Chess South Africa Ratings Database

PLAYER PAGE

Personal

Joubert, E (Ethan)

Chess SA id

1100150162

FIDE id

Date of birth

2010-07-26 (U16)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-06-08

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1306.2

Item	Main	Standard	Rapid	Blitz
Rating	1382.2	1371.2	1366.7	1200
Raw rating	1382.2	1371.2	1366.7	1200
Weighted rating	1364.7	1336.2	1366.5	1200
Weighted performance	1322.5	1315.9	1101.3	0
Floor	899.7	886.4	897.2	700
K-factor	40	36	36	36
Min/Max rating change allowed	127.9	129.9	130.8	165.8
Highest rating	1399.7 2024-10-01	1401.3 2024-09-01	1465.8 2023-05-01	1200 2018-10-01
Highest raw rating	1399.7 2024-10-01	1386.4 2024-10-01	1397.2 2024-06-01	1200 2024-03-01
Highest weighted rating	1359.4 2025-08-01	1323.7 2025-08-01	1366.7 2025-08-01	1200 2018-10-01
Highest weighted performance	1373.5 2024-02-01	1401.3 2024-09-01	1465.8 2023-05-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1382.2	1371.2	1366.7	1200
Analysis
Rating	1382.2	1371.2	1366.7	1200
Raw rating	1382.2	1371.2	1366.7	1200
Weighted rating	1364.7	1336.2	1366.5
Weighted performance	1322.5	1315.9	1101.3
K-factor	40	36	36	36
Floor	899.7	886.4	897.2	700
Max/Min rating change allowed	127.9	129.9	130.8	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	1382.2	1371.2	1366.7	1200
New weighted rating	1366.8	1341.5	1366.2	1200
New weighted performance	1322	1315.5	1100.8	0
Temp new rating	1382.2	1371.2	1366.7	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1382.2	1371.2	1366.7	1200
New K-factor	40	36	36	36
New floor	899.7	886.4	897.2	700

Item	Main	Standard	Rapid
	0	0	0
	22	22	0
	41	30	11
	51	12	39
	0	0	0
	0	0	0
History	114	64	50

Games since
	Main 74	Standard 52		Rapid 22		Blitz 0
Gender	Male
Age group	U16
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	2359		724		313
Male	1927		556		249
U16	363		121		40
U16 Male	278		85		29
Standard
	RSA		Province		Region
Overall	2360		658		287
Male	1916		495		221
U16	373		119		42
U16 Male	290		87		31
Rapid
	RSA		Province		Region
Overall	668		347		157
Male	561		289		141
U16	103		59		24
U16 Male	77		45		21
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	22	13.5	61.36	96.6	1315	1411.6
Standard	22	13.5	61.36	96.6	1315	1411.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	114	70	61.4	96.9	1261.4	1358.3
Standard	64	36.5	57.03	59.8	1289.3	1349.1
Rapid	50	33.5	67	144.5	1225.5	1370
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1382.2	1371.2	1366.7	1200
2025-09-01	1382.2	1371.2	1366.7	1200
2025-08-01	1382.2	1371.2	1366.7	1200
2025-07-01	1382.2	1371.2	1366.6	1200
2025-06-01	1374.8	1361.4	1366.5	1200
2025-05-01	1374.8	1361.4	1366	1200
2025-04-01	1374.8	1361.4	1365.3	1200
2025-03-01	1358.1	1342.8	1364.2	1200
2025-02-01	1337	1315.5	1362.1	1200
2025-01-01	1329.3	1315.5	1352.9	1200
2024-12-01	1329.3	1315.5	1352.9	1200
2024-11-01	1342.4	1320.2	1352.9	1200
2024-10-01	1399.7	1386.4	1352.9	1200
2024-09-01	1379.4	1343.7	1352.9	1200
2024-08-01	1379.4	1343.7	1352.9	1200
2024-07-01	1348.4	1254.4	1397.2	1200
2024-06-01	1348.4	1254.4	1397.2	1200
2024-08-01	1340	1254.4	1389.6	1200
2024-04-01	1340	1254.4	1389.6	1200
2024-03-01	1350.5	1240.4	1389.6	1200
2024-02-01	1332.3	1196.8	1389.6	1200
2024-01-01	1332.3	1196.8	1389.6	1200
2023-12-01	1332.3	1196.8	1389.6	1200
2023-11-01	1301	1196.8	1350.4	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	Helderberg Chess Club Open 2025 (B)	2025-06-07	2025-06-08	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
2	Cape Town Chess Junior League 2025 (U16)	2025-05-10	2025-05-31	Standard	Cape Town (WCT)	5	4	3.5	Yes	Analysis
3	CT Metro Schools Individual Closed 2025 (U15 Open)	2025-03-01	2025-03-02	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
4	CT Metro District East Schools Chess Individuals Trials 2025 (U15 Boys)	2025-02-01	2025-02-02	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Helderberg Chess Club Open 2025 (B)	2025-06-07	2025-06-08	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
2	Cape Town Chess Junior League 2025 (U16)	2025-05-10	2025-05-31	Standard	Cape Town (WCT)	5	4	3.5	Yes	Analysis
3	CT Metro Schools Individual Closed 2025 (U15 Open)	2025-03-01	2025-03-02	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
4	CT Metro District East Schools Chess Individuals Trials 2025 (U15 Boys)	2025-02-01	2025-02-02	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
5	Helderberg Chess Club Open 2024 (B)	2024-11-09	2024-11-10	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
6	Western Cape Club Championship 2024 (Tier 2)	2024-10-25	2024-10-27	Standard	Cape Town (WCT)	5	4	0	Yes	Analysis
7	Western Cape Top Schools Championship 2024 (U15 Mixed)	2024-08-30	2024-09-01	Standard	Eden (WEG)	6	4	3	Yes	Analysis
8	CT Metro District East Top Schools Chess 2024 (U15 Mixed)	2024-07-27	2024-07-28	Standard	Cape Town (WCT)	7	6	6	Yes	Analysis
9	Curro Durbanville Chess Rapid Open 2024 (Intermediate)	2024-07-13	2024-07-13	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
10	Cape Town Junior League Finals 2024 (U15 Open A)	2024-05-18	2024-05-18	Rapid	Cape Town (WCT)	5	5	4	Yes	Analysis
11	Cape Town Junior League Qualifier 2024 (U15 Open)	2024-04-06	2024-04-06	Rapid	Cape Town (WCT)	6	0	0	No	Analysis
12	Cape Town Metro Schools Chess Closed Individuals 2024 (U15 Boys)	2024-03-02	2024-03-03	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
13	CT District East Schools Chess Individuals Trails 2024 (U15 Boys)	2024-02-03	2024-02-03	Standard	Cape Town (WCT)	5	4	3	Yes	Analysis
14	Gordons Bay Primary Chess Championship 2023 (U13 Mixed)	2023-12-09	2023-12-09	Rapid	Cape Town (WCT)	5	5	4	Yes	Analysis
15	Grant East Primary School Invitational Chess Tournament 2023 (U13 Mixed)	2023-11-04	2023-11-04	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis
16	Cape Town Junior Chess League Finals 2023 (U16A)	2023-09-16	2023-09-16	Rapid	Cape Town (WCT)	7	6	3	Yes	Analysis
17	Cape Town Junior Chess League - Round 1 2023 (U16B)	2023-07-22	2023-07-22	Rapid	Cape Town (WCT)	7	6	5	Yes	Analysis
18	WP Closed 2023 (U14)	2023-06-16	2023-06-17	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
19	Cape Town Junior League 2nd Qualifier 2023 (U16)	2023-06-03	2023-06-03	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
20	Rhenish Primary Tournament 2023 (U14)	2023-05-13	2023-05-13	Rapid	Cape Winelands (WCW)	6	5	4.5	Yes	Analysis
21	Mary-Anne Bartels Chess Tournament 2023 (U13)	2023-02-21	2023-02-21	Rapid	Cape Town (WCT)	5	5	3	Yes	Analysis
22	District East Schools Chess Individual Trials 2023 (U13 Boys)	2023-02-03	2023-02-04	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis

#	Games	Start				End
1	8	Tournament Curro Durbanville Chess Rapid Open 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-07-13	rnd 6	type Rapid	result 1	date 2024-08-30	rnd 2	type Standard	result 1
		Opponent Venter, J (Jacques)				Opponent Toerien, W (Wd)
2	7	Tournament Mary-Anne Bartels Chess Tournament 2023				Tournament Rhenish Primary Tournament 2023
		date 2023-02-21	rnd 4	type Rapid	result 1	date 2023-05-13	rnd 5	type Rapid	result 1
		Opponent Nkani, J (John)				Opponent Van Der Spuy, A (Albert)
3	6	Tournament Cape Town Junior Chess League - Round 1 2023				Tournament Cape Town Junior Chess League Finals 2023
		date 2023-07-22	rnd 3	type Rapid	result 1	date 2023-09-16	rnd 2	type Rapid	result 1
		Opponent Nyosana, L (Lindokuhle)				Opponent Brown, J (Joshua)

#	Games	Start				End
1	10	Tournament Cape Town Metro Schools Chess Closed Individuals 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-03-03	rnd 4	type Standard	result 1	date 2024-08-30	rnd 2	type Standard	result 1
		Opponent Mphuthi, U (U-Nae)				Opponent Toerien, W (Wd)
2	5	Tournament CT Metro Schools Individual Closed 2025				Tournament Cape Town Chess Junior League 2025
		date 2025-03-02	rnd 6	type Standard	result 1	date 2025-05-31	rnd 5	type Standard	result 1
		Opponent Schultz, O (Oliver)				Opponent Mputing, A (Asiphile)
3	3	Tournament WP Closed 2023				Tournament CT District East Schools Chess Individuals Trails 2024
		date 2023-06-17	rnd 6	type Standard	result 1	date 2024-02-03	rnd 2	type Standard	result 1
		Opponent Mputing, A (Asiphile)				Opponent Ziki, M (Melvin)

#	Games	Start				End
1	7	Tournament Mary-Anne Bartels Chess Tournament 2023				Tournament Rhenish Primary Tournament 2023
		date 2023-02-21	rnd 4	type Rapid	result 1	date 2023-05-13	rnd 5	type Rapid	result 1
		Opponent Nkani, J (John)				Opponent Van Der Spuy, A (Albert)
2	6	Tournament Cape Town Junior Chess League - Round 1 2023				Tournament Cape Town Junior Chess League Finals 2023
		date 2023-07-22	rnd 3	type Rapid	result 1	date 2023-09-16	rnd 2	type Rapid	result 1
		Opponent Nyosana, L (Lindokuhle)				Opponent Brown, J (Joshua)
3	5	Tournament Grant East Primary School Invitational Chess Tournament 2023				Tournament Gordons Bay Primary Chess Championship 2023
		date 2023-11-04	rnd 5	type Rapid	result 1	date 2023-12-09	rnd 3	type Rapid	result 1
		Opponent Abrahams, A (Alvin Ernest)				Opponent Williams, E (Enrico)

No games found.

#	Games	Start				End

#	Games	Start				End
1	8	Tournament Curro Durbanville Chess Rapid Open 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-07-13	rnd 6	type Rapid	result 1	date 2024-08-30	rnd 2	type Standard	result 1
		Opponent Venter, J (Jacques)				Opponent Toerien, W (Wd)
2	6	Tournament Cape Town Junior Chess League - Round 1 2023				Tournament Cape Town Junior Chess League Finals 2023
		date 2023-07-22	rnd 3	type Rapid	result 1	date 2023-09-16	rnd 2	type Rapid	result 1
		Opponent Nyosana, L (Lindokuhle)				Opponent Brown, J (Joshua)
3	5	Tournament Grant East Primary School Invitational Chess Tournament 2023				Tournament Gordons Bay Primary Chess Championship 2023
		date 2023-11-04	rnd 5	type Rapid	result 1	date 2023-12-09	rnd 3	type Rapid	result 1
		Opponent Abrahams, A (Alvin Ernest)				Opponent Williams, E (Enrico)

#	Games	Start				End
1	7	Tournament CT Metro District East Top Schools Chess 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-07-27	rnd 1	type Standard	result 1	date 2024-08-30	rnd 2	type Standard	result 1
		Opponent Asemahle, Z (Zombe)				Opponent Toerien, W (Wd)
2	3	Tournament Cape Town Chess Junior League 2025				Tournament Cape Town Chess Junior League 2025
		date 2025-05-10	rnd 3	type Standard	result 1	date 2025-05-31	rnd 5	type Standard	result 1
		Opponent Sinclair, D (Dino)				Opponent Mputing, A (Asiphile)
3	3	Tournament WP Closed 2023				Tournament CT District East Schools Chess Individuals Trails 2024
		date 2023-06-17	rnd 6	type Standard	result 1	date 2024-02-03	rnd 2	type Standard	result 1
		Opponent Mputing, A (Asiphile)				Opponent Ziki, M (Melvin)

#	Games	Start				End
1	6	Tournament Cape Town Junior Chess League - Round 1 2023				Tournament Cape Town Junior Chess League Finals 2023
		date 2023-07-22	rnd 3	type Rapid	result 1	date 2023-09-16	rnd 2	type Rapid	result 1
		Opponent Nyosana, L (Lindokuhle)				Opponent Brown, J (Joshua)
2	5	Tournament Grant East Primary School Invitational Chess Tournament 2023				Tournament Gordons Bay Primary Chess Championship 2023
		date 2023-11-04	rnd 5	type Rapid	result 1	date 2023-12-09	rnd 3	type Rapid	result 1
		Opponent Abrahams, A (Alvin Ernest)				Opponent Williams, E (Enrico)
3	4	Tournament Rhenish Primary Tournament 2023				Tournament Rhenish Primary Tournament 2023
		date 2023-05-13	rnd 2	type Rapid	result 1	date 2023-05-13	rnd 5	type Rapid	result 1
		Opponent Strout, T (Tristan)				Opponent Van Der Spuy, A (Albert)

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	Van Der Spuy ,A (Albert)	3	1	-141.7	2	0	-425	1	1	425	0	0	0
1	Van Der Spuy ,A (Albert)	3	1416.5	1274.8	2	1387.6	991.5	1	1366.8	1841.5	0	0	0
2	Mputing ,A (Asiphile)	2	2	425	2	2	425	0	0	0	0	0	0
2	Mputing ,A (Asiphile)	2	1160.2	1585.2	2	1130.6	1585.2	0	0	0	0	0	0
3	Janse Van Rensburg ,D (Daniel)	2	2	425	1	1	425	1	1	425	0	0	0
3	Janse Van Rensburg ,D (Daniel)	2	1271.7	1696.7	1	1328.7	1696.7	1	1200	1696.7	0	0	0
4	Van Wyk ,C (Cayllum)	2	0	-425	1	0	-425	1	0	-425	0	0	0
4	Van Wyk ,C (Cayllum)	2	1202.2	777.2	1	1200	777.2	1	1216.4	777.2	0	0	0
5	Meyer ,M (Matthew)	2	0	-425	1	0	-425	1	0	-425	0	0	0
5	Meyer ,M (Matthew)	2	1618.3	1193.3	1	1555.6	1193.3	1	1577.7	1193.3	0	0	0
6	House ,J (Josh)	2	1	0	0	0	0	2	1	0	0	0	0
6	House ,J (Josh)	2	1171.6	1171.6	0	0	0	2	1164.4	1171.6	0	0	0
7	Brown ,J (Joshua)	2	2	425	0	0	0	2	2	425	0	0	0
7	Brown ,J (Joshua)	2	1200.4	1625.4	0	0	0	2	1198.4	1625.4	0	0	0
8	Schultz ,O (Oliver)	1	1	425	1	1	425	0	0	0	0	0	0
8	Schultz ,O (Oliver)	1	1375.3	1800.3	1	1373.9	1800.3	0	0	0	0	0	0
9	Kamiro ,K (Knowledge)	1	1	425	1	1	425	0	0	0	0	0	0
9	Kamiro ,K (Knowledge)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Ellappa ,J (Judah)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Ellappa ,J (Judah)	1	1432.6	1007.6	1	1377.2	1007.6	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Joubert, E (Ethan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms