Chess South Africa Ratings Database

PLAYER PAGE

Personal

Sewchurn, S (Sonali)

Chess SA id

1110318391

FIDE id

Date of birth

2011-04-26 (U16)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1218.5	1222.6	1200	1200
Raw rating	1218.5	1222.6	1200	1200
Weighted rating	1206.5	1207.9	1200	1200
Weighted performance	0	0	0	0
Floor	718.5	722.6	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	161.5	160.6	165.8	165.8
Highest rating	1218.5 2025-11-30	1222.6 2025-11-30	1200 2025-04-01	1200 2025-04-01
Highest raw rating	1218.5 2025-11-30	1222.6 2025-11-30	1200 2025-04-01	1200 2025-04-01
Highest weighted rating	1217.5 2025-06-01	1221 2025-06-01	1200 2025-04-01	1200 2025-04-01
Highest weighted performance	0 1900-01-01	0 1900-01-01	0 1900-01-01	0 1900-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1218.5	1222.6	1200	1200
Analysis
Rating	1218.5	1222.6	1200	1200
Raw rating	1218.5	1222.6	1200	1200
Weighted rating	1206.5	1207.9	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	718.5	722.6	700	700
Max/Min rating change allowed	161.5	160.6	165.8	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	1218.5	1222.6	1200	1200
New weighted rating	1207.7	1209.3	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1218.5	1222.6	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1218.5	1222.6	1200	1200
New K-factor	36	36	36	36
New floor	718.5	722.6	700	700

Item	Main	Standard
	0	0
	17	17
	0	0
	0	0
	0	0
	0	0
History	17	17

Games since
	Main 17	Standard 17		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 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	17	8	47.06	-25	1202.5	1177.5
Standard	17	8	47.06	-25	1202.5	1177.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	17	8	47.06	-25	1202.5	1177.5
Standard	17	8	47.06	-25	1202.5	1177.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1218.5	1222.6	1200	1200
2025-11-30	1218.5	1222.6	1200	1200
2025-11-01	1202.3	1202.8	1200	1200
2025-09-30	1202.3	1202.8	1200	1200
2025-09-01	1202.3	1202.8	1200	1200
2025-08-01	1202.3	1202.8	1200	1200
2025-07-01	1203	1203.7	1200	1200
2025-06-01	1217.5	1221	1200	1200
2025-05-01	1217.5	1221	1200	1200
2025-04-01	1217.5	1221	1200	1200
2025-03-01	1200	1200	1200	1200
2025-02-01	1200	1200	1200	1200
2025-01-01	1200	1200	1200	1200
2024-12-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-10-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-06-01	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

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	JCC St Davids Marist Schools League 2025 (B)	2025-09-08	2025-10-27	Standard	Johannesburg Metro (GJM)	6	3	2	Yes	Analysis
2	JMC - Trinity Randpark Ridge 2025 (D)	2025-07-26	2025-07-26	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
3	JCC Steyn City High Schools League 2025 (B)	2025-05-07	2025-06-09	Standard	Johannesburg Metro (GJM)	6	4	1	Yes	Analysis
4	JCC - Dainfern Chess League 2025 (B)	2025-02-03	2025-03-17	Standard	Johannesburg Metro (GJM)	6	5	3	Yes	Analysis

#	Games	Start				End
1	3	Tournament JCC - Dainfern Chess League 2025				Tournament JCC - Dainfern Chess League 2025
		date 2025-02-17	rnd 3	type Standard	result 1	date 2025-03-10	rnd 5	type Standard	result 1
		Opponent Mabanga, N (Nkanyiso)				Opponent Ruvunangiza, Y (Yvan)
2	1	Tournament JMC - Trinity Randpark Ridge 2025				Tournament JMC - Trinity Randpark Ridge 2025
		date 2025-07-26	rnd 5	type Standard	result 1	date 2025-07-26	rnd 5	type Standard	result 1
		Opponent Matlou, L (Lukie Junior)				Opponent Matlou, L (Lukie Junior)
3	1	Tournament JMC - Trinity Randpark Ridge 2025				Tournament JMC - Trinity Randpark Ridge 2025
		date 2025-07-26	rnd 3	type Standard	result 1	date 2025-07-26	rnd 3	type Standard	result 1
		Opponent Chikwava, R (Ronald)				Opponent Chikwava, R (Ronald)

#	Games	Start				End
1	3	Tournament JCC - Dainfern Chess League 2025				Tournament JCC - Dainfern Chess League 2025
		date 2025-02-17	rnd 3	type Standard	result 1	date 2025-03-10	rnd 5	type Standard	result 1
		Opponent Mabanga, N (Nkanyiso)				Opponent Ruvunangiza, Y (Yvan)
2	1	Tournament JMC - Trinity Randpark Ridge 2025				Tournament JMC - Trinity Randpark Ridge 2025
		date 2025-07-26	rnd 5	type Standard	result 1	date 2025-07-26	rnd 5	type Standard	result 1
		Opponent Matlou, L (Lukie Junior)				Opponent Matlou, L (Lukie Junior)
3	1	Tournament JMC - Trinity Randpark Ridge 2025				Tournament JMC - Trinity Randpark Ridge 2025
		date 2025-07-26	rnd 3	type Standard	result 1	date 2025-07-26	rnd 3	type Standard	result 1
		Opponent Chikwava, R (Ronald)				Opponent Chikwava, R (Ronald)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament JCC - Dainfern Chess League 2025				Tournament JCC - Dainfern Chess League 2025
		date 2025-02-17	rnd 3	type Standard	result 1	date 2025-03-10	rnd 5	type Standard	result 1
		Opponent Mabanga, N (Nkanyiso)				Opponent Ruvunangiza, Y (Yvan)
2	1	Tournament JMC - Trinity Randpark Ridge 2025				Tournament JMC - Trinity Randpark Ridge 2025
		date 2025-07-26	rnd 5	type Standard	result 1	date 2025-07-26	rnd 5	type Standard	result 1
		Opponent Matlou, L (Lukie Junior)				Opponent Matlou, L (Lukie Junior)
3	1	Tournament JMC - Trinity Randpark Ridge 2025				Tournament JMC - Trinity Randpark Ridge 2025
		date 2025-07-26	rnd 3	type Standard	result 1	date 2025-07-26	rnd 3	type Standard	result 1
		Opponent Chikwava, R (Ronald)				Opponent Chikwava, R (Ronald)

#	Games	Start				End
1	3	Tournament JCC - Dainfern Chess League 2025				Tournament JCC - Dainfern Chess League 2025
		date 2025-02-17	rnd 3	type Standard	result 1	date 2025-03-10	rnd 5	type Standard	result 1
		Opponent Mabanga, N (Nkanyiso)				Opponent Ruvunangiza, Y (Yvan)
2	1	Tournament JMC - Trinity Randpark Ridge 2025				Tournament JMC - Trinity Randpark Ridge 2025
		date 2025-07-26	rnd 5	type Standard	result 1	date 2025-07-26	rnd 5	type Standard	result 1
		Opponent Matlou, L (Lukie Junior)				Opponent Matlou, L (Lukie Junior)
3	1	Tournament JMC - Trinity Randpark Ridge 2025				Tournament JMC - Trinity Randpark Ridge 2025
		date 2025-07-26	rnd 3	type Standard	result 1	date 2025-07-26	rnd 3	type Standard	result 1
		Opponent Chikwava, R (Ronald)				Opponent Chikwava, R (Ronald)

No games found.

#	Games	Start				End

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	Chikwava ,R (Ronald)	1	1	425	1	1	425	0	0	0	0	0	0
1	Chikwava ,R (Ronald)	1	1075.9	1500.9	1	1077.7	1500.9	0	0	0	0	0	0
2	Ruvunangiza ,Y (Yvan)	1	1	425	1	1	425	0	0	0	0	0	0
2	Ruvunangiza ,Y (Yvan)	1	1180	1605	1	1175.8	1605	0	0	0	0	0	0
3	Hsu ,S (Shaun)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Hsu ,S (Shaun)	1	1200	775	1	1200	775	0	0	0	0	0	0
4	Seti ,X (Xoli)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Seti ,X (Xoli)	1	1200	775	1	1200	775	0	0	0	0	0	0
5	Srikarthik Kamatchi ,R (Ritheesh)	1	1	425	1	1	425	0	0	0	0	0	0
5	Srikarthik Kamatchi ,R (Ritheesh)	1	1228.7	1653.7	1	1233.1	1653.7	0	0	0	0	0	0
6	Mkhize ,S (Sihle)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Mkhize ,S (Sihle)	1	1199.9	774.9	1	1199.8	774.9	0	0	0	0	0	0
7	Mrutu ,L (Latifa)	1	1	425	1	1	425	0	0	0	0	0	0
7	Mrutu ,L (Latifa)	1	1182.1	1607.1	1	1177.7	1607.1	0	0	0	0	0	0
8	Mabanga ,N (Nkanyiso)	1	1	425	1	1	425	0	0	0	0	0	0
8	Mabanga ,N (Nkanyiso)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	Maposa ,M (Menelik)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Maposa ,M (Menelik)	1	1162.3	737.3	1	1165.8	737.3	0	0	0	0	0	0
10	Hewu ,K (Khwezi)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Hewu ,K (Khwezi)	1	1273.3	848.3	1	1286.6	848.3	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

Sewchurn, S (Sonali)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms