Chess South Africa Ratings Database

PLAYER PAGE

Personal

Sewdas, R (Riya)

Chess SA id

2150317289

FIDE id

Date of birth

2015-05-28 (U12)

Gender

Female

Region

Sedibeng (GSV)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-09-20

Personal details last changed

1900-01-01

Junior GPX Games

24.5

Junior GPX Points

1070.5

Item	Main	Standard	Rapid	Blitz
Rating	1203.5	1202.1	1216.8	1200
Raw rating	1203.5	1202.1	1216.8	1200
Weighted rating	1201.6	1199.5	1207.1	1200
Weighted performance	1105	0	0	0
Floor	710.8	702.1	716.8	700
K-factor	36	36	36	36
Min/Max rating change allowed	165	165.3	161.9	165.8
Highest rating	1210.8 2025-05-05	1202.1 2025-09-30	1216.8 2025-05-05	1200 2025-04-01
Highest raw rating	1210.8 2025-05-05	1202.1 2025-09-30	1216.8 2025-05-05	1200 2025-04-01
Highest weighted rating	1210.8 2025-06-01	1199.9 2025-03-09	1204.9 2025-08-01	1200 2025-04-01
Highest weighted performance	1105 2025-09-30	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	1203.5	1202.1	1216.8	1200
Analysis
Rating	1203.5	1202.1	1216.8	1200
Raw rating	1203.5	1202.1	1216.8	1200
Weighted rating	1201.6	1199.5	1207.1
Weighted performance	1105	0	0
K-factor	36	36	36	36
Floor	710.8	702.1	716.8	700
Max/Min rating change allowed	165	165.3	161.9	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	1203.5	1202.1	1216.8	1200
New weighted rating	1201.8	1199.7	1208.1	1200
New weighted performance	1104.6	0	0	0
Temp new rating	1203.5	1202.1	1216.8	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1203.5	1202.1	1216.8	1200
New K-factor	36	36	36	36
New floor	710.8	702.1	716.8	700

Item	Main	Standard	Rapid
	0	0	0
	30	19	11
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	30	19	11

Games since
	Main 30	Standard 19		Rapid 11		Blitz 0
Gender	Female
Age group	U12
Region	Sedibeng (GSV)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 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	30	11	36.67	-113.3	1253.6	1140.3
Standard	19	6	31.58	-156.6	1271.4	1114.8
Rapid	11	5	45.45	-38.6	1223	1184.3
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	30	11	36.67	-113.3	1253.6	1140.3
Standard	19	6	31.58	-156.6	1271.4	1114.8
Rapid	11	5	45.45	-38.6	1223	1184.3
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1203.5	1202.1	1216.8	1200
2025-09-01	1201.1	1198.9	1216.8	1200
2025-08-01	1201.1	1198.9	1216.8	1200
2025-07-01	1198.5	1194.8	1216.8	1200
2025-06-01	1210.8	1199.9	1216.8	1200
2025-05-01	1210.8	1199.8	1216.8	1200
2025-04-01	1197.4	1198.6	1197.1	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
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-06-01	1200	1200	1200	1200
2024-08-01	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
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	1200
2023-11-01	1200	1200	1200	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Laerskool Eligwa Open 20 Sept 2025 (E)	2025-09-20	2025-09-20	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
2	Eureka Chess Open 26 July 2025 (G)	2025-07-26	2025-07-26	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
3	HS Driehoek Chess Open 2025 (E)	2025-06-14	2025-06-14	Standard	Sedibeng (GSV)	5	4	0	Yes	Analysis
4	HS Overvaal Rapid 12 Apr 2025 (E)	2025-04-12	2025-04-12	Rapid	Sedibeng (GSV)	5	5	3	Yes	Analysis
5	Sebokeng Chess Rapid 21 Mar 2025 (C)	2025-03-21	2025-03-21	Rapid	Sedibeng (GSV)	6	6	2	Yes	Analysis
6	Hoerskool Drie Riviere Open 08 March 2025 (E)	2025-03-08	2025-03-08	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Laerskool Eligwa Open 20 Sept 2025 (E)	2025-09-20	2025-09-20	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
2	Eureka Chess Open 26 July 2025 (G)	2025-07-26	2025-07-26	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
3	HS Driehoek Chess Open 2025 (E)	2025-06-14	2025-06-14	Standard	Sedibeng (GSV)	5	4	0	Yes	Analysis
4	HS Overvaal Rapid 12 Apr 2025 (E)	2025-04-12	2025-04-12	Rapid	Sedibeng (GSV)	5	5	3	Yes	Analysis
5	Sebokeng Chess Rapid 21 Mar 2025 (C)	2025-03-21	2025-03-21	Rapid	Sedibeng (GSV)	6	6	2	Yes	Analysis
6	Hoerskool Drie Riviere Open 08 March 2025 (E)	2025-03-08	2025-03-08	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis

#	Games	Start				End
1	3	Tournament HS Overvaal Rapid 12 Apr 2025				Tournament HS Overvaal Rapid 12 Apr 2025
		date 2025-04-12	rnd 3	type Rapid	result 1	date 2025-04-12	rnd 5	type Rapid	result 1
		Opponent Mphanya, N (Naledi)				Opponent Masemola, M (Mabotsi)
2	2	Tournament Laerskool Eligwa Open 20 Sept 2025				Tournament Laerskool Eligwa Open 20 Sept 2025
		date 2025-09-20	rnd 3	type Standard	result 1	date 2025-09-20	rnd 4	type Standard	result 1
		Opponent Mashigo, T (Thorisho)				Opponent Allott, D (Dunay)
3	2	Tournament Sebokeng Chess Rapid 21 Mar 2025				Tournament HS Overvaal Rapid 12 Apr 2025
		date 2025-03-21	rnd 6	type Rapid	result 1	date 2025-04-12	rnd 1	type Rapid	result 0.5
		Opponent Matsabo, H (Hlonolofatso)				Opponent Swarts, C (Ciara)

#	Games	Start				End
1	2	Tournament Laerskool Eligwa Open 20 Sept 2025				Tournament Laerskool Eligwa Open 20 Sept 2025
		date 2025-09-20	rnd 3	type Standard	result 1	date 2025-09-20	rnd 4	type Standard	result 1
		Opponent Mashigo, T (Thorisho)				Opponent Allott, D (Dunay)
2	1	Tournament Eureka Chess Open 26 July 2025				Tournament Eureka Chess Open 26 July 2025
		date 2025-07-26	rnd 4	type Standard	result 1	date 2025-07-26	rnd 4	type Standard	result 1
		Opponent Kunene, P (Phenyoantle)				Opponent Kunene, P (Phenyoantle)
3	1	Tournament Eureka Chess Open 26 July 2025				Tournament Eureka Chess Open 26 July 2025
		date 2025-07-26	rnd 2	type Standard	result 1	date 2025-07-26	rnd 2	type Standard	result 1
		Opponent Mashiloane, M (Mosa Lonwabo)				Opponent Mashiloane, M (Mosa Lonwabo)

#	Games	Start				End
1	3	Tournament HS Overvaal Rapid 12 Apr 2025				Tournament HS Overvaal Rapid 12 Apr 2025
		date 2025-04-12	rnd 3	type Rapid	result 1	date 2025-04-12	rnd 5	type Rapid	result 1
		Opponent Mphanya, N (Naledi)				Opponent Masemola, M (Mabotsi)
2	2	Tournament Sebokeng Chess Rapid 21 Mar 2025				Tournament HS Overvaal Rapid 12 Apr 2025
		date 2025-03-21	rnd 6	type Rapid	result 1	date 2025-04-12	rnd 1	type Rapid	result 0.5
		Opponent Matsabo, H (Hlonolofatso)				Opponent Swarts, C (Ciara)
3	1	Tournament Sebokeng Chess Rapid 21 Mar 2025				Tournament Sebokeng Chess Rapid 21 Mar 2025
		date 2025-03-21	rnd 2	type Rapid	result 1	date 2025-03-21	rnd 2	type Rapid	result 1
		Opponent Mkhanazi, M (Mthokozisi)				Opponent Mkhanazi, M (Mthokozisi)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Laerskool Eligwa Open 20 Sept 2025				Tournament Laerskool Eligwa Open 20 Sept 2025
		date 2025-09-20	rnd 3	type Standard	result 1	date 2025-09-20	rnd 4	type Standard	result 1
		Opponent Mashigo, T (Thorisho)				Opponent Allott, D (Dunay)
2	1	Tournament Eureka Chess Open 26 July 2025				Tournament Eureka Chess Open 26 July 2025
		date 2025-07-26	rnd 4	type Standard	result 1	date 2025-07-26	rnd 4	type Standard	result 1
		Opponent Kunene, P (Phenyoantle)				Opponent Kunene, P (Phenyoantle)
3	1	Tournament Eureka Chess Open 26 July 2025				Tournament Eureka Chess Open 26 July 2025
		date 2025-07-26	rnd 2	type Standard	result 1	date 2025-07-26	rnd 2	type Standard	result 1
		Opponent Mashiloane, M (Mosa Lonwabo)				Opponent Mashiloane, M (Mosa Lonwabo)

#	Games	Start				End
1	2	Tournament Laerskool Eligwa Open 20 Sept 2025				Tournament Laerskool Eligwa Open 20 Sept 2025
		date 2025-09-20	rnd 3	type Standard	result 1	date 2025-09-20	rnd 4	type Standard	result 1
		Opponent Mashigo, T (Thorisho)				Opponent Allott, D (Dunay)
2	1	Tournament Eureka Chess Open 26 July 2025				Tournament Eureka Chess Open 26 July 2025
		date 2025-07-26	rnd 4	type Standard	result 1	date 2025-07-26	rnd 4	type Standard	result 1
		Opponent Kunene, P (Phenyoantle)				Opponent Kunene, P (Phenyoantle)
3	1	Tournament Eureka Chess Open 26 July 2025				Tournament Eureka Chess Open 26 July 2025
		date 2025-07-26	rnd 2	type Standard	result 1	date 2025-07-26	rnd 2	type Standard	result 1
		Opponent Mashiloane, M (Mosa Lonwabo)				Opponent Mashiloane, M (Mosa Lonwabo)

#	Games	Start				End
1	1	Tournament HS Overvaal Rapid 12 Apr 2025				Tournament HS Overvaal Rapid 12 Apr 2025
		date 2025-04-12	rnd 5	type Rapid	result 1	date 2025-04-12	rnd 5	type Rapid	result 1
		Opponent Masemola, M (Mabotsi)				Opponent Masemola, M (Mabotsi)
2	1	Tournament HS Overvaal Rapid 12 Apr 2025				Tournament HS Overvaal Rapid 12 Apr 2025
		date 2025-04-12	rnd 3	type Rapid	result 1	date 2025-04-12	rnd 3	type Rapid	result 1
		Opponent Mphanya, N (Naledi)				Opponent Mphanya, N (Naledi)
3	1	Tournament Sebokeng Chess Rapid 21 Mar 2025				Tournament Sebokeng Chess Rapid 21 Mar 2025
		date 2025-03-21	rnd 6	type Rapid	result 1	date 2025-03-21	rnd 6	type Rapid	result 1
		Opponent Matsabo, H (Hlonolofatso)				Opponent Matsabo, H (Hlonolofatso)

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	Mashiloane ,M (Mosa Lonwabo)	2	2	425	2	2	425	0	0	0	0	0	0
1	Mashiloane ,M (Mosa Lonwabo)	2	1210.2	1635.2	2	1202.4	1635.2	0	0	0	0	0	0
2	Roux ,R (Rivan)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Roux ,R (Rivan)	2	1290.2	865.2	2	1276.8	865.2	0	0	0	0	0	0
3	Swarts ,C (Ciara)	2	0.5	-212.5	1	0	-425	1	0.5	0	0	0	0
3	Swarts ,C (Ciara)	2	1282.8	1070.3	1	1233.2	857.8	1	1222.6	1282.8	0	0	0
4	Kruger ,B (Barend)	2	0	-425	1	0	-425	1	0	-425	0	0	0
4	Kruger ,B (Barend)	2	1197.4	772.4	1	1193.6	772.4	1	1192	772.4	0	0	0
5	Mphanya ,N (Naledi)	2	2	425	1	1	425	1	1	425	0	0	0
5	Mphanya ,N (Naledi)	2	1192.4	1617.4	1	1194.6	1617.4	1	1200	1617.4	0	0	0
6	Bosman ,P (Pieter)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Bosman ,P (Pieter)	1	1254.5	829.5	1	1267.5	829.5	0	0	0	0	0	0
7	Pillay ,Y (Yishai)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Pillay ,Y (Yishai)	1	1480.9	1055.9	1	1477.7	1055.9	0	0	0	0	0	0
8	Emanuel ,S (Shiloh)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Emanuel ,S (Shiloh)	1	1380.2	955.2	1	1365.3	955.2	0	0	0	0	0	0
9	Mashigo ,T (Thorisho)	1	1	425	1	1	425	0	0	0	0	0	0
9	Mashigo ,T (Thorisho)	1	1170.2	1595.2	1	1164.3	1595.2	0	0	0	0	0	0
10	Nxuwa ,T (Thoriso Lukhanye)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Nxuwa ,T (Thoriso Lukhanye)	1	1217.9	792.9	1	1221	792.9	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Sewdas, R (Riya)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms