Chess South Africa Ratings Database

PLAYER PAGE

Personal

Bosley, S (Sarah-Ann)

Chess SA id

207093992

FIDE id

Date of birth

2007-08-28 (U20)

Gender

Female

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2019-08-23

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1038	1010.4	1200	1200
Raw rating	1038	1010.4	1200	1200
Weighted rating	1038	1010.4	1200	1200
Weighted performance	119	119	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	208.9	217.2	165.8	165.8
Highest rating	1200 2018-02-01	1200 2018-02-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2018-02-01	1200 2018-02-01	1200 2024-03-01	1200 2024-03-01
Highest weighted rating	1200 2018-02-01	1200 2018-02-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2018-02-01	1200 2018-02-01	1200 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1038	1010.4	1200	1200
Analysis
Rating	1038	1010.4	1200	1200
Raw rating	1038	1010.4	1200	1200
Weighted rating	1038	1010.4	1200
Weighted performance	119	119	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	208.9	217.2	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	1038	1010.4	1200	1200
New weighted rating	1038	1010.4	1200	1200
New weighted performance	113.6	113.6	0	0
Temp new rating	1038	1010.4	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1038	1010.4	1200	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard
	0	0
	0	0
	0	0
	0	0
	0	0
	0	0
History	30	30

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Female
Age group	U20
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U20	-1		-1		-1
U20 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U20	-1		-1		-1
U20 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U20	-1		-1		-1
U20 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U20	-1		-1		-1
U20 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	25	8.5	34	-136	1137.2	1001.2
Standard	25	8.5	34	-136	1137.2	1001.2
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1038	1010.4	1200	1200
2025-09-30	1038	1010.4	1200	1200
2025-09-01	1038	1010.4	1200	1200
2025-08-01	1038	1010.4	1200	1200
2025-07-01	1038	1010.4	1200	1200
2025-06-01	1038	1010.4	1200	1200
2025-05-01	1038	1010.4	1200	1200
2025-04-01	1038	1010.4	1200	1200
2025-03-01	1038	1010.4	1200	1200
2025-02-01	1038	1010.4	1200	1200
2025-01-01	1038	1010.4	1200	1200
2024-12-01	1038	1010.4	1200	1200
2024-11-01	1038	1010.4	1200	1200
2024-10-01	1038	1010.4	1200	1200
2024-09-01	1038	1010.4	1200	1200
2024-08-01	1038	1010.4	1200	1200
2024-07-01	1038	1010.4	1200	1200
2024-09-01	1038	1010.4	1200	1200
2024-05-01	1038	1010.4	1200	1200
2024-04-01	1038	1010.4	1200	1200
2024-03-01	1038	1010.4	1200	1200
2024-02-01	1038	1010.4	1200	1200
2024-01-01	1038	1010.4	1200	1200
2023-12-01	1038	1010.4	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	2019 Gauteng School League Finals (U13 Girls)	2019-08-23	2019-08-23	Standard	Tshwane (GTP)	5	5	0.5	Yes	Analysis
2	2018 Gauteng League Final (U13 Girls)	2018-08-24	2018-08-24	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
3	D5 Primary Schools Teams 2018 (U13)	2018-08-17	2018-08-18	Standard	Ekurhuleni (GE)	6	5	1	Yes	Analysis
4	2018 Gauteng Secondary Schools Individual Chess Championships (U11 Girls)	2018-05-25	2018-05-25	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
5	D5 Schools Individuals (District Final)	2018-05-19	2018-05-19	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis

#	Games	Start				End
1	2	Tournament 2018 Gauteng League Final				Tournament 2018 Gauteng League Final
		date 2018-08-24	rnd 2	type Standard	result 1	date 2018-08-24	rnd 3	type Standard	result 1
		Opponent Mokone, O (Oratile)				Opponent Kgatle, N (Nthati)
2	2	Tournament 2018 Gauteng Secondary Schools Individual Chess Championships				Tournament 2018 Gauteng Secondary Schools Individual Chess Championships
		date 2018-05-25	rnd 3	type Standard	result 1	date 2018-05-25	rnd 4	type Standard	result 1
		Opponent Dube, H (Hlengiwe)				Opponent Mitchell, G (Gabriella)
3	2	Tournament D5 Schools Individuals				Tournament D5 Schools Individuals
		date 2018-05-19	rnd 1	type Standard	result 1	date 2018-05-19	rnd 2	type Standard	result 1
		Opponent Horn, M (Mia)				Opponent Lopez, C (Cay-Lee)

#	Games	Start				End
1	2	Tournament 2018 Gauteng League Final				Tournament 2018 Gauteng League Final
		date 2018-08-24	rnd 2	type Standard	result 1	date 2018-08-24	rnd 3	type Standard	result 1
		Opponent Mokone, O (Oratile)				Opponent Kgatle, N (Nthati)
2	2	Tournament 2018 Gauteng Secondary Schools Individual Chess Championships				Tournament 2018 Gauteng Secondary Schools Individual Chess Championships
		date 2018-05-25	rnd 3	type Standard	result 1	date 2018-05-25	rnd 4	type Standard	result 1
		Opponent Dube, H (Hlengiwe)				Opponent Mitchell, G (Gabriella)
3	2	Tournament D5 Schools Individuals				Tournament D5 Schools Individuals
		date 2018-05-19	rnd 1	type Standard	result 1	date 2018-05-19	rnd 2	type Standard	result 1
		Opponent Horn, M (Mia)				Opponent Lopez, C (Cay-Lee)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament 2018 Gauteng League Final				Tournament 2018 Gauteng League Final
		date 2018-08-24	rnd 2	type Standard	result 1	date 2018-08-24	rnd 3	type Standard	result 1
		Opponent Mokone, O (Oratile)				Opponent Kgatle, N (Nthati)
2	2	Tournament 2018 Gauteng Secondary Schools Individual Chess Championships				Tournament 2018 Gauteng Secondary Schools Individual Chess Championships
		date 2018-05-25	rnd 3	type Standard	result 1	date 2018-05-25	rnd 4	type Standard	result 1
		Opponent Dube, H (Hlengiwe)				Opponent Mitchell, G (Gabriella)
3	2	Tournament D5 Schools Individuals				Tournament D5 Schools Individuals
		date 2018-05-19	rnd 1	type Standard	result 1	date 2018-05-19	rnd 2	type Standard	result 1
		Opponent Horn, M (Mia)				Opponent Lopez, C (Cay-Lee)

#	Games	Start				End
1	2	Tournament 2018 Gauteng League Final				Tournament 2018 Gauteng League Final
		date 2018-08-24	rnd 2	type Standard	result 1	date 2018-08-24	rnd 3	type Standard	result 1
		Opponent Mokone, O (Oratile)				Opponent Kgatle, N (Nthati)
2	2	Tournament 2018 Gauteng Secondary Schools Individual Chess Championships				Tournament 2018 Gauteng Secondary Schools Individual Chess Championships
		date 2018-05-25	rnd 3	type Standard	result 1	date 2018-05-25	rnd 4	type Standard	result 1
		Opponent Dube, H (Hlengiwe)				Opponent Mitchell, G (Gabriella)
3	2	Tournament D5 Schools Individuals				Tournament D5 Schools Individuals
		date 2018-05-19	rnd 1	type Standard	result 1	date 2018-05-19	rnd 2	type Standard	result 1
		Opponent Horn, M (Mia)				Opponent Lopez, C (Cay-Lee)

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	Coetzer ,A (Anelda)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Coetzer ,A (Anelda)	2	1200	775	2	1200	775	0	0	0	0	0	0
2	Jacobs ,C (Carmin)	2	1	0	2	1	0	0	0	0	0	0	0
2	Jacobs ,C (Carmin)	2	1200.7	1200.7	2	1200.8	1200.7	0	0	0	0	0	0
3	Lopez ,C (Cay-Lee)	1	1	425	1	1	425	0	0	0	0	0	0
3	Lopez ,C (Cay-Lee)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
4	Khutshwa ,N (Ntombizikhona)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Khutshwa ,N (Ntombizikhona)	1	1018.8	593.8	1	1020.8	593.8	0	0	0	0	0	0
5	Ramaila ,E (Edward)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Ramaila ,E (Edward)	1	1200	775	1	1200	775	0	0	0	0	0	0
6	Shoba ,L (Louisa)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Shoba ,L (Louisa)	1	1200	775	1	1200	775	0	0	0	0	0	0
7	Legwai ,B (Basetsana)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Legwai ,B (Basetsana)	1	1248.5	823.5	1	1258.4	823.5	0	0	0	0	0	0
8	Radebe ,ST (Sphamamandla)	1	1	425	1	1	425	0	0	0	0	0	0
8	Radebe ,ST (Sphamamandla)	1	1208.9	1633.9	1	1200	1633.9	0	0	0	0	0	0
9	Seloane ,B (Bokang)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Seloane ,B (Bokang)	1	1156.2	731.2	1	1145.6	731.2	0	0	0	0	0	0
10	Mqathi ,C (Caleb)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Mqathi ,C (Caleb)	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

Bosley, S (Sarah-Ann)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms