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

23.5

Junior GPX Points

959.6

Item	Main	Standard	Rapid	Blitz
Rating	1179.7	1176.8	1196	1200
Raw rating	1114.3	1125.8	1150	1200
Weighted rating	1179.7	1176.8	1196	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	-5.7	-4.6	-3.8	0
New rating	1173.9	1172.2	1192.2	1200
Analysis
Rating	1179.7	1176.8	1196	1200
Raw rating	1114.3	1125.8	1150	1200
Weighted rating	1179.7	1176.8	1196
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	1173.9	1172.2	1192.2	1200
New weighted performance	0	0	0	0
Temp new rating	1173.9	1172.2	1192.2	1200
Temp new rating +/-	-5.7	-4.6	-3.8	0
Final new rating +/-	-5.7	-4.6	-3.8	0
New rating	1173.9	1172.2	1192.2	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
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
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-06-01	1200	1200	1200	1200
2024-08-01	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
2023-11-01	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	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

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	Ntombana ,L (Lumanyano)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Ntombana ,L (Lumanyano)	2	1277.2	852.2	2	1253.3	852.2	0	0	0	0	0	0
2	Mfeketho ,S (Sisipho)	2	1	0	2	1	0	0	0	0	0	0	0
2	Mfeketho ,S (Sisipho)	2	1199.2	1199.2	2	1199	1199.2	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	Mkhize ,A (Anothe)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Mkhize ,A (Anothe)	1	1191.9	766.9	1	1194.6	766.9	0	0	0	0	0	0
5	Arthur ,Z (Zachary)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Arthur ,Z (Zachary)	1	1249.6	824.6	1	1211.1	824.6	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	Mdlalose ,S (Samkelo)	1	1	425	1	1	425	0	0	0	0	0	0
7	Mdlalose ,S (Samkelo)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Zuma ,S (Siphesande)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Zuma ,S (Siphesande)	1	1097	672	1	1076	672	0	0	0	0	0	0
9	Cason ,D (Dante)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Cason ,D (Dante)	1	1201.7	776.7	1	1168.8	776.7	0	0	0	0	0	0
10	Nadesan ,M (Mikhail)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Nadesan ,M (Mikhail)	1	1480.9	1055.9	1	1428	1055.9	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

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Statistics

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PLAYER PAGE

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