Chess South Africa Ratings Database

PLAYER PAGE

Personal

Posthumus, R (Ruan)

Chess SA id

1060101113

FIDE id

Date of birth

2006-02-14 (U20)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2020-02-01

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1134	1186	1080	1200
Raw rating	1134	1186	1080	1200
Weighted rating	1134	1186	1080	1200
Weighted performance	0	0	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	182.2	169.2	196.7	165.8
Highest rating	1200 2018-02-01	1200 2018-10-01	1200 2018-02-01	1200 2018-10-01
Highest raw rating	1200 2018-02-01	1200 2020-01-01	1200 2018-02-01	1200 2024-02-01
Highest weighted rating	1200 2018-02-01	1200 2018-10-01	1200 2018-02-01	1200 2018-10-01
Highest weighted performance	1200 2018-02-01	1200 2020-01-01	1200 2018-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1134	1186	1080	1200
Analysis
Rating	1134	1186	1080	1200
Raw rating	1134	1186	1080	1200
Weighted rating	1134	1186	1080
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	182.2	169.2	196.7	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	1134	1186	1080	1200
New weighted rating	1134	1186	1080	1200
New weighted performance	0	0	0	0
Temp new rating	1134	1186	1080	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1134	1186	1080	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	14	4	10

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U20
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 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	14	6	42.86	-60.7	1018.1	957.4
Standard	4	2	50	0	1124.3	1124.3
Rapid	10	4	40	-85	975.6	890.6
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1134	1186	1080	1200
2025-09-01	1134	1186	1080	1200
2025-08-01	1134	1186	1080	1200
2025-07-01	1134	1186	1080	1200
2025-06-01	1134	1186	1080	1200
2025-05-01	1134	1186	1080	1200
2025-04-01	1134	1186	1080	1200
2025-03-01	1134	1186	1080	1200
2025-02-01	1134	1186	1080	1200
2025-01-01	1134	1186	1080	1200
2024-12-01	1134	1186	1080	1200
2024-11-01	1134	1186	1080	1200
2024-10-01	1134	1186	1080	1200
2024-09-01	1134	1186	1080	1200
2024-08-01	1134	1186	1080	1200
2024-07-01	1134	1186	1080	1200
2024-06-01	1134	1186	1080	1200
2024-08-01	1134	1186	1080	1200
2024-04-01	1134	1186	1080	1200
2024-03-01	1134	1186	1080	1200
2024-02-01	1134	1186	1080	1200
2024-01-01	1134	1186	1080	1200
2023-12-01	1134	1186	1080	1200
2023-11-01	1134	1186	1080	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	Grey College Team Championship 2020 (B)	2020-01-31	2020-02-01	Standard	Mangaung (FMB)	5	4	2	Yes	Analysis
2	2019 Super 12 Laerskole (Seniors)	2019-05-04	2019-05-04	Rapid	Tshwane (GTP)	5	5	1	Yes	Analysis
3	2018 Super 12 (Senior)	2018-05-05	2018-05-05	Rapid	Tshwane (GTP)	5	5	3	Yes	Analysis

#	Games	Start				End
1	3	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 2	type Rapid	result 1	date 2018-05-05	rnd 4	type Rapid	result 1
		Opponent Wiggil, D (Dylan Thomas)				Opponent Ackerman, E (Ethan)
2	2	Tournament Grey College Team Championship 2020				Tournament Grey College Team Championship 2020
		date 2020-02-01	rnd 4	type Standard	result 1	date 2020-02-01	rnd 5	type Standard	result 1
		Opponent Mahlakaza, T (Thembane)				Opponent Barnabas, B (Brydyn)
3	1	Tournament 2019 Super 12 Laerskole				Tournament 2019 Super 12 Laerskole
		date 2019-05-04	rnd 5	type Rapid	result 1	date 2019-05-04	rnd 5	type Rapid	result 1
		Opponent Dyason, N (Nicola)				Opponent Dyason, N (Nicola)

#	Games	Start				End
1	2	Tournament Grey College Team Championship 2020				Tournament Grey College Team Championship 2020
		date 2020-02-01	rnd 4	type Standard	result 1	date 2020-02-01	rnd 5	type Standard	result 1
		Opponent Mahlakaza, T (Thembane)				Opponent Barnabas, B (Brydyn)

#	Games	Start				End
1	3	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 2	type Rapid	result 1	date 2018-05-05	rnd 4	type Rapid	result 1
		Opponent Wiggil, D (Dylan Thomas)				Opponent Ackerman, E (Ethan)
2	1	Tournament 2019 Super 12 Laerskole				Tournament 2019 Super 12 Laerskole
		date 2019-05-04	rnd 5	type Rapid	result 1	date 2019-05-04	rnd 5	type Rapid	result 1
		Opponent Dyason, N (Nicola)				Opponent Dyason, N (Nicola)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 2	type Rapid	result 1	date 2018-05-05	rnd 4	type Rapid	result 1
		Opponent Wiggil, D (Dylan Thomas)				Opponent Ackerman, E (Ethan)
2	2	Tournament Grey College Team Championship 2020				Tournament Grey College Team Championship 2020
		date 2020-02-01	rnd 4	type Standard	result 1	date 2020-02-01	rnd 5	type Standard	result 1
		Opponent Mahlakaza, T (Thembane)				Opponent Barnabas, B (Brydyn)
3	1	Tournament 2019 Super 12 Laerskole				Tournament 2019 Super 12 Laerskole
		date 2019-05-04	rnd 5	type Rapid	result 1	date 2019-05-04	rnd 5	type Rapid	result 1
		Opponent Dyason, N (Nicola)				Opponent Dyason, N (Nicola)

#	Games	Start				End
1	2	Tournament Grey College Team Championship 2020				Tournament Grey College Team Championship 2020
		date 2020-02-01	rnd 4	type Standard	result 1	date 2020-02-01	rnd 5	type Standard	result 1
		Opponent Mahlakaza, T (Thembane)				Opponent Barnabas, B (Brydyn)

#	Games	Start				End
1	3	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 2	type Rapid	result 1	date 2018-05-05	rnd 4	type Rapid	result 1
		Opponent Wiggil, D (Dylan Thomas)				Opponent Ackerman, E (Ethan)
2	1	Tournament 2019 Super 12 Laerskole				Tournament 2019 Super 12 Laerskole
		date 2019-05-04	rnd 5	type Rapid	result 1	date 2019-05-04	rnd 5	type Rapid	result 1
		Opponent Dyason, N (Nicola)				Opponent Dyason, N (Nicola)

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	Mahlakaza ,T (Thembane)	1	1	425	1	1	425	0	0	0	0	0	0
1	Mahlakaza ,T (Thembane)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
2	Du Preez ,A (Andre)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Du Preez ,A (Andre)	1	1013.3	588.3	1	1006	588.3	0	0	0	0	0	0
3	Jongbloed ,C (Chad)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Jongbloed ,C (Chad)	1	1083.7	658.7	1	1087.4	658.7	0	0	0	0	0	0
4	Barnabas ,B (Brydyn)	1	1	425	1	1	425	0	0	0	0	0	0
4	Barnabas ,B (Brydyn)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
5	Dyason ,N (Nicola)	1	1	425	0	0	0	1	1	425	0	0	0
5	Dyason ,N (Nicola)	1	1099.1	1524.1	0	0	0	1	1200	1524.1	0	0	0
6	De Jongh ,K (Kayla)	1	0	-425	0	0	0	1	0	-425	0	0	0
6	De Jongh ,K (Kayla)	1	520	95	0	0	0	1	520	95	0	0	0
7	Mostert ,AG (Adriaan Gert)	1	0	-425	0	0	0	1	0	-425	0	0	0
7	Mostert ,AG (Adriaan Gert)	1	1654.4	1229.4	0	0	0	1	1346.5	1229.4	0	0	0
8	Roodt ,J (Jaques)	1	0	-425	0	0	0	1	0	-425	0	0	0
8	Roodt ,J (Jaques)	1	500	75	0	0	0	1	500	75	0	0	0
9	Du Plessis ,E (Eugene)	1	0	-425	0	0	0	1	0	-425	0	0	0
9	Du Plessis ,E (Eugene)	1	1200	775	0	0	0	1	1200	775	0	0	0
10	Tennant ,J (Jason)	1	0	-425	0	0	0	1	0	-425	0	0	0
10	Tennant ,J (Jason)	1	896.9	471.9	0	0	0	1	845.8	471.9	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

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PLAYER PAGE

Personal

Posthumus, 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