Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jonker, R (Ruan)

Chess SA id

1950147773

FIDE id

Date of birth

1995-04-06 (Adult)

Gender

Male

Region

Chess South Africa (CSA)

Citizen

RSA

Titles

Chess SA registered

Last active game

2022-12-01

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1271.9	1300	1162	1300
Raw rating	1271.9	1300	1162	1300
Weighted rating	1271.6	1299.7	1162	1299.7
Weighted performance	0	0	0	0
Floor	771.9	800	700	800
K-factor	36	36	36	36
Min/Max rating change allowed	149.7	143.8	175	143.8
Highest rating	1271.9 2024-02-01	1300 2024-02-01	1200 2018-10-01	1300 2024-02-01
Highest raw rating	1271.9 2024-02-01	1300 2024-02-01	1200 2020-01-01	1300 2024-02-01
Highest weighted rating	1269.1 2025-08-01	1296.7 2025-08-01	1200 2018-10-01	1296.7 2025-08-01
Highest weighted performance	1200 2020-01-01	1200 2024-02-01	1200 2020-01-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1271.9	1300	1162	1300
Analysis
Rating	1271.9	1300	1162	1300
Raw rating	1271.9	1300	1162	1300
Weighted rating	1271.6	1299.7	1162
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	771.9	800	700	800
Max/Min rating change allowed	149.7	143.8	175	143.8
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	1271.9	1300	1162	1300
New weighted rating	1271.9	1300	1162	1300
New weighted performance	0	0	0	0
Temp new rating	1271.9	1300	1162	1300
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1271.9	1300	1162	1300
New K-factor	36	36	36	36
New floor	771.9	800	700	800

Item	Main	Rapid
	0	0
	0	0
	0	0
	0	0
	7	7
	0	0
History	7	7

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Chess South Africa (CSA)
Province
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult 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	7	2.5	35.71	-121.4	1193	1071.5
Standard	0	0	0	0	0	0
Rapid	7	2.5	35.71	-121.4	1193	1071.5
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1271.9	1300	1162	1300
2025-09-30	1271.9	1300	1162	1300
2025-09-01	1271.9	1300	1162	1300
2025-08-01	1271.9	1300	1162	1300
2025-07-01	1271.9	1300	1162	1300
2025-06-01	1271.9	1300	1162	1300
2025-05-01	1271.9	1300	1162	1300
2025-04-01	1271.9	1300	1162	1300
2025-03-01	1271.9	1300	1162	1300
2025-02-01	1271.9	1300	1162	1300
2025-01-01	1271.9	1300	1162	1300
2024-12-01	1271.9	1300	1162	1300
2024-11-01	1271.9	1300	1162	1300
2024-10-01	1271.9	1300	1162	1300
2024-09-01	1271.9	1300	1162	1300
2024-08-01	1271.9	1300	1162	1300
2024-07-01	1271.9	1300	1162	1300
2024-09-01	1271.9	1300	1162	1300
2024-05-01	1271.9	1300	1162	1300
2024-04-01	1271.9	1300	1162	1300
2024-03-01	1271.9	1300	1162	1300
2024-02-01	1271.9	1300	1162	1300
2024-01-01	1271.9	1300	1162	1300
2023-12-01	1186.7	1200	1162	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	Jeffreys Bay Cc Present Justin`s Birthday Rapid 2022 (A)	2022-12-01	2022-12-01	Rapid	Sarah Baartman (ESB)	6	1	0	Yes	Analysis
2	Jeffreys Bay Chess Club Rapid 17 November 2022	2022-11-17	2022-11-17	Rapid	Sarah Baartman (ESB)	6	6	2.5	Yes	Analysis

#	Games	Start				End
1	2	Tournament Jeffreys Bay Chess Club Rapid 17 November 2022				Tournament Jeffreys Bay Chess Club Rapid 17 November 2022
		date 2022-11-17	rnd 3	type Rapid	result 1	date 2022-11-17	rnd 4	type Rapid	result 0.5
		Opponent De Lange, E (Edeline)				Opponent Isaacs, C (Charlton)
2	1	Tournament Jeffreys Bay Chess Club Rapid 17 November 2022				Tournament Jeffreys Bay Chess Club Rapid 17 November 2022
		date 2022-11-17	rnd 6	type Rapid	result 1	date 2022-11-17	rnd 6	type Rapid	result 1
		Opponent Pienaar, X (Xeno)				Opponent Pienaar, X (Xeno)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Jeffreys Bay Chess Club Rapid 17 November 2022				Tournament Jeffreys Bay Chess Club Rapid 17 November 2022
		date 2022-11-17	rnd 3	type Rapid	result 1	date 2022-11-17	rnd 4	type Rapid	result 0.5
		Opponent De Lange, E (Edeline)				Opponent Isaacs, C (Charlton)
2	1	Tournament Jeffreys Bay Chess Club Rapid 17 November 2022				Tournament Jeffreys Bay Chess Club Rapid 17 November 2022
		date 2022-11-17	rnd 6	type Rapid	result 1	date 2022-11-17	rnd 6	type Rapid	result 1
		Opponent Pienaar, X (Xeno)				Opponent Pienaar, X (Xeno)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Jeffreys Bay Chess Club Rapid 17 November 2022				Tournament Jeffreys Bay Chess Club Rapid 17 November 2022
		date 2022-11-17	rnd 6	type Rapid	result 1	date 2022-11-17	rnd 6	type Rapid	result 1
		Opponent Pienaar, X (Xeno)				Opponent Pienaar, X (Xeno)
2	1	Tournament Jeffreys Bay Chess Club Rapid 17 November 2022				Tournament Jeffreys Bay Chess Club Rapid 17 November 2022
		date 2022-11-17	rnd 3	type Rapid	result 1	date 2022-11-17	rnd 3	type Rapid	result 1
		Opponent De Lange, E (Edeline)				Opponent De Lange, E (Edeline)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Jeffreys Bay Chess Club Rapid 17 November 2022				Tournament Jeffreys Bay Chess Club Rapid 17 November 2022
		date 2022-11-17	rnd 6	type Rapid	result 1	date 2022-11-17	rnd 6	type Rapid	result 1
		Opponent Pienaar, X (Xeno)				Opponent Pienaar, X (Xeno)
2	1	Tournament Jeffreys Bay Chess Club Rapid 17 November 2022				Tournament Jeffreys Bay Chess Club Rapid 17 November 2022
		date 2022-11-17	rnd 3	type Rapid	result 1	date 2022-11-17	rnd 3	type Rapid	result 1
		Opponent De Lange, E (Edeline)				Opponent De Lange, E (Edeline)

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	Dodd ,M (Melody)	1	0	-425	0	0	0	1	0	-425	0	0	0
1	Dodd ,M (Melody)	1	1048.7	623.7	0	0	0	1	996.2	623.7	0	0	0
2	Isaacs ,C (Charlton)	1	0.5	0	0	0	0	1	0.5	0	0	0	0
2	Isaacs ,C (Charlton)	1	996.5	996.5	0	0	0	1	1087.6	996.5	0	0	0
3	January ,P (Pharrel)	1	0	-425	0	0	0	1	0	-425	0	0	0
3	January ,P (Pharrel)	1	1266.6	841.6	0	0	0	1	1350.9	841.6	0	0	0
4	Munemo ,T (Tanaka)	1	0	-425	0	0	0	1	0	-425	0	0	0
4	Munemo ,T (Tanaka)	1	1298.8	873.8	0	0	0	1	1148	873.8	0	0	0
5	Pienaar ,X (Xeno)	1	1	425	0	0	0	1	1	425	0	0	0
5	Pienaar ,X (Xeno)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
6	De Lange ,E (Erin)	1	0	-425	0	0	0	1	0	-425	0	0	0
6	De Lange ,E (Erin)	1	1232.7	807.7	0	0	0	1	1308.1	807.7	0	0	0
7	De Lange ,E (Edeline)	1	1	425	0	0	0	1	1	425	0	0	0
7	De Lange ,E (Edeline)	1	1307.5	1732.5	0	0	0	1	1290.8	1732.5	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Jonker, 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