Chess South Africa Ratings Database

PLAYER PAGE

Personal

Bosi, S (Sithembiso)

Chess SA id

2140308672

FIDE id

Date of birth

2014-03-25 (U14)

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

Item	Main	Standard	Rapid	Blitz
Rating	1189	1187.6	1200	1200
Raw rating	1186.4	1185.5	1200	1200
Weighted rating	1189	1187.6	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	-0.4	-0.4	0	0
New rating	1188.6	1187.3	1200	1200
Analysis
Rating	1189	1187.6	1200	1200
Raw rating	1186.4	1185.5	1200	1200
Weighted rating	1189	1187.6	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	1188.6	1187.3	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1188.6	1187.3	1200	1200
Temp new rating +/-	-0.4	-0.4	0	0
Final new rating +/-	-0.4	-0.4	0	0
New rating	1188.6	1187.3	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
2026-01-01	1186.4	1185.5	1200	1200
2025-11-30	1186.4	1185.5	1200	1200
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
2024-11-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-06-01	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

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	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	Matyila ,S (Sihlangule)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Matyila ,S (Sihlangule)	1	1200	775	1	1200	775	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	Mdake ,Z (Zingce)	1	1	425	1	1	425	0	0	0	0	0	0
5	Mdake ,Z (Zingce)	1	1200	1625	1	1200	1625	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	Schreinders ,M (Mia)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Schreinders ,M (Mia)	1	1389	964	1	1392.9	964	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

Ratings

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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