Chess South Africa Ratings Database

PLAYER PAGE

Personal

Nkosi, S (Sammy)

Chess SA id

2150311246

FIDE id

Date of birth

2015-05-13 (U12)

Gender

Female

Region

Ethekwini (KED)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-20

Personal details last changed

2025-03-12

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1163.3	1163.7	1185	1200
Raw rating	1114.3	1125.8	1150	1200
Weighted rating	1163.3	1163.7	1185	1200
Weighted performance	0	0	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	187.3	184.3	178.1	165.8
Highest rating	1200 2024-09-01	1200 2024-09-01	1200 2024-09-01	1200 2024-09-01
Highest raw rating	1200 2024-09-01	1200 2024-09-01	1200 2024-09-01	1200 2024-09-01
Highest weighted rating	1200 2024-09-01	1200 2024-09-01	1200 2024-09-01	1200 2024-09-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2024-09-01	1200 2024-09-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-4.9	-3.9	-3.3	0
New rating	1158.4	1159.8	1181.7	1200
Analysis
Rating	1163.3	1163.7	1185	1200
Raw rating	1114.3	1125.8	1150	1200
Weighted rating	1163.3	1163.7	1185
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	187.3	184.3	178.1	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	1114.3	1125.8	1150	1200
New weighted rating	1158.4	1159.8	1181.7	1200
New weighted performance	0	0	0	0
Temp new rating	1158.4	1159.8	1181.7	1200
Temp new rating +/-	-4.9	-3.9	-3.3	0
Final new rating +/-	-4.9	-3.9	-3.3	0
New rating	1158.4	1159.8	1181.7	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	26	21	5
	4	4	0
	0	0	0
	0	0	0
	0	0	0
History	30	25	5

Games since
	Main 30	Standard 25		Rapid 5		Blitz 0
Gender	Female
Age group	U12
Region	Ethekwini (KED)
Province	KwaZulu Natal (KZ)
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	26	4.5	17.31	-277.9	1252.5	974.6
Standard	21	3.5	16.67	-283.3	1253.7	970.4
Rapid	5	1	20	-255	1247.1	992.1
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	30	6	20	-255	1230.9	975.9
Standard	25	5	20	-255	1227.7	972.7
Rapid	5	1	20	-255	1247.1	992.1
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1114.3	1125.8	1150	1200
2025-11-30	1114.3	1125.8	1150	1200
2025-11-01	1114.3	1125.8	1150	1200
2025-09-30	1114.3	1125.8	1150	1200
2025-09-01	1182.8	1178	1200	1200
2025-08-01	1182.8	1178	1200	1200
2025-07-01	1186.7	1183	1200	1200
2025-06-01	1183	1179	1200	1200
2025-05-01	1188.1	1184.7	1200	1200
2025-04-01	1187.4	1184	1200	1200
2025-03-01	1188.9	1185.7	1200	1200
2025-02-01	1187.7	1184.2	1200	1200
2025-01-01	1166.5	1156.8	1200	1200
2024-12-01	1166.5	1156.8	1200	1200
2024-11-01	1166.5	1156.8	1200	1200
2024-10-01	1166.5	1156.8	1200	1200
2024-09-01	1200	1200	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	2025 Queens & Kings Chess Tournament (U12+U14)	2025-09-20	2025-09-20	Standard	Ethekwini (KED)	5	4	0	Yes	Analysis
2	2025 KwaZulu-Natal Women Championship (C)	2025-08-23	2025-08-23	Rapid	King Cetshwayo (KUR)	6	5	1	Yes	Analysis
3	2025 ECA 2nd Youth Trials (U12)	2025-07-26	2025-07-27	Standard	Ethekwini (KED)	6	6	1	Yes	Analysis
4	2025 KZN Open (C)	2025-05-02	2025-05-04	Standard	Ethekwini (KED)	7	7	1.5	Yes	Analysis
5	2025 ECA 1st Youth Trials (D)	2025-03-08	2025-03-09	Standard	Ethekwini (KED)	6	4	1	Yes	Analysis
6	Springboard Academy League 2024	2024-08-10	2024-08-24	Standard	Ethekwini (KED)	7	4	1.5	Yes	Analysis

#	Games	Start				End
1	2	Tournament 2025 KZN Open				Tournament 2025 KZN Open
		date 2025-05-03	rnd 4	type Standard	result 1	date 2025-05-03	rnd 5	type Standard	result 0.5
		Opponent Mngoma, L (Lubanzi)				Opponent Zikalala, P (Phumla)
2	1	Tournament 2025 KwaZulu-Natal Women Championship				Tournament 2025 KwaZulu-Natal Women Championship
		date 2025-08-23	rnd 5	type Rapid	result 1	date 2025-08-23	rnd 5	type Rapid	result 1
		Opponent Mzaca, I (Iminathi)				Opponent Mzaca, I (Iminathi)
3	1	Tournament 2025 ECA 2nd Youth Trials				Tournament 2025 ECA 2nd Youth Trials
		date 2025-07-26	rnd 2	type Standard	result 1	date 2025-07-26	rnd 2	type Standard	result 1
		Opponent Mdlalose, S (Samkelo)				Opponent Mdlalose, S (Samkelo)

#	Games	Start				End
1	2	Tournament 2025 KZN Open				Tournament 2025 KZN Open
		date 2025-05-03	rnd 4	type Standard	result 1	date 2025-05-03	rnd 5	type Standard	result 0.5
		Opponent Mngoma, L (Lubanzi)				Opponent Zikalala, P (Phumla)
2	1	Tournament 2025 ECA 2nd Youth Trials				Tournament 2025 ECA 2nd Youth Trials
		date 2025-07-26	rnd 2	type Standard	result 1	date 2025-07-26	rnd 2	type Standard	result 1
		Opponent Mdlalose, S (Samkelo)				Opponent Mdlalose, S (Samkelo)
3	1	Tournament 2025 ECA 1st Youth Trials				Tournament 2025 ECA 1st Youth Trials
		date 2025-03-08	rnd 2	type Standard	result 1	date 2025-03-08	rnd 2	type Standard	result 1
		Opponent Mfeketho, S (Sisipho)				Opponent Mfeketho, S (Sisipho)

#	Games	Start				End
1	1	Tournament 2025 KwaZulu-Natal Women Championship				Tournament 2025 KwaZulu-Natal Women Championship
		date 2025-08-23	rnd 5	type Rapid	result 1	date 2025-08-23	rnd 5	type Rapid	result 1
		Opponent Mzaca, I (Iminathi)				Opponent Mzaca, I (Iminathi)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament 2025 KwaZulu-Natal Women Championship				Tournament 2025 KwaZulu-Natal Women Championship
		date 2025-08-23	rnd 5	type Rapid	result 1	date 2025-08-23	rnd 5	type Rapid	result 1
		Opponent Mzaca, I (Iminathi)				Opponent Mzaca, I (Iminathi)
2	1	Tournament 2025 ECA 2nd Youth Trials				Tournament 2025 ECA 2nd Youth Trials
		date 2025-07-26	rnd 2	type Standard	result 1	date 2025-07-26	rnd 2	type Standard	result 1
		Opponent Mdlalose, S (Samkelo)				Opponent Mdlalose, S (Samkelo)
3	1	Tournament 2025 KZN Open				Tournament 2025 KZN Open
		date 2025-05-03	rnd 4	type Standard	result 1	date 2025-05-03	rnd 4	type Standard	result 1
		Opponent Mngoma, L (Lubanzi)				Opponent Mngoma, L (Lubanzi)

#	Games	Start				End
1	1	Tournament 2025 ECA 2nd Youth Trials				Tournament 2025 ECA 2nd Youth Trials
		date 2025-07-26	rnd 2	type Standard	result 1	date 2025-07-26	rnd 2	type Standard	result 1
		Opponent Mdlalose, S (Samkelo)				Opponent Mdlalose, S (Samkelo)
2	1	Tournament 2025 KZN Open				Tournament 2025 KZN Open
		date 2025-05-03	rnd 4	type Standard	result 1	date 2025-05-03	rnd 4	type Standard	result 1
		Opponent Mngoma, L (Lubanzi)				Opponent Mngoma, L (Lubanzi)
3	1	Tournament 2025 ECA 1st Youth Trials				Tournament 2025 ECA 1st Youth Trials
		date 2025-03-08	rnd 2	type Standard	result 1	date 2025-03-08	rnd 2	type Standard	result 1
		Opponent Mfeketho, S (Sisipho)				Opponent Mfeketho, S (Sisipho)

#	Games	Start				End
1	1	Tournament 2025 KwaZulu-Natal Women Championship				Tournament 2025 KwaZulu-Natal Women Championship
		date 2025-08-23	rnd 5	type Rapid	result 1	date 2025-08-23	rnd 5	type Rapid	result 1
		Opponent Mzaca, I (Iminathi)				Opponent Mzaca, I (Iminathi)

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	Mfeketho ,S (Sisipho)	2	1	0	2	1	0	0	0	0	0	0	0
1	Mfeketho ,S (Sisipho)	2	1199.2	1199.2	2	1199	1199.2	0	0	0	0	0	0
2	Ntombana ,L (Lumanyano)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Ntombana ,L (Lumanyano)	2	1277.2	852.2	2	1253.3	852.2	0	0	0	0	0	0
3	Narang ,J (Jasmindir)	2	0	-425	1	0	-425	1	0	-425	0	0	0
3	Narang ,J (Jasmindir)	2	1210.2	785.2	1	1199.7	785.2	1	1200	785.2	0	0	0
4	Ntombana ,S (Somilangaye)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Ntombana ,S (Somilangaye)	1	1199.4	774.4	1	1199.2	774.4	0	0	0	0	0	0
5	Ngcobo ,E (Enzokuhle)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Ngcobo ,E (Enzokuhle)	1	1200	775	1	1200	775	0	0	0	0	0	0
6	January ,L (Lathitha)	1	1	425	1	1	425	0	0	0	0	0	0
6	January ,L (Lathitha)	1	1104.4	1529.4	1	1093.2	1529.4	0	0	0	0	0	0
7	Ndlovu ,R (Ripfumelo)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Ndlovu ,R (Ripfumelo)	1	1161.1	736.1	1	1200	736.1	0	0	0	0	0	0
8	Zikalala ,P (Phumla)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
8	Zikalala ,P (Phumla)	1	1198.9	1198.9	1	1198.6	1198.9	0	0	0	0	0	0
9	Zuma ,S (Siphesande)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Zuma ,S (Siphesande)	1	1097	672	1	1076	672	0	0	0	0	0	0
10	Mkhize ,E (Esethu)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Mkhize ,E (Esethu)	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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Personal

Nkosi, S (Sammy)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms