Chess South Africa Ratings Database

PLAYER PAGE

Personal

Williamson, S (Sarah)

Chess SA id

2090108393

FIDE id

Date of birth

2009-03-30 (U18)

Gender

Female

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-07

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1250.8	1243.3	1217.4	1200
Raw rating	1250.8	1243.3	1217.4	1200
Weighted rating	1213.7	1200	1217.4	1200
Weighted performance	1004	996.5	0	0
Floor	750.8	743.3	717.4	700
K-factor	36	36	36	36
Min/Max rating change allowed	154.2	155.9	161.8	165.8
Highest rating	1260.9 2023-09-01	1243.3 2025-09-30	1220 2022-03-01	1200 2018-10-01
Highest raw rating	1250.8 2025-09-30	1243.3 2025-09-30	1217.4 2024-03-01	1200 2024-03-01
Highest weighted rating	1213.7 2025-09-30	1225.2 2018-10-01	1217.4 2025-02-01	1200 2018-10-01
Highest weighted performance	1260.9 2023-09-01	1238.5 2023-09-01	1220 2022-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1250.8	1243.3	1217.4	1200
Analysis
Rating	1250.8	1243.3	1217.4	1200
Raw rating	1250.8	1243.3	1217.4	1200
Weighted rating	1213.7	1200	1217.4
Weighted performance	1004	996.5	0
K-factor	36	36	36	36
Floor	750.8	743.3	717.4	700
Max/Min rating change allowed	154.2	155.9	161.8	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	1250.8	1243.3	1217.4	1200
New weighted rating	1216.7	1203.6	1217.4	1200
New weighted performance	1003.5	996.1	0	0
Temp new rating	1250.8	1243.3	1217.4	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1250.8	1243.3	1217.4	1200
New K-factor	36	36	36	36
New floor	750.8	743.3	717.4	700

Item	Main	Standard	Rapid
	0	0	0
	4	4	0
	23	23	0
	22	22	0
	33	18	15
	0	0	0
History	106	91	15

Games since
	Main 27	Standard 27		Rapid 0		Blitz 0
Gender	Female
Age group	U18
Region	Cape Town (WCT)
Province	Western Cape (WC)
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	4	3	75	212.5	1253.3	1465.8
Standard	4	3	75	212.5	1253.3	1465.8
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	106	45	42.45	-64.2	1202.2	1138.1
Standard	91	37	40.66	-79.4	1201.4	1122
Rapid	15	8	53.33	28.3	1207.4	1235.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1250.8	1243.3	1217.4	1200
2025-09-01	1215.5	1203	1217.4	1200
2025-08-01	1215.5	1203	1217.4	1200
2025-07-01	1215.5	1203	1217.4	1200
2025-06-01	1215.5	1203	1217.4	1200
2025-05-01	1215.5	1203	1217.4	1200
2025-04-01	1215.5	1203	1217.4	1200
2025-03-01	1215.5	1203	1217.4	1200
2025-02-01	1215.5	1203	1217.4	1200
2025-01-01	1215.5	1203	1217.4	1200
2024-12-01	1215.5	1203	1217.4	1200
2024-11-01	1215.5	1203	1217.4	1200
2024-10-01	1215.5	1203	1217.4	1200
2024-09-01	1182.3	1162	1217.4	1200
2024-08-01	1182.3	1162	1217.4	1200
2024-07-01	1182.3	1162	1217.4	1200
2024-06-01	1182.3	1162	1217.4	1200
2024-08-01	1182.3	1162	1217.4	1200
2024-04-01	1182.3	1162	1217.4	1200
2024-03-01	1222.8	1205	1217.4	1200
2024-02-01	1243.7	1225.2	1217.4	1200
2024-01-01	1243.7	1225.2	1217.4	1200
2023-12-01	1243.7	1225.2	1217.4	1200
2023-11-01	1243.7	1225.2	1217.4	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	Western Cape Schools - Top Schools 2025 (U19 Girls)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	4	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Western Cape Schools - Top Schools 2025 (U19 Girls)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	4	3	Yes	Analysis
2	Western Cape Top Schools Championship 2024 (U15 Girls)	2024-08-30	2024-09-01	Standard	Eden (WEG)	6	6	4	Yes	Analysis
3	Western Cape HS Individuals Championship 2024 (U15 Girls)	2024-03-21	2024-03-22	Standard	Overberg (WOS)	6	6	1	Yes	Analysis
4	Cape Town Metro Schools Chess Closed Individuals 2024 (U15 Girls)	2024-03-02	2024-03-03	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
5	CT Metro Central District Schools Chess Individuals Trials 2024 (U15 Girls)	2024-02-03	2024-02-03	Standard	Cape Town (WCT)	5	5	2.5	Yes	Analysis
6	Western Cape Top Schools 2023 (U15 Girls)	2023-09-02	2023-09-03	Standard	Cape Winelands (WCW)	5	5	4.5	Yes	Analysis
7	Western Cape HS Individuals 2023 (U15 Girls)	2023-04-01	2023-04-02	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis
8	Cape Town Metro Schools Chess Closed Individuals 2023 (U15 Girls)	2023-02-03	2023-03-04	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
9	Central District School Trials 2023 (U15 Girls)	2023-02-03	2023-02-04	Standard	Cape Town (WCT)	6	5	2.5	Yes	Analysis
10	Metro Rapid 2022 (U13 Girls)	2022-10-22	2022-10-22	Rapid	Cape Town (WCT)	5	5	3	Yes	Analysis
11	WP Closed 2022 (U14)	2022-06-16	2022-06-16	Standard	Cape Town (WCT)	6	6	2.5	Yes	Analysis
12	Western Cape Schools 2022 (U13 Girls)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	6	1	Yes	Analysis
13	Metro WP Schools Chess Trials 2022 (U13 Girls)	2022-04-22	2022-04-23	Standard	Cape Town (WCT)	6	6	2.5	Yes	Analysis
14	2022 Central District Individual Trials (U13)	2022-03-05	2022-03-05	Rapid	Cape Town (WCT)	5	5	3	Yes	Analysis
15	Laerskool Welgemoed 12th Annual Chess Challenge 2022 (U14)	2022-02-19	2022-02-19	Rapid	Cape Town (WCT)	5	5	2	Yes	Analysis
16	2020 Central District (U11)	2020-02-07	2020-02-08	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
17	2020 Cape Of Good Hope Open (Open)	2020-02-21	2020-02-23	Standard	Cape Town (WCT)	6	6	1	Yes	Analysis
18	Western Cape Top Schools 2019 (U13 Girls)	2019-08-31	2019-09-01	Standard	Cape Winelands (WCW)	5	2	1	Yes	Analysis
19	Metro School Chess Closed Individual Trials 2019 (U11 Girls)	2019-03-01	2019-03-02	Standard	Cape Town (WCT)	6	5	0	Yes	Analysis
20	2019 Central District Schools Trials (U11)	2019-02-01	2019-02-02	Standard	Cape Town (WCT)	6	5	0.5	Yes	Analysis

#	Games	Start				End
1	6	Tournament Western Cape HS Individuals 2023				Tournament Western Cape Top Schools 2023
		date 2023-04-02	rnd 6	type Standard	result 1	date 2023-09-03	rnd 5	type Standard	result 1
		Opponent Joubert, C (Carla Louise)				Opponent Jeppe, G (Gracie-Rose)
2	5	Tournament Western Cape Top Schools Championship 2024				Tournament Western Cape Schools - Top Schools 2025
		date 2024-09-01	rnd 5	type Standard	result 1	date 2025-09-06	rnd 4	type Standard	result 1
		Opponent Paliso, S (Simbulokuhle)				Opponent Joseph, H (Helenah)
3	4	Tournament WP Closed 2022				Tournament Metro Rapid 2022
		date 2022-06-16	rnd 4	type Standard	result 1	date 2022-10-22	rnd 1	type Rapid	result 1
		Opponent De Wet, C (Christo)				Opponent Mokhele, Z (Zimi)

#	Games	Start				End
1	6	Tournament Western Cape HS Individuals 2023				Tournament Western Cape Top Schools 2023
		date 2023-04-02	rnd 6	type Standard	result 1	date 2023-09-03	rnd 5	type Standard	result 1
		Opponent Joubert, C (Carla Louise)				Opponent Jeppe, G (Gracie-Rose)
2	5	Tournament Western Cape Top Schools Championship 2024				Tournament Western Cape Schools - Top Schools 2025
		date 2024-09-01	rnd 5	type Standard	result 1	date 2025-09-06	rnd 4	type Standard	result 1
		Opponent Paliso, S (Simbulokuhle)				Opponent Joseph, H (Helenah)
3	3	Tournament Cape Town Metro Schools Chess Closed Individuals 2024				Tournament Cape Town Metro Schools Chess Closed Individuals 2024
		date 2024-03-03	rnd 4	type Standard	result 1	date 2024-03-03	rnd 6	type Standard	result 0.5
		Opponent Kondlo, H (Hlomla)				Opponent Healey, K (Katelyn)

#	Games	Start				End
1	3	Tournament 2022 Central District Individual Trials				Tournament 2022 Central District Individual Trials
		date 2022-03-05	rnd 1	type Rapid	result 1	date 2022-03-05	rnd 3	type Rapid	result 0.5
		Opponent Milandon, M (Mouanga Laurent)				Opponent Williams, M (Matthew)
2	2	Tournament Metro Rapid 2022				Tournament Metro Rapid 2022
		date 2022-10-22	rnd 3	type Rapid	result 1	date 2022-10-22	rnd 4	type Rapid	result 1
		Opponent Mputing, A (Asiphile)				Opponent Steenkamp, K (Kristen)
3	2	Tournament 2022 Central District Individual Trials				Tournament Metro Rapid 2022
		date 2022-03-05	rnd 5	type Rapid	result 1	date 2022-10-22	rnd 1	type Rapid	result 1
		Opponent Mohammed, Z (Zayaan)				Opponent Mokhele, Z (Zimi)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Western Cape Top Schools Championship 2024				Tournament Western Cape Schools - Top Schools 2025
		date 2024-09-01	rnd 5	type Standard	result 1	date 2025-09-06	rnd 4	type Standard	result 1
		Opponent Paliso, S (Simbulokuhle)				Opponent Joseph, H (Helenah)
2	4	Tournament Western Cape Top Schools 2023				Tournament Western Cape Top Schools 2023
		date 2023-09-02	rnd 2	type Standard	result 1	date 2023-09-03	rnd 5	type Standard	result 1
		Opponent Petersen, C (Chantelle)				Opponent Jeppe, G (Gracie-Rose)
3	2	Tournament Western Cape Top Schools Championship 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-08-30	rnd 1	type Standard	result 1	date 2024-08-30	rnd 2	type Standard	result 1
		Opponent Van Wyngaardt, C (Chlo�)				Opponent Pieterse, J (Jay-Leigh)

#	Games	Start				End
1	5	Tournament Western Cape Top Schools Championship 2024				Tournament Western Cape Schools - Top Schools 2025
		date 2024-09-01	rnd 5	type Standard	result 1	date 2025-09-06	rnd 4	type Standard	result 1
		Opponent Paliso, S (Simbulokuhle)				Opponent Joseph, H (Helenah)
2	4	Tournament Western Cape Top Schools 2023				Tournament Western Cape Top Schools 2023
		date 2023-09-02	rnd 2	type Standard	result 1	date 2023-09-03	rnd 5	type Standard	result 1
		Opponent Petersen, C (Chantelle)				Opponent Jeppe, G (Gracie-Rose)
3	2	Tournament Western Cape Top Schools Championship 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-08-30	rnd 1	type Standard	result 1	date 2024-08-30	rnd 2	type Standard	result 1
		Opponent Van Wyngaardt, C (Chlo�)				Opponent Pieterse, J (Jay-Leigh)

#	Games	Start				End
1	2	Tournament Metro Rapid 2022				Tournament Metro Rapid 2022
		date 2022-10-22	rnd 3	type Rapid	result 1	date 2022-10-22	rnd 4	type Rapid	result 1
		Opponent Mputing, A (Asiphile)				Opponent Steenkamp, K (Kristen)
2	2	Tournament 2022 Central District Individual Trials				Tournament Metro Rapid 2022
		date 2022-03-05	rnd 5	type Rapid	result 1	date 2022-10-22	rnd 1	type Rapid	result 1
		Opponent Mohammed, Z (Zayaan)				Opponent Mokhele, Z (Zimi)
3	2	Tournament Laerskool Welgemoed 12th Annual Chess Challenge 2022				Tournament Laerskool Welgemoed 12th Annual Chess Challenge 2022
		date 2022-02-19	rnd 2	type Rapid	result 1	date 2022-02-19	rnd 3	type Rapid	result 1
		Opponent Meyer, K (Kylo)				Opponent Uchendu, D (David)

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	Phetheni ,A (Axolisiwe)	3	0.5	-283.3	3	0.5	-283.3	0	0	0	0	0	0
1	Phetheni ,A (Axolisiwe)	3	1115.5	832.2	3	1090	832.2	0	0	0	0	0	0
2	Mqadi ,O (Olethiwe)	3	0.5	-283.3	3	0.5	-283.3	0	0	0	0	0	0
2	Mqadi ,O (Olethiwe)	3	1162.3	878.9	3	1144.5	878.9	0	0	0	0	0	0
3	Kondlo ,H (Hlomla)	2	1	0	2	1	0	0	0	0	0	0	0
3	Kondlo ,H (Hlomla)	2	1159.5	1159.5	2	1173.8	1159.5	0	0	0	0	0	0
4	Hastig ,A (Amamkele)	2	2	425	2	2	425	0	0	0	0	0	0
4	Hastig ,A (Amamkele)	2	1165.4	1590.4	2	1166.4	1590.4	0	0	0	0	0	0
5	Neethling ,A (Ashrique)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
5	Neethling ,A (Ashrique)	2	1425.1	1212.6	2	1409.2	1212.6	0	0	0	0	0	0
6	Orwin ,J (Jennifer)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Orwin ,J (Jennifer)	2	1359.1	934.1	2	1341.2	934.1	0	0	0	0	0	0
7	Hart-Davis ,K (Katherine)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	Hart-Davis ,K (Katherine)	2	1092.6	667.6	2	1069.4	667.6	0	0	0	0	0	0
8	Grove ,E (Emily)	2	0	-425	1	0	-425	1	0	-425	0	0	0
8	Grove ,E (Emily)	2	1290.4	865.4	1	1271	865.4	1	1031.2	865.4	0	0	0
9	Mokhele ,Z (Zimi)	2	2	425	1	1	425	1	1	425	0	0	0
9	Mokhele ,Z (Zimi)	2	1050.9	1475.9	1	1088.8	1475.9	1	1098.8	1475.9	0	0	0
10	Bellini ,G (Gemma)	2	0	-425	1	0	-425	1	0	-425	0	0	0
10	Bellini ,G (Gemma)	2	1296.4	871.4	1	1167.2	871.4	1	1232.7	871.4	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Williamson, S (Sarah)

Ratings

Game statistics

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms