Chess South Africa Ratings Database

PLAYER PAGE

Personal

Nkosi, S (Sibahlesonke)

Chess SA id

2110118136

FIDE id

Date of birth

2011-09-16 (U16)

Gender

Female

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-10-04

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1344.3	1324.5	1200	1200
Raw rating	1342.8	1318.4	1200	1200
Weighted rating	1344.3	1324.5	1200	1200
Weighted performance	1039.4	1040.7	0	0
Floor	982	981.6	700	700
K-factor	32	32	36	36
Min/Max rating change allowed	135.3	140.1	165.8	165.8
Highest rating	1498.1 2024-07-01	1497.7 2024-07-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1482 2024-08-01	1481.6 2024-08-01	1200 2024-03-01	1200 2024-03-01
Highest weighted rating	1334 2025-08-01	1316.7 2025-08-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1498.1 2024-07-01	1497.7 2024-07-01	1200 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	2.1	1.4	0	0
New rating	1346.5	1325.9	1200	1200
Analysis
Rating	1344.3	1324.5	1200	1200
Raw rating	1342.8	1318.4	1200	1200
Weighted rating	1344.3	1324.5	1200
Weighted performance	1039.4	1040.7	0
K-factor	32	32	36	36
Floor	982	981.6	700	700
Max/Min rating change allowed	135.3	140.1	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	1342.8	1318.4	1200	1200
New weighted rating	1346.5	1325.9	1200	1200
New weighted performance	1032.2	1033.6	0	0
Temp new rating	1346.5	1325.9	1200	1200
Temp new rating +/-	2.1	1.4	0	0
Final new rating +/-	2.1	1.4	0	0
New rating	1346.5	1325.9	1200	1200
New K-factor	32	32	36	36
New floor	982	981.6	700	700

Item	Main	Standard
	0	0
	0	0
	30	30
	9	9
	14	14
	0	0
History	58	58

Games since
	Main 30	Standard 30		Rapid 0		Blitz 0
Gender	Female
Age group	U16
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	2940		1065		296
Female	566		205		48
U16	471		169		48
U16 Female	115		42		10
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 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	58	31.5	54.31	36.6	1213.3	1250
Standard	58	31.5	54.31	36.6	1213.3	1250
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1342.8	1318.4	1200	1200
2025-09-30	1342.8	1318.4	1200	1200
2025-09-01	1342.8	1318.4	1200	1200
2025-08-01	1342.8	1318.4	1200	1200
2025-07-01	1342.8	1318.4	1200	1200
2025-06-01	1342.8	1318.4	1200	1200
2025-05-01	1342.8	1318.4	1200	1200
2025-04-01	1342.8	1318.4	1200	1200
2025-03-01	1342.8	1318.4	1200	1200
2025-02-01	1342.8	1318.4	1200	1200
2025-01-01	1342.8	1318.4	1200	1200
2024-12-01	1342.8	1318.4	1200	1200
2024-11-01	1342.8	1318.4	1200	1200
2024-10-01	1397.5	1381.1	1200	1200
2024-09-01	1482	1481.6	1200	1200
2024-08-01	1482	1481.6	1200	1200
2024-07-01	1394.3	1394.5	1200	1200
2024-09-01	1394.3	1394.5	1200	1200
2024-05-01	1236.6	1247.2	1200	1200
2024-04-01	1148.3	1140	1200	1200
2024-03-01	1148.3	1140	1200	1200
2024-02-01	1148.3	1140	1200	1200
2024-01-01	1148.3	1140	1200	1200
2023-12-01	1148.3	1140	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	Gauteng Top Schools 2024 (U13 Open)	2024-10-04	2024-10-04	Standard	Ekurhuleni (GE)	5	5	1	Yes	Analysis
2	Gauteng Schools Individuals Finals 2024 (U13 Girls)	2024-08-16	2024-08-16	Standard	Ekurhuleni (GE)	5	5	1	Yes	Analysis
3	Mojazo Cluster School League 2024 (High Schools)	2024-07-26	2024-07-26	Standard	West Rand (GWR)	5	5	5	Yes	Analysis
4	Siyavuma Primary Open 2024 (Junior)	2024-05-18	2024-05-18	Standard	Johannesburg Metro (GJM)	5	5	5	Yes	Analysis
5	D14 Schools Individuals 2024 (U13 Girls)	2024-05-11	2024-05-11	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
6	Mojazo Schools Cluster 2024 (U13)	2024-04-12	2024-04-12	Standard	West Rand (GWR)	5	5	5	Yes	Analysis
7	2023 Gauteng Top Schools (U13 Mixed)	2023-08-18	2023-08-18	Standard	West Rand (GWR)	5	5	1	Yes	Analysis
8	Mojazo Cluster Schools Individuals 2023 (U13 Girls)	2023-04-21	2023-04-21	Standard	Johannesburg Metro (GJM)	5	4	2	Yes	Analysis
9	2022 Gauteng Schools Team Championships (U13 Girls)	2022-08-27	2022-08-27	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
10	2022 Gauteng Schools Individual Chess Championship (U11 Girls)	2022-06-18	2022-06-18	Standard	Ekurhuleni (GE)	5	4	1	Yes	Analysis
11	2022 Gauteng Schools Individual Chess Championship (U11 Girls)	2022-06-18	2022-06-18	Standard	Ekurhuleni (GE)	5	5	2.5	Yes	Analysis
12	2019 Gauteng School League Finals (U9 Open)	2019-08-23	2019-08-23	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis

#	Games	Start				End
1	10	Tournament Siyavuma Primary Open 2024				Tournament Mojazo Cluster School League 2024
		date 2024-05-18	rnd 1	type Standard	result 1	date 2024-07-26	rnd 5	type Standard	result 1
		Opponent Mkhize, S (Sibongimpilo)				Opponent Khumalo, S (Sihle)
2	5	Tournament Mojazo Schools Cluster 2024				Tournament Mojazo Schools Cluster 2024
		date 2024-04-12	rnd 1	type Standard	result 1	date 2024-04-12	rnd 5	type Standard	result 1
		Opponent Majola, Z (Zamokuhle)				Opponent Ncube, K (Konkokuhle)
3	3	Tournament D14 Schools Individuals 2024				Tournament D14 Schools Individuals 2024
		date 2024-05-11	rnd 2	type Standard	result 1	date 2024-05-11	rnd 4	type Standard	result 1
		Opponent Magoro, H (Hope)				Opponent Matela, R (Reitumetse)

#	Games	Start				End
1	10	Tournament Siyavuma Primary Open 2024				Tournament Mojazo Cluster School League 2024
		date 2024-05-18	rnd 1	type Standard	result 1	date 2024-07-26	rnd 5	type Standard	result 1
		Opponent Mkhize, S (Sibongimpilo)				Opponent Khumalo, S (Sihle)
2	5	Tournament Mojazo Schools Cluster 2024				Tournament Mojazo Schools Cluster 2024
		date 2024-04-12	rnd 1	type Standard	result 1	date 2024-04-12	rnd 5	type Standard	result 1
		Opponent Majola, Z (Zamokuhle)				Opponent Ncube, K (Konkokuhle)
3	3	Tournament D14 Schools Individuals 2024				Tournament D14 Schools Individuals 2024
		date 2024-05-11	rnd 2	type Standard	result 1	date 2024-05-11	rnd 4	type Standard	result 1
		Opponent Magoro, H (Hope)				Opponent Matela, R (Reitumetse)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	10	Tournament Siyavuma Primary Open 2024				Tournament Mojazo Cluster School League 2024
		date 2024-05-18	rnd 1	type Standard	result 1	date 2024-07-26	rnd 5	type Standard	result 1
		Opponent Mkhize, S (Sibongimpilo)				Opponent Khumalo, S (Sihle)
2	5	Tournament Mojazo Schools Cluster 2024				Tournament Mojazo Schools Cluster 2024
		date 2024-04-12	rnd 1	type Standard	result 1	date 2024-04-12	rnd 5	type Standard	result 1
		Opponent Majola, Z (Zamokuhle)				Opponent Ncube, K (Konkokuhle)
3	3	Tournament D14 Schools Individuals 2024				Tournament D14 Schools Individuals 2024
		date 2024-05-11	rnd 2	type Standard	result 1	date 2024-05-11	rnd 4	type Standard	result 1
		Opponent Magoro, H (Hope)				Opponent Matela, R (Reitumetse)

#	Games	Start				End
1	10	Tournament Siyavuma Primary Open 2024				Tournament Mojazo Cluster School League 2024
		date 2024-05-18	rnd 1	type Standard	result 1	date 2024-07-26	rnd 5	type Standard	result 1
		Opponent Mkhize, S (Sibongimpilo)				Opponent Khumalo, S (Sihle)
2	5	Tournament Mojazo Schools Cluster 2024				Tournament Mojazo Schools Cluster 2024
		date 2024-04-12	rnd 1	type Standard	result 1	date 2024-04-12	rnd 5	type Standard	result 1
		Opponent Majola, Z (Zamokuhle)				Opponent Ncube, K (Konkokuhle)
3	3	Tournament D14 Schools Individuals 2024				Tournament D14 Schools Individuals 2024
		date 2024-05-11	rnd 2	type Standard	result 1	date 2024-05-11	rnd 4	type Standard	result 1
		Opponent Magoro, H (Hope)				Opponent Matela, R (Reitumetse)

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	Seobi ,S (Semakaleng)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Seobi ,S (Semakaleng)	1	1135.6	710.6	1	1120	710.6	0	0	0	0	0	0
2	Majola ,Z (Zamokuhle)	1	1	425	1	1	425	0	0	0	0	0	0
2	Majola ,Z (Zamokuhle)	1	1182.7	1607.7	1	1178.8	1607.7	0	0	0	0	0	0
3	Magoro ,H (Hope)	1	1	425	1	1	425	0	0	0	0	0	0
3	Magoro ,H (Hope)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
4	Ndinisa ,X (Xolani)	1	1	425	1	1	425	0	0	0	0	0	0
4	Ndinisa ,X (Xolani)	1	1197	1622	1	1196	1622	0	0	0	0	0	0
5	Opperman ,S (Sarah-Claire)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Opperman ,S (Sarah-Claire)	1	1173.1	748.1	1	1168.4	748.1	0	0	0	0	0	0
6	Mokoena ,L (Lungile)	1	1	425	1	1	425	0	0	0	0	0	0
6	Mokoena ,L (Lungile)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Gouws ,Z (Zanco)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Gouws ,Z (Zanco)	1	1296.9	871.9	1	1291.2	871.9	0	0	0	0	0	0
8	Dube ,N (Neo)	1	1	425	1	1	425	0	0	0	0	0	0
8	Dube ,N (Neo)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	Nzama ,N (Nomthandazo)	1	1	425	1	1	425	0	0	0	0	0	0
9	Nzama ,N (Nomthandazo)	1	1116.4	1541.4	1	1100.3	1541.4	0	0	0	0	0	0
10	Vermaak ,JJP (Jacobus)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Vermaak ,JJP (Jacobus)	1	1247.5	822.5	1	1254.8	822.5	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

Nkosi, S (Sibahlesonke)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms