Chess South Africa Ratings Database

PLAYER PAGE

Personal

Rowlston, S (Sofia)

Chess SA id

2090136909

FIDE id

Date of birth

2009-11-17 (U18)

Gender

Female

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2022-04-09

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1195.4	1187.4	1200	1200
Raw rating	1195.4	1187.4	1200	1200
Weighted rating	1195.4	1187.4	1200	1200
Weighted performance	0	0	0	0
Floor	733.3	736.4	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	166.9	168.8	165.8	165.8
Highest rating	1329.5 2022-02-01	1319.8 2022-02-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1233.3 2022-03-01	1236.4 2022-03-01	1200 2024-03-01	1200 2024-03-01
Highest weighted rating	1233.3 2022-04-01	1236.4 2022-04-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1329.5 2022-02-01	1319.8 2022-02-01	1200 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1195.4	1187.4	1200	1200
Analysis
Rating	1195.4	1187.4	1200	1200
Raw rating	1195.4	1187.4	1200	1200
Weighted rating	1195.4	1187.4	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	733.3	736.4	700	700
Max/Min rating change allowed	166.9	168.8	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	1195.4	1187.4	1200	1200
New weighted rating	1195.4	1187.4	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1195.4	1187.4	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1195.4	1187.4	1200	1200
New K-factor	36	36	36	36
New floor	733.3	736.4	700	700

Item	Main	Standard
	0	0
	0	0
	0	0
	0	0
	21	21
	0	0
History	21	21

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Female
Age group	U18
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-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	21	11	52.38	20.2	1189.7	1209.9
Standard	21	11	52.38	20.2	1189.7	1209.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1195.4	1187.4	1200	1200
2025-09-01	1195.4	1187.4	1200	1200
2025-08-01	1195.4	1187.4	1200	1200
2025-07-01	1195.4	1187.4	1200	1200
2025-06-01	1195.4	1187.4	1200	1200
2025-05-01	1195.4	1187.4	1200	1200
2025-04-01	1195.4	1187.4	1200	1200
2025-03-01	1195.4	1187.4	1200	1200
2025-02-01	1195.4	1187.4	1200	1200
2025-01-01	1195.4	1187.4	1200	1200
2024-12-01	1195.4	1187.4	1200	1200
2024-11-01	1195.4	1187.4	1200	1200
2024-10-01	1195.4	1187.4	1200	1200
2024-09-01	1195.4	1187.4	1200	1200
2024-08-01	1195.4	1187.4	1200	1200
2024-07-01	1195.4	1187.4	1200	1200
2024-06-01	1195.4	1187.4	1200	1200
2024-08-01	1195.4	1187.4	1200	1200
2024-04-01	1195.4	1187.4	1200	1200
2024-03-01	1195.4	1187.4	1200	1200
2024-02-01	1195.4	1187.4	1200	1200
2024-01-01	1195.4	1187.4	1200	1200
2023-12-01	1195.4	1187.4	1200	1200
2023-11-01	1195.4	1187.4	1200	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	Lux Deo NG Kerk Chess Open 2022 (C)	2022-04-09	2022-04-09	Standard	Sedibeng (GSV)	5	4	1	Yes	Analysis
2	Carel`s Chess Open 2022 (D)	2022-03-05	2022-03-05	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
3	JNW Trinityhouse LF 2022 (Contenders)	2022-03-12	2022-03-12	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
4	Chess Power House RR 1 2022	2022-02-12	2022-02-12	Standard	Ekurhuleni (GE)	7	7	5	Yes	Analysis

#	Games	Start				End
1	4	Tournament Chess Power House RR 1 2022				Tournament Chess Power House RR 1 2022
		date 2022-02-12	rnd 3	type Standard	result 1	date 2022-02-12	rnd 6	type Standard	result 1
		Opponent Emechebe, M (Munachim)				Opponent Shalala, W (William Michael)
2	2	Tournament Carel`s Chess Open 2022				Tournament JNW Trinityhouse LF 2022
		date 2022-03-05	rnd 5	type Standard	result 1	date 2022-03-12	rnd 1	type Standard	result 1
		Opponent Coetzer, J (Jessica)				Opponent Kelly, N (Nicholas)
3	1	Tournament Lux Deo NG Kerk Chess Open 2022				Tournament Lux Deo NG Kerk Chess Open 2022
		date 2022-04-09	rnd 4	type Standard	result 1	date 2022-04-09	rnd 4	type Standard	result 1
		Opponent Tolmay, L (Llewellyn)				Opponent Tolmay, L (Llewellyn)

#	Games	Start				End
1	4	Tournament Chess Power House RR 1 2022				Tournament Chess Power House RR 1 2022
		date 2022-02-12	rnd 3	type Standard	result 1	date 2022-02-12	rnd 6	type Standard	result 1
		Opponent Emechebe, M (Munachim)				Opponent Shalala, W (William Michael)
2	2	Tournament Carel`s Chess Open 2022				Tournament JNW Trinityhouse LF 2022
		date 2022-03-05	rnd 5	type Standard	result 1	date 2022-03-12	rnd 1	type Standard	result 1
		Opponent Coetzer, J (Jessica)				Opponent Kelly, N (Nicholas)
3	1	Tournament Lux Deo NG Kerk Chess Open 2022				Tournament Lux Deo NG Kerk Chess Open 2022
		date 2022-04-09	rnd 4	type Standard	result 1	date 2022-04-09	rnd 4	type Standard	result 1
		Opponent Tolmay, L (Llewellyn)				Opponent Tolmay, L (Llewellyn)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Chess Power House RR 1 2022				Tournament Chess Power House RR 1 2022
		date 2022-02-12	rnd 3	type Standard	result 1	date 2022-02-12	rnd 6	type Standard	result 1
		Opponent Emechebe, M (Munachim)				Opponent Shalala, W (William Michael)
2	2	Tournament Carel`s Chess Open 2022				Tournament JNW Trinityhouse LF 2022
		date 2022-03-05	rnd 5	type Standard	result 1	date 2022-03-12	rnd 1	type Standard	result 1
		Opponent Coetzer, J (Jessica)				Opponent Kelly, N (Nicholas)
3	1	Tournament Lux Deo NG Kerk Chess Open 2022				Tournament Lux Deo NG Kerk Chess Open 2022
		date 2022-04-09	rnd 4	type Standard	result 1	date 2022-04-09	rnd 4	type Standard	result 1
		Opponent Tolmay, L (Llewellyn)				Opponent Tolmay, L (Llewellyn)

#	Games	Start				End
1	4	Tournament Chess Power House RR 1 2022				Tournament Chess Power House RR 1 2022
		date 2022-02-12	rnd 3	type Standard	result 1	date 2022-02-12	rnd 6	type Standard	result 1
		Opponent Emechebe, M (Munachim)				Opponent Shalala, W (William Michael)
2	2	Tournament Carel`s Chess Open 2022				Tournament JNW Trinityhouse LF 2022
		date 2022-03-05	rnd 5	type Standard	result 1	date 2022-03-12	rnd 1	type Standard	result 1
		Opponent Coetzer, J (Jessica)				Opponent Kelly, N (Nicholas)
3	1	Tournament Lux Deo NG Kerk Chess Open 2022				Tournament Lux Deo NG Kerk Chess Open 2022
		date 2022-04-09	rnd 4	type Standard	result 1	date 2022-04-09	rnd 4	type Standard	result 1
		Opponent Tolmay, L (Llewellyn)				Opponent Tolmay, L (Llewellyn)

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	Marcon ,A (Alessio Ricardo)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Marcon ,A (Alessio Ricardo)	1	1200	775	1	1200	775	0	0	0	0	0	0
2	Farrell ,J (Jonty)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Farrell ,J (Jonty)	1	1155.2	730.2	1	1145.2	730.2	0	0	0	0	0	0
3	Coetzer ,J (Jessica)	1	1	425	1	1	425	0	0	0	0	0	0
3	Coetzer ,J (Jessica)	1	1217.6	1642.6	1	1218	1642.6	0	0	0	0	0	0
4	Kelly ,N (Nicholas)	1	1	425	1	1	425	0	0	0	0	0	0
4	Kelly ,N (Nicholas)	1	1135.9	1560.9	1	1122.8	1560.9	0	0	0	0	0	0
5	Ambachtsheer ,A (Aron)	1	1	425	1	1	425	0	0	0	0	0	0
5	Ambachtsheer ,A (Aron)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
6	Botha ,OJ (Owen Johan)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Botha ,OJ (Owen Johan)	1	1333.8	908.8	1	1328.2	908.8	0	0	0	0	0	0
7	Leibrandt ,M (Matthew)	1	1	425	1	1	425	0	0	0	0	0	0
7	Leibrandt ,M (Matthew)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Kotzee ,A (Armand)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Kotzee ,A (Armand)	1	1312.7	887.7	1	1311	887.7	0	0	0	0	0	0
9	Tolmay ,L (Llewellyn)	1	1	425	1	1	425	0	0	0	0	0	0
9	Tolmay ,L (Llewellyn)	1	1239.8	1664.8	1	1226.5	1664.8	0	0	0	0	0	0
10	Roodt ,K (Kyle)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Roodt ,K (Kyle)	1	1200	775	1	1200	775	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

Rowlston, S (Sofia)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms