Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jacobs, S (Sumayah)

Chess SA id

2090096154

FIDE id

Date of birth

2009-08-20 (U18)

Gender

Female

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-03-04

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1290.8	1287.3	1248.4	1200
Raw rating	1290.8	1287.3	1248.4	1200
Weighted rating	1290.8	1287.3	1248.4	1200
Weighted performance	868.8	780.9	581.8	0
Floor	790.8	787.3	748.4	700
K-factor	36	36	36	36
Min/Max rating change allowed	145.7	146.4	154.8	165.8
Highest rating	1303.7 2023-03-01	1287.3 2024-03-01	1248.4 2024-03-01	1200 2018-10-01
Highest raw rating	1290.8 2024-03-01	1287.3 2024-03-01	1248.4 2024-03-01	1200 2024-03-01
Highest weighted rating	1290.8 2025-02-01	1287.3 2025-02-01	1248.4 2024-10-01	1200 2018-10-01
Highest weighted performance	1303.7 2023-03-01	1212.7 2023-03-01	1200 2018-02-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1290.8	1287.3	1248.4	1200
Analysis
Rating	1290.8	1287.3	1248.4	1200
Raw rating	1290.8	1287.3	1248.4	1200
Weighted rating	1290.8	1287.3	1248.4
Weighted performance	868.8	780.9	581.8
K-factor	36	36	36	36
Floor	790.8	787.3	748.4	700
Max/Min rating change allowed	145.7	146.4	154.8	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	1290.8	1287.3	1248.4	1200
New weighted rating	1290.8	1287.3	1248.4	1200
New weighted performance	867.4	779.5	580.4	0
Temp new rating	1290.8	1287.3	1248.4	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1290.8	1287.3	1248.4	1200
New K-factor	36	36	36	36
New floor	790.8	787.3	748.4	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	11	11	0
	16	6	10
	0	0	0
History	85	52	33

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Female
Age group	U18
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 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	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	76	41.5	54.61	39.1	1178.2	1217.4
Standard	48	28	58.33	70.8	1158.2	1229
Rapid	28	13.5	48.21	-15.2	1212.5	1197.3
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1290.8	1287.3	1248.4	1200
2025-09-01	1290.8	1287.3	1248.4	1200
2025-08-01	1290.8	1287.3	1248.4	1200
2025-07-01	1290.8	1287.3	1248.4	1200
2025-06-01	1290.8	1287.3	1248.4	1200
2025-05-01	1290.8	1287.3	1248.4	1200
2025-04-01	1290.8	1287.3	1248.4	1200
2025-03-01	1290.8	1287.3	1248.4	1200
2025-02-01	1290.8	1287.3	1248.4	1200
2025-01-01	1290.8	1287.3	1248.4	1200
2024-12-01	1290.8	1287.3	1248.4	1200
2024-11-01	1290.8	1287.3	1248.4	1200
2024-10-01	1290.8	1287.3	1248.4	1200
2024-09-01	1290.8	1287.3	1248.4	1200
2024-08-01	1290.8	1287.3	1248.4	1200
2024-07-01	1290.8	1287.3	1248.4	1200
2024-06-01	1290.8	1287.3	1248.4	1200
2024-08-01	1290.8	1287.3	1248.4	1200
2024-04-01	1290.8	1287.3	1248.4	1200
2024-03-01	1290.8	1287.3	1248.4	1200
2024-02-01	1290.8	1287.3	1248.4	1200
2024-01-01	1290.8	1287.3	1248.4	1200
2023-12-01	1290.8	1287.3	1248.4	1200
2023-11-01	1290.8	1287.3	1248.4	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	Cape Town Metro Schools Chess Closed Individuals 2023 (U15 Girls)	2023-02-03	2023-03-04	Standard	Cape Town (WCT)	6	5	4	Yes	Analysis
2	Central District School Trials 2023 (U15 Girls)	2023-02-03	2023-02-04	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
3	Metro Rapid 2022 (U13 Girls)	2022-10-22	2022-10-22	Rapid	Cape Town (WCT)	5	5	3	Yes	Analysis
4	Metro WP Schools Chess Trials 2022 (U13 Girls)	2022-04-22	2022-04-23	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
5	2022 Central District Individual Trials (U13)	2022-03-05	2022-03-05	Rapid	Cape Town (WCT)	5	5	3.5	Yes	Analysis
6	2020 Metro Trials (U11 Girls)	2020-03-13	2020-03-14	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis
7	2020 Central District (U11)	2020-02-07	2020-02-08	Standard	Cape Town (WCT)	6	5	3	Yes	Analysis
8	3rd ACL Chess Festival 2019 (U10)	2019-09-05	2019-09-05	Rapid	Cape Town (WCT)	6	6	3.5	Yes	Analysis
9	Welgemoed Chess Challenge 2019 (U10)	2019-02-23	2019-02-23	Rapid	Cape Town (WCT)	5	5	2.5	Yes	Analysis
10	2019 Central District Schools Trials (U11)	2019-02-01	2019-02-02	Standard	Cape Town (WCT)	6	0	0	No	Analysis
11	Jakes Gerwel Aurecon 2018 (C)	2018-10-13	2018-10-13	Rapid	Cape Town (WCT)	7	7	1	Yes	Analysis
12	Stellenberg Youth Chess Champs 2018 (E)	2018-06-23	2018-06-23	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis
13	Western Cape Schools Individuals 2018 (U9 Girls)	2018-05-19	2018-05-20	Standard	Overberg (WOS)	6	6	3	Yes	Analysis
14	2018 WP Schools Closed Trials (U9 Girls)	2018-03-09	2018-03-10	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis
15	2018 Central District Trials (U9)	2018-02-02	2018-02-03	Standard	Cape Town (WCT)	5	5	2	Yes	Analysis

#	Games	Start				End
1	6	Tournament Central District School Trials 2023				Tournament Cape Town Metro Schools Chess Closed Individuals 2023
		date 2023-02-04	rnd 4	type Standard	result 1	date 2023-03-04	rnd 5	type Standard	result 1
		Opponent Mqadi, O (Olethiwe)				Opponent Matima, L (Lee-Anne)
2	3	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 3	type Rapid	result 1
		Opponent Lodewyk, S (Salih)				Opponent Toefy, Z (Zaeem)
3	3	Tournament 2020 Metro Trials				Tournament 2020 Metro Trials
		date 2020-03-14	rnd 2	type Standard	result 1	date 2020-03-14	rnd 4	type Standard	result 1
		Opponent Mqadi, O (Olethiwe)				Opponent Woolf, J (Jessika)

#	Games	Start				End
1	6	Tournament Central District School Trials 2023				Tournament Cape Town Metro Schools Chess Closed Individuals 2023
		date 2023-02-04	rnd 4	type Standard	result 1	date 2023-03-04	rnd 5	type Standard	result 1
		Opponent Mqadi, O (Olethiwe)				Opponent Matima, L (Lee-Anne)
2	3	Tournament 2020 Metro Trials				Tournament 2020 Metro Trials
		date 2020-03-14	rnd 2	type Standard	result 1	date 2020-03-14	rnd 4	type Standard	result 1
		Opponent Mqadi, O (Olethiwe)				Opponent Woolf, J (Jessika)
3	3	Tournament Stellenberg Youth Chess Champs 2018				Tournament Stellenberg Youth Chess Champs 2018
		date 2018-06-23	rnd 2	type Standard	result 1	date 2018-06-23	rnd 4	type Standard	result 1
		Opponent Joshua, M (Madden)				Opponent Vuso, L (Lithemba)

#	Games	Start				End
1	3	Tournament 2022 Central District Individual Trials				Tournament Metro Rapid 2022
		date 2022-03-05	rnd 5	type Rapid	result 1	date 2022-10-22	rnd 2	type Rapid	result 1
		Opponent Williams, M (Matthew)				Opponent Van Wyk, L (Lara)
2	3	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 3	type Rapid	result 1
		Opponent Lodewyk, S (Salih)				Opponent Toefy, Z (Zaeem)
3	3	Tournament 3rd ACL Chess Festival 2019				Tournament 3rd ACL Chess Festival 2019
		date 2019-09-05	rnd 3	type Rapid	result 1	date 2019-09-05	rnd 5	type Rapid	result 1
		Opponent Smeda, JT (Joshua Trent)				Opponent Mputi, M (Marwah)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament Central District School Trials 2023				Tournament Cape Town Metro Schools Chess Closed Individuals 2023
		date 2023-02-04	rnd 4	type Standard	result 1	date 2023-03-04	rnd 5	type Standard	result 1
		Opponent Mqadi, O (Olethiwe)				Opponent Matima, L (Lee-Anne)
2	3	Tournament 2020 Metro Trials				Tournament 2020 Metro Trials
		date 2020-03-14	rnd 2	type Standard	result 1	date 2020-03-14	rnd 4	type Standard	result 1
		Opponent Mqadi, O (Olethiwe)				Opponent Woolf, J (Jessika)
3	3	Tournament Stellenberg Youth Chess Champs 2018				Tournament Stellenberg Youth Chess Champs 2018
		date 2018-06-23	rnd 2	type Standard	result 1	date 2018-06-23	rnd 4	type Standard	result 1
		Opponent Joshua, M (Madden)				Opponent Vuso, L (Lithemba)

#	Games	Start				End
1	6	Tournament Central District School Trials 2023				Tournament Cape Town Metro Schools Chess Closed Individuals 2023
		date 2023-02-04	rnd 4	type Standard	result 1	date 2023-03-04	rnd 5	type Standard	result 1
		Opponent Mqadi, O (Olethiwe)				Opponent Matima, L (Lee-Anne)
2	3	Tournament 2020 Metro Trials				Tournament 2020 Metro Trials
		date 2020-03-14	rnd 2	type Standard	result 1	date 2020-03-14	rnd 4	type Standard	result 1
		Opponent Mqadi, O (Olethiwe)				Opponent Woolf, J (Jessika)
3	3	Tournament Stellenberg Youth Chess Champs 2018				Tournament Stellenberg Youth Chess Champs 2018
		date 2018-06-23	rnd 2	type Standard	result 1	date 2018-06-23	rnd 4	type Standard	result 1
		Opponent Joshua, M (Madden)				Opponent Vuso, L (Lithemba)

#	Games	Start				End
1	3	Tournament 2022 Central District Individual Trials				Tournament Metro Rapid 2022
		date 2022-03-05	rnd 5	type Rapid	result 1	date 2022-10-22	rnd 2	type Rapid	result 1
		Opponent Williams, M (Matthew)				Opponent Van Wyk, L (Lara)
2	1	Tournament Metro Rapid 2022				Tournament Metro Rapid 2022
		date 2022-10-22	rnd 5	type Rapid	result 1	date 2022-10-22	rnd 5	type Rapid	result 1
		Opponent Dliwani, Y (Yoliswa)				Opponent Dliwani, Y (Yoliswa)
3	1	Tournament 2022 Central District Individual Trials				Tournament 2022 Central District Individual Trials
		date 2022-03-05	rnd 3	type Rapid	result 1	date 2022-03-05	rnd 3	type Rapid	result 1
		Opponent Toefy, Z (Zaeem)				Opponent Toefy, Z (Zaeem)

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	Grove ,E (Emily)	3	1	-141.7	2	1	0	1	0	-425	0	0	0
1	Grove ,E (Emily)	3	1191.5	1049.9	2	1237.1	1191.5	1	1128.8	766.5	0	0	0
2	Mqadi ,O (Olethiwe)	2	2	425	2	2	425	0	0	0	0	0	0
2	Mqadi ,O (Olethiwe)	2	1130.2	1555.2	2	1119.8	1555.2	0	0	0	0	0	0
3	Van Heerden ,H (Hannah Rose)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Van Heerden ,H (Hannah Rose)	2	1182.2	757.2	2	1171.9	757.2	0	0	0	0	0	0
4	Moyo ,T (Tsulufelo)	2	2	425	2	2	425	0	0	0	0	0	0
4	Moyo ,T (Tsulufelo)	2	1191.7	1616.7	2	1191	1616.7	0	0	0	0	0	0
5	Pretorius ,A (Amanda Karen)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Pretorius ,A (Amanda Karen)	2	1195.6	770.6	2	1190.2	770.6	0	0	0	0	0	0
6	Siebert ,E (Emily)	2	2	425	2	2	425	0	0	0	0	0	0
6	Siebert ,E (Emily)	2	1168.6	1593.6	2	1167.2	1593.6	0	0	0	0	0	0
7	Du Buisson ,A (Ava)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Du Buisson ,A (Ava)	1	1204.4	779.4	1	1207.6	779.4	0	0	0	0	0	0
8	Alkema ,D (Daniel)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Alkema ,D (Daniel)	1	1200	775	1	1200	775	0	0	0	0	0	0
9	Matima ,L (Lee-Anne)	1	1	425	1	1	425	0	0	0	0	0	0
9	Matima ,L (Lee-Anne)	1	1431.4	1856.4	1	1401.7	1856.4	0	0	0	0	0	0
10	Mutonhori ,R (Rooney)	1	1	425	1	1	425	0	0	0	0	0	0
10	Mutonhori ,R (Rooney)	1	1200	1625	1	1200	1625	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Jacobs, S (Sumayah)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms