Chess South Africa Ratings Database

PLAYER PAGE

Personal

Robberts, S (Stefan Johan)

Chess SA id

104044537

FIDE id

Date of birth

2004-09-20 (Adult)

Gender

Male

Region

Mangaung (FMB)

Citizen

RSA

Titles

Chess SA registered

Last active game

2019-06-01

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1111.6	1100.7	705.4	668.4
Raw rating	1111.6	1100.7	705.4	668.4
Weighted rating	1111.6	1100.7	705	668.4
Weighted performance	215.6	214.5	0	0
Floor	646.3	641.9	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	188.1	191	335.5	353.6
Highest rating	1200 2024-11-01	1200 2024-11-01	1200 2024-03-01	1200 2024-03-01
Highest raw rating	1146.3 2019-05-01	1141.9 2019-05-01	705.4 2024-03-01	668.4 2024-03-01
Highest weighted rating	1146.3 2024-11-01	1141.9 2024-11-01	705.4 2024-11-01	668.4 2024-11-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1111.6	1100.7	705.4	668.4
Analysis
Rating	1111.6	1100.7	705.4	668.4
Raw rating	1111.6	1100.7	705.4	668.4
Weighted rating	1111.6	1100.7	705
Weighted performance	215.6	214.5	0
K-factor	40	40	40	40
Floor	646.3	641.9	500	500
Max/Min rating change allowed	188.1	191	335.5	353.6
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	1111.6	1100.7	705.4	668.4
New weighted rating	1111.6	1100.7	705.3	668.4
New weighted performance	215.3	214.1	0	0
Temp new rating	1111.6	1100.7	705.4	668.4
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1111.6	1100.7	705.4	668.4
New K-factor	40	40	40	40
New floor	646.3	641.9	500	500

Item	Main	Standard
	0	0
	0	0
	0	0
	0	0
	0	0
	0	0
History	248	248

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Mangaung (FMB)
Province	Free State (FS)
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	67	22.5	33.58	-139.6	1079.8	940.2
Standard	67	22.5	33.58	-139.6	1079.8	940.2
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1111.6	1100.7	705.4	668.4
2025-09-01	1111.6	1100.7	705.4	668.4
2025-08-01	1111.6	1100.7	705.4	668.4
2025-07-01	1111.6	1100.7	705.4	668.4
2025-06-01	1111.6	1100.7	705.4	668.4
2025-05-01	1111.6	1100.7	705.4	668.4
2025-04-01	1111.6	1100.7	705.4	668.4
2025-03-01	1111.6	1100.7	705.4	668.4
2025-02-01	1111.6	1100.7	705.4	668.4
2025-01-01	1111.6	1100.7	705.4	668.4
2024-12-01	1111.6	1100.7	705.4	668.4
2024-11-01	1111.6	1100.7	705.4	668.4
2024-10-01	1111.6	1100.7	705.4	668.4
2024-09-01	1111.6	1100.7	705.4	668.4
2024-08-01	1111.6	1100.7	705.4	668.4
2024-07-01	1111.6	1100.7	705.4	668.4
2024-06-01	1111.6	1100.7	705.4	668.4
2024-08-01	1111.6	1100.7	705.4	668.4
2024-04-01	1111.6	1100.7	705.4	668.4
2024-03-01	1111.6	1100.7	705.4	668.4
2024-02-01	1111.6	1100.7	705.4	668.4
2024-01-01	1111.6	1100.7	705.4	668.4
2023-12-01	1111.6	1100.7	668.4	668.4
2023-11-01	1111.6	1100.7	668.4	668.4

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	Mangaung Metro Chess 31 May to 1 June 2019 (C)	2019-05-31	2019-06-01	Standard	Mangaung (FMB)	5	5	2.5	Yes	Analysis
2	Inter Regional Chess Championship 2019 (U16)	2019-05-10	2019-05-11	Standard	Mangaung (FMB)	5	4	1	Yes	Analysis
3	Mangaung Metro Chess 12 to 13 April 2019 (C)	2019-04-12	2019-04-13	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
4	Morris Club Challenge 2019	2019-02-16	2019-02-16	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
5	Mangaung Metro Chess 1-2 February 2019 (C)	2019-02-01	2019-02-02	Standard	Mangaung (FMB)	5	5	2	Yes	Analysis
6	Mangaung Metro Chess 18-19 January 2019 (C)	2019-01-18	2019-01-19	Standard	Mangaung (FMB)	5	5	2	Yes	Analysis
7	South African Junior Team Championships 2018 (U16B)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	0	Yes	Analysis
8	Free State Open 2018 (C)	2018-08-17	2018-08-18	Standard	Mangaung (FMB)	6	6	4	Yes	Analysis
9	Inter Regional 2018 (U16 Team)	2018-05-04	2018-05-05	Standard	Frances Baard (NCF)	5	5	1	Yes	Analysis
10	Mangaung Metro Chess 20-21 April 2018 (C)	2018-04-20	2018-04-21	Standard	Mangaung (FMB)	5	5	2	Yes	Analysis
11	Mangaung Metro Chess 2 & 3 February 2018 (C)	2018-02-02	2018-02-03	Standard	Mangaung (FMB)	5	4	1	Yes	Analysis
12	Mangaung Metro Chess 19 & 20 January 2018 (C)	2018-01-19	2018-01-20	Standard	Mangaung (FMB)	5	4	1	Yes	Analysis
13	South African Junior Team Championships 2017 (U14C)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	7	0	Yes	Analysis

#	Games	Start				End
1	4	Tournament Morris Club Challenge 2019				Tournament Mangaung Metro Chess 12 to 13 April 2019
		date 2019-02-16	rnd 4	type Standard	result 1	date 2019-04-12	rnd 2	type Standard	result 1
		Opponent Melville, J (Jason)				Opponent Rossouw, J (Johrne)
2	3	Tournament Inter Regional Chess Championship 2019				Tournament Mangaung Metro Chess 31 May to 1 June 2019
		date 2019-05-11	rnd 5	type Standard	result 1	date 2019-05-31	rnd 2	type Standard	result 0.5
		Opponent Swart, D (Dian)				Opponent Liebenberg, A (Abraham)
3	3	Tournament Free State Open 2018				Tournament Free State Open 2018
		date 2018-08-18	rnd 3	type Standard	result 1	date 2018-08-18	rnd 5	type Standard	result 1
		Opponent Tholo, K (Kabelo)				Opponent Jansen Van Rensburg, K (Kara)

#	Games	Start				End
1	4	Tournament Morris Club Challenge 2019				Tournament Mangaung Metro Chess 12 to 13 April 2019
		date 2019-02-16	rnd 4	type Standard	result 1	date 2019-04-12	rnd 2	type Standard	result 1
		Opponent Melville, J (Jason)				Opponent Rossouw, J (Johrne)
2	3	Tournament Inter Regional Chess Championship 2019				Tournament Mangaung Metro Chess 31 May to 1 June 2019
		date 2019-05-11	rnd 5	type Standard	result 1	date 2019-05-31	rnd 2	type Standard	result 0.5
		Opponent Swart, D (Dian)				Opponent Liebenberg, A (Abraham)
3	3	Tournament Free State Open 2018				Tournament Free State Open 2018
		date 2018-08-18	rnd 3	type Standard	result 1	date 2018-08-18	rnd 5	type Standard	result 1
		Opponent Tholo, K (Kabelo)				Opponent Jansen Van Rensburg, K (Kara)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Morris Club Challenge 2019				Tournament Mangaung Metro Chess 12 to 13 April 2019
		date 2019-02-16	rnd 4	type Standard	result 1	date 2019-04-12	rnd 2	type Standard	result 1
		Opponent Melville, J (Jason)				Opponent Rossouw, J (Johrne)
2	3	Tournament Free State Open 2018				Tournament Free State Open 2018
		date 2018-08-18	rnd 3	type Standard	result 1	date 2018-08-18	rnd 5	type Standard	result 1
		Opponent Tholo, K (Kabelo)				Opponent Jansen Van Rensburg, K (Kara)
3	2	Tournament Inter Regional Chess Championship 2019				Tournament Mangaung Metro Chess 31 May to 1 June 2019
		date 2019-05-11	rnd 5	type Standard	result 1	date 2019-05-31	rnd 1	type Standard	result 1
		Opponent Swart, D (Dian)				Opponent Rossouw, J (Johrne)

#	Games	Start				End
1	4	Tournament Morris Club Challenge 2019				Tournament Mangaung Metro Chess 12 to 13 April 2019
		date 2019-02-16	rnd 4	type Standard	result 1	date 2019-04-12	rnd 2	type Standard	result 1
		Opponent Melville, J (Jason)				Opponent Rossouw, J (Johrne)
2	3	Tournament Free State Open 2018				Tournament Free State Open 2018
		date 2018-08-18	rnd 3	type Standard	result 1	date 2018-08-18	rnd 5	type Standard	result 1
		Opponent Tholo, K (Kabelo)				Opponent Jansen Van Rensburg, K (Kara)
3	2	Tournament Inter Regional Chess Championship 2019				Tournament Mangaung Metro Chess 31 May to 1 June 2019
		date 2019-05-11	rnd 5	type Standard	result 1	date 2019-05-31	rnd 1	type Standard	result 1
		Opponent Swart, D (Dian)				Opponent Rossouw, J (Johrne)

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	Smit ,A (Albert)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
1	Smit ,A (Albert)	3	1062.3	1204	3	1070	1204	0	0	0	0	0	0
2	Fouchee ,M (Marinus)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
2	Fouchee ,M (Marinus)	3	1190.1	1048.5	3	1195.3	1048.5	0	0	0	0	0	0
3	Rossouw ,J (Johrne)	2	2	425	2	2	425	0	0	0	0	0	0
3	Rossouw ,J (Johrne)	2	1311.6	1736.6	2	1304.1	1736.6	0	0	0	0	0	0
4	Redguard ,J (Junaid)	2	1	0	2	1	0	0	0	0	0	0	0
4	Redguard ,J (Junaid)	2	1178.2	1178.2	2	1174.2	1178.2	0	0	0	0	0	0
5	Segale ,N (Neo)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Segale ,N (Neo)	2	1198.2	773.2	2	1197.4	773.2	0	0	0	0	0	0
6	Boje ,C (Carissa)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Boje ,C (Carissa)	2	1132.2	707.2	2	1129.1	707.2	0	0	0	0	0	0
7	Melville ,J (Jason)	1	1	425	1	1	425	0	0	0	0	0	0
7	Melville ,J (Jason)	1	993	1418	1	989.3	1418	0	0	0	0	0	0
8	Jansen Van Rensburg ,K (Kara)	1	1	425	1	1	425	0	0	0	0	0	0
8	Jansen Van Rensburg ,K (Kara)	1	1094.1	1519.1	1	1080.2	1519.1	0	0	0	0	0	0
9	Tholo ,K (Kabelo)	1	1	425	1	1	425	0	0	0	0	0	0
9	Tholo ,K (Kabelo)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Ristic ,A (Andrej)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Ristic ,A (Andrej)	1	1137.9	712.9	1	1137.9	712.9	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

Robberts, S (Stefan Johan)

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