Chess South Africa Ratings Database

PLAYER PAGE

Personal

Groenewald, J (Joshua)

Chess SA id

1100097158

FIDE id

Date of birth

2010-06-28 (U16)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-02-18

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1220.6	1242	1178.7	1200
Raw rating	1220.6	1242	1178.7	1200
Weighted rating	1220.6	1242	1178.7	1200
Weighted performance	0	0	0	0
Floor	720.6	742	714	700
K-factor	36	36	36	36
Min/Max rating change allowed	161	156.2	170.9	165.8
Highest rating	1220.6 2024-02-01	1242 2024-02-01	1214 2018-03-01	1200 2018-10-01
Highest raw rating	1220.6 2024-02-01	1242 2024-02-01	1214 2018-03-01	1200 2024-02-01
Highest weighted rating	1220.6 2025-02-01	1242 2025-02-01	1214 2018-03-01	1200 2018-10-01
Highest weighted performance	1200 2024-12-01	1200 2018-02-01	1200 2024-12-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1220.6	1242	1178.7	1200
Analysis
Rating	1220.6	1242	1178.7	1200
Raw rating	1220.6	1242	1178.7	1200
Weighted rating	1220.6	1242	1178.7
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	720.6	742	714	700
Max/Min rating change allowed	161	156.2	170.9	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	1220.6	1242	1178.7	1200
New weighted rating	1220.6	1242	1178.7	1200
New weighted performance	0	0	0	0
Temp new rating	1220.6	1242	1178.7	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1220.6	1242	1178.7	1200
New K-factor	36	36	36	36
New floor	720.6	742	714	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	5	5	0
	0	0	0
	0	0	0
History	23	12	11

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 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	23	15	65.22	129.3	1065.1	1194.5
Standard	12	8	66.67	141.7	1125.8	1267.5
Rapid	11	7	63.64	115.9	999	1114.9
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1220.6	1242	1178.7	1200
2025-09-30	1220.6	1242	1178.7	1200
2025-09-01	1220.6	1242	1178.7	1200
2025-08-01	1220.6	1242	1178.7	1200
2025-07-01	1220.6	1242	1178.7	1200
2025-06-01	1220.6	1242	1178.7	1200
2025-05-01	1220.6	1242	1178.7	1200
2025-04-01	1220.6	1242	1178.7	1200
2025-03-01	1220.6	1242	1178.7	1200
2025-02-01	1220.6	1242	1178.7	1200
2025-01-01	1220.6	1242	1178.7	1200
2024-12-01	1220.6	1242	1178.7	1200
2024-11-01	1220.6	1242	1178.7	1200
2024-10-01	1220.6	1242	1178.7	1200
2024-09-01	1220.6	1242	1178.7	1200
2024-08-01	1220.6	1242	1178.7	1200
2024-07-01	1220.6	1242	1178.7	1200
2024-09-01	1220.6	1242	1178.7	1200
2024-05-01	1220.6	1242	1178.7	1200
2024-04-01	1220.6	1242	1178.7	1200
2024-03-01	1220.6	1242	1178.7	1200
2024-02-01	1220.6	1242	1178.7	1200
2024-01-01	1220.6	1242	1178.7	1200
2023-12-01	1220.6	1242	1178.7	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	Cape Winelands Schools Chess - Trials 1 2023 (U13 Boys)	2023-02-18	2023-02-18	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
2	Cape Winelands Schools Trials 1 2018 (U9 Boys)	2018-03-03	2018-03-03	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
3	Cape Winelands Schools Prestige 2018 (U9 Boys)	2018-03-24	2018-03-25	Standard	Cape Winelands (WCW)	7	7	4	Yes	Analysis
4	North Boland Trials 2018 (U9 Boys)	2018-02-17	2018-02-17	Rapid	Cape Winelands (WCW)	5	5	4	Yes	Analysis

#	Games	Start				End
1	4	Tournament North Boland Trials 2018				Tournament North Boland Trials 2018
		date 2018-02-17	rnd 1	type Rapid	result 1	date 2018-02-17	rnd 4	type Rapid	result 1
		Opponent Siswana, L (Leighton)				Opponent Harris, G (George)
2	3	Tournament Cape Winelands Schools Prestige 2018				Tournament Cape Winelands Schools Prestige 2018
		date 2018-03-24	rnd 2	type Standard	result 1	date 2018-03-24	rnd 4	type Standard	result 1
		Opponent Ntsukwana, A (Anqobile)				Opponent Mapingana, A (Alakhe)
3	3	Tournament Cape Winelands Schools Trials 1 2018				Tournament Cape Winelands Schools Trials 1 2018
		date 2018-03-03	rnd 3	type Rapid	result 1	date 2018-03-03	rnd 5	type Rapid	result 1
		Opponent Harris, G (George)				Opponent De Kock, S (Stephan)

#	Games	Start				End
1	3	Tournament Cape Winelands Schools Prestige 2018				Tournament Cape Winelands Schools Prestige 2018
		date 2018-03-24	rnd 2	type Standard	result 1	date 2018-03-24	rnd 4	type Standard	result 1
		Opponent Ntsukwana, A (Anqobile)				Opponent Mapingana, A (Alakhe)
2	2	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-18	rnd 4	type Standard	result 1	date 2023-02-18	rnd 5	type Standard	result 1
		Opponent Uys, K (Kayde)				Opponent Moerat, N (Na-Eem)
3	2	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-18	rnd 1	type Standard	result 1	date 2023-02-18	rnd 2	type Standard	result 1
		Opponent Jacobs, Z (Zuan-Lee)				Opponent Ntsondwa, L (Lunika)

#	Games	Start				End
1	4	Tournament North Boland Trials 2018				Tournament North Boland Trials 2018
		date 2018-02-17	rnd 1	type Rapid	result 1	date 2018-02-17	rnd 4	type Rapid	result 1
		Opponent Siswana, L (Leighton)				Opponent Harris, G (George)
2	3	Tournament Cape Winelands Schools Trials 1 2018				Tournament Cape Winelands Schools Trials 1 2018
		date 2018-03-03	rnd 3	type Rapid	result 1	date 2018-03-03	rnd 5	type Rapid	result 1
		Opponent Harris, G (George)				Opponent De Kock, S (Stephan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament North Boland Trials 2018				Tournament North Boland Trials 2018
		date 2018-02-17	rnd 1	type Rapid	result 1	date 2018-02-17	rnd 4	type Rapid	result 1
		Opponent Siswana, L (Leighton)				Opponent Harris, G (George)
2	3	Tournament Cape Winelands Schools Prestige 2018				Tournament Cape Winelands Schools Prestige 2018
		date 2018-03-24	rnd 2	type Standard	result 1	date 2018-03-24	rnd 4	type Standard	result 1
		Opponent Ntsukwana, A (Anqobile)				Opponent Mapingana, A (Alakhe)
3	3	Tournament Cape Winelands Schools Trials 1 2018				Tournament Cape Winelands Schools Trials 1 2018
		date 2018-03-03	rnd 3	type Rapid	result 1	date 2018-03-03	rnd 5	type Rapid	result 1
		Opponent Harris, G (George)				Opponent De Kock, S (Stephan)

#	Games	Start				End
1	3	Tournament Cape Winelands Schools Prestige 2018				Tournament Cape Winelands Schools Prestige 2018
		date 2018-03-24	rnd 2	type Standard	result 1	date 2018-03-24	rnd 4	type Standard	result 1
		Opponent Ntsukwana, A (Anqobile)				Opponent Mapingana, A (Alakhe)
2	2	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-18	rnd 4	type Standard	result 1	date 2023-02-18	rnd 5	type Standard	result 1
		Opponent Uys, K (Kayde)				Opponent Moerat, N (Na-Eem)
3	2	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-18	rnd 1	type Standard	result 1	date 2023-02-18	rnd 2	type Standard	result 1
		Opponent Jacobs, Z (Zuan-Lee)				Opponent Ntsondwa, L (Lunika)

#	Games	Start				End
1	4	Tournament North Boland Trials 2018				Tournament North Boland Trials 2018
		date 2018-02-17	rnd 1	type Rapid	result 1	date 2018-02-17	rnd 4	type Rapid	result 1
		Opponent Siswana, L (Leighton)				Opponent Harris, G (George)
2	3	Tournament Cape Winelands Schools Trials 1 2018				Tournament Cape Winelands Schools Trials 1 2018
		date 2018-03-03	rnd 3	type Rapid	result 1	date 2018-03-03	rnd 5	type Rapid	result 1
		Opponent Harris, G (George)				Opponent De Kock, S (Stephan)

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	Mapingana ,A (Alakhe)	3	2	141.7	1	1	425	2	1	0	0	0	0
1	Mapingana ,A (Alakhe)	3	726.6	868.2	1	624.4	1151.6	2	638.8	726.6	0	0	0
2	Kriel ,M (Marnus Juan)	2	1	0	1	1	425	1	0	-425	0	0	0
2	Kriel ,M (Marnus Juan)	2	1162.1	1162.1	1	1200	1587.1	1	1099.6	737.1	0	0	0
3	Geldenhuys ,L (Leathon)	2	0	-425	1	0	-425	1	0	-425	0	0	0
3	Geldenhuys ,L (Leathon)	2	822.6	397.6	1	727.8	397.6	1	934.6	397.6	0	0	0
4	Harris ,G (George)	2	2	425	0	0	0	2	2	425	0	0	0
4	Harris ,G (George)	2	1200	1625	0	0	0	2	1200	1625	0	0	0
5	Ntsondwa ,L (Lunika)	1	1	425	1	1	425	0	0	0	0	0	0
5	Ntsondwa ,L (Lunika)	1	1172.5	1597.5	1	1200.8	1597.5	0	0	0	0	0	0
6	Willis ,C (Cronan)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Willis ,C (Cronan)	1	1004.5	579.5	1	972.4	579.5	0	0	0	0	0	0
7	Van Tonder ,P (Pieter-Louw)	1	1	425	1	1	425	0	0	0	0	0	0
7	Van Tonder ,P (Pieter-Louw)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Zungula ,C (Chulumanco)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Zungula ,C (Chulumanco)	1	1186.6	761.6	1	1200	761.6	0	0	0	0	0	0
9	Jacobs ,Z (Zuan-Lee)	1	1	425	1	1	425	0	0	0	0	0	0
9	Jacobs ,Z (Zuan-Lee)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Ntsukwana ,A (Anqobile)	1	1	425	1	1	425	0	0	0	0	0	0
10	Ntsukwana ,A (Anqobile)	1	1200	1625	1	1200	1625	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Groenewald, 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