Chess South Africa Ratings Database

PLAYER PAGE

Personal

Carstens, J (Joshua)

Chess SA id

1090130345

FIDE id

Date of birth

2009-04-11 (U18)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-03

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1310.9

Item	Main	Standard	Rapid	Blitz
Rating	1354.9	1351	1234.2	1200
Raw rating	1354.9	1351	1234.2	1200
Weighted rating	1329.9	1325.2	1234.2	1200
Weighted performance	1284.1	1280.5	0	0
Floor	884.6	888.8	739.6	700
K-factor	36	36	36	36
Min/Max rating change allowed	133	133.7	157.9	165.8
Highest rating	1384.6 2025-03-01	1388.8 2025-03-01	1415.7 2022-05-01	1200 2018-10-01
Highest raw rating	1384.6 2025-03-01	1388.8 2025-03-01	1239.6 2022-06-01	1200 2024-02-01
Highest weighted rating	1325.4 2025-09-01	1320.4 2025-09-01	1239.6 2025-06-01	1200 2018-10-01
Highest weighted performance	1374 2024-09-01	1371.1 2024-09-01	1415.7 2022-05-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1354.9	1351	1234.2	1200
Analysis
Rating	1354.9	1351	1234.2	1200
Raw rating	1354.9	1351	1234.2	1200
Weighted rating	1329.9	1325.2	1234.2
Weighted performance	1284.1	1280.5	0
K-factor	36	36	36	36
Floor	884.6	888.8	739.6	700
Max/Min rating change allowed	133	133.7	157.9	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	1354.9	1351	1234.2	1200
New weighted rating	1334	1329.4	1234.2	1200
New weighted performance	1283.6	1280	0	0
Temp new rating	1354.9	1351	1234.2	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1354.9	1351	1234.2	1200
New K-factor	36	36	36	36
New floor	884.6	888.8	739.6	700

Item	Main	Standard	Rapid
	0	0	0
	16	16	0
	20	20	0
	9	6	3
	9	0	9
	0	0	0
History	59	47	12

Games since
	Main 36	Standard 36		Rapid 0		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	2550		715		303
Male	2058		531		234
U18	422		110		45
U18 Male	361		86		36
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	16	9.5	59.38	79.7	1275	1354.7
Standard	16	9.5	59.38	79.7	1275	1354.7
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	59	34.5	58.47	72	1256.5	1328.5
Standard	47	27.5	58.51	72.3	1268.1	1340.4
Rapid	12	7	58.33	70.8	1211.1	1281.9
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1354.9	1351	1234.2	1200
2025-09-01	1354.9	1351	1234.2	1200
2025-08-01	1327.8	1318.6	1234.2	1200
2025-07-01	1327.8	1318.6	1234.2	1200
2025-06-01	1327.8	1318.6	1234.2	1200
2025-05-01	1327.8	1318.6	1234.2	1200
2025-04-01	1327.8	1318.6	1234.2	1200
2025-03-01	1384.6	1388.8	1234.2	1200
2025-02-01	1359.5	1356.5	1234.2	1200
2025-01-01	1359.5	1356.5	1234.2	1200
2024-12-01	1359.5	1356.5	1234.2	1200
2024-11-01	1359.5	1356.5	1234.2	1200
2024-10-01	1359.5	1356.5	1234.2	1200
2024-09-01	1309.2	1318.7	1234.2	1200
2024-08-01	1309.2	1318.7	1234.2	1200
2024-07-01	1265.6	1261.8	1234.2	1200
2024-06-01	1265.6	1261.8	1234.2	1200
2024-08-01	1265.6	1261.8	1234.2	1200
2024-04-01	1265.6	1261.8	1234.2	1200
2024-03-01	1247.7	1238.8	1234.2	1200
2024-02-01	1211.5	1188.4	1234.2	1200
2024-01-01	1211.5	1188.4	1234.2	1200
2023-12-01	1211.5	1188.4	1234.2	1200
2023-11-01	1211.5	1188.4	1234.2	1200

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	CT Metro District East Top Schools Chess 2025 (U19)	2025-08-02	2025-08-03	Standard	Cape Town (WCT)	5	4	3	Yes	Analysis
2	CT Metro Schools Individual Closed 2025 (U17 Open)	2025-03-01	2025-03-02	Standard	Cape Town (WCT)	6	6	1.5	Yes	Analysis
3	CT Metro District East Schools Chess Individuals Trials 2025 (U18 Boys)	2025-02-01	2025-02-02	Standard	Cape Town (WCT)	6	6	5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	CT Metro District East Top Schools Chess 2025 (U19)	2025-08-02	2025-08-03	Standard	Cape Town (WCT)	5	4	3	Yes	Analysis
2	CT Metro Schools Individual Closed 2025 (U17 Open)	2025-03-01	2025-03-02	Standard	Cape Town (WCT)	6	6	1.5	Yes	Analysis
3	CT Metro District East Schools Chess Individuals Trials 2025 (U18 Boys)	2025-02-01	2025-02-02	Standard	Cape Town (WCT)	6	6	5	Yes	Analysis
4	Western Cape Top Schools Championship 2024 (U15 Mixed)	2024-08-30	2024-09-01	Standard	Eden (WEG)	6	4	3	Yes	Analysis
5	CT Metro District East Top Schools Chess 2024 (U15 Mixed)	2024-07-27	2024-07-28	Standard	Cape Town (WCT)	7	6	5	Yes	Analysis
6	Cape Town Metro Schools Chess Closed Individuals 2024 (U15 Boys)	2024-03-02	2024-03-03	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
7	CT District East Schools Chess Individuals Trails 2024 (U15 Boys)	2024-02-03	2024-02-03	Standard	Cape Town (WCT)	5	4	3	Yes	Analysis
8	Western Cape Top Schools 2023 (U15 Mixed)	2023-09-02	2023-09-03	Standard	Cape Winelands (WCW)	6	6	2	Yes	Analysis
9	CT Metro District East Top Schools Chess 2023 (U15 Mixed)	2023-07-29	2023-07-29	Rapid	Cape Town (WCT)	3	3	2	Yes	Analysis
10	Metro Rapid 2022 (U13 Boys)	2022-10-22	2022-10-22	Rapid	Cape Town (WCT)	5	5	2	Yes	Analysis
11	Rhenish Primary Tournament 2022 (U14)	2022-05-14	2022-05-14	Rapid	Cape Winelands (WCW)	5	4	3	Yes	Analysis
12	2020 East District Individuals (U11)	2020-01-31	2020-02-01	Standard	Cape Town (WCT)	6	5	2	Yes	Analysis

#	Games	Start				End
1	6	Tournament CT Metro District East Schools Chess Individuals Trials 2025				Tournament CT Metro Schools Individual Closed 2025
		date 2025-02-01	rnd 2	type Standard	result 1	date 2025-03-01	rnd 1	type Standard	result 0.5
		Opponent Philander, A (Adam)				Opponent Engelbrecht, X (Xander)
2	5	Tournament Cape Town Metro Schools Chess Closed Individuals 2024				Tournament CT Metro District East Top Schools Chess 2024
		date 2024-03-03	rnd 6	type Standard	result 1	date 2024-07-28	rnd 5	type Standard	result 1
		Opponent Groenewaldt, O (Orren)				Opponent Sachikunda, D (Dephine)
3	3	Tournament Western Cape Top Schools Championship 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-08-30	rnd 4	type Standard	result 1	date 2024-09-01	rnd 6	type Standard	result 1
		Opponent Goosen, R (Ruan)				Opponent Bless, S (Siyolise)

#	Games	Start				End
1	6	Tournament CT Metro District East Schools Chess Individuals Trials 2025				Tournament CT Metro Schools Individual Closed 2025
		date 2025-02-01	rnd 2	type Standard	result 1	date 2025-03-01	rnd 1	type Standard	result 0.5
		Opponent Philander, A (Adam)				Opponent Engelbrecht, X (Xander)
2	5	Tournament Cape Town Metro Schools Chess Closed Individuals 2024				Tournament CT Metro District East Top Schools Chess 2024
		date 2024-03-03	rnd 6	type Standard	result 1	date 2024-07-28	rnd 5	type Standard	result 1
		Opponent Groenewaldt, O (Orren)				Opponent Sachikunda, D (Dephine)
3	3	Tournament Western Cape Top Schools Championship 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-08-30	rnd 4	type Standard	result 1	date 2024-09-01	rnd 6	type Standard	result 1
		Opponent Goosen, R (Ruan)				Opponent Bless, S (Siyolise)

#	Games	Start				End
1	3	Tournament Rhenish Primary Tournament 2022				Tournament Rhenish Primary Tournament 2022
		date 2022-05-14	rnd 3	type Rapid	result 1	date 2022-05-14	rnd 5	type Rapid	result 1
		Opponent Siebretz, Q (Qeugh)				Opponent Green, N (Nicholas)
2	2	Tournament CT Metro District East Top Schools Chess 2023				Tournament CT Metro District East Top Schools Chess 2023
		date 2023-07-29	rnd 2	type Rapid	result 1	date 2023-07-29	rnd 3	type Rapid	result 1
		Opponent Sambo, A (Alex)				Opponent Joubert, C (Carla Louise)
3	1	Tournament Metro Rapid 2022				Tournament Metro Rapid 2022
		date 2022-10-22	rnd 4	type Rapid	result 1	date 2022-10-22	rnd 4	type Rapid	result 1
		Opponent Petersen, M (Mathew)				Opponent Petersen, M (Mathew)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament CT Metro District East Schools Chess Individuals Trials 2025				Tournament CT Metro District East Schools Chess Individuals Trials 2025
		date 2025-02-01	rnd 2	type Standard	result 1	date 2025-02-02	rnd 6	type Standard	result 1
		Opponent Philander, A (Adam)				Opponent Makhalime, B (Brian)
2	5	Tournament Cape Town Metro Schools Chess Closed Individuals 2024				Tournament CT Metro District East Top Schools Chess 2024
		date 2024-03-03	rnd 6	type Standard	result 1	date 2024-07-28	rnd 5	type Standard	result 1
		Opponent Groenewaldt, O (Orren)				Opponent Sachikunda, D (Dephine)
3	3	Tournament Western Cape Top Schools Championship 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-08-30	rnd 4	type Standard	result 1	date 2024-09-01	rnd 6	type Standard	result 1
		Opponent Goosen, R (Ruan)				Opponent Bless, S (Siyolise)

#	Games	Start				End
1	5	Tournament CT Metro District East Schools Chess Individuals Trials 2025				Tournament CT Metro District East Schools Chess Individuals Trials 2025
		date 2025-02-01	rnd 2	type Standard	result 1	date 2025-02-02	rnd 6	type Standard	result 1
		Opponent Philander, A (Adam)				Opponent Makhalime, B (Brian)
2	5	Tournament Cape Town Metro Schools Chess Closed Individuals 2024				Tournament CT Metro District East Top Schools Chess 2024
		date 2024-03-03	rnd 6	type Standard	result 1	date 2024-07-28	rnd 5	type Standard	result 1
		Opponent Groenewaldt, O (Orren)				Opponent Sachikunda, D (Dephine)
3	3	Tournament Western Cape Top Schools Championship 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-08-30	rnd 4	type Standard	result 1	date 2024-09-01	rnd 6	type Standard	result 1
		Opponent Goosen, R (Ruan)				Opponent Bless, S (Siyolise)

#	Games	Start				End
1	3	Tournament Rhenish Primary Tournament 2022				Tournament Rhenish Primary Tournament 2022
		date 2022-05-14	rnd 3	type Rapid	result 1	date 2022-05-14	rnd 5	type Rapid	result 1
		Opponent Siebretz, Q (Qeugh)				Opponent Green, N (Nicholas)
2	2	Tournament CT Metro District East Top Schools Chess 2023				Tournament CT Metro District East Top Schools Chess 2023
		date 2023-07-29	rnd 2	type Rapid	result 1	date 2023-07-29	rnd 3	type Rapid	result 1
		Opponent Sambo, A (Alex)				Opponent Joubert, C (Carla Louise)
3	1	Tournament Metro Rapid 2022				Tournament Metro Rapid 2022
		date 2022-10-22	rnd 4	type Rapid	result 1	date 2022-10-22	rnd 4	type Rapid	result 1
		Opponent Petersen, M (Mathew)				Opponent Petersen, M (Mathew)

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	Priestley ,L (Logan)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Priestley ,L (Logan)	2	1553.8	1128.8	2	1597.5	1128.8	0	0	0	0	0	0
2	Van Schalkwyk ,M (Marshall)	2	1	0	2	1	0	0	0	0	0	0	0
2	Van Schalkwyk ,M (Marshall)	2	1216.9	1216.9	2	1219.3	1216.9	0	0	0	0	0	0
3	De Wit ,M (Marnus)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	De Wit ,M (Marnus)	1	1599	1174	1	1587.2	1174	0	0	0	0	0	0
4	Brink ,S (Samantha)	1	1	425	1	1	425	0	0	0	0	0	0
4	Brink ,S (Samantha)	1	1323.8	1748.8	1	1390.8	1748.8	0	0	0	0	0	0
5	Bantam ,J (Jaden-Leigh)	1	1	425	1	1	425	0	0	0	0	0	0
5	Bantam ,J (Jaden-Leigh)	1	1181.2	1606.2	1	1175.2	1606.2	0	0	0	0	0	0
6	Mabala ,L (Liyema)	1	1	425	1	1	425	0	0	0	0	0	0
6	Mabala ,L (Liyema)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Ntozini ,L (Luphawu)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Ntozini ,L (Luphawu)	1	1200	775	1	1200	775	0	0	0	0	0	0
8	Adams ,K (Kyron)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Adams ,K (Kyron)	1	1422.4	997.4	1	1388.9	997.4	0	0	0	0	0	0
9	Garratt ,K (Kaleb)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Garratt ,K (Kaleb)	1	1200	775	1	1200	775	0	0	0	0	0	0
10	Meyer ,L (Logan)	1	1	425	1	1	425	0	0	0	0	0	0
10	Meyer ,L (Logan)	1	1359.2	1784.2	1	1366.3	1784.2	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Carstens, 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