	0	0	0
7	Somai ,R (Ruhan)	1	1536.5	1961.5	1	1525.8	1961.5	0	0	0	0	0	0
8	Du Toit Terblanche ,J (Johannes)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
8	Du Toit Terblanche ,J (Johannes)	1	1565.8	1565.8	1	1600	1565.8	0	0	0	0	0	0
9	Mackinna ,C (Cashlin)	1	1	425	1	1	425	0	0	0	0	0	0
9	Mackinna ,C (Cashlin)	1	1516.8	1941.8	1	1512.3	1941.8	0	0	0	0	0	0
10	Degueldre ,J (Jean-Christian)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Degueldre ,J (Jean-Christian)	1	1683.5	1258.5	1	1693.9	1258.5	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

Petersen, J (Joshua)

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