Chess South Africa Ratings Database

PLAYER PAGE

Personal

Groenewald, R (Ruan)

Chess SA id

1080135388

FIDE id

Date of birth

2008-05-05 (U18)

Gender

Male

Region

Ekurhuleni (GE)

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

Item	Main	Standard	Rapid	Blitz
Rating	1255.1	1252.2	1200	1200
Raw rating	1255.1	1252.2	1200	1200
Weighted rating	1229.1	1218.9	1200	1200
Weighted performance	1084.4	1076.3	0	0
Floor	755.1	752.2	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	153.3	153.9	165.8	165.8
Highest rating	1255.1 2025-09-01	1252.2 2025-09-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1255.1 2025-09-01	1252.2 2025-09-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1229.3 2024-02-01	1219.5 2024-02-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1243.8 2022-01-01	1218.9 2022-01-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1255.1	1252.2	1200	1200
Analysis
Rating	1255.1	1252.2	1200	1200
Raw rating	1255.1	1252.2	1200	1200
Weighted rating	1229.1	1218.9	1200
Weighted performance	1084.4	1076.3	0
K-factor	36	36	36	36
Floor	755.1	752.2	700	700
Max/Min rating change allowed	153.3	153.9	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	1255.1	1252.2	1200	1200
New weighted rating	1231.6	1222	1200	1200
New weighted performance	1083.9	1075.8	0	0
Temp new rating	1255.1	1252.2	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1255.1	1252.2	1200	1200
New K-factor	36	36	36	36
New floor	755.1	752.2	700	700

Item	Main	Standard
	0	0
	4	4
	10	10
	0	0
	11	11
	10	10
History	35	35

Games since
	Main 14	Standard 14		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
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	4	3	75	212.5	1200	1412.5
Standard	4	3	75	212.5	1200	1412.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	35	18	51.43	12.1	1241	1253.1
Standard	35	18	51.43	12.1	1241	1253.1
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1255.1	1252.2	1200	1200
2025-09-01	1255.1	1252.2	1200	1200
2025-08-01	1229.3	1219.5	1200	1200
2025-07-01	1229.3	1219.5	1200	1200
2025-06-01	1229.3	1219.5	1200	1200
2025-05-01	1229.3	1219.5	1200	1200
2025-04-01	1229.3	1219.5	1200	1200
2025-03-01	1229.3	1219.5	1200	1200
2025-02-01	1229.3	1219.5	1200	1200
2025-01-01	1229.3	1219.5	1200	1200
2024-12-01	1229.3	1219.5	1200	1200
2024-11-01	1229.3	1219.5	1200	1200
2024-10-01	1229.3	1219.5	1200	1200
2024-09-01	1229.3	1219.5	1200	1200
2024-08-01	1201.8	1181.3	1200	1200
2024-07-01	1201.8	1181.3	1200	1200
2024-06-01	1201.8	1181.3	1200	1200
2024-08-01	1201.8	1181.3	1200	1200
2024-04-01	1201.8	1181.3	1200	1200
2024-03-01	1201.8	1181.3	1200	1200
2024-02-01	1225.4	1218.4	1200	1200
2024-01-01	1225.4	1218.4	1200	1200
2023-12-01	1225.4	1218.4	1200	1200
2023-11-01	1225.4	1218.4	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 (U19B)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	4	3	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 (U19B)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	4	3	Yes	Analysis
2	D4 Tshwane South District Schools Teams Chess Tournament 2024 (U19B)	2024-08-03	2024-08-03	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
3	Grey College Team Championship 2024 (A)	2024-02-23	2024-02-24	Standard	Mangaung (FMB)	5	5	1	Yes	Analysis
4	2022 Gauteng Schools Team Championships (U19 Open)	2022-08-26	2022-08-26	Standard	Tshwane (GTP)	5	1	0.5	Yes	Analysis
5	2022 Gauteng Interregion (U14 Open)	2022-02-26	2022-02-26	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
6	Ekurhuleni Chess Open 2022 (C)	2022-01-08	2022-01-08	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
7	Ekurhuleni Trials (3)	2021-11-06	2021-11-06	Standard	Ekurhuleni (GE)	5	5	2.5	Yes	Analysis
8	Ekurhuleni North Schools District Finals 2021 (U13 Boys)	2021-09-11	2021-09-11	Standard	Ekurhuleni (GE)	5	5	2.5	Yes	Analysis

#	Games	Start				End
1	4	Tournament Grey College Team Championship 2024				Tournament D4 Tshwane South District Schools Teams Chess Tournament 2024
		date 2024-02-24	rnd 5	type Standard	result 1	date 2024-08-03	rnd 3	type Standard	result 1
		Opponent Mohobane, L (Lebajoa)				Opponent Child, H (Henry)
2	3	Tournament D4 Tshwane South District Schools Teams Chess Tournament 2024				Tournament 2025 Tshwane South School District CLOSED League Championship
		date 2024-08-03	rnd 5	type Standard	result 0.5	date 2025-08-16	rnd 3	type Standard	result 1
		Opponent Matshinyatsimbi, T (Thendo)				Opponent Pieters, K (Kayla)
3	3	Tournament Ekurhuleni Chess Open 2022				Tournament 2022 Gauteng Interregion
		date 2022-01-08	rnd 4	type Standard	result 1	date 2022-02-26	rnd 1	type Standard	result 1
		Opponent De Goveia, D (Dominic)				Opponent Yang, A (Alex)

#	Games	Start				End
1	4	Tournament Grey College Team Championship 2024				Tournament D4 Tshwane South District Schools Teams Chess Tournament 2024
		date 2024-02-24	rnd 5	type Standard	result 1	date 2024-08-03	rnd 3	type Standard	result 1
		Opponent Mohobane, L (Lebajoa)				Opponent Child, H (Henry)
2	3	Tournament D4 Tshwane South District Schools Teams Chess Tournament 2024				Tournament 2025 Tshwane South School District CLOSED League Championship
		date 2024-08-03	rnd 5	type Standard	result 0.5	date 2025-08-16	rnd 3	type Standard	result 1
		Opponent Matshinyatsimbi, T (Thendo)				Opponent Pieters, K (Kayla)
3	3	Tournament Ekurhuleni Chess Open 2022				Tournament 2022 Gauteng Interregion
		date 2022-01-08	rnd 4	type Standard	result 1	date 2022-02-26	rnd 1	type Standard	result 1
		Opponent De Goveia, D (Dominic)				Opponent Yang, A (Alex)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Grey College Team Championship 2024				Tournament D4 Tshwane South District Schools Teams Chess Tournament 2024
		date 2024-02-24	rnd 5	type Standard	result 1	date 2024-08-03	rnd 3	type Standard	result 1
		Opponent Mohobane, L (Lebajoa)				Opponent Child, H (Henry)
2	3	Tournament Ekurhuleni Chess Open 2022				Tournament 2022 Gauteng Interregion
		date 2022-01-08	rnd 4	type Standard	result 1	date 2022-02-26	rnd 1	type Standard	result 1
		Opponent De Goveia, D (Dominic)				Opponent Yang, A (Alex)
3	2	Tournament 2025 Tshwane South School District CLOSED League Championship				Tournament 2025 Tshwane South School District CLOSED League Championship
		date 2025-08-16	rnd 1	type Standard	result 1	date 2025-08-16	rnd 3	type Standard	result 1
		Opponent Nation, D (Darren)				Opponent Pieters, K (Kayla)

#	Games	Start				End
1	4	Tournament Grey College Team Championship 2024				Tournament D4 Tshwane South District Schools Teams Chess Tournament 2024
		date 2024-02-24	rnd 5	type Standard	result 1	date 2024-08-03	rnd 3	type Standard	result 1
		Opponent Mohobane, L (Lebajoa)				Opponent Child, H (Henry)
2	3	Tournament Ekurhuleni Chess Open 2022				Tournament 2022 Gauteng Interregion
		date 2022-01-08	rnd 4	type Standard	result 1	date 2022-02-26	rnd 1	type Standard	result 1
		Opponent De Goveia, D (Dominic)				Opponent Yang, A (Alex)
3	2	Tournament 2025 Tshwane South School District CLOSED League Championship				Tournament 2025 Tshwane South School District CLOSED League Championship
		date 2025-08-16	rnd 1	type Standard	result 1	date 2025-08-16	rnd 3	type Standard	result 1
		Opponent Nation, D (Darren)				Opponent Pieters, K (Kayla)

No games found.

#	Games	Start				End

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	Van Heerden ,L (Llewellyn)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Van Heerden ,L (Llewellyn)	2	1220.4	795.4	2	1224	795.4	0	0	0	0	0	0
2	Pieterse ,EG (Erik Georg)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Pieterse ,EG (Erik Georg)	1	1152.1	727.1	1	1139.1	727.1	0	0	0	0	0	0
3	Nkosi ,S (Siphesihle)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Nkosi ,S (Siphesihle)	1	1418.5	993.5	1	1351.2	993.5	0	0	0	0	0	0
4	Maritz ,S (Sune)	1	1	425	1	1	425	0	0	0	0	0	0
4	Maritz ,S (Sune)	1	1178.2	1603.2	1	1148.4	1603.2	0	0	0	0	0	0
5	Storey ,L (Liam)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Storey ,L (Liam)	1	1314	889	1	1286	889	0	0	0	0	0	0
6	Phalandwa ,O (Oritshidza)	1	1	425	1	1	425	0	0	0	0	0	0
6	Phalandwa ,O (Oritshidza)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Ebrahim ,Z (Zachary)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Ebrahim ,Z (Zachary)	1	1285.5	860.5	1	1265.9	860.5	0	0	0	0	0	0
8	Nyokong ,N (Nyakallo)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Nyokong ,N (Nyakallo)	1	1271.3	846.3	1	1229.2	846.3	0	0	0	0	0	0
9	Yang ,A (Alex)	1	1	425	1	1	425	0	0	0	0	0	0
9	Yang ,A (Alex)	1	1422.3	1847.3	1	1412	1847.3	0	0	0	0	0	0
10	Klaas ,O (Oyintanda)	1	1	425	1	1	425	0	0	0	0	0	0
10	Klaas ,O (Oyintanda)	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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PLAYER PAGE

Personal

Groenewald, R (Ruan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms