Chess South Africa Ratings Database

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Personal

Grobbelaar, C (Chanelle)

Chess SA id

2070104260

FIDE id

Date of birth

2007-05-22 (U20)

Gender

Female

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-12-17

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1231.6	1213.4	1175	1140
Raw rating	1151.9	1165.1	1123.4	1140
Weighted rating	1231.6	1213.4	1175	1140
Weighted performance	1078	1056.1	700	0
Floor	756.8	746	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	177.6	174.3	184.9	180.6
Highest rating	1256.8 2025-03-01	1246 2025-03-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1256.8 2025-03-01	1246 2025-03-01	1200 2018-02-01	1200 2019-12-01
Highest weighted rating	1235 2025-08-01	1246 2024-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1243.1 2024-03-01	1200 2018-02-01	1200 2018-02-01	1200 2019-12-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-6.5	-3.8	-4.2	0
New rating	1225.1	1209.6	1170.8	1140
Analysis
Rating	1231.6	1213.4	1175	1140
Raw rating	1151.9	1165.1	1123.4	1140
Weighted rating	1231.6	1213.4	1175
Weighted performance	1078	1056.1	700
K-factor	36	36	36	36
Floor	756.8	746	700	700
Max/Min rating change allowed	177.6	174.3	184.9	180.6
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	1151.9	1165.1	1123.4	1140
New weighted rating	1225.1	1209.6	1170.8	1140
New weighted performance	1070.1	1048.4	692.5	0
Temp new rating	1225.1	1209.6	1170.8	1140
Temp new rating +/-	-6.5	-3.8	-4.2	0
Final new rating +/-	-6.5	-3.8	-4.2	0
New rating	1225.1	1209.6	1170.8	1140
New K-factor	36	36	36	36
New floor	756.8	746	700	700

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	22	22	0	0
	23	17	6	0
	20	16	4	0
	30	25	5	0
	0	0	0	0
History	138	87	42	9

Games since
	Main 45	Standard 39		Rapid 6		Blitz 0
Gender	Female
Age group	U20
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	3828		1265		173
Female	865		343		53
U20	262		97		19
U20 Female	58		17		4
Standard
	RSA		Province		Region
Overall	3892		1107		152
Female	901		334		54
U20	272		96		20
U20 Female	65		20		5
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U20	-1		-1		-1
U20 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U20	-1		-1		-1
U20 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	22	10.5	47.73	-19.3	1207.1	1187.8
Standard	22	10.5	47.73	-19.3	1207.1	1187.8
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	138	65.5	47.46	-21.6	1212.3	1190.8
Standard	87	41	47.13	-24.4	1216.8	1192.4
Rapid	42	20.5	48.81	-10.1	1192.2	1182.1
Blitz	9	4	44.44	-47.2	1262.3	1215.1

Date	Main	Standard	Rapid	Blitz
2026-01-01	1151.9	1165.1	1123.4	1140
2025-11-30	1239.6	1221.9	1179.6	1140
2025-11-01	1239.6	1221.9	1179.6	1140
2025-09-30	1239.6	1221.9	1179.6	1140
2025-09-01	1239.6	1221.9	1179.6	1140
2025-08-01	1239.6	1221.9	1179.6	1140
2025-07-01	1239.6	1221.9	1179.6	1140
2025-06-01	1239.6	1221.9	1179.6	1140
2025-05-01	1239.6	1221.9	1179.6	1140
2025-04-01	1230.3	1208.3	1179.6	1140
2025-03-01	1256.8	1246	1179.6	1140
2025-02-01	1221.3	1199.8	1179.6	1140
2025-01-01	1238.1	1208.5	1179.6	1140
2024-12-01	1238.1	1208.5	1179.6	1140
2024-11-01	1238.1	1208.5	1179.6	1140
2024-10-01	1238.1	1208.5	1179.6	1140
2024-09-01	1238.1	1208.5	1179.6	1140
2024-11-01	1238.1	1208.5	1179.6	1140
2024-07-01	1238.1	1208.5	1179.6	1140
2024-06-01	1238.1	1208.5	1179.6	1140
2024-05-01	1238.1	1208.5	1179.6	1140
2024-04-01	1238.1	1208.5	1179.6	1140
2024-03-01	1236	1214.3	1179.6	1140
2024-02-01	1208	1214.3	1144.8	1140

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 Mzansi Inter Provincial Team Championships (U20 Girls)	2025-12-15	2025-12-17	Standard	Nelson Mandela Bay (ENM)	6	4	0	Yes	Analysis
2	WCSC Kings & Queens 2025 (Queens)	2025-11-29	2025-11-29	Rapid	Cape Winelands (WCW)	6	4	0.5	Yes	Analysis
3	Western Cape Schools Individual Championship 2025 (U19 Girls)	2025-04-26	2025-04-27	Standard	West Coast (WCU)	6	6	3.5	Yes	Analysis
4	Cape Winelands Schools Prestige 2025 (U19 Girls)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis
5	Cape Winelands Schools - Trials 1 2025 (U19 Girls)	2025-02-08	2025-02-08	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
6	Marie Delport Memorial 2025 (Ladies)	2025-01-25	2025-01-26	Standard	Cape Winelands (WCW)	6	6	1	Yes	Analysis
7	Western Cape HS Individuals Championship 2024 (U18 Girls)	2024-03-21	2024-03-22	Standard	Overberg (WOS)	6	6	2	Yes	Analysis
8	Cape Winelands Schools - Prestige 2024 (U18 Girls)	2024-03-02	2024-03-02	Standard	Cape Winelands (WCW)	5	5	3.5	Yes	Analysis
9	Cape Winelands Schools - HS Trials 1 2024 (U18 Girls)	2024-02-17	2024-02-17	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
10	Cape Winelands - Marie Delport Memorial 2024 (Ladies)	2024-01-27	2024-01-28	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis
11	CW Top Schools 2023 (U15+U18 Girls)	2023-08-26	2023-08-26	Rapid	Cape Winelands (WCW)	5	4	1	Yes	Analysis
12	Western Cape HS Individuals 2023 (U17 Girls)	2023-04-01	2023-04-02	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
13	Cape Winelands Schools Prestige 2023 (U17 Girls)	2023-03-11	2023-03-11	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis
14	Cape Winelands Schools Chess - Trials 1 2023 (U17 Girls)	2023-02-25	2023-02-25	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
15	Cape Winelands Schools Top Schools 2022 (U15 Mix)	2022-08-27	2022-08-27	Standard	Cape Winelands (WCW)	5	3	1	Yes	Analysis
16	Western Cape Schools Chess 2022 (U15 Girls)	2022-05-07	2022-05-08	Standard	Eden (WEG)	6	6	3.5	Yes	Analysis
17	Ceres Open 2022 (B)	2022-04-23	2022-04-23	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis
18	Cape Winelands Schools 2022 (U15 Girls)	2022-03-05	2022-03-05	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
19	Central Winelands Schools Individual Trials 2022 (U15 Girls)	2022-02-19	2022-02-19	Rapid	Cape Winelands (WCW)	5	5	2.5	Yes	Analysis
20	Cape Winelands Open 2022 (Intermediate)	2022-02-12	2022-02-13	Standard	Cape Winelands (WCW)	6	5	1	Yes	Analysis
21	Drakenstein Pioneers Inaugural 2020 (C)	2020-03-14	2020-03-14	Standard	Cape Winelands (WCW)	5	4	2	Yes	Analysis
22	Paul Roos Blitz 2020	2020-02-22	2020-02-22	Blitz	Cape Winelands (WCW)	9	9	4	Yes	Analysis
23	2020 Welgemoed Chess Challenge (U14)	2020-02-29	2020-02-29	Rapid	Cape Town (WCT)	5	5	2	Yes	Analysis
24	Cape Winelands Schools Trials 1 2020 (U13 Girls)	2020-02-08	2020-02-08	Rapid	Cape Winelands (WCW)	6	6	4.5	Yes	Analysis
25	Back to School Rapid 2020 (Girls)	2020-02-01	2020-02-01	Rapid	West Coast (WCU)	5	4	2	Yes	Analysis
26	2019 Western Province League (E)	2019-07-27	2019-08-10	Standard	Cape Town (WCT)	9	3	0.5	Yes	Analysis
27	Cape Winelands Schools - Top Schools 2019 (U13 Mix)	2019-07-27	2019-07-27	Rapid	Cape Winelands (WCW)	5	5	2.5	Yes	Analysis
28	Drakenstein Dragons Rapid 2019 (U13)	2019-06-15	2019-06-15	Rapid	Cape Winelands (WCW)	7	7	2	Yes	Analysis

#	Games	Start				End
1	6	Tournament Cape Winelands Schools - HS Trials 1 2024				Tournament Cape Winelands Schools - Prestige 2024
		date 2024-02-17	rnd 4	type Rapid	result 1	date 2024-03-02	rnd 3	type Standard	result 1
		Opponent Keyster, F (Farren)				Opponent Oosthuizen, H (Haylee)
2	5	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools - Trials 1 2025
		date 2025-02-08	rnd 1	type Standard	result 1	date 2025-02-08	rnd 5	type Standard	result 1
		Opponent Adams, L (Leigh)				Opponent Baartman, N (Nicole)
3	4	Tournament Back to School Rapid 2020				Tournament Cape Winelands Schools Trials 1 2020
		date 2020-02-01	rnd 4	type Rapid	result 1	date 2020-02-08	rnd 2	type Rapid	result 1
		Opponent De Lange, M (Marizaan)				Opponent Vermeulen, S (Suyana)

#	Games	Start				End
1	5	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools - Trials 1 2025
		date 2025-02-08	rnd 1	type Standard	result 1	date 2025-02-08	rnd 5	type Standard	result 1
		Opponent Adams, L (Leigh)				Opponent Baartman, N (Nicole)
2	4	Tournament Cape Winelands - Marie Delport Memorial 2024				Tournament Cape Winelands Schools - Prestige 2024
		date 2024-01-28	rnd 6	type Standard	result 1	date 2024-03-02	rnd 3	type Standard	result 1
		Opponent Van Zyl, C (Carien)				Opponent Oosthuizen, H (Haylee)
3	3	Tournament Western Cape Schools Individual Championship 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-04-26	rnd 4	type Standard	result 1	date 2025-04-27	rnd 6	type Standard	result 0.5
		Opponent Jacobs, M (Michelle)				Opponent Brown, H (Hannah)

#	Games	Start				End
1	4	Tournament Cape Winelands Schools Trials 1 2020				Tournament 2020 Welgemoed Chess Challenge
		date 2020-02-08	rnd 4	type Rapid	result 1	date 2020-02-29	rnd 1	type Rapid	result 1
		Opponent Grobler, M (Mari)				Opponent Xhanti, E (Esihle)
2	4	Tournament Back to School Rapid 2020				Tournament Cape Winelands Schools Trials 1 2020
		date 2020-02-01	rnd 4	type Rapid	result 1	date 2020-02-08	rnd 2	type Rapid	result 1
		Opponent De Lange, M (Marizaan)				Opponent Vermeulen, S (Suyana)
3	3	Tournament Cape Winelands Schools - HS Trials 1 2024				Tournament Cape Winelands Schools - HS Trials 1 2024
		date 2024-02-17	rnd 4	type Rapid	result 1	date 2024-02-17	rnd 6	type Rapid	result 1
		Opponent Keyster, F (Farren)				Opponent Hall, K (Kirsten)

#	Games	Start				End
1	2	Tournament Paul Roos Blitz 2020				Tournament Paul Roos Blitz 2020
		date 2020-02-22	rnd 4	type Blitz	result 1	date 2020-02-22	rnd 5	type Blitz	result 1
		Opponent Smit, T (Tiaan)				Opponent Appollis, M (Martino)
2	1	Tournament Paul Roos Blitz 2020				Tournament Paul Roos Blitz 2020
		date 2020-02-22	rnd 8	type Blitz	result 1	date 2020-02-22	rnd 8	type Blitz	result 1
		Opponent Davids, B (Bronwyne)				Opponent Davids, B (Bronwyne)
3	1	Tournament Paul Roos Blitz 2020				Tournament Paul Roos Blitz 2020
		date 2020-02-22	rnd 2	type Blitz	result 1	date 2020-02-22	rnd 2	type Blitz	result 1
		Opponent Achiano, K (Kofi)				Opponent Achiano, K (Kofi)

#	Games	Start				End
1	4	Tournament Cape Winelands Schools - HS Trials 1 2024				Tournament Cape Winelands Schools - Prestige 2024
		date 2024-02-17	rnd 4	type Rapid	result 1	date 2024-03-02	rnd 1	type Standard	result 1
		Opponent Keyster, F (Farren)				Opponent Swarts, J (Junay)
2	4	Tournament Back to School Rapid 2020				Tournament Cape Winelands Schools Trials 1 2020
		date 2020-02-01	rnd 4	type Rapid	result 1	date 2020-02-08	rnd 2	type Rapid	result 1
		Opponent De Lange, M (Marizaan)				Opponent Vermeulen, S (Suyana)
3	3	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Prestige 2023
		date 2023-02-25	rnd 4	type Standard	result 1	date 2023-03-11	rnd 1	type Standard	result 1
		Opponent Jansen, C (Carla)				Opponent Alkaster, M (Mianca)

#	Games	Start				End
1	3	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Prestige 2023
		date 2023-02-25	rnd 4	type Standard	result 1	date 2023-03-11	rnd 1	type Standard	result 1
		Opponent Jansen, C (Carla)				Opponent Alkaster, M (Mianca)
2	3	Tournament Cape Winelands Schools 2022				Tournament Cape Winelands Schools 2022
		date 2022-03-05	rnd 1	type Standard	result 1	date 2022-03-05	rnd 3	type Standard	result 1
		Opponent Brink, M (Meja)				Opponent Snyman, J (Junoel)
3	2	Tournament Western Cape Schools Individual Championship 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-04-26	rnd 4	type Standard	result 1	date 2025-04-27	rnd 5	type Standard	result 1
		Opponent Jacobs, M (Michelle)				Opponent Diergaardt, L (Lee-Heine)

#	Games	Start				End
1	4	Tournament Back to School Rapid 2020				Tournament Cape Winelands Schools Trials 1 2020
		date 2020-02-01	rnd 4	type Rapid	result 1	date 2020-02-08	rnd 2	type Rapid	result 1
		Opponent De Lange, M (Marizaan)				Opponent Vermeulen, S (Suyana)
2	3	Tournament Cape Winelands Schools - HS Trials 1 2024				Tournament Cape Winelands Schools - HS Trials 1 2024
		date 2024-02-17	rnd 4	type Rapid	result 1	date 2024-02-17	rnd 6	type Rapid	result 1
		Opponent Keyster, F (Farren)				Opponent Hall, K (Kirsten)
3	2	Tournament Cape Winelands Schools Trials 1 2020				Tournament Cape Winelands Schools Trials 1 2020
		date 2020-02-08	rnd 4	type Rapid	result 1	date 2020-02-08	rnd 5	type Rapid	result 1
		Opponent Grobler, M (Mari)				Opponent Kruger, C (Carmen)

#	Games	Start				End
1	2	Tournament Paul Roos Blitz 2020				Tournament Paul Roos Blitz 2020
		date 2020-02-22	rnd 4	type Blitz	result 1	date 2020-02-22	rnd 5	type Blitz	result 1
		Opponent Smit, T (Tiaan)				Opponent Appollis, M (Martino)
2	1	Tournament Paul Roos Blitz 2020				Tournament Paul Roos Blitz 2020
		date 2020-02-22	rnd 8	type Blitz	result 1	date 2020-02-22	rnd 8	type Blitz	result 1
		Opponent Davids, B (Bronwyne)				Opponent Davids, B (Bronwyne)
3	1	Tournament Paul Roos Blitz 2020				Tournament Paul Roos Blitz 2020
		date 2020-02-22	rnd 2	type Blitz	result 1	date 2020-02-22	rnd 2	type Blitz	result 1
		Opponent Achiano, K (Kofi)				Opponent Achiano, K (Kofi)

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	Keyster ,W (Wayleetho)	4	2.5	106.2	4	2.5	106.2	0	0	0	0	0	0
1	Keyster ,W (Wayleetho)	4	1160.2	1266.4	4	1165	1266.4	0	0	0	0	0	0
2	Alkaster ,M (Mianca)	4	2.5	106.2	4	2.5	106.2	0	0	0	0	0	0
2	Alkaster ,M (Mianca)	4	1170.8	1277.1	4	1165.5	1277.1	0	0	0	0	0	0
3	Scheepers ,M (Mieke)	4	0.5	-318.8	3	0.5	-283.3	1	0	-425	0	0	0
3	Scheepers ,M (Mieke)	4	1295.3	976.5	3	1225.2	1011.9	1	1167.8	870.3	0	0	0
4	Springveldt ,D (Deileeya)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
4	Springveldt ,D (Deileeya)	3	1137.9	996.2	3	1130.8	996.2	0	0	0	0	0	0
5	Claassen ,C (Carli)	3	0	-425	3	0	-425	0	0	0	0	0	0
5	Claassen ,C (Carli)	3	1423.3	998.3	3	1403.6	998.3	0	0	0	0	0	0
6	Hall ,K (Kirsten)	3	2	141.7	0	0	0	3	2	141.7	0	0	0
6	Hall ,K (Kirsten)	3	1185.6	1327.3	0	0	0	3	1179.1	1327.3	0	0	0
7	Swarts ,J (Junay)	2	2	425	2	2	425	0	0	0	0	0	0
7	Swarts ,J (Junay)	2	1089.1	1514.1	2	1089.1	1514.1	0	0	0	0	0	0
8	Oosthuizen ,H (Haylee)	2	2	425	2	2	425	0	0	0	0	0	0
8	Oosthuizen ,H (Haylee)	2	1235.9	1660.9	2	1253.6	1660.9	0	0	0	0	0	0
9	Snyman ,J (Junoel)	2	2	425	2	2	425	0	0	0	0	0	0
9	Snyman ,J (Junoel)	2	1156	1581	2	1176.4	1581	0	0	0	0	0	0
10	Johnson ,L (Lakeisha)	2	0	-425	1	0	-425	1	0	-425	0	0	0
10	Johnson ,L (Lakeisha)	2	1554.3	1129.3	1	1543.7	1129.3	1	1385.9	1129.3	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Grobbelaar, C (Chanelle)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms