Chess South Africa Ratings Database

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Personal

Sibidla, O (Onesisa)

Chess SA id

2130311515

FIDE id

Date of birth

2013-11-07 (U14)

Gender

Female

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-27

Personal details last changed

2025-03-10

Junior GPX Games

33.5

Junior GPX Points

1130.9

Item	Main	Standard	Rapid	Blitz
Rating	1220.2	1230.5	1221.6	1200
Raw rating	1217.1	1222.6	1221.6	1200
Weighted rating	1220.2	1230.5	1204.4	1200
Weighted performance	1145.9	1138.8	1023.6	0
Floor	755.2	765.8	721.6	700
K-factor	36	36	36	36
Min/Max rating change allowed	161.8	160.6	160.8	165.8
Highest rating	1255.2 2025-04-01	1265.8 2025-04-01	1221.6 2025-08-01	1200 2024-09-01
Highest raw rating	1255.2 2025-04-01	1265.8 2025-04-01	1221.6 2025-08-01	1200 2024-09-01
Highest weighted rating	1255.2 2024-10-01	1230.5 2025-11-01	1200 2024-09-01	1200 2024-09-01
Highest weighted performance	1229.5 2024-09-01	1212.9 2024-09-01	1200 2024-09-01	1200 2024-09-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0.3	0.2	0	0
New rating	1220.5	1230.7	1221.6	1200
Analysis
Rating	1220.2	1230.5	1221.6	1200
Raw rating	1217.1	1222.6	1221.6	1200
Weighted rating	1220.2	1230.5	1204.4
Weighted performance	1145.9	1138.8	1023.6
K-factor	36	36	36	36
Floor	755.2	765.8	721.6	700
Max/Min rating change allowed	161.8	160.6	160.8	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	1217.1	1222.6	1221.6	1200
New weighted rating	1220.5	1230.7	1206	1200
New weighted performance	1139	1131.7	1017	0
Temp new rating	1220.5	1230.7	1221.6	1200
Temp new rating +/-	0.3	0.2	0	0
Final new rating +/-	0.3	0.2	0	0
New rating	1220.5	1230.7	1221.6	1200
New K-factor	36	36	36	36
New floor	755.2	765.8	721.6	700

Item	Main	Standard	Rapid
	0	0	0
	39	27	12
	23	4	19
	29	12	17
	4	0	4
	0	0	0
History	95	43	52

Games since
	Main 67	Standard 31		Rapid 36		Blitz 0
Gender	Female
Age group	U14
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	3980		1331		525
Female	931		374		115
U14	769		258		104
U14 Female	221		91		29
Standard
	RSA		Province		Region
Overall	3830		1088		443
Female	877		319		108
U14	735		202		84
U14 Female	213		78		30
Rapid
	RSA		Province		Region
Overall	1525		746		292
Female	312		169		40
U14	339		173		63
U14 Female	94		51		13
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U14	-1		-1		-1
U14 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	39	18	46.15	-32.7	1268.9	1236.2
Standard	27	13	48.15	-15.7	1271	1255.3
Rapid	12	5	41.67	-70.8	1264.2	1193.4
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	95	40.5	42.63	-62.6	1235.8	1173.1
Standard	43	17	39.53	-89	1254.2	1165.2
Rapid	52	23.5	45.19	-40.9	1220.6	1179.7
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1217.1	1222.6	1221.6	1200
2025-09-30	1234.7	1243.2	1221.6	1200
2025-09-01	1234.7	1243.2	1221.6	1200
2025-08-01	1234.7	1243.2	1221.6	1200
2025-07-01	1220.3	1243.2	1197.4	1200
2025-06-01	1230.1	1265.8	1197.3	1200
2025-05-01	1230.1	1265.8	1194.8	1200
2025-04-01	1255.2	1265.8	1197.9	1200
2025-03-01	1238.8	1252.1	1197.9	1200
2025-02-01	1203.1	1207.6	1197.6	1200
2025-01-01	1203.1	1207.6	1192	1200
2024-12-01	1203.1	1207.6	1192	1200
2024-11-01	1203.1	1207.6	1192	1200
2024-10-01	1209.7	1207.6	1200	1200
2024-09-01	1200	1200	1200	1200
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-09-01	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
2024-01-01	1200	1200	1200	1200
2023-12-01	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	Cape Town Chess Federation Club League 2025 (D)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	10	4	Yes	Analysis
2	4th Curro Durbanville Rapid Open 2025 (Intermediate)	2025-07-19	2025-07-19	Rapid	Cape Town (WCT)	7	6	3	Yes	Analysis
3	Cape Town Chess Junior League 2025 (U14)	2025-05-10	2025-05-31	Standard	Cape Town (WCT)	6	5	2	Yes	Analysis
4	Rylib Autumn Slam 2025 (U16)	2025-04-26	2025-04-26	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
5	CT Metro Schools Individual Closed 2025 (U13 Girls)	2025-03-01	2025-03-02	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
6	CT Metro District East Schools Chess Individuals Trials 2025 (U13 Girls)	2025-02-01	2025-02-02	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Cape Town Chess Federation Club League 2025 (D)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	10	4	Yes	Analysis
2	4th Curro Durbanville Rapid Open 2025 (Intermediate)	2025-07-19	2025-07-19	Rapid	Cape Town (WCT)	7	6	3	Yes	Analysis
3	Cape Town Chess Junior League 2025 (U14)	2025-05-10	2025-05-31	Standard	Cape Town (WCT)	6	5	2	Yes	Analysis
4	Rylib Autumn Slam 2025 (U16)	2025-04-26	2025-04-26	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
5	CT Metro Schools Individual Closed 2025 (U13 Girls)	2025-03-01	2025-03-02	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
6	CT Metro District East Schools Chess Individuals Trials 2025 (U13 Girls)	2025-02-01	2025-02-02	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
7	UCT Open Chess Championship 2024 (U12)	2024-10-12	2024-10-13	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
8	CT League 2024 (D)	2024-08-03	2024-08-03	Standard	Cape Town (WCT)	6	4	2	Yes	Analysis
9	Cape Town Junior League - Qualifier 2 2024 (U13)	2024-04-20	2024-04-20	Rapid	Cape Town (WCT)	6	5	0	Yes	Analysis
10	Cape Town Junior League - Qualifier 2 2024 (U13)	2024-04-20	2024-04-20	Rapid	Cape Town (WCT)	6	2	2	Yes	Analysis
11	Cape of Good Hope Open Chess Tournament 2024 (U12)	2024-02-17	2024-02-17	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
12	Rylib Summer Slam 2023 (Development)	2023-12-12	2023-12-12	Rapid	Cape Town (WCT)	6	5	3	Yes	Analysis
13	Western Cape Closed Championship 2023 (U12)	2023-09-23	2023-09-23	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
14	Cape Town Junior Chess League Finals 2023 (U12B)	2023-09-16	2023-09-16	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis
15	WP Club League 2023 (D2)	2023-08-05	2023-08-26	Standard	Cape Town (WCT)	6	2	0	Yes	Analysis
16	WP Closed 2023 (U12)	2023-06-16	2023-06-17	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis
17	District East Schools Chess Individual Trials 2023 (U11 Girls)	2023-02-03	2023-02-04	Standard	Cape Town (WCT)	6	4	0	Yes	Analysis
18	Summer Slam 2022 (C)	2022-12-13	2022-12-13	Rapid	Cape Town (WCT)	6	4	1.5	Yes	Analysis

#	Games	Start				End
1	4	Tournament 4th Curro Durbanville Rapid Open 2025				Tournament Cape Town Chess Federation Club League 2025
		date 2025-07-19	rnd 7	type Rapid	result 1	date 2025-08-16	rnd 4	type Standard	result 1
		Opponent Steyn, H (Herman)				Opponent Somai, J (Jhash)
2	3	Tournament Western Cape Closed Championship 2023				Tournament Rylib Summer Slam 2023
		date 2023-09-23	rnd 5	type Rapid	result 1	date 2023-12-12	rnd 2	type Rapid	result 1
		Opponent Potgieter, L (Lian)				Opponent Williams, C (Cam'Ron)
3	2	Tournament 4th Curro Durbanville Rapid Open 2025				Tournament 4th Curro Durbanville Rapid Open 2025
		date 2025-07-19	rnd 3	type Rapid	result 1	date 2025-07-19	rnd 4	type Rapid	result 1
		Opponent Langenhoven, J (Jasmin-Grace)				Opponent Robinson, L (Luke)

#	Games	Start				End
1	2	Tournament Cape Town Chess Junior League 2025				Tournament Cape Town Chess Junior League 2025
		date 2025-05-31	rnd 5	type Standard	result 1	date 2025-05-31	rnd 6	type Standard	result 1
		Opponent De Villliers, M (Megyle)				Opponent Mertz, K (Kian)
2	2	Tournament CT Metro Schools Individual Closed 2025				Tournament CT Metro Schools Individual Closed 2025
		date 2025-03-02	rnd 4	type Standard	result 1	date 2025-03-02	rnd 5	type Standard	result 1
		Opponent Eygelaar, A (Amelia)				Opponent Gaibe, A (Aisha)
3	2	Tournament CT Metro District East Schools Chess Individuals Trials 2025				Tournament CT Metro District East Schools Chess Individuals Trials 2025
		date 2025-02-02	rnd 5	type Standard	result 1	date 2025-02-02	rnd 6	type Standard	result 1
		Opponent Kahle, U (Uzuko)				Opponent Louw, L (Lize)

#	Games	Start				End
1	3	Tournament UCT Open Chess Championship 2024				Tournament Rylib Autumn Slam 2025
		date 2024-10-13	rnd 6	type Rapid	result 1	date 2025-04-26	rnd 2	type Rapid	result 1
		Opponent Wepener, Z (Zoe)				Opponent Gatyeni, K (Khayone)
2	3	Tournament Western Cape Closed Championship 2023				Tournament Rylib Summer Slam 2023
		date 2023-09-23	rnd 5	type Rapid	result 1	date 2023-12-12	rnd 2	type Rapid	result 1
		Opponent Potgieter, L (Lian)				Opponent Williams, C (Cam'Ron)
3	3	Tournament Summer Slam 2022				Tournament Cape Town Junior Chess League Finals 2023
		date 2022-12-13	rnd 5	type Rapid	result 0.5	date 2023-09-16	rnd 1	type Rapid	result 1
		Opponent Besten, L (Lerato)				Opponent Mankune, L (Likuwe)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Western Cape Closed Championship 2023				Tournament Rylib Summer Slam 2023
		date 2023-09-23	rnd 5	type Rapid	result 1	date 2023-12-12	rnd 2	type Rapid	result 1
		Opponent Potgieter, L (Lian)				Opponent Williams, C (Cam'Ron)
2	2	Tournament 4th Curro Durbanville Rapid Open 2025				Tournament 4th Curro Durbanville Rapid Open 2025
		date 2025-07-19	rnd 3	type Rapid	result 1	date 2025-07-19	rnd 4	type Rapid	result 1
		Opponent Langenhoven, J (Jasmin-Grace)				Opponent Robinson, L (Luke)
3	2	Tournament Cape Town Chess Junior League 2025				Tournament Cape Town Chess Junior League 2025
		date 2025-05-31	rnd 5	type Standard	result 1	date 2025-05-31	rnd 6	type Standard	result 1
		Opponent De Villliers, M (Megyle)				Opponent Mertz, K (Kian)

#	Games	Start				End
1	2	Tournament Cape Town Chess Junior League 2025				Tournament Cape Town Chess Junior League 2025
		date 2025-05-31	rnd 5	type Standard	result 1	date 2025-05-31	rnd 6	type Standard	result 1
		Opponent De Villliers, M (Megyle)				Opponent Mertz, K (Kian)
2	2	Tournament CT Metro Schools Individual Closed 2025				Tournament CT Metro Schools Individual Closed 2025
		date 2025-03-02	rnd 4	type Standard	result 1	date 2025-03-02	rnd 5	type Standard	result 1
		Opponent Eygelaar, A (Amelia)				Opponent Gaibe, A (Aisha)
3	2	Tournament CT Metro District East Schools Chess Individuals Trials 2025				Tournament CT Metro District East Schools Chess Individuals Trials 2025
		date 2025-02-02	rnd 5	type Standard	result 1	date 2025-02-02	rnd 6	type Standard	result 1
		Opponent Kahle, U (Uzuko)				Opponent Louw, L (Lize)

#	Games	Start				End
1	3	Tournament UCT Open Chess Championship 2024				Tournament Rylib Autumn Slam 2025
		date 2024-10-13	rnd 6	type Rapid	result 1	date 2025-04-26	rnd 2	type Rapid	result 1
		Opponent Wepener, Z (Zoe)				Opponent Gatyeni, K (Khayone)
2	3	Tournament Western Cape Closed Championship 2023				Tournament Rylib Summer Slam 2023
		date 2023-09-23	rnd 5	type Rapid	result 1	date 2023-12-12	rnd 2	type Rapid	result 1
		Opponent Potgieter, L (Lian)				Opponent Williams, C (Cam'Ron)
3	2	Tournament 4th Curro Durbanville Rapid Open 2025				Tournament 4th Curro Durbanville Rapid Open 2025
		date 2025-07-19	rnd 3	type Rapid	result 1	date 2025-07-19	rnd 4	type Rapid	result 1
		Opponent Langenhoven, J (Jasmin-Grace)				Opponent Robinson, L (Luke)

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	Pfukwa ,P (Palesa)	3	0	-425	3	0	-425	0	0	0	0	0	0
1	Pfukwa ,P (Palesa)	3	1431	1006	3	1416.2	1006	0	0	0	0	0	0
2	Peter ,S (Sisonke)	3	3	425	0	0	0	3	3	425	0	0	0
2	Peter ,S (Sisonke)	3	1082.2	1507.2	0	0	0	3	1142.5	1507.2	0	0	0
3	Bolton ,A (Alyssa)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Bolton ,A (Alyssa)	2	1297.6	872.6	2	1284.1	872.6	0	0	0	0	0	0
4	Mtintsilana ,A (Athabile)	2	0	-425	1	0	-425	1	0	-425	0	0	0
4	Mtintsilana ,A (Athabile)	2	1296.1	871.1	1	1329.6	871.1	1	1257.2	871.1	0	0	0
5	Manentsa ,K (Kungawo)	2	1	0	1	0	-425	1	1	425	0	0	0
5	Manentsa ,K (Kungawo)	2	1160	1160	1	1100	735	1	1205.7	1585	0	0	0
6	Gaibe ,A (Aisha)	1	1	425	1	1	425	0	0	0	0	0	0
6	Gaibe ,A (Aisha)	1	1179.3	1604.3	1	1184.3	1604.3	0	0	0	0	0	0
7	Ngobeni ,T (Thapelo)	1	1	425	1	1	425	0	0	0	0	0	0
7	Ngobeni ,T (Thapelo)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Carelse ,N (Nikita)	1	1	425	1	1	425	0	0	0	0	0	0
8	Carelse ,N (Nikita)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	Somai ,J (Jhash)	1	1	425	1	1	425	0	0	0	0	0	0
9	Somai ,J (Jhash)	1	1436.7	1861.7	1	1440.6	1861.7	0	0	0	0	0	0
10	Ntombela ,N (Nrorozo)	1	1	425	1	1	425	0	0	0	0	0	0
10	Ntombela ,N (Nrorozo)	1	1200	1625	1	1200	1625	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Sibidla, O (Onesisa)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms