Chess South Africa Ratings Database

PLAYER PAGE

Personal

Sonday, R (Rayyan)

Chess SA id

1150147907

FIDE id

Date of birth

2015-11-13 (U12)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-10-19

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1221.6	1112.8	1283.8	1200
Raw rating	1221.6	1112.8	1283.8	1200
Weighted rating	1204	1107.5	1268.1	1200
Weighted performance	1001.2	0	995.1	0
Floor	721.6	700	797.5	700
K-factor	36	36	36	36
Min/Max rating change allowed	160.8	187.8	147.2	165.8
Highest rating	1271.9 2024-08-01	1200 2018-10-01	1311.6 2024-07-01	1200 2018-10-01
Highest raw rating	1221.6 2024-11-01	1200 2019-12-01	1297.5 2024-08-01	1200 2024-02-01
Highest weighted rating	1221.6 2018-10-01	1200 2018-10-01	1253.5 2025-08-01	1200 2018-10-01
Highest weighted performance	1271.9 2024-08-01	1200 2019-12-01	1311.6 2024-07-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1221.6	1112.8	1283.8	1200
Analysis
Rating	1221.6	1112.8	1283.8	1200
Raw rating	1221.6	1112.8	1283.8	1200
Weighted rating	1204	1107.5	1268.1
Weighted performance	1001.2	0	995.1
K-factor	36	36	36	36
Floor	721.6	700	797.5	700
Max/Min rating change allowed	160.8	187.8	147.2	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	1221.6	1112.8	1283.8	1200
New weighted rating	1207.5	1108.1	1271.9	1200
New weighted performance	994.2	0	988.1	0
Temp new rating	1221.6	1112.8	1283.8	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1221.6	1112.8	1283.8	1200
New K-factor	36	36	36	36
New floor	721.6	700	797.5	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	42	16	26
	43	8	35
	6	0	6
	0	0	0
History	91	24	67

Games since
	Main 53	Standard 16		Rapid 37		Blitz 0
Gender	Male
Age group	U12
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	3964		1325		523
Male	2988		945		405
U12	644		223		72
U12 Male	442		142		57
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	1156		588		246
Male	938		467		211
U12	204		117		46
U12 Male	151		82		38
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 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	91	35	38.46	-98.1	1222.5	1124.4
Standard	24	7	29.17	-177.1	1251.4	1074.3
Rapid	67	28	41.79	-69.8	1212.1	1142.3
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1221.6	1112.8	1283.8	1200
2025-09-30	1221.6	1112.8	1283.8	1200
2025-09-01	1221.6	1112.8	1283.8	1200
2025-08-01	1221.6	1112.8	1283.8	1200
2025-07-01	1221.6	1112.8	1283.8	1200
2025-06-01	1221.6	1112.8	1283.8	1200
2025-05-01	1221.6	1112.8	1283.8	1200
2025-04-01	1221.6	1112.8	1283.8	1200
2025-03-01	1221.6	1112.8	1283.8	1200
2025-02-01	1221.6	1112.8	1283.8	1200
2025-01-01	1221.6	1112.8	1283.8	1200
2024-12-01	1221.6	1112.8	1283.8	1200
2024-11-01	1221.6	1112.8	1283.8	1200
2024-10-01	1214.4	1112.8	1297.5	1200
2024-09-01	1214.4	1112.8	1297.5	1200
2024-08-01	1153.9	1063.2	1297.5	1200
2024-07-01	1102.3	1063.2	1156.8	1200
2024-09-01	1102.3	1063.2	1156.8	1200
2024-05-01	1077.7	1063.2	1135.2	1200
2024-04-01	1068	1063.2	1129.6	1200
2024-03-01	1112.8	1126	1129.6	1200
2024-02-01	1111.1	1130.4	1129.6	1200
2024-01-01	1111.1	1130.4	1129.6	1200
2023-12-01	1111.1	1130.4	1129.6	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	Laerskool Welgemoed Rapid 2024 (U10)	2024-10-19	2024-10-19	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
2	2nd Young Minds Classic 2024 (Junior)	2024-08-10	2024-08-10	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis
3	CT District North Top Schools 2024 (U9 Mixed)	2024-07-27	2024-07-27	Rapid	Cape Town (WCT)	5	3	3	Yes	Analysis
4	Cape Town Junior League Finals 2024 (U13 Open B)	2024-05-18	2024-05-18	Rapid	Cape Town (WCT)	6	6	3.5	Yes	Analysis
5	Cape Town Junior League - Qualifier 2 2024 (U13)	2024-04-20	2024-04-20	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
6	Cape Town Junior League Qualifier 2024 (U13 Open)	2024-04-06	2024-04-06	Rapid	Cape Town (WCT)	6	5	2	Yes	Analysis
7	Cape Town Metro Schools Chess Closed Individuals 2024 (U9 Boys)	2024-03-02	2024-03-03	Standard	Cape Town (WCT)	6	6	0.5	Yes	Analysis
8	North District School Trials 2024 (U9 Boys)	2024-02-03	2024-02-03	Standard	Cape Town (WCT)	5	5	2	Yes	Analysis
9	Rylib Summer Slam 2023 (Development)	2023-12-12	2023-12-12	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
10	Kraaifontein Open 2023 (U10)	2023-12-09	2023-12-09	Rapid	Cape Town (WCT)	6	5	1.5	Yes	Analysis
11	Western Cape Closed Championship 2023 (U10)	2023-09-23	2023-09-23	Rapid	Cape Town (WCT)	6	0	0	No	Analysis
12	Western Cape Top Schools 2023 (U9 Mixed)	2023-09-02	2023-09-03	Standard	Cape Winelands (WCW)	6	4	0.5	Yes	Analysis
13	Curro Durbanville Chess Open Rapid 2023 (U10)	2023-07-15	2023-07-15	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
14	CT Metro District North Top Schools Chess 2023 (U9 Mixed)	2023-07-29	2023-07-29	Rapid	Cape Town (WCT)	3	2	1	Yes	Analysis
15	WP Closed 2023 (U10)	2023-06-17	2023-06-17	Standard	Cape Town (WCT)	5	4	1	Yes	Analysis
16	Cape Town Metro Schools Chess Closed Individuals 2023 (U9 Boys)	2023-03-04	2023-03-04	Rapid	Cape Town (WCT)	5	5	1	Yes	Analysis
17	North District School Trials 2023 (U9 Boys+Girls)	2023-02-04	2023-02-04	Rapid	Cape Town (WCT)	5	5	3	Yes	Analysis
18	Laerskool Welgemoed Rapid 2023 (U10)	2023-02-11	2023-02-11	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
19	ACL November 2022 (Beginners)	2022-11-12	2022-11-12	Rapid	Cape Town (WCT)	6	6	0	Yes	Analysis

#	Games	Start				End
1	4	Tournament 2nd Young Minds Classic 2024				Tournament Laerskool Welgemoed Rapid 2024
		date 2024-08-10	rnd 3	type Standard	result 1	date 2024-10-19	rnd 1	type Rapid	result 1
		Opponent Lekau, A (Atlegang Jordan)				Opponent Rossouw, J (Jeandre)
2	4	Tournament Cape Town Junior League Finals 2024				Tournament CT District North Top Schools 2024
		date 2024-05-18	rnd 6	type Rapid	result 1	date 2024-07-27	rnd 5	type Rapid	result 1
		Opponent Matthee, A (Alexa)				Opponent Hendricks, Z (Zayne)
3	3	Tournament Kraaifontein Open 2023				Tournament Rylib Summer Slam 2023
		date 2023-12-09	rnd 5	type Rapid	result 0.5	date 2023-12-12	rnd 1	type Rapid	result 1
		Opponent Du Plooy, A (Alwin)				Opponent Sampson, J (Jamal)

#	Games	Start				End
1	3	Tournament 2nd Young Minds Classic 2024				Tournament 2nd Young Minds Classic 2024
		date 2024-08-10	rnd 3	type Standard	result 1	date 2024-08-10	rnd 5	type Standard	result 1
		Opponent Lekau, A (Atlegang Jordan)				Opponent Nel, M (Mattheus Johan)
2	1	Tournament Cape Town Metro Schools Chess Closed Individuals 2024				Tournament Cape Town Metro Schools Chess Closed Individuals 2024
		date 2024-03-03	rnd 6	type Standard	result 0.5	date 2024-03-03	rnd 6	type Standard	result 0.5
		Opponent Foster, B (Bjorn)				Opponent Foster, B (Bjorn)
3	1	Tournament North District School Trials 2024				Tournament North District School Trials 2024
		date 2024-02-03	rnd 4	type Standard	result 1	date 2024-02-03	rnd 4	type Standard	result 1
		Opponent Smuts, H (Hugo)				Opponent Smuts, H (Hugo)

#	Games	Start				End
1	5	Tournament Cape Town Junior League Finals 2024				Tournament Laerskool Welgemoed Rapid 2024
		date 2024-05-18	rnd 6	type Rapid	result 1	date 2024-10-19	rnd 1	type Rapid	result 1
		Opponent Matthee, A (Alexa)				Opponent Rossouw, J (Jeandre)
2	3	Tournament Kraaifontein Open 2023				Tournament Rylib Summer Slam 2023
		date 2023-12-09	rnd 5	type Rapid	result 0.5	date 2023-12-12	rnd 1	type Rapid	result 1
		Opponent Du Plooy, A (Alwin)				Opponent Sampson, J (Jamal)
3	3	Tournament Curro Durbanville Chess Open Rapid 2023				Tournament Curro Durbanville Chess Open Rapid 2023
		date 2023-07-15	rnd 3	type Rapid	result 1	date 2023-07-15	rnd 5	type Rapid	result 1
		Opponent Burger, J (Jj)				Opponent Magi, A (Aqhame Alizwa)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament 2nd Young Minds Classic 2024				Tournament Laerskool Welgemoed Rapid 2024
		date 2024-08-10	rnd 3	type Standard	result 1	date 2024-10-19	rnd 1	type Rapid	result 1
		Opponent Lekau, A (Atlegang Jordan)				Opponent Rossouw, J (Jeandre)
2	4	Tournament Cape Town Junior League Finals 2024				Tournament CT District North Top Schools 2024
		date 2024-05-18	rnd 6	type Rapid	result 1	date 2024-07-27	rnd 5	type Rapid	result 1
		Opponent Matthee, A (Alexa)				Opponent Hendricks, Z (Zayne)
3	3	Tournament Curro Durbanville Chess Open Rapid 2023				Tournament Curro Durbanville Chess Open Rapid 2023
		date 2023-07-15	rnd 3	type Rapid	result 1	date 2023-07-15	rnd 5	type Rapid	result 1
		Opponent Burger, J (Jj)				Opponent Magi, A (Aqhame Alizwa)

#	Games	Start				End
1	3	Tournament 2nd Young Minds Classic 2024				Tournament 2nd Young Minds Classic 2024
		date 2024-08-10	rnd 3	type Standard	result 1	date 2024-08-10	rnd 5	type Standard	result 1
		Opponent Lekau, A (Atlegang Jordan)				Opponent Nel, M (Mattheus Johan)
2	1	Tournament North District School Trials 2024				Tournament North District School Trials 2024
		date 2024-02-03	rnd 4	type Standard	result 1	date 2024-02-03	rnd 4	type Standard	result 1
		Opponent Smuts, H (Hugo)				Opponent Smuts, H (Hugo)
3	1	Tournament North District School Trials 2024				Tournament North District School Trials 2024
		date 2024-02-03	rnd 2	type Standard	result 1	date 2024-02-03	rnd 2	type Standard	result 1
		Opponent Lekau, A (Atlegang Jordan)				Opponent Lekau, A (Atlegang Jordan)

#	Games	Start				End
1	5	Tournament Cape Town Junior League Finals 2024				Tournament Laerskool Welgemoed Rapid 2024
		date 2024-05-18	rnd 6	type Rapid	result 1	date 2024-10-19	rnd 1	type Rapid	result 1
		Opponent Matthee, A (Alexa)				Opponent Rossouw, J (Jeandre)
2	3	Tournament Curro Durbanville Chess Open Rapid 2023				Tournament Curro Durbanville Chess Open Rapid 2023
		date 2023-07-15	rnd 3	type Rapid	result 1	date 2023-07-15	rnd 5	type Rapid	result 1
		Opponent Burger, J (Jj)				Opponent Magi, A (Aqhame Alizwa)
3	3	Tournament North District School Trials 2023				Tournament North District School Trials 2023
		date 2023-02-04	rnd 2	type Rapid	result 1	date 2023-02-04	rnd 4	type Rapid	result 1
		Opponent Mayedwa, Z (Zwelande)				Opponent Handile, L (Linomtha)

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	Nogaga ,O (Owethu)	3	0	-425	1	0	-425	2	0	-425	0	0	0
1	Nogaga ,O (Owethu)	3	1236.3	811.3	1	1198.2	811.3	2	1271.9	811.3	0	0	0
2	Techow-Grubert ,D (Dominik)	2	1	0	2	1	0	0	0	0	0	0	0
2	Techow-Grubert ,D (Dominik)	2	1277.4	1277.4	2	1259.9	1277.4	0	0	0	0	0	0
3	Kruger ,W (Willem Lodewyk Kruger)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Kruger ,W (Willem Lodewyk Kruger)	2	1206.4	781.4	2	1208.2	781.4	0	0	0	0	0	0
4	Chapela ,K (Kai)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
4	Chapela ,K (Kai)	2	1236.4	1023.9	2	1218.9	1023.9	0	0	0	0	0	0
5	Lekau ,A (Atlegang Jordan)	2	2	425	2	2	425	0	0	0	0	0	0
5	Lekau ,A (Atlegang Jordan)	2	1160	1585	2	1161.8	1585	0	0	0	0	0	0
6	Wiggins ,M (Mikhail)	2	1	0	0	0	0	2	1	0	0	0	0
6	Wiggins ,M (Mikhail)	2	1174.4	1174.4	0	0	0	2	1163.5	1174.4	0	0	0
7	Tyhalibhongo ,G (Gift)	2	1.5	212.5	0	0	0	2	1.5	212.5	0	0	0
7	Tyhalibhongo ,G (Gift)	2	1131.5	1344	0	0	0	2	1209.7	1344	0	0	0
8	Maphungu ,L (Likhona)	2	2	425	0	0	0	2	2	425	0	0	0
8	Maphungu ,L (Likhona)	2	1189.7	1614.7	0	0	0	2	1186.7	1614.7	0	0	0
9	Marner ,L (Loannes)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Marner ,L (Loannes)	1	1249.6	824.6	1	1255	824.6	0	0	0	0	0	0
10	Musakwa ,C (Cole)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Musakwa ,C (Cole)	1	1258.3	833.3	1	1224	833.3	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Sonday, R (Rayyan)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms