Chess South Africa Ratings Database

PLAYER PAGE

Personal

Sher, J (Jonah)

Chess SA id

1120137368

FIDE id

Date of birth

2012-03-29 (U14)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-10-26

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1325.2	1290.3	1341.2	1200
Raw rating	1324.8	1288	1341.2	1200
Weighted rating	1325.2	1290.3	1340.9	1200
Weighted performance	1027.4	1016.6	1068.6	0
Floor	879	869.6	864.6	700
K-factor	36	36	36	36
Min/Max rating change allowed	138.8	146.3	135.6	165.8
Highest rating	1393 2024-03-01	1384.1 2024-06-01	1379.3 2023-05-01	1200 2018-10-01
Highest raw rating	1379 2024-07-01	1369.6 2024-07-01	1364.6 2023-06-01	1200 2024-02-01
Highest weighted rating	1324.8 2025-08-01	1288 2025-08-01	1364.6 2025-07-01	1200 2018-10-01
Highest weighted performance	1393 2024-03-01	1384.1 2024-06-01	1379.3 2023-05-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.1	0.1	0	0
New rating	1325	1290.4	1341.2	1200
Analysis
Rating	1325.2	1290.3	1341.2	1200
Raw rating	1324.8	1288	1341.2	1200
Weighted rating	1325.2	1290.3	1340.9
Weighted performance	1027.4	1016.6	1068.6
K-factor	36	36	36	36
Floor	879	869.6	864.6	700
Max/Min rating change allowed	138.8	146.3	135.6	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	1324.8	1288	1341.2	1200
New weighted rating	1325	1290.4	1340.8	1200
New weighted performance	1020.4	1009.6	1060.8	0
Temp new rating	1325	1290.4	1341.2	1200
Temp new rating +/-	-0.1	0.1	0	0
Final new rating +/-	-0.1	0.1	0	0
New rating	1325	1290.4	1341.2	1200
New K-factor	36	36	36	36
New floor	879	869.6	864.6	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	50	39	11
	64	22	42
	49	22	27
	0	0	0
History	163	83	80

Games since
	Main 50	Standard 39		Rapid 11		Blitz 0
Gender	Male
Age group	U14
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	3017		983		412
Male	2373		735		327
U14	552		187		77
U14 Male	398		126		54
Standard
	RSA		Province		Region
Overall	3269		934		399
Male	2554		676		305
U14	614		175		74
U14 Male	435		106		46
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 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	163	80	49.08	-7.8	1290.4	1282.6
Standard	83	37.5	45.18	-41	1294.8	1253.8
Rapid	80	42.5	53.12	26.6	1285.9	1312.4
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1324.8	1288	1341.2	1200
2025-09-30	1324.8	1288	1341.2	1200
2025-09-01	1324.8	1288	1341.2	1200
2025-08-01	1324.8	1288	1341.2	1200
2025-07-01	1324.4	1286.6	1341.2	1200
2025-06-01	1323.9	1285	1341.2	1200
2025-05-01	1323.2	1283.2	1341.2	1200
2025-04-01	1322.3	1281.1	1341.2	1200
2025-03-01	1321.1	1278.7	1341.2	1200
2025-02-01	1317.8	1275	1341.2	1200
2025-01-01	1288.5	1257.6	1341.2	1200
2024-12-01	1288.5	1257.6	1341.2	1200
2024-11-01	1288.5	1257.6	1341.2	1200
2024-10-01	1337	1325.3	1335.4	1200
2024-09-01	1337	1325.3	1335.4	1200
2024-08-01	1379	1369.6	1335.4	1200
2024-07-01	1379	1369.6	1335.4	1200
2024-09-01	1374.6	1359.7	1335.4	1200
2024-05-01	1369.1	1332.8	1348.7	1200
2024-04-01	1369.1	1332.8	1348.7	1200
2024-03-01	1315.5	1264.4	1348.7	1200
2024-02-01	1291.8	1194.4	1348.7	1200
2024-01-01	1291.8	1194.4	1348.7	1200
2023-12-01	1291.8	1194.4	1348.7	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 (U14)	2024-10-19	2024-10-19	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
2	Chess Elevation Series - October 2024 (Level 3B)	2024-10-25	2024-10-26	Standard	Cape Town (WCT)	5	5	1	Yes	Analysis
3	2nd Young Minds Classic 2024 (Intermediate)	2024-08-10	2024-08-11	Standard	Cape Town (WCT)	5	5	2	Yes	Analysis
4	Cape Town Chess Federation Closed Chess Championships 2024 (U14)	2024-06-15	2024-06-16	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
5	Steinitz Chess Festival 2024 (U14)	2024-05-11	2024-05-11	Rapid	Cape Town (WCT)	5	5	2.5	Yes	Analysis
6	Western Cape PS Individuals Championship 2024 (U13 Boys)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
7	Cape Town Metro Schools Chess Closed Individuals 2024 (U13 Boys)	2024-03-02	2024-03-03	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
8	CT Metro Central District Schools Chess Individuals Trials 2024 (U13 Boys)	2024-02-03	2024-02-03	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis
9	Cape of Good Hope Open Chess Tournament 2024 (Intermediate)	2024-02-17	2024-02-17	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
10	Western Cape Closed Championship 2023 (U12)	2023-09-23	2023-09-23	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis
11	CW Top Schools 2023 (Intermediate)	2023-08-12	2023-08-12	Standard	West Coast (WCU)	5	4	2	Yes	Analysis
12	WP Closed 2023 (U12)	2023-06-16	2023-06-17	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
13	GPCA Rapid 2023 (Advanced)	2023-06-24	2023-06-24	Rapid	Cape Town (WCT)	7	7	3	Yes	Analysis
14	Steinitz Open 2023 (U12)	2023-05-27	2023-05-27	Rapid	Cape Town (WCT)	5	5	4	Yes	Analysis
15	Casuarina International 2023 (Rapid)	2023-03-11	2023-03-12	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
16	Cape Town Open 2023 (U12)	2023-03-25	2023-03-25	Rapid	Cape Town (WCT)	6	6	3.5	Yes	Analysis
17	Cape Town Metro Schools Chess Closed Individuals 2023 (U11 Boys)	2023-03-03	2023-03-04	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis
18	Central District School Trials 2023 (U11 Boys)	2023-02-03	2023-02-04	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
19	Laerskool Welgemoed Rapid 2023 (U12)	2023-02-11	2023-02-11	Rapid	Cape Town (WCT)	6	6	4.5	Yes	Analysis
20	Cape of Good Hope Open 2023 (U12)	2023-01-28	2023-01-28	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
21	Metro Rapid 2022 (U11 Boys)	2022-10-22	2022-10-22	Rapid	Cape Town (WCT)	5	5	3	Yes	Analysis
22	2022 Western Province Club League (D)	2022-08-27	2022-10-01	Standard	Cape Town (WCT)	7	3	0	Yes	Analysis
23	2022 Western Province Club League (Junior)	2022-08-27	2022-09-17	Standard	Cape Town (WCT)	7	2	0.5	Yes	Analysis
24	Western Cape Closed Championship 2022 (U12)	2022-09-24	2022-09-24	Standard	Cape Winelands (WCW)	5	5	2.5	Yes	Analysis
25	WP Closed 2022 (U12)	2022-06-16	2022-06-16	Standard	Cape Town (WCT)	6	6	2.5	Yes	Analysis
26	Stellenberg Chess Championship 2022 (U12)	2022-06-25	2022-06-25	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
27	CTCA Rapid Masters @ Kraaifontein Library 2022 (Junior)	2022-05-14	2022-05-14	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
28	Metro WP Schools Chess Trials 2022 (U11 Boys)	2022-04-22	2022-04-23	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis
29	2022 Central District Individual Trials (U11)	2022-03-05	2022-03-05	Rapid	Cape Town (WCT)	5	5	3	Yes	Analysis
30	Laerskool Welgemoed 12th Annual Chess Challenge 2022 (U12)	2022-02-19	2022-02-19	Rapid	Cape Town (WCT)	5	5	2	Yes	Analysis

#	Games	Start				End
1	4	Tournament Steinitz Open 2023				Tournament WP Closed 2023
		date 2023-05-27	rnd 4	type Rapid	result 1	date 2023-06-16	rnd 2	type Standard	result 1
		Opponent Summers, I (Isla)				Opponent Damane, L (Lukhanyo)
2	4	Tournament Western Cape Closed Championship 2022				Tournament Metro Rapid 2022
		date 2022-09-24	rnd 3	type Standard	result 1	date 2022-10-22	rnd 1	type Rapid	result 1
		Opponent Samuel, S (Senti)				Opponent Nomkonwana, K (Khanya)
3	3	Tournament 2nd Young Minds Classic 2024				Tournament Laerskool Welgemoed Rapid 2024
		date 2024-08-11	rnd 4	type Standard	result 1	date 2024-10-19	rnd 1	type Rapid	result 1
		Opponent Burger, M (Marquis)				Opponent Timm, M (Matthew)

#	Games	Start				End
1	4	Tournament Western Cape Closed Championship 2022				Tournament Central District School Trials 2023
		date 2022-09-24	rnd 3	type Standard	result 1	date 2023-02-03	rnd 1	type Standard	result 1
		Opponent Samuel, S (Senti)				Opponent Damane, L (Lukhanyo)
2	3	Tournament Cape Town Metro Schools Chess Closed Individuals 2024				Tournament Cape Town Metro Schools Chess Closed Individuals 2024
		date 2024-03-02	rnd 2	type Standard	result 1	date 2024-03-03	rnd 4	type Standard	result 1
		Opponent Bessesen, J (Joakim)				Opponent Shaw, O (Oliver)
3	2	Tournament 2nd Young Minds Classic 2024				Tournament 2nd Young Minds Classic 2024
		date 2024-08-11	rnd 4	type Standard	result 1	date 2024-08-11	rnd 5	type Standard	result 1
		Opponent Burger, M (Marquis)				Opponent Gumbo, N (Nyasha)

#	Games	Start				End
1	4	Tournament 2022 Central District Individual Trials				Tournament CTCA Rapid Masters @ Kraaifontein Library 2022
		date 2022-03-05	rnd 4	type Rapid	result 1	date 2022-05-14	rnd 2	type Rapid	result 1
		Opponent Jawoodien, I (Irshaad)				Opponent Admas, J (Justin)
2	3	Tournament Western Cape Closed Championship 2023				Tournament Steinitz Chess Festival 2024
		date 2023-09-23	rnd 6	type Rapid	result 1	date 2024-05-11	rnd 2	type Rapid	result 0.5
		Opponent Calitz, S (Steyn)				Opponent Bowman, L (Lian)
3	3	Tournament GPCA Rapid 2023				Tournament Western Cape Closed Championship 2023
		date 2023-06-24	rnd 7	type Rapid	result 1	date 2023-09-23	rnd 2	type Rapid	result 1
		Opponent Green, L (Lyndon)				Opponent Pretorius, M (Meyer)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Steinitz Open 2023				Tournament WP Closed 2023
		date 2023-05-27	rnd 4	type Rapid	result 1	date 2023-06-16	rnd 2	type Standard	result 1
		Opponent Summers, I (Isla)				Opponent Damane, L (Lukhanyo)
2	3	Tournament 2nd Young Minds Classic 2024				Tournament Laerskool Welgemoed Rapid 2024
		date 2024-08-11	rnd 4	type Standard	result 1	date 2024-10-19	rnd 1	type Rapid	result 1
		Opponent Burger, M (Marquis)				Opponent Timm, M (Matthew)
3	3	Tournament Cape Town Metro Schools Chess Closed Individuals 2024				Tournament Cape Town Metro Schools Chess Closed Individuals 2024
		date 2024-03-02	rnd 2	type Standard	result 1	date 2024-03-03	rnd 4	type Standard	result 1
		Opponent Bessesen, J (Joakim)				Opponent Shaw, O (Oliver)

#	Games	Start				End
1	3	Tournament Cape Town Metro Schools Chess Closed Individuals 2024				Tournament Cape Town Metro Schools Chess Closed Individuals 2024
		date 2024-03-02	rnd 2	type Standard	result 1	date 2024-03-03	rnd 4	type Standard	result 1
		Opponent Bessesen, J (Joakim)				Opponent Shaw, O (Oliver)
2	2	Tournament 2nd Young Minds Classic 2024				Tournament 2nd Young Minds Classic 2024
		date 2024-08-11	rnd 4	type Standard	result 1	date 2024-08-11	rnd 5	type Standard	result 1
		Opponent Burger, M (Marquis)				Opponent Gumbo, N (Nyasha)
3	2	Tournament Cape Town Chess Federation Closed Chess Championships 2024				Tournament Cape Town Chess Federation Closed Chess Championships 2024
		date 2024-06-15	rnd 3	type Standard	result 1	date 2024-06-16	rnd 4	type Standard	result 1
		Opponent He, Z (Zonghan)				Opponent Waldeck, A (Aaron)

#	Games	Start				End
1	4	Tournament 2022 Central District Individual Trials				Tournament CTCA Rapid Masters @ Kraaifontein Library 2022
		date 2022-03-05	rnd 4	type Rapid	result 1	date 2022-05-14	rnd 2	type Rapid	result 1
		Opponent Jawoodien, I (Irshaad)				Opponent Admas, J (Justin)
2	3	Tournament GPCA Rapid 2023				Tournament Western Cape Closed Championship 2023
		date 2023-06-24	rnd 7	type Rapid	result 1	date 2023-09-23	rnd 2	type Rapid	result 1
		Opponent Green, L (Lyndon)				Opponent Pretorius, M (Meyer)
3	3	Tournament Cape Town Open 2023				Tournament Cape Town Open 2023
		date 2023-03-25	rnd 1	type Rapid	result 1	date 2023-03-25	rnd 3	type Rapid	result 1
		Opponent Moyakhe, L (Lisakhanya)				Opponent Mputing, T (Thando)

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	He ,Z (Zonghan)	5	4.5	340	1	1	425	4	3.5	318.8	0	0	0
1	He ,Z (Zonghan)	5	1217	1557	1	1213.6	1642	4	1226.8	1535.8	0	0	0
2	Damane ,L (Lukhanyo)	3	3	425	3	3	425	0	0	0	0	0	0
2	Damane ,L (Lukhanyo)	3	1256.2	1681.2	3	1217.7	1681.2	0	0	0	0	0	0
3	Guo ,A (Aleks)	3	0	-425	2	0	-425	1	0	-425	0	0	0
3	Guo ,A (Aleks)	3	1341.3	916.3	2	1250.4	916.3	1	1392.8	916.3	0	0	0
4	Priestley ,L (Liam)	3	1	-141.7	1	1	425	2	0	-425	0	0	0
4	Priestley ,L (Liam)	3	1274.9	1133.2	1	1416.5	1699.9	2	1243.1	849.9	0	0	0
5	Braaf ,J (Jordan)	3	0	-425	0	0	0	3	0	-425	0	0	0
5	Braaf ,J (Jordan)	3	1414.8	989.8	0	0	0	3	1370.5	989.8	0	0	0
6	Shapiro ,M (Matthew)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Shapiro ,M (Matthew)	2	1550.1	1125.1	2	1519.8	1125.1	0	0	0	0	0	0
7	Louis ,C (Carl)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	Louis ,C (Carl)	2	1238.3	813.3	2	1241.4	813.3	0	0	0	0	0	0
8	Rall ,L (Lian)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
8	Rall ,L (Lian)	2	1268.4	1055.9	2	1246.2	1055.9	0	0	0	0	0	0
9	Sihamba ,S (Somila)	2	1	0	2	1	0	0	0	0	0	0	0
9	Sihamba ,S (Somila)	2	1297.1	1297.1	2	1320.4	1297.1	0	0	0	0	0	0
10	Roberts ,E (Ethan)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
10	Roberts ,E (Ethan)	2	1195.8	983.3	2	1192.4	983.3	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

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PLAYER PAGE

Personal

Sher, J (Jonah)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms