Chess South Africa Ratings Database

PLAYER PAGE

Personal

Bosi, S (Sithembiso)

Chess SA id

2140308672

FIDE id

Date of birth

2014-03-25 (U12)

Gender

Female

Region

Amathole (EAL)

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

1146.4

Item	Main	Standard	Rapid	Blitz
Rating	1189.9	1188.5	1200	1200
Raw rating	1186.4	1185.5	1200	1200
Weighted rating	1189.9	1188.5	1200	1200
Weighted performance	0	0	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	169.1	169.3	165.8	165.8
Highest rating	1202.5 2024-08-01	1202.5 2024-08-01	1200 2024-10-01	1200 2024-10-01
Highest raw rating	1200 2024-08-01	1200 2024-08-01	1200 2024-10-01	1200 2024-10-01
Highest weighted rating	1200 2024-08-01	1200 2024-08-01	1200 2024-10-01	1200 2024-10-01
Highest weighted performance	1202.5 2024-08-01	1202.5 2024-08-01	1200 2024-10-01	1200 2024-10-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.5	-0.5	0	0
New rating	1189.5	1188	1200	1200
Analysis
Rating	1189.9	1188.5	1200	1200
Raw rating	1186.4	1185.5	1200	1200
Weighted rating	1189.9	1188.5	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	169.1	169.3	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	1186.4	1185.5	1200	1200
New weighted rating	1189.5	1188	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1189.5	1188	1200	1200
Temp new rating +/-	-0.5	-0.5	0	0
Final new rating +/-	-0.5	-0.5	0	0
New rating	1189.5	1188	1200	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard
	0	0
	12	12
	11	11
	0	0
	0	0
	0	0
History	23	23

Games since
	Main 23	Standard 23		Rapid 0		Blitz 0
Gender	Female
Age group	U12
Region	Amathole (EAL)
Province	Eastern Cape (EC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 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	12	4.5	37.5	-106.2	1274.7	1168.5
Standard	12	4.5	37.5	-106.2	1274.7	1168.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	23	9	39.13	-92.4	1244.8	1152.5
Standard	23	9	39.13	-92.4	1244.8	1152.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1186.4	1185.5	1200	1200
2025-09-30	1186.4	1185.5	1200	1200
2025-09-01	1191.8	1190.5	1200	1200
2025-08-01	1191.8	1190.5	1200	1200
2025-07-01	1191.8	1190.5	1200	1200
2025-06-01	1191.8	1190.5	1200	1200
2025-05-01	1191.8	1190.5	1200	1200
2025-04-01	1191.7	1190.5	1200	1200
2025-03-01	1192.3	1191	1200	1200
2025-02-01	1191.1	1189.6	1200	1200
2025-01-01	1170.8	1166	1200	1200
2024-12-01	1170.8	1166	1200	1200
2024-11-01	1170.8	1166	1200	1200
2024-10-01	1198.7	1198.4	1200	1200
2024-09-01	1198.7	1198.4	1200	1200
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-05-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	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	EC Closed 2025 (U12 Girls)	2025-09-06	2025-09-07	Standard	Nelson Mandela Bay (ENM)	6	6	2	Yes	Analysis
2	Holiday Fever 2025 (C)	2025-06-21	2025-06-21	Rapid	Sarah Baartman (ESB)	10	0	0	No	Analysis
3	Kouga Mayor's Cup 2025 (U11)	2025-03-08	2025-03-08	Standard	Sarah Baartman (ESB)	6	6	2.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	EC Closed 2025 (U12 Girls)	2025-09-06	2025-09-07	Standard	Nelson Mandela Bay (ENM)	6	6	2	Yes	Analysis
2	Holiday Fever 2025 (C)	2025-06-21	2025-06-21	Rapid	Sarah Baartman (ESB)	10	0	0	No	Analysis
3	Kouga Mayor's Cup 2025 (U11)	2025-03-08	2025-03-08	Standard	Sarah Baartman (ESB)	6	6	2.5	Yes	Analysis
4	Whiteville Primary Closed 2024	2024-10-19	2024-10-19	Standard	Amathole (EAL)	6	6	2	Yes	Analysis
5	Amathole West Schools Sub-District Trials 2024 (U15 Girls)	2024-08-07	2024-08-07	Standard	Amathole (EAL)	5	5	2.5	Yes	Analysis

#	Games	Start				End
1	3	Tournament Amathole West Schools Sub-District Trials 2024				Tournament Amathole West Schools Sub-District Trials 2024
		date 2024-08-07	rnd 2	type Standard	result 1	date 2024-08-07	rnd 4	type Standard	result 0.5
		Opponent Cola, L (Luminam)				Opponent Dayimani, A (Amhara)
2	2	Tournament Kouga Mayor's Cup 2025				Tournament Kouga Mayor's Cup 2025
		date 2025-03-08	rnd 3	type Standard	result 1	date 2025-03-08	rnd 4	type Standard	result 1
		Opponent Terblanche, C (Cooper)				Opponent Mooi, M (Mlungisi Esra)
3	2	Tournament Whiteville Primary Closed 2024				Tournament Kouga Mayor's Cup 2025
		date 2024-10-19	rnd 6	type Standard	result 1	date 2025-03-08	rnd 1	type Standard	result 0.5
		Opponent Mdake, Z (Zingce)				Opponent Mfabana, A (Alunamda)

#	Games	Start				End
1	3	Tournament Amathole West Schools Sub-District Trials 2024				Tournament Amathole West Schools Sub-District Trials 2024
		date 2024-08-07	rnd 2	type Standard	result 1	date 2024-08-07	rnd 4	type Standard	result 0.5
		Opponent Cola, L (Luminam)				Opponent Dayimani, A (Amhara)
2	2	Tournament Kouga Mayor's Cup 2025				Tournament Kouga Mayor's Cup 2025
		date 2025-03-08	rnd 3	type Standard	result 1	date 2025-03-08	rnd 4	type Standard	result 1
		Opponent Terblanche, C (Cooper)				Opponent Mooi, M (Mlungisi Esra)
3	2	Tournament Whiteville Primary Closed 2024				Tournament Kouga Mayor's Cup 2025
		date 2024-10-19	rnd 6	type Standard	result 1	date 2025-03-08	rnd 1	type Standard	result 0.5
		Opponent Mdake, Z (Zingce)				Opponent Mfabana, A (Alunamda)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Kouga Mayor's Cup 2025				Tournament Kouga Mayor's Cup 2025
		date 2025-03-08	rnd 3	type Standard	result 1	date 2025-03-08	rnd 4	type Standard	result 1
		Opponent Terblanche, C (Cooper)				Opponent Mooi, M (Mlungisi Esra)
2	2	Tournament Amathole West Schools Sub-District Trials 2024				Tournament Amathole West Schools Sub-District Trials 2024
		date 2024-08-07	rnd 2	type Standard	result 1	date 2024-08-07	rnd 3	type Standard	result 1
		Opponent Cola, L (Luminam)				Opponent Vena, L (Lerato)
3	1	Tournament EC Closed 2025				Tournament EC Closed 2025
		date 2025-09-07	rnd 6	type Standard	result 1	date 2025-09-07	rnd 6	type Standard	result 1
		Opponent Herrington, M (Mia)				Opponent Herrington, M (Mia)

#	Games	Start				End
1	2	Tournament Kouga Mayor's Cup 2025				Tournament Kouga Mayor's Cup 2025
		date 2025-03-08	rnd 3	type Standard	result 1	date 2025-03-08	rnd 4	type Standard	result 1
		Opponent Terblanche, C (Cooper)				Opponent Mooi, M (Mlungisi Esra)
2	2	Tournament Amathole West Schools Sub-District Trials 2024				Tournament Amathole West Schools Sub-District Trials 2024
		date 2024-08-07	rnd 2	type Standard	result 1	date 2024-08-07	rnd 3	type Standard	result 1
		Opponent Cola, L (Luminam)				Opponent Vena, L (Lerato)
3	1	Tournament EC Closed 2025				Tournament EC Closed 2025
		date 2025-09-07	rnd 6	type Standard	result 1	date 2025-09-07	rnd 6	type Standard	result 1
		Opponent Herrington, M (Mia)				Opponent Herrington, M (Mia)

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	Vena ,L (Lerato)	1	1	425	1	1	425	0	0	0	0	0	0
1	Vena ,L (Lerato)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
2	Mfabana ,A (Alunamda)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
2	Mfabana ,A (Alunamda)	1	1334.4	1334.4	1	1346.1	1334.4	0	0	0	0	0	0
3	Mahlontlwana ,A (Avuzwa)	1	1	425	1	1	425	0	0	0	0	0	0
3	Mahlontlwana ,A (Avuzwa)	1	1265.6	1690.6	1	1264.6	1690.6	0	0	0	0	0	0
4	Ntoshe ,K (Kungentando)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Ntoshe ,K (Kungentando)	1	1200	775	1	1200	775	0	0	0	0	0	0
5	Matyila ,S (Sihlangule)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Matyila ,S (Sihlangule)	1	1200	775	1	1200	775	0	0	0	0	0	0
6	Fihlani ,I (Imihle)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Fihlani ,I (Imihle)	1	1274.9	849.9	1	1299.3	849.9	0	0	0	0	0	0
7	Sigungqa ,S (Siphelele)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Sigungqa ,S (Siphelele)	1	1200	775	1	1200	775	0	0	0	0	0	0
8	Mdake ,Z (Zingce)	1	1	425	1	1	425	0	0	0	0	0	0
8	Mdake ,Z (Zingce)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	Mooi ,M (Mlungisi Esra)	1	1	425	1	1	425	0	0	0	0	0	0
9	Mooi ,M (Mlungisi Esra)	1	1195.8	1620.8	1	1195	1620.8	0	0	0	0	0	0
10	Qaba ,K (Khazimla)	1	1	425	1	1	425	0	0	0	0	0	0
10	Qaba ,K (Khazimla)	1	1200	1625	1	1200	1625	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

Bosi, S (Sithembiso)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms