Chess South Africa Ratings Database

PLAYER PAGE

Personal

Joubert, S (Sumari)

Chess SA id

2160154655

FIDE id

Date of birth

2016-02-01 (U12)

Gender

Female

Region

Overberg (WOS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-07

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1137.2	1160.7	1120.9	1200
Raw rating	1137.2	1160.7	1120.9	1200
Weighted rating	1129.8	1152	1119.7	1200
Weighted performance	825.5	0	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	181.3	175.4	185.6	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2019-12-01	1200 2019-12-01	1200 2019-12-01	1200 2024-02-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2019-12-01	1200 2019-12-01	1200 2019-12-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1137.2	1160.7	1120.9	1200
Analysis
Rating	1137.2	1160.7	1120.9	1200
Raw rating	1137.2	1160.7	1120.9	1200
Weighted rating	1129.8	1152	1119.7
Weighted performance	825.5	0	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	181.3	175.4	185.6	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	1137.2	1160.7	1120.9	1200
New weighted rating	1130.4	1152.6	1119.8	1200
New weighted performance	818.5	0	0	0
Temp new rating	1137.2	1160.7	1120.9	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1137.2	1160.7	1120.9	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	2	2	0
	19	9	10
	16	10	6
	0	0	0
	0	0	0
History	37	21	16

Games since
	Main 21	Standard 11		Rapid 10		Blitz 0
Gender	Female
Age group	U10
Region	Overberg (WOS)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U10	-1		-1		-1
U10 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U10	-1		-1		-1
U10 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U10	-1		-1		-1
U10 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U10	-1		-1		-1
U10 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	2	1	50	0	1231.5	1231.5
Standard	2	1	50	0	1231.5	1231.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	37	13	35.14	-126.4	1201.3	1074.9
Standard	21	8.5	40.48	-81	1191.2	1110.2
Rapid	16	4.5	28.12	-185.9	1214.6	1028.7
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1137.2	1160.7	1120.9	1200
2025-11-30	1137.2	1160.7	1120.9	1200
2025-11-01	1137.2	1160.7	1120.9	1200
2025-09-30	1137.2	1160.7	1120.9	1200
2025-09-01	1130.4	1153.5	1120.9	1200
2025-08-01	1130.4	1153.5	1120.9	1200
2025-07-01	1130.4	1153.5	1120.9	1200
2025-06-01	1130.4	1153.5	1120.9	1200
2025-05-01	1130.4	1153.5	1120.9	1200
2025-04-01	1130.4	1153.5	1120.9	1200
2025-03-01	1130.4	1153.5	1120.9	1200
2025-02-01	1130.2	1153.1	1120.9	1200
2025-01-01	1116.1	1132.7	1115.1	1200
2024-12-01	1116.1	1132.7	1115.1	1200
2024-11-01	1116.1	1132.7	1115.1	1200
2024-10-01	1116.1	1132.7	1115.1	1200
2024-09-01	1116.1	1132.7	1115.1	1200
2024-11-01	1116.1	1132.7	1115.1	1200
2024-07-01	1116.1	1132.7	1115.1	1200
2024-06-01	1116.1	1132.7	1115.1	1200
2024-05-01	1145.7	1184.5	1115.1	1200
2024-04-01	1152.6	1184.5	1125.5	1200
2024-03-01	1150.7	1181.6	1132	1200
2024-02-01	1150.7	1181.6	1132	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 - Top Schools 2025 (U11 Girls)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	2	1	Yes	Analysis
2	Western Cape PS Individuals Championship 2024 (U9 Girls)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	5	1	Yes	Analysis
3	Hermanus Chess Club Open 2024 (Development)	2024-04-20	2024-04-20	Rapid	Overberg (WOS)	7	6	2	Yes	Analysis
4	Overberg Schools - PS Closed 2024 (U9 Girls)	2024-03-16	2024-03-16	Standard	Overberg (WOS)	5	4	2	Yes	Analysis
5	Overberg Schools - PS Trials Region 3 2024 (U9 Girls)	2024-03-02	2024-03-02	Rapid	Overberg (WOS)	5	4	1.5	Yes	Analysis
6	Western Cape Top Schools 2023 (U7 Mixed)	2023-09-02	2023-09-03	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
7	Overberg Top Schools 2023 (U7+U9)	2023-08-05	2023-08-05	Standard	Overberg (WOS)	5	5	1.5	Yes	Analysis
8	Hermanus Rapid 2023 (C)	2023-04-22	2023-04-22	Rapid	Overberg (WOS)	6	6	1	Yes	Analysis

#	Games	Start				End
1	2	Tournament Western Cape PS Individuals Championship 2024				Tournament Western Cape Schools - Top Schools 2025
		date 2024-05-05	rnd 6	type Standard	result 1	date 2025-09-06	rnd 3	type Standard	result 1
		Opponent Lotriet, N (Natasha)				Opponent Wang, M (Mirinda)
2	2	Tournament Overberg Schools - PS Closed 2024				Tournament Overberg Schools - PS Closed 2024
		date 2024-03-16	rnd 3	type Standard	result 1	date 2024-03-16	rnd 4	type Standard	result 1
		Opponent Daniels, S (Skye)				Opponent Stuurman, C (Caithline)
3	2	Tournament Western Cape Top Schools 2023				Tournament Western Cape Top Schools 2023
		date 2023-09-03	rnd 4	type Standard	result 1	date 2023-09-03	rnd 5	type Standard	result 1
		Opponent Da Camara, I (Izabella)				Opponent Kotze, Z (Ziandre)

#	Games	Start				End
1	2	Tournament Western Cape PS Individuals Championship 2024				Tournament Western Cape Schools - Top Schools 2025
		date 2024-05-05	rnd 6	type Standard	result 1	date 2025-09-06	rnd 3	type Standard	result 1
		Opponent Lotriet, N (Natasha)				Opponent Wang, M (Mirinda)
2	2	Tournament Overberg Schools - PS Closed 2024				Tournament Overberg Schools - PS Closed 2024
		date 2024-03-16	rnd 3	type Standard	result 1	date 2024-03-16	rnd 4	type Standard	result 1
		Opponent Daniels, S (Skye)				Opponent Stuurman, C (Caithline)
3	2	Tournament Western Cape Top Schools 2023				Tournament Western Cape Top Schools 2023
		date 2023-09-03	rnd 4	type Standard	result 1	date 2023-09-03	rnd 5	type Standard	result 1
		Opponent Da Camara, I (Izabella)				Opponent Kotze, Z (Ziandre)

#	Games	Start				End
1	1	Tournament Hermanus Chess Club Open 2024				Tournament Hermanus Chess Club Open 2024
		date 2024-04-20	rnd 4	type Rapid	result 1	date 2024-04-20	rnd 4	type Rapid	result 1
		Opponent Qogi, D (Dean)				Opponent Qogi, D (Dean)
2	1	Tournament Hermanus Chess Club Open 2024				Tournament Hermanus Chess Club Open 2024
		date 2024-04-20	rnd 2	type Rapid	result 1	date 2024-04-20	rnd 2	type Rapid	result 1
		Opponent Poole, C (Cayden)				Opponent Poole, C (Cayden)
3	1	Tournament Overberg Schools - PS Trials Region 3 2024				Tournament Overberg Schools - PS Trials Region 3 2024
		date 2024-03-02	rnd 5	type Rapid	result 0.5	date 2024-03-02	rnd 5	type Rapid	result 0.5
		Opponent Marais, J (Janli)				Opponent Marais, J (Janli)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Western Cape PS Individuals Championship 2024				Tournament Western Cape Schools - Top Schools 2025
		date 2024-05-05	rnd 6	type Standard	result 1	date 2025-09-06	rnd 3	type Standard	result 1
		Opponent Lotriet, N (Natasha)				Opponent Wang, M (Mirinda)
2	2	Tournament Overberg Schools - PS Closed 2024				Tournament Overberg Schools - PS Closed 2024
		date 2024-03-16	rnd 3	type Standard	result 1	date 2024-03-16	rnd 4	type Standard	result 1
		Opponent Daniels, S (Skye)				Opponent Stuurman, C (Caithline)
3	2	Tournament Western Cape Top Schools 2023				Tournament Western Cape Top Schools 2023
		date 2023-09-03	rnd 4	type Standard	result 1	date 2023-09-03	rnd 5	type Standard	result 1
		Opponent Da Camara, I (Izabella)				Opponent Kotze, Z (Ziandre)

#	Games	Start				End
1	2	Tournament Western Cape PS Individuals Championship 2024				Tournament Western Cape Schools - Top Schools 2025
		date 2024-05-05	rnd 6	type Standard	result 1	date 2025-09-06	rnd 3	type Standard	result 1
		Opponent Lotriet, N (Natasha)				Opponent Wang, M (Mirinda)
2	2	Tournament Overberg Schools - PS Closed 2024				Tournament Overberg Schools - PS Closed 2024
		date 2024-03-16	rnd 3	type Standard	result 1	date 2024-03-16	rnd 4	type Standard	result 1
		Opponent Daniels, S (Skye)				Opponent Stuurman, C (Caithline)
3	2	Tournament Western Cape Top Schools 2023				Tournament Western Cape Top Schools 2023
		date 2023-09-03	rnd 4	type Standard	result 1	date 2023-09-03	rnd 5	type Standard	result 1
		Opponent Da Camara, I (Izabella)				Opponent Kotze, Z (Ziandre)

#	Games	Start				End
1	1	Tournament Hermanus Chess Club Open 2024				Tournament Hermanus Chess Club Open 2024
		date 2024-04-20	rnd 4	type Rapid	result 1	date 2024-04-20	rnd 4	type Rapid	result 1
		Opponent Qogi, D (Dean)				Opponent Qogi, D (Dean)
2	1	Tournament Hermanus Chess Club Open 2024				Tournament Hermanus Chess Club Open 2024
		date 2024-04-20	rnd 2	type Rapid	result 1	date 2024-04-20	rnd 2	type Rapid	result 1
		Opponent Poole, C (Cayden)				Opponent Poole, C (Cayden)
3	1	Tournament Overberg Schools - PS Trials Region 3 2024				Tournament Overberg Schools - PS Trials Region 3 2024
		date 2024-03-02	rnd 3	type Rapid	result 1	date 2024-03-02	rnd 3	type Rapid	result 1
		Opponent Pieper, N (Nina)				Opponent Pieper, N (Nina)

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	Harikisun ,A (Acira)	2	0	-425	1	0	-425	1	0	-425	0	0	0
1	Harikisun ,A (Acira)	2	1205.6	780.6	1	1193.6	780.6	1	1200	780.6	0	0	0
2	Ngalo ,E (Entle)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Ngalo ,E (Entle)	1	1143.3	718.3	1	1200	718.3	0	0	0	0	0	0
3	Stuurman ,C (Caithline)	1	1	425	1	1	425	0	0	0	0	0	0
3	Stuurman ,C (Caithline)	1	1174.1	1599.1	1	1200	1599.1	0	0	0	0	0	0
4	Lotriet ,N (Natasha)	1	1	425	1	1	425	0	0	0	0	0	0
4	Lotriet ,N (Natasha)	1	1215.6	1640.6	1	1220	1640.6	0	0	0	0	0	0
5	Faasen ,M (Madeleine)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
5	Faasen ,M (Madeleine)	1	1200	1200	1	1200	1200	0	0	0	0	0	0
6	Vukubi ,I (Isiphile)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Vukubi ,I (Isiphile)	1	1263.1	838.1	1	1277.9	838.1	0	0	0	0	0	0
7	Wang ,M (Mirinda)	1	1	425	1	1	425	0	0	0	0	0	0
7	Wang ,M (Mirinda)	1	1199.9	1624.9	1	1199.9	1624.9	0	0	0	0	0	0
8	Willemse ,A (Avah)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Willemse ,A (Avah)	1	1266.6	841.6	1	1163.2	841.6	0	0	0	0	0	0
9	Koopman ,P (Percian)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Koopman ,P (Percian)	1	1203.6	778.6	1	1159.2	778.6	0	0	0	0	0	0
10	Fredericks ,B (Bethany)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Fredericks ,B (Bethany)	1	1163.5	738.5	1	1152	738.5	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Joubert, S (Sumari)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms