Chess South Africa Ratings Database

PLAYER PAGE

Personal

Groenewald, S (Stefan)

Chess SA id

1100326261

FIDE id

Date of birth

2010-01-03 (U16)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-16

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1205.1

Item	Main	Standard	Rapid	Blitz
Rating	1205	1198.4	1200	1200
Raw rating	1205	1193.1	1200	1200
Weighted rating	1202	1198.4	1200	1200
Weighted performance	1031.1	996	0	0
Floor	719.3	700.4	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	164.6	167.5	165.8	165.8
Highest rating	1219.3 2025-08-23	1200.4 2025-08-23	1200 2025-08-23	1200 2025-08-23
Highest raw rating	1219.3 2025-08-23	1200.4 2025-08-23	1200 2025-08-23	1200 2025-08-23
Highest weighted rating	1219.3 2025-08-23	1200.4 2025-08-23	1200 2025-08-23	1200 2025-08-23
Highest weighted performance	1200 2025-08-23	1200 2025-08-23	1200 2025-08-23	1200 2025-08-23

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	-0.5	0	0
New rating	1205	1197.9	1200	1200
Analysis
Rating	1205	1198.4	1200	1200
Raw rating	1205	1193.1	1200	1200
Weighted rating	1202	1198.4	1200
Weighted performance	1031.1	996	0
K-factor	36	36	36	36
Floor	719.3	700.4	700	700
Max/Min rating change allowed	164.6	167.5	165.8	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	1205	1193.1	1200	1200
New weighted rating	1202.3	1197.9	1200	1200
New weighted performance	1024.1	989.1	0	0
Temp new rating	1205	1197.9	1200	1200
Temp new rating +/-	0	-0.5	0	0
Final new rating +/-	0	-0.5	0	0
New rating	1205	1197.9	1200	1200
New K-factor	36	36	36	36
New floor	719.3	700.4	700	700

Item	Main	Standard	Rapid
	0	0	0
	10	10	0
	5	5	0
	5	5	0
	7	0	7
	0	0	0
History	32	25	7

Games since
	Main 15	Standard 15		Rapid 0		Blitz 0
Gender	M
Age group	U16
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
M	-1		-1		-1
U16	-1		-1		-1
U16 M	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
M	-1		-1		-1
U16	-1		-1		-1
U16 M	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
M	-1		-1		-1
U16	-1		-1		-1
U16 M	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
M	-1		-1		-1
U16	-1		-1		-1
U16 M	-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	10	3.5	35	-127.5	1334.4	1206.9
Standard	10	3.5	35	-127.5	1334.4	1206.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	32	15	46.88	-26.6	1236.8	1210.3
Standard	25	11	44	-51	1242	1191
Rapid	7	4	57.14	60.7	1218.4	1279.1
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1205	1193.1	1200	1200
2025-09-30	1205	1193.1	1200	1200
2025-09-01	1205	1193.1	1200	1200
2025-08-01	1212.3	1200	1200	1200
2025-07-01	1200	1200	1200	1200
2025-06-01	1200	1200	1200	1200
2025-05-01	1200	1200	1200	1200
2025-04-01	1200	1200	1200	1200
2025-03-01	1200	1200	1200	1200
2025-02-01	1200	1200	1200	1200
2025-01-01	1200	1200	1200	1200
2024-12-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-10-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-09-01	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
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	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	2025 Tshwane South School District CLOSED League Championship (U15A)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	5	1.5	Yes	Analysis
2	2025 Tshwane South School District Individual Finals (D4) (U15 Boys)	2025-05-10	2025-05-10	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Tshwane South School District CLOSED League Championship (U15A)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	5	1.5	Yes	Analysis
2	2025 Tshwane South School District Individual Finals (D4) (U15 Boys)	2025-05-10	2025-05-10	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
3	2024 Constantiapark Open (C)	2024-02-17	2024-02-17	Standard	Tshwane (GTP)	5	5	1.5	Yes	Analysis
4	2023 Tshwane South School District CLOSED Individual Championships (U13 Open)	2023-04-22	2023-04-22	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
5	D4 Individuals 2022 (U13 Open)	2022-04-23	2022-04-23	Rapid	Tshwane (GTP)	7	7	4	Yes	Analysis
6	2019 D4 Individual Finals (U9 Mixed)	2019-03-09	2019-03-09	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis

#	Games	Start				End
1	3	Tournament D4 Individuals 2022				Tournament 2023 Tshwane South School District CLOSED Individual Championships
		date 2022-04-23	rnd 6	type Rapid	result 1	date 2023-04-22	rnd 1	type Standard	result 1
		Opponent Naicker, H (Hoovasen)				Opponent De Meyer, M (Marius)
2	2	Tournament 2025 Tshwane South School District CLOSED League Championship				Tournament 2025 Tshwane South School District CLOSED League Championship
		date 2025-08-16	rnd 4	type Standard	result 1	date 2025-08-16	rnd 5	type Standard	result 0.5
		Opponent Mandaza, C (Clint)				Opponent Legodi, M (Moloko)
3	2	Tournament 2024 Constantiapark Open				Tournament 2024 Constantiapark Open
		date 2024-02-17	rnd 2	type Standard	result 1	date 2024-02-17	rnd 3	type Standard	result 0.5
		Opponent Barkhuizen, SJ (Simon Jurgens)				Opponent De Roos, H (Hubert)

#	Games	Start				End
1	2	Tournament 2025 Tshwane South School District CLOSED League Championship				Tournament 2025 Tshwane South School District CLOSED League Championship
		date 2025-08-16	rnd 4	type Standard	result 1	date 2025-08-16	rnd 5	type Standard	result 0.5
		Opponent Mandaza, C (Clint)				Opponent Legodi, M (Moloko)
2	2	Tournament 2024 Constantiapark Open				Tournament 2024 Constantiapark Open
		date 2024-02-17	rnd 2	type Standard	result 1	date 2024-02-17	rnd 3	type Standard	result 0.5
		Opponent Barkhuizen, SJ (Simon Jurgens)				Opponent De Roos, H (Hubert)
3	2	Tournament 2023 Tshwane South School District CLOSED Individual Championships				Tournament 2023 Tshwane South School District CLOSED Individual Championships
		date 2023-04-22	rnd 4	type Standard	result 1	date 2023-04-22	rnd 5	type Standard	result 1
		Opponent Richards, K (Kobus)				Opponent De Wet, L (Lambert Hugo)

#	Games	Start				End
1	2	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 6	type Rapid	result 1	date 2022-04-23	rnd 7	type Rapid	result 1
		Opponent Naicker, H (Hoovasen)				Opponent Van Staden, R (Rikus)
2	1	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 4	type Rapid	result 1	date 2022-04-23	rnd 4	type Rapid	result 1
		Opponent Matthee, WD (William)				Opponent Matthee, WD (William)
3	1	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 2	type Rapid	result 1	date 2022-04-23	rnd 2	type Rapid	result 1
		Opponent Coetzee, C (Cuan)				Opponent Coetzee, C (Cuan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament D4 Individuals 2022				Tournament 2023 Tshwane South School District CLOSED Individual Championships
		date 2022-04-23	rnd 6	type Rapid	result 1	date 2023-04-22	rnd 1	type Standard	result 1
		Opponent Naicker, H (Hoovasen)				Opponent De Meyer, M (Marius)
2	2	Tournament 2023 Tshwane South School District CLOSED Individual Championships				Tournament 2023 Tshwane South School District CLOSED Individual Championships
		date 2023-04-22	rnd 4	type Standard	result 1	date 2023-04-22	rnd 5	type Standard	result 1
		Opponent Richards, K (Kobus)				Opponent De Wet, L (Lambert Hugo)
3	2	Tournament 2019 D4 Individual Finals				Tournament 2019 D4 Individual Finals
		date 2019-03-09	rnd 2	type Standard	result 1	date 2019-03-09	rnd 3	type Standard	result 1
		Opponent Redelinghuys, A (Ayden)				Opponent Du Preez, J (Julian)

#	Games	Start				End
1	2	Tournament 2023 Tshwane South School District CLOSED Individual Championships				Tournament 2023 Tshwane South School District CLOSED Individual Championships
		date 2023-04-22	rnd 4	type Standard	result 1	date 2023-04-22	rnd 5	type Standard	result 1
		Opponent Richards, K (Kobus)				Opponent De Wet, L (Lambert Hugo)
2	2	Tournament 2019 D4 Individual Finals				Tournament 2023 Tshwane South School District CLOSED Individual Championships
		date 2019-03-09	rnd 5	type Standard	result 1	date 2023-04-22	rnd 1	type Standard	result 1
		Opponent Lourens, J (Jurgen)				Opponent De Meyer, M (Marius)
3	2	Tournament 2019 D4 Individual Finals				Tournament 2019 D4 Individual Finals
		date 2019-03-09	rnd 2	type Standard	result 1	date 2019-03-09	rnd 3	type Standard	result 1
		Opponent Redelinghuys, A (Ayden)				Opponent Du Preez, J (Julian)

#	Games	Start				End
1	2	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 6	type Rapid	result 1	date 2022-04-23	rnd 7	type Rapid	result 1
		Opponent Naicker, H (Hoovasen)				Opponent Van Staden, R (Rikus)
2	1	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 4	type Rapid	result 1	date 2022-04-23	rnd 4	type Rapid	result 1
		Opponent Matthee, WD (William)				Opponent Matthee, WD (William)
3	1	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 2	type Rapid	result 1	date 2022-04-23	rnd 2	type Rapid	result 1
		Opponent Coetzee, C (Cuan)				Opponent Coetzee, C (Cuan)

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	Du Preez ,J (Julian)	2	1	0	2	1	0	0	0	0	0	0	0
1	Du Preez ,J (Julian)	2	1210.1	1210.1	2	1185.2	1210.1	0	0	0	0	0	0
2	Vermeulen ,G (George Francis)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Vermeulen ,G (George Francis)	1	1199.3	774.3	1	1199.2	774.3	0	0	0	0	0	0
3	Jacobs ,H (Hanno)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Jacobs ,H (Hanno)	1	1042.7	617.7	1	1020.4	617.7	0	0	0	0	0	0
4	Badenhorst ,M (Michael)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Badenhorst ,M (Michael)	1	1151.5	726.5	1	1141.3	726.5	0	0	0	0	0	0
5	Keyter ,ZC (Zarius Clarence)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Keyter ,ZC (Zarius Clarence)	1	1454.7	1029.7	1	1457.1	1029.7	0	0	0	0	0	0
6	Richards ,K (Kobus)	1	1	425	1	1	425	0	0	0	0	0	0
6	Richards ,K (Kobus)	1	1182.1	1607.1	1	1176	1607.1	0	0	0	0	0	0
7	De Roos ,H (Hubert)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
7	De Roos ,H (Hubert)	1	1298.1	1298.1	1	1288.1	1298.1	0	0	0	0	0	0
8	De Beer ,L (Liam)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	De Beer ,L (Liam)	1	1350	925	1	1335.5	925	0	0	0	0	0	0
9	Appel ,J (Jandre)	1	1	425	1	1	425	0	0	0	0	0	0
9	Appel ,J (Jandre)	1	1240.7	1665.7	1	1238.1	1665.7	0	0	0	0	0	0
10	Feuth ,A (Alexander)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Feuth ,A (Alexander)	1	1513.8	1088.8	1	1512.1	1088.8	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Groenewald, S (Stefan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms