Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Ross, E (Ezra)

Chess SA id

1040153930

FIDE id

Date of birth

2004-10-24 (Adult)

Gender

Male

Region

Lejweleputswa (FLW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-07-19

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1270.4	1279.2	1200	1199.3
Raw rating	1270.4	1279.2	1200	1197.8
Weighted rating	1269.8	1278.5	1200	1199.3
Weighted performance	1139.8	1180.7	0	0
Floor	795.5	808.5	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	150	148.1	165.8	166.3
Highest rating	1308.4 2024-09-01	1308.5 2025-03-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1295.5 2025-03-01	1308.5 2025-03-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1266.1 2025-08-01	1274.5 2025-08-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1308.4 2024-09-01	1306.7 2024-09-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0.3	0.3	0	-0.1
New rating	1270.7	1279.4	1200	1199.2
Analysis
Rating	1270.4	1279.2	1200	1199.3
Raw rating	1270.4	1279.2	1200	1197.8
Weighted rating	1269.8	1278.5	1200
Weighted performance	1139.8	1180.7	0
K-factor	36	36	36	36
Floor	795.5	808.5	700	700
Max/Min rating change allowed	150	148.1	165.8	166.3
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	1270.4	1279.2	1200	1197.8
New weighted rating	1270.7	1279.4	1200	1199.2
New weighted performance	1132.7	1173.2	0	0
Temp new rating	1270.7	1279.4	1200	1199.2
Temp new rating +/-	0.3	0.3	0	-0.1
Final new rating +/-	0.3	0.3	0	-0.1
New rating	1270.7	1279.4	1200	1199.2
New K-factor	36	36	36	36
New floor	795.5	808.5	700	700

Item	Main	Standard	Blitz
	0	0	0
	23	14	9
	9	9	0
	9	9	0
	0	0	0
	0	0	0
History	41	32	9

Games since
	Main 32	Standard 23		Rapid 0		Blitz 9
Gender	Male
Age group	Adult
Region	Lejweleputswa (FLW)
Province	Free State (FS)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult 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	23	10.5	45.65	-37	1297	1260.1
Standard	14	6.5	46.43	-30.4	1315	1284.7
Rapid	0	0	0	0	0	0
Blitz	9	4	44.44	-47.2	1269	1221.8
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	41	20	48.78	-10.4	1306.8	1296.5
Standard	32	16	50	0	1317.5	1317.5
Rapid	0	0	0	0	0	0
Blitz	9	4	44.44	-47.2	1269	1221.8

Date	Main	Standard	Rapid	Blitz
2025-11-01	1270.4	1279.2	1200	1197.8
2025-09-30	1270.4	1279.2	1200	1197.8
2025-09-01	1270.4	1279.2	1200	1197.8
2025-08-01	1270.4	1279.2	1200	1197.8
2025-07-01	1274.2	1279.2	1200	1200
2025-06-01	1274.2	1279.2	1200	1200
2025-05-01	1291.3	1301.2	1200	1200
2025-04-01	1295.5	1308.5	1200	1200
2025-03-01	1295.5	1308.5	1200	1200
2025-02-01	1274.3	1285	1200	1200
2025-01-01	1274.3	1285	1200	1200
2024-12-01	1274.3	1285	1200	1200
2024-11-01	1274.3	1285	1200	1200
2024-10-01	1274.3	1285	1200	1200
2024-09-01	1242.9	1249.4	1200	1200
2024-08-01	1242.9	1249.4	1200	1200
2024-07-01	1242.9	1249.4	1200	1200
2024-09-01	1242.9	1249.4	1200	1200
2024-05-01	1242.9	1249.4	1200	1200
2024-04-01	1223.8	1227.8	1200	1200
2024-03-01	1223.8	1227.8	1200	1200
2024-02-01	1223.8	1227.8	1200	1200
2024-01-01	1223.8	1227.8	1200	1200
2023-12-01	1223.8	1227.8	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	Smart Chess Blitz 2025 (Open)	2025-07-19	2025-07-19	Blitz	Mangaung (FMB)	9	9	4	Yes	Analysis
2	Spartan Bishops Championships Elite 2025 (Championship)	2025-05-23	2025-05-25	Standard	Frances Baard (NCF)	5	4	0	Yes	Analysis
3	Lejweleputswa Chess 3rd Qualifying Swiss Open Tournament 2025 (Open)	2025-03-29	2025-03-29	Standard	Lejweleputswa (FLW)	5	5	3	Yes	Analysis
4	HTS Welkom Open Chess Tournament 2025 (B)	2025-02-22	2025-02-22	Standard	Lejweleputswa (FLW)	5	5	3.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Smart Chess Blitz 2025 (Open)	2025-07-19	2025-07-19	Blitz	Mangaung (FMB)	9	9	4	Yes	Analysis
2	Spartan Bishops Championships Elite 2025 (Championship)	2025-05-23	2025-05-25	Standard	Frances Baard (NCF)	5	4	0	Yes	Analysis
3	Lejweleputswa Chess 3rd Qualifying Swiss Open Tournament 2025 (Open)	2025-03-29	2025-03-29	Standard	Lejweleputswa (FLW)	5	5	3	Yes	Analysis
4	HTS Welkom Open Chess Tournament 2025 (B)	2025-02-22	2025-02-22	Standard	Lejweleputswa (FLW)	5	5	3.5	Yes	Analysis
5	Lejweleputswa Closed Chess Championships 2024 (Senior)	2024-09-21	2024-09-21	Standard	Lejweleputswa (FLW)	5	4	2	Yes	Analysis
6	Lejweleputswa 3rd Qualifieng Tournament 2024 (Open)	2024-04-20	2024-04-20	Standard	Lejweleputswa (FLW)	5	5	3	Yes	Analysis
7	Lejweleputswa 4th Qualifying Tournament 2023 (A)	2023-05-26	2023-05-26	Standard	Lejweleputswa (FLW)	5	5	2.5	Yes	Analysis
8	Lejweleputswa 3rd Qualifieng Tournament 2023 (A)	2023-04-22	2023-04-22	Standard	Lejweleputswa (FLW)	5	4	2	Yes	Analysis

#	Games	Start				End
1	5	Tournament Smart Chess Blitz 2025				Tournament Smart Chess Blitz 2025
		date 2025-07-19	rnd 5	type Blitz	result 1	date 2025-07-19	rnd 9	type Blitz	result 1
		Opponent Fouche, PJ (Paul)				Opponent Janse van Vuuren, I (Ivan)
2	3	Tournament HTS Welkom Open Chess Tournament 2025				Tournament Lejweleputswa Chess 3rd Qualifying Swiss Open Tournament 2025
		date 2025-02-22	rnd 4	type Standard	result 1	date 2025-03-29	rnd 1	type Standard	result 1
		Opponent Mosoeunyane, J (Junior)				Opponent Molale, B (Matsie)
3	3	Tournament Lejweleputswa 3rd Qualifieng Tournament 2023				Tournament Lejweleputswa 4th Qualifying Tournament 2023
		date 2023-04-22	rnd 5	type Standard	result 1	date 2023-05-26	rnd 2	type Standard	result 1
		Opponent Michalakis, G (Gina)				Opponent Phakoe, L (Lehlohonolo)

#	Games	Start				End
1	3	Tournament HTS Welkom Open Chess Tournament 2025				Tournament Lejweleputswa Chess 3rd Qualifying Swiss Open Tournament 2025
		date 2025-02-22	rnd 4	type Standard	result 1	date 2025-03-29	rnd 1	type Standard	result 1
		Opponent Mosoeunyane, J (Junior)				Opponent Molale, B (Matsie)
2	3	Tournament Lejweleputswa 3rd Qualifieng Tournament 2023				Tournament Lejweleputswa 4th Qualifying Tournament 2023
		date 2023-04-22	rnd 5	type Standard	result 1	date 2023-05-26	rnd 2	type Standard	result 1
		Opponent Michalakis, G (Gina)				Opponent Phakoe, L (Lehlohonolo)
3	2	Tournament HTS Welkom Open Chess Tournament 2025				Tournament HTS Welkom Open Chess Tournament 2025
		date 2025-02-22	rnd 1	type Standard	result 1	date 2025-02-22	rnd 2	type Standard	result 0.5
		Opponent Mohohlo, L (Love-Jadis)				Opponent Michalakis, S (Stylianos)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Smart Chess Blitz 2025				Tournament Smart Chess Blitz 2025
		date 2025-07-19	rnd 5	type Blitz	result 1	date 2025-07-19	rnd 9	type Blitz	result 1
		Opponent Fouche, PJ (Paul)				Opponent Janse van Vuuren, I (Ivan)

#	Games	Start				End
1	3	Tournament HTS Welkom Open Chess Tournament 2025				Tournament Lejweleputswa Chess 3rd Qualifying Swiss Open Tournament 2025
		date 2025-02-22	rnd 4	type Standard	result 1	date 2025-03-29	rnd 1	type Standard	result 1
		Opponent Mosoeunyane, J (Junior)				Opponent Molale, B (Matsie)
2	2	Tournament Smart Chess Blitz 2025				Tournament Smart Chess Blitz 2025
		date 2025-07-19	rnd 8	type Blitz	result 1	date 2025-07-19	rnd 9	type Blitz	result 1
		Opponent Du Toit, L (Liane')				Opponent Janse van Vuuren, I (Ivan)
3	2	Tournament Lejweleputswa Closed Chess Championships 2024				Tournament Lejweleputswa Closed Chess Championships 2024
		date 2024-09-21	rnd 3	type Standard	result 1	date 2024-09-21	rnd 4	type Standard	result 1
		Opponent Seutloali, T (Thabiso)				Opponent Rode, CM (Christoph)

#	Games	Start				End
1	3	Tournament HTS Welkom Open Chess Tournament 2025				Tournament Lejweleputswa Chess 3rd Qualifying Swiss Open Tournament 2025
		date 2025-02-22	rnd 4	type Standard	result 1	date 2025-03-29	rnd 1	type Standard	result 1
		Opponent Mosoeunyane, J (Junior)				Opponent Molale, B (Matsie)
2	2	Tournament Lejweleputswa Closed Chess Championships 2024				Tournament Lejweleputswa Closed Chess Championships 2024
		date 2024-09-21	rnd 3	type Standard	result 1	date 2024-09-21	rnd 4	type Standard	result 1
		Opponent Seutloali, T (Thabiso)				Opponent Rode, CM (Christoph)
3	2	Tournament Lejweleputswa 3rd Qualifieng Tournament 2024				Tournament Lejweleputswa 3rd Qualifieng Tournament 2024
		date 2024-04-20	rnd 4	type Standard	result 1	date 2024-04-20	rnd 5	type Standard	result 1
		Opponent Qinisa, L (Lunga)				Opponent Taaibos, B (Brain)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Smart Chess Blitz 2025				Tournament Smart Chess Blitz 2025
		date 2025-07-19	rnd 8	type Blitz	result 1	date 2025-07-19	rnd 9	type Blitz	result 1
		Opponent Du Toit, L (Liane')				Opponent Janse van Vuuren, I (Ivan)
2	1	Tournament Smart Chess Blitz 2025				Tournament Smart Chess Blitz 2025
		date 2025-07-19	rnd 5	type Blitz	result 1	date 2025-07-19	rnd 5	type Blitz	result 1
		Opponent Fouche, PJ (Paul)				Opponent Fouche, PJ (Paul)

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	Pillay ,D (Diveshan)	3	0	-425	3	0	-425	0	0	0	0	0	0
1	Pillay ,D (Diveshan)	3	1549.3	1124.3	3	1563.8	1124.3	0	0	0	0	0	0
2	Rode ,CM (Christoph Maritz)	2	1	0	2	1	0	0	0	0	0	0	0
2	Rode ,CM (Christoph Maritz)	2	1466.2	1466.2	2	1474.6	1466.2	0	0	0	0	0	0
3	Seutloali ,T (Thabiso)	1	1	425	1	1	425	0	0	0	0	0	0
3	Seutloali ,T (Thabiso)	1	1285.9	1710.9	1	1276.1	1710.9	0	0	0	0	0	0
4	De Welzim ,S (Seth)	1	1	425	1	1	425	0	0	0	0	0	0
4	De Welzim ,S (Seth)	1	1209.9	1634.9	1	1215.8	1634.9	0	0	0	0	0	0
5	Molale ,B (Matsie)	1	1	425	1	1	425	0	0	0	0	0	0
5	Molale ,B (Matsie)	1	873	1298	1	873	1298	0	0	0	0	0	0
6	Michalakis ,K (Kiriakos)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Michalakis ,K (Kiriakos)	1	1774.6	1349.6	1	1782.5	1349.6	0	0	0	0	0	0
7	Baraza ,Y (Yolo)	1	1	425	1	1	425	0	0	0	0	0	0
7	Baraza ,Y (Yolo)	1	1201.3	1626.3	1	1201.6	1626.3	0	0	0	0	0	0
8	Sefotlhelo ,O (Omatlaotlhe)	1	1	425	1	1	425	0	0	0	0	0	0
8	Sefotlhelo ,O (Omatlaotlhe)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	Qinisa ,L (Lunga)	1	1	425	1	1	425	0	0	0	0	0	0
9	Qinisa ,L (Lunga)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Mohohlo ,L (Love-Jadis)	1	1	425	1	1	425	0	0	0	0	0	0
10	Mohohlo ,L (Love-Jadis)	1	1185.8	1610.8	1	1187.4	1610.8	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Van Der Ross, E (Ezra)

Ratings

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Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms