Chess South Africa Ratings Database

PLAYER PAGE

Personal

Sonderup, C (Callum)

Chess SA id

1090105974

FIDE id

Date of birth

2009-04-14 (U18)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2022-05-29

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1297.3	1259.1	1301.2	1200
Raw rating	1297.3	1259.1	1301.2	1200
Weighted rating	1297.3	1259.1	1301.2	1200
Weighted performance	684.3	569.5	0	0
Floor	816.5	776.3	801.2	700
K-factor	36	36	36	36
Min/Max rating change allowed	144.4	152.4	143.6	165.8
Highest rating	1592.6 2018-08-01	1579.8 2018-08-01	1624.6 2022-03-01	1200 2018-10-01
Highest raw rating	1316.5 2022-04-01	1276.3 2020-04-01	1301.2 2024-02-01	1200 2024-02-01
Highest weighted rating	1316.5 2024-05-01	1276.3 2022-03-01	1301.2 2025-02-01	1200 2018-10-01
Highest weighted performance	1592.6 2018-08-01	1579.8 2018-08-01	1624.6 2022-03-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1297.3	1259.1	1301.2	1200
Analysis
Rating	1297.3	1259.1	1301.2	1200
Raw rating	1297.3	1259.1	1301.2	1200
Weighted rating	1297.3	1259.1	1301.2
Weighted performance	684.3	569.5	0
K-factor	36	36	36	36
Floor	816.5	776.3	801.2	700
Max/Min rating change allowed	144.4	152.4	143.6	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	1297.3	1259.1	1301.2	1200
New weighted rating	1297.3	1259.1	1301.2	1200
New weighted performance	683.8	569.1	0	0
Temp new rating	1297.3	1259.1	1301.2	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1297.3	1259.1	1301.2	1200
New K-factor	36	36	36	36
New floor	816.5	776.3	801.2	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	16	11	5
	0	0	0
History	36	31	5

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-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	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
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	36	23	63.89	118.1	1224.8	1342.9
Standard	31	18	58.06	68.5	1230.6	1299.2
Rapid	5	5	100	425	1188.8	1613.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1297.3	1259.1	1301.2	1200
2025-09-01	1297.3	1259.1	1301.2	1200
2025-08-01	1297.3	1259.1	1301.2	1200
2025-07-01	1297.3	1259.1	1301.2	1200
2025-06-01	1297.3	1259.1	1301.2	1200
2025-05-01	1297.3	1259.1	1301.2	1200
2025-04-01	1297.3	1259.1	1301.2	1200
2025-03-01	1297.3	1259.1	1301.2	1200
2025-02-01	1297.3	1259.1	1301.2	1200
2025-01-01	1297.3	1259.1	1301.2	1200
2024-12-01	1297.3	1259.1	1301.2	1200
2024-11-01	1297.3	1259.1	1301.2	1200
2024-10-01	1297.3	1259.1	1301.2	1200
2024-09-01	1297.3	1259.1	1301.2	1200
2024-08-01	1297.3	1259.1	1301.2	1200
2024-07-01	1297.3	1259.1	1301.2	1200
2024-06-01	1297.3	1259.1	1301.2	1200
2024-08-01	1297.3	1259.1	1301.2	1200
2024-04-01	1297.3	1259.1	1301.2	1200
2024-03-01	1297.3	1259.1	1301.2	1200
2024-02-01	1297.3	1259.1	1301.2	1200
2024-01-01	1297.3	1259.1	1301.2	1200
2023-12-01	1297.3	1259.1	1301.2	1200
2023-11-01	1297.3	1259.1	1301.2	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	Western Cape Schools 2022 (U13 Boys)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis
2	Metro WP Schools Chess Trials 2022 (U13 Boys)	2022-04-22	2022-04-23	Standard	Cape Town (WCT)	6	5	2	Yes	Analysis
3	2022 Central District Individual Trials (U13)	2022-03-05	2022-03-05	Rapid	Cape Town (WCT)	5	5	5	Yes	Analysis
4	2020 Metro Trials (U11 Boys)	2020-03-13	2020-03-14	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis
5	2020 Central District (U11)	2020-02-07	2020-02-08	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
6	Western Cape Top Schools 2019 (U11 Mix)	2019-08-31	2019-09-01	Standard	Cape Winelands (WCW)	5	3	1	Yes	Analysis
7	2019 Central District Schools Trials (U11)	2019-02-01	2019-02-02	Standard	Cape Town (WCT)	6	2	1	Yes	Analysis
8	Western Cape Top Schools 2018 (U7+U9 Mix)	2018-08-25	2018-08-26	Standard	Overberg (WOS)	5	4	4	Yes	Analysis

#	Games	Start				End
1	7	Tournament 2020 Metro Trials				Tournament 2022 Central District Individual Trials
		date 2020-03-14	rnd 4	type Standard	result 1	date 2022-03-05	rnd 5	type Rapid	result 1
		Opponent Zibi, A (Amila)				Opponent Mqadi, O (Olethiwe)
2	4	Tournament Western Cape Top Schools 2018				Tournament Western Cape Top Schools 2018
		date 2018-08-25	rnd 1	type Standard	result 1	date 2018-08-26	rnd 5	type Standard	result 1
		Opponent Makateus, H (Hayneville)				Opponent Jika, A (Aphelele)
3	3	Tournament 2020 Central District				Tournament 2020 Central District
		date 2020-02-08	rnd 4	type Standard	result 1	date 2020-02-08	rnd 6	type Standard	result 1
		Opponent Williamson, S (Sarah)				Opponent Horner, S (Samuel)

#	Games	Start				End
1	4	Tournament Western Cape Top Schools 2018				Tournament Western Cape Top Schools 2018
		date 2018-08-25	rnd 1	type Standard	result 1	date 2018-08-26	rnd 5	type Standard	result 1
		Opponent Makateus, H (Hayneville)				Opponent Jika, A (Aphelele)
2	3	Tournament 2020 Central District				Tournament 2020 Central District
		date 2020-02-08	rnd 4	type Standard	result 1	date 2020-02-08	rnd 6	type Standard	result 1
		Opponent Williamson, S (Sarah)				Opponent Horner, S (Samuel)
3	2	Tournament 2020 Metro Trials				Tournament 2020 Metro Trials
		date 2020-03-14	rnd 4	type Standard	result 1	date 2020-03-14	rnd 5	type Standard	result 1
		Opponent Zibi, A (Amila)				Opponent Berry, J (Jordan)

#	Games	Start				End
1	5	Tournament 2022 Central District Individual Trials				Tournament 2022 Central District Individual Trials
		date 2022-03-05	rnd 1	type Rapid	result 1	date 2022-03-05	rnd 5	type Rapid	result 1
		Opponent Arendse, A (Alex)				Opponent Mqadi, O (Olethiwe)

No games found.

#	Games	Start				End

#	Games	Start				End
1	7	Tournament 2020 Metro Trials				Tournament 2022 Central District Individual Trials
		date 2020-03-14	rnd 4	type Standard	result 1	date 2022-03-05	rnd 5	type Rapid	result 1
		Opponent Zibi, A (Amila)				Opponent Mqadi, O (Olethiwe)
2	4	Tournament Western Cape Top Schools 2018				Tournament Western Cape Top Schools 2018
		date 2018-08-25	rnd 1	type Standard	result 1	date 2018-08-26	rnd 5	type Standard	result 1
		Opponent Makateus, H (Hayneville)				Opponent Jika, A (Aphelele)
3	3	Tournament 2020 Central District				Tournament 2020 Central District
		date 2020-02-08	rnd 4	type Standard	result 1	date 2020-02-08	rnd 6	type Standard	result 1
		Opponent Williamson, S (Sarah)				Opponent Horner, S (Samuel)

#	Games	Start				End
1	4	Tournament Western Cape Top Schools 2018				Tournament Western Cape Top Schools 2018
		date 2018-08-25	rnd 1	type Standard	result 1	date 2018-08-26	rnd 5	type Standard	result 1
		Opponent Makateus, H (Hayneville)				Opponent Jika, A (Aphelele)
2	3	Tournament 2020 Central District				Tournament 2020 Central District
		date 2020-02-08	rnd 4	type Standard	result 1	date 2020-02-08	rnd 6	type Standard	result 1
		Opponent Williamson, S (Sarah)				Opponent Horner, S (Samuel)
3	2	Tournament 2020 Metro Trials				Tournament 2020 Metro Trials
		date 2020-03-14	rnd 4	type Standard	result 1	date 2020-03-14	rnd 5	type Standard	result 1
		Opponent Zibi, A (Amila)				Opponent Berry, J (Jordan)

#	Games	Start				End
1	5	Tournament 2022 Central District Individual Trials				Tournament 2022 Central District Individual Trials
		date 2022-03-05	rnd 1	type Rapid	result 1	date 2022-03-05	rnd 5	type Rapid	result 1
		Opponent Arendse, A (Alex)				Opponent Mqadi, O (Olethiwe)

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	Olkers ,D (Declan)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Olkers ,D (Declan)	2	1520.4	1095.4	2	1499	1095.4	0	0	0	0	0	0
2	Horner ,S (Samuel)	2	2	425	2	2	425	0	0	0	0	0	0
2	Horner ,S (Samuel)	2	1156	1581	2	1148.2	1581	0	0	0	0	0	0
3	Mqadi ,O (Olethiwe)	2	1	0	1	0	-425	1	1	425	0	0	0
3	Mqadi ,O (Olethiwe)	2	1088.4	1088.4	1	1084.8	663.4	1	1139.6	1513.4	0	0	0
4	Orwin ,M (Matthew)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Orwin ,M (Matthew)	1	1281.7	856.7	1	1200	856.7	0	0	0	0	0	0
5	Berry ,J (Jordan)	1	1	425	1	1	425	0	0	0	0	0	0
5	Berry ,J (Jordan)	1	1307.8	1732.8	1	1318.2	1732.8	0	0	0	0	0	0
6	Jordaan ,H (Hanru)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Jordaan ,H (Hanru)	1	1241.3	816.3	1	1245.1	816.3	0	0	0	0	0	0
7	Meyer ,M (Matthew)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Meyer ,M (Matthew)	1	1340.4	915.4	1	1234.9	915.4	0	0	0	0	0	0
8	Chisholm ,G (Griffin)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Chisholm ,G (Griffin)	1	1200	775	1	1200	775	0	0	0	0	0	0
9	Degueldre ,J (Jean-Christian)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Degueldre ,J (Jean-Christian)	1	1377.6	952.6	1	1305.7	952.6	0	0	0	0	0	0
10	Stalmeester ,J (Jaiden)	1	1	425	1	1	425	0	0	0	0	0	0
10	Stalmeester ,J (Jaiden)	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

Sonderup, C (Callum)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms