Chess South Africa Ratings Database

PLAYER PAGE

Personal

Ngcobo, S (Sibulelo)

Chess SA id

2150160212

FIDE id

Date of birth

2015-09-15 (U12)

Gender

Female

Region

King Cetshwayo (KUR)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-20

Personal details last changed

1900-01-01

Junior GPX Games

32.5

Junior GPX Points

1227.9

Item	Main	Standard	Rapid	Blitz
Rating	1299.4	1312.8	1271.8	1200
Raw rating	1291.4	1312.8	1230.4	1200
Weighted rating	1299.4	1288	1271.8	1200
Weighted performance	1179.4	1223.6	1136	0
Floor	871.2	872	808.6	700
K-factor	36	36	36	36
Min/Max rating change allowed	145.6	141.2	158.8	165.8
Highest rating	1377.8 2024-09-01	1372 2025-05-05	1308.6 2025-09-01	1200 2018-10-01
Highest raw rating	1371.2 2025-05-05	1372 2025-05-05	1308.6 2025-09-01	1200 2024-03-01
Highest weighted rating	1299.4 2025-09-30	1288 2025-09-30	1274.3 2025-09-01	1200 2018-10-01
Highest weighted performance	1377.8 2025-05-05	1372 2024-07-01	1305.9 2024-09-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	2.4	0	-2.5	0
New rating	1301.8	1312.8	1269.3	1200
Analysis
Rating	1299.4	1312.8	1271.8	1200
Raw rating	1291.4	1312.8	1230.4	1200
Weighted rating	1299.4	1288	1271.8
Weighted performance	1179.4	1223.6	1136
K-factor	36	36	36	36
Floor	871.2	872	808.6	700
Max/Min rating change allowed	145.6	141.2	158.8	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	1291.4	1312.8	1230.4	1200
New weighted rating	1301.8	1293.5	1269.3	1200
New weighted performance	1179	1223.1	1135.6	0
Temp new rating	1301.8	1312.8	1269.3	1200
Temp new rating +/-	2.4	0	-2.5	0
Final new rating +/-	2.4	0	-2.5	0
New rating	1301.8	1312.8	1269.3	1200
New K-factor	36	36	36	36
New floor	871.2	872	808.6	700

Item	Main	Standard	Rapid
	0	0	0
	32	23	9
	36	31	5
	22	11	11
	0	0	0
	0	0	0
History	90	65	25

Games since
	Main 73	Standard 54		Rapid 19		Blitz 0
Gender	Female
Age group	U12
Region	King Cetshwayo (KUR)
Province	KwaZulu Natal (KZ)
Main
	RSA		Province		Region
Overall	3200		206		44
Female	658		34		7
U12	487		37		10
U12 Female	141		8		2
Standard
	RSA		Province		Region
Overall	2931		166		32
Female	596		24		7
U12	426		24		6
U12 Female	116		3		2
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	32	16.5	51.56	13.3	1273.2	1286.5
Standard	23	13.5	58.7	73.9	1246.5	1320.4
Rapid	9	3	33.33	-141.7	1341.6	1199.9
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	90	50	55.56	47.2	1227.1	1274.3
Standard	65	36.5	56.15	52.3	1223.3	1275.6
Rapid	25	13.5	54	34	1237	1271
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1291.4	1312.8	1230.4	1200
2025-09-01	1344.2	1322.2	1308.6	1200
2025-08-01	1332.9	1322.2	1283.1	1200
2025-07-01	1332.9	1322.2	1283.1	1200
2025-06-01	1332.9	1322.2	1283.1	1200
2025-05-01	1371.2	1372	1283.1	1200
2025-04-01	1352.9	1349.2	1283.1	1200
2025-03-01	1324.1	1313	1283.1	1200
2025-02-01	1333.8	1328.1	1283.1	1200
2025-01-01	1310.6	1297.6	1283.1	1200
2024-12-01	1310.6	1297.6	1283.1	1200
2024-11-01	1285.5	1261.6	1283.1	1200
2024-10-01	1285.5	1261.6	1283.1	1200
2024-09-01	1285.5	1261.6	1283.1	1200
2024-08-01	1264.5	1261.6	1233.8	1200
2024-07-01	1222.4	1212.3	1233.8	1200
2024-06-01	1206.6	1192.9	1233.8	1200
2024-08-01	1133.5	1099.1	1233.8	1200
2024-04-01	1133.5	1099.1	1233.8	1200
2024-03-01	1133.5	1099.1	1233.8	1200
2024-02-01	1167.9	1137.3	1233.8	1200
2024-01-01	1167.9	1137.3	1233.8	1200
2023-12-01	1167.9	1137.3	1233.8	1200
2023-11-01	1167.9	1137.3	1233.8	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 Umhlathuze Mayoral Cup (U14 Girls)	2025-09-20	2025-09-20	Standard	King Cetshwayo (KUR)	5	5	2.5	Yes	Analysis
2	2025 KZN Provincial Trials (U12)	2025-09-06	2025-09-06	Rapid	Ethekwini (KED)	6	5	0	Yes	Analysis
3	2025 King Cetshwayo Inter-School Teams Junior Primary (Intermediate)	2025-08-02	2025-08-02	Rapid	King Cetshwayo (KUR)	5	4	3	Yes	Analysis
4	2025 King Cetshwayo Winter Open (U12)	2025-05-17	2025-05-17	Standard	King Cetshwayo (KUR)	5	4	1	Yes	Analysis
5	2025 King Cetshwayo Anniversary (U12 Girls)	2025-04-12	2025-04-12	Standard	King Cetshwayo (KUR)	5	4	3	Yes	Analysis
6	2025 Kinng Cetshwayo Championship (U12 Girls)	2025-03-01	2025-03-01	Standard	King Cetshwayo (KUR)	5	5	4	Yes	Analysis
7	2025 King Cetshwayo Open (U12)	2025-02-15	2025-02-15	Standard	King Cetshwayo (KUR)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Umhlathuze Mayoral Cup (U14 Girls)	2025-09-20	2025-09-20	Standard	King Cetshwayo (KUR)	5	5	2.5	Yes	Analysis
2	2025 KZN Provincial Trials (U12)	2025-09-06	2025-09-06	Rapid	Ethekwini (KED)	6	5	0	Yes	Analysis
3	2025 King Cetshwayo Inter-School Teams Junior Primary (Intermediate)	2025-08-02	2025-08-02	Rapid	King Cetshwayo (KUR)	5	4	3	Yes	Analysis
4	2025 King Cetshwayo Winter Open (U12)	2025-05-17	2025-05-17	Standard	King Cetshwayo (KUR)	5	4	1	Yes	Analysis
5	2025 King Cetshwayo Anniversary (U12 Girls)	2025-04-12	2025-04-12	Standard	King Cetshwayo (KUR)	5	4	3	Yes	Analysis
6	2025 Kinng Cetshwayo Championship (U12 Girls)	2025-03-01	2025-03-01	Standard	King Cetshwayo (KUR)	5	5	4	Yes	Analysis
7	2025 King Cetshwayo Open (U12)	2025-02-15	2025-02-15	Standard	King Cetshwayo (KUR)	5	5	3	Yes	Analysis
8	2024 King Cetshwayo Junior & Intermediate Tournament 2024 (U10 Girls)	2024-11-02	2024-11-02	Standard	King Cetshwayo (KUR)	5	5	4	Yes	Analysis
9	2024 King Cetswayo Chess Womens Championship (U14)	2024-08-24	2024-08-24	Rapid	King Cetshwayo (KUR)	5	5	4	Yes	Analysis
10	2024 Nelson Mandela Chess Tournament (U10)	2024-07-20	2024-07-29	Standard	King Cetshwayo (KUR)	5	2	2	Yes	Analysis
11	South African Open Chess Championship 2024 (C)	2024-07-04	2024-07-07	Standard	Ethekwini (KED)	7	7	3.5	Yes	Analysis
12	2024 King Cetshwayo Winter Open (U10)	2024-06-08	2024-06-08	Standard	King Cetshwayo (KUR)	5	5	3	Yes	Analysis
13	2024 King Cesthwayo Chess Anniversary (U10)	2024-04-20	2024-04-21	Standard	King Cetshwayo (KUR)	7	7	5.5	Yes	Analysis
14	2024 King Cetshwayo Chess Open (C)	2024-02-17	2024-02-18	Standard	King Cetshwayo (KUR)	7	5	1	Yes	Analysis
15	2023 King Cetshwayo Junior & Intermediate Chess Tournament (U10)	2023-10-28	2023-10-28	Rapid	King Cetshwayo (KUR)	5	5	3	Yes	Analysis
16	UniZulu Tournament 2023 (U10+U12)	2023-09-23	2023-09-23	Standard	King Cetshwayo (KUR)	6	5	0.5	Yes	Analysis
17	2023 King Cetshwayo Winter Open (U10)	2023-07-29	2023-07-29	Rapid	King Cetshwayo (KUR)	6	6	3.5	Yes	Analysis
18	2023 King Cetshwayo Chess Anniversary (U10)	2023-04-22	2023-04-23	Standard	King Cetshwayo (KUR)	7	6	3.5	Yes	Analysis

#	Games	Start				End
1	6	Tournament 2025 Kinng Cetshwayo Championship				Tournament 2025 King Cetshwayo Anniversary
		date 2025-03-01	rnd 2	type Standard	result 1	date 2025-04-12	rnd 3	type Standard	result 1
		Opponent Nyawo, Z (Zothando)				Opponent Musliah, S (Siri)
2	6	Tournament South African Open Chess Championship 2024				Tournament 2024 King Cetswayo Chess Womens Championship
		date 2024-07-06	rnd 6	type Standard	result 0.5	date 2024-08-24	rnd 2	type Rapid	result 1
		Opponent Nirmal, D (Dhiya Milyka)				Opponent Kunene, H (Hlelolwenkosi)
3	6	Tournament 2024 King Cesthwayo Chess Anniversary				Tournament 2024 King Cetshwayo Winter Open
		date 2024-04-20	rnd 3	type Standard	result 1	date 2024-06-08	rnd 1	type Standard	result 1
		Opponent Mulholland, L (Luka)				Opponent Mntambo, T (Thandiwe)

#	Games	Start				End
1	6	Tournament 2025 Kinng Cetshwayo Championship				Tournament 2025 King Cetshwayo Anniversary
		date 2025-03-01	rnd 2	type Standard	result 1	date 2025-04-12	rnd 3	type Standard	result 1
		Opponent Nyawo, Z (Zothando)				Opponent Musliah, S (Siri)
2	6	Tournament South African Open Chess Championship 2024				Tournament 2024 King Cetshwayo Junior & Intermediate Tournament 2024
		date 2024-07-06	rnd 6	type Standard	result 0.5	date 2024-11-02	rnd 2	type Standard	result 1
		Opponent Nirmal, D (Dhiya Milyka)				Opponent Hutton, T (Tanha)
3	6	Tournament 2024 King Cesthwayo Chess Anniversary				Tournament 2024 King Cetshwayo Winter Open
		date 2024-04-20	rnd 3	type Standard	result 1	date 2024-06-08	rnd 1	type Standard	result 1
		Opponent Mulholland, L (Luka)				Opponent Mntambo, T (Thandiwe)

#	Games	Start				End
1	4	Tournament 2024 King Cetswayo Chess Womens Championship				Tournament 2025 King Cetshwayo Inter-School Teams Junior Primary
		date 2024-08-24	rnd 4	type Rapid	result 1	date 2025-08-02	rnd 3	type Rapid	result 1
		Opponent Mthethwa, A (Akhokuhle)				Opponent Lombard, D (Dustin)
2	4	Tournament 2023 King Cetshwayo Junior & Intermediate Chess Tournament				Tournament 2024 King Cetswayo Chess Womens Championship
		date 2023-10-28	rnd 4	type Rapid	result 1	date 2024-08-24	rnd 2	type Rapid	result 1
		Opponent Mkhwanazi, L (Luthando)				Opponent Kunene, H (Hlelolwenkosi)
3	3	Tournament 2023 King Cetshwayo Winter Open				Tournament 2023 King Cetshwayo Winter Open
		date 2023-07-29	rnd 1	type Rapid	result 0.5	date 2023-07-29	rnd 3	type Rapid	result 1
		Opponent Ramdhani, D (Devarsh)				Opponent Mkhize, Z (Zizwe)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament 2025 Kinng Cetshwayo Championship				Tournament 2025 King Cetshwayo Anniversary
		date 2025-03-01	rnd 2	type Standard	result 1	date 2025-04-12	rnd 3	type Standard	result 1
		Opponent Nyawo, Z (Zothando)				Opponent Musliah, S (Siri)
2	5	Tournament South African Open Chess Championship 2024				Tournament 2024 King Cetswayo Chess Womens Championship
		date 2024-07-07	rnd 7	type Standard	result 1	date 2024-08-24	rnd 2	type Rapid	result 1
		Opponent Pillay, Y (Yishai)				Opponent Kunene, H (Hlelolwenkosi)
3	4	Tournament 2024 King Cetswayo Chess Womens Championship				Tournament 2024 King Cetshwayo Junior & Intermediate Tournament 2024
		date 2024-08-24	rnd 4	type Rapid	result 1	date 2024-11-02	rnd 2	type Standard	result 1
		Opponent Mthethwa, A (Akhokuhle)				Opponent Hutton, T (Tanha)

#	Games	Start				End
1	6	Tournament 2025 Kinng Cetshwayo Championship				Tournament 2025 King Cetshwayo Anniversary
		date 2025-03-01	rnd 2	type Standard	result 1	date 2025-04-12	rnd 3	type Standard	result 1
		Opponent Nyawo, Z (Zothando)				Opponent Musliah, S (Siri)
2	5	Tournament South African Open Chess Championship 2024				Tournament 2024 King Cetshwayo Junior & Intermediate Tournament 2024
		date 2024-07-07	rnd 7	type Standard	result 1	date 2024-11-02	rnd 2	type Standard	result 1
		Opponent Pillay, Y (Yishai)				Opponent Hutton, T (Tanha)
3	4	Tournament 2024 King Cesthwayo Chess Anniversary				Tournament 2024 King Cetshwayo Winter Open
		date 2024-04-21	rnd 5	type Standard	result 1	date 2024-06-08	rnd 1	type Standard	result 1
		Opponent Musliah, S (Siri)				Opponent Mntambo, T (Thandiwe)

#	Games	Start				End
1	4	Tournament 2024 King Cetswayo Chess Womens Championship				Tournament 2025 King Cetshwayo Inter-School Teams Junior Primary
		date 2024-08-24	rnd 4	type Rapid	result 1	date 2025-08-02	rnd 3	type Rapid	result 1
		Opponent Mthethwa, A (Akhokuhle)				Opponent Lombard, D (Dustin)
2	4	Tournament 2023 King Cetshwayo Junior & Intermediate Chess Tournament				Tournament 2024 King Cetswayo Chess Womens Championship
		date 2023-10-28	rnd 4	type Rapid	result 1	date 2024-08-24	rnd 2	type Rapid	result 1
		Opponent Mkhwanazi, L (Luthando)				Opponent Kunene, H (Hlelolwenkosi)
3	2	Tournament 2023 King Cetshwayo Winter Open				Tournament 2023 King Cetshwayo Winter Open
		date 2023-07-29	rnd 2	type Rapid	result 1	date 2023-07-29	rnd 3	type Rapid	result 1
		Opponent Opperman, A (Aidan)				Opponent Mkhize, Z (Zizwe)

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	Simelani ,Y (Yali)	5	1	-255	4	1	-212.5	1	0	-425	0	0	0
1	Simelani ,Y (Yali)	5	1218.5	963.5	4	1200.2	1006	1	1195.4	793.5	0	0	0
2	Nkabinde ,L (Landile)	4	0	-425	3	0	-425	1	0	-425	0	0	0
2	Nkabinde ,L (Landile)	4	1285.5	860.5	3	1284.4	860.5	1	1200	860.5	0	0	0
3	Kunene ,S (Sbongokuhle)	3	3	425	3	3	425	0	0	0	0	0	0
3	Kunene ,S (Sbongokuhle)	3	1134.6	1559.6	3	1122	1559.6	0	0	0	0	0	0
4	Myeza ,Q (Qhawe)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
4	Myeza ,Q (Qhawe)	3	1195.9	1054.3	3	1172.2	1054.3	0	0	0	0	0	0
5	Musliah ,S (Siri)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
5	Musliah ,S (Siri)	3	1167.6	1309.2	3	1160.2	1309.2	0	0	0	0	0	0
6	Hlophe ,M (Mayenziwe)	3	0	-425	2	0	-425	1	0	-425	0	0	0
6	Hlophe ,M (Mayenziwe)	3	1352.6	927.6	2	1361.1	927.6	1	1312.3	927.6	0	0	0
7	Naidoo ,E (Ella)	3	0.5	-283.3	2	0.5	-212.5	1	0	-425	0	0	0
7	Naidoo ,E (Ella)	3	1210.2	926.8	2	1198.2	997.7	1	1200	785.2	0	0	0
8	Kunene ,A (Ahlobile)	2	1	0	2	1	0	0	0	0	0	0	0
8	Kunene ,A (Ahlobile)	2	1227.3	1227.3	2	1209.3	1227.3	0	0	0	0	0	0
9	Naidoo ,D (Dhiyara)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
9	Naidoo ,D (Dhiyara)	2	1220.9	1433.4	2	1222	1433.4	0	0	0	0	0	0
10	Msimang ,E (Emihle)	2	2	425	2	2	425	0	0	0	0	0	0
10	Msimang ,E (Emihle)	2	1198.2	1623.2	2	1197.5	1623.2	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

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PLAYER PAGE

Personal

Ngcobo, S (Sibulelo)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms