Chess South Africa Ratings Database

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Personal

Vorster, W (Wian)

Chess SA id

1120323200

FIDE id

Date of birth

2012-06-15 (U14)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-18

Personal details last changed

1900-01-01

Junior GPX Games

64.3

Junior GPX Points

1279.7

Item	Main	Standard	Rapid	Blitz
Rating	1348.6	1336.2	1313.5	1200
Raw rating	1348.6	1332	1313.5	1200
Weighted rating	1230.2	1230	1215.7	1200
Weighted performance	1330.9	1336.2	0	0
Floor	848.6	833.5	813.5	700
K-factor	36	36	36	36
Min/Max rating change allowed	134.2	137.4	141.1	165.8
Highest rating	1362.1 2025-09-30	1360.2 2025-09-30	1313.5 2025-11-01	1200 2025-08-01
Highest raw rating	1348.6 2025-11-01	1333.5 2025-09-30	1313.5 2025-11-01	1200 2025-08-01
Highest weighted rating	1230.2 2025-11-01	1230 2025-11-01	1215.7 2025-11-01	1200 2025-08-01
Highest weighted performance	1362.1 2025-09-30	1360.2 2025-09-30	0 1900-01-01	0 1900-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	9.5	-7.1	9.4	0
New rating	1358	1329.1	1322.9	1200
Analysis
Rating	1348.6	1336.2	1313.5	1200
Raw rating	1348.6	1332	1313.5	1200
Weighted rating	1230.2	1230	1215.7
Weighted performance	1330.9	1336.2	0
K-factor	36	36	36	36
Floor	848.6	833.5	813.5	700
Max/Min rating change allowed	134.2	137.4	141.1	165.8
Games	6	1	5	0
Score	3.5	0	3.5	0
Expected score	3.24	0.08	3.24	0
Score-Expected	0.26	-0.08	0.26	0
Temp raw +/-	9.5	-2.9	9.4	0
Final raw +/-	9.5	-2.9	9.4	0
New raw rating	1358	1329.1	1322.9	1200
New weighted rating	1241.6	1239	1224.9	1200
New weighted performance	1333.1	1328.4	0	0
Temp new rating	1358	1329.1	1322.9	1200
Temp new rating +/-	9.5	-7.1	9.4	0
Final new rating +/-	9.5	-7.1	9.4	0
New rating	1358	1329.1	1322.9	1200
New K-factor	36	36	36	36
New floor	858	833.5	822.9	700

Item	Main	Standard	Rapid
	0	0	0
	70	55	15
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	70	55	15

Games since
	Main 70	Standard 55		Rapid 15		Blitz 0
Gender	Male
Age group	U14
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	2735		951		277
Male	2186		751		225
U14	476		159		43
U14 Male	354		114		29
Standard
	RSA		Province		Region
Overall	2811		1023		285
Male	2248		818		232
U14	498		173		43
U14 Male	363		122		30
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	70	36.5	52.14	18.2	1350.4	1368.6
Standard	55	26.5	48.18	-15.5	1351.7	1336.3
Rapid	15	10	66.67	141.7	1345.3	1487
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	70	36.5	52.14	18.2	1350.4	1368.6
Standard	55	26.5	48.18	-15.5	1351.7	1336.3
Rapid	15	10	66.67	141.7	1345.3	1487
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1348.6	1332	1313.5	1200
2025-09-30	1322.9	1333.5	1259.2	1200
2025-09-01	1301	1301.8	1228.9	1200
2025-08-01	1221.8	1224.6	1200	1200
2025-07-01	1200	1200	1200	1200
2025-06-01	1200	1200	1200	1200
2025-05-01	1200	1200	1200	1200
2025-04-01	1200	1200	1200	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
2024-09-01	1200	1200	1200	1200
2024-05-01	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

Comming soon.

Tournaments

History

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	MCA Year End Rapid 2025 (U14)	2025-11-01	2025-11-01	Rapid	Johannesburg Metro (GJM)	5	5	3.5	Yes	Analysis
2	Chess Power House October Open 2025 (C)	2025-10-25	2025-10-25	Standard	Ekurhuleni (GE)	5	1	0	Yes	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	MCA Year End Rapid 2025 (U14)	2025-11-01	2025-11-01	Rapid	Johannesburg Metro (GJM)	5	5	3.5	Yes	Analysis
2	Chess Power House October Open 2025 (C)	2025-10-25	2025-10-25	Standard	Ekurhuleni (GE)	5	1	0	Yes	Analysis
3	Lardies Open 2025 (B)	2025-10-18	2025-10-18	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
4	Chess Molecules Rapid 2025 (C)	2025-09-20	2025-09-20	Rapid	Ekurhuleni (GE)	5	5	4	Yes	Analysis
5	Bojanala's FIDE On The Orion Express 2025 (Rooks)	2025-10-03	2025-10-05	Standard	Bojanala Platina (NBR)	6	6	3	Yes	Analysis
6	2025 Centurion Chess Open Tournament (C)	2025-09-27	2025-09-27	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
7	Fourth Knight Riders Juniors Open Chess Tournament 2025 (B)	2025-08-31	2025-08-31	Standard	Johannesburg Metro (GJM)	5	4	2	Yes	Analysis
8	GoForChess Junior Chess Championships 2025 (U14+U16)	2025-09-14	2025-09-14	Standard	Johannesburg Metro (GJM)	5	2	0	Yes	Analysis
9	Chess Power House Spring Rapid 2025 (C)	2025-09-21	2025-09-21	Rapid	Ekurhuleni (GE)	5	5	3	Yes	Analysis
10	East Rand Chess Club Open 2025 (C)	2025-08-09	2025-08-09	Standard	Ekurhuleni (GE)	5	4	1.5	Yes	Analysis
11	East Rand Chess Club Open 2025 (C)	2025-08-09	2025-08-09	Standard	Ekurhuleni (GE)	5	4	1.5	Yes	Analysis
12	2025 Alekhine Open (D)	2025-09-06	2025-09-07	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
13	2025 Midstream Open Chess Tournament (D)	2025-08-25	2025-08-25	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
14	Rock n Roll Rapid 2025 (Queens)	2025-08-24	2025-08-24	Rapid	Ekurhuleni (GE)	5	5	3	Yes	Analysis
15	Chess Power House Aug Open 2025 (C)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
16	2025 Menlo Open (U14)	2025-07-26	2025-07-26	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
17	2025 Wynie Robbertse Chess Tournament (D)	2025-07-19	2025-07-19	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
18	South African Open 2025 (U14 Open)	2025-07-03	2025-07-05	Standard	Johannesburg Metro (GJM)	5	0	0	No	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	MCA Year End Rapid 2025 (U14)	2025-11-01	2025-11-01	Rapid	Johannesburg Metro (GJM)	5	5	3.5	Yes	Analysis
2	Chess Power House October Open 2025 (C)	2025-10-25	2025-10-25	Standard	Ekurhuleni (GE)	5	1	0	Yes	Analysis
3	Lardies Open 2025 (B)	2025-10-18	2025-10-18	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
4	Chess Molecules Rapid 2025 (C)	2025-09-20	2025-09-20	Rapid	Ekurhuleni (GE)	5	5	4	Yes	Analysis
5	Bojanala's FIDE On The Orion Express 2025 (Rooks)	2025-10-03	2025-10-05	Standard	Bojanala Platina (NBR)	6	6	3	Yes	Analysis
6	2025 Centurion Chess Open Tournament (C)	2025-09-27	2025-09-27	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
7	Fourth Knight Riders Juniors Open Chess Tournament 2025 (B)	2025-08-31	2025-08-31	Standard	Johannesburg Metro (GJM)	5	4	2	Yes	Analysis
8	GoForChess Junior Chess Championships 2025 (U14+U16)	2025-09-14	2025-09-14	Standard	Johannesburg Metro (GJM)	5	2	0	Yes	Analysis
9	Chess Power House Spring Rapid 2025 (C)	2025-09-21	2025-09-21	Rapid	Ekurhuleni (GE)	5	5	3	Yes	Analysis
10	East Rand Chess Club Open 2025 (C)	2025-08-09	2025-08-09	Standard	Ekurhuleni (GE)	5	4	1.5	Yes	Analysis
11	East Rand Chess Club Open 2025 (C)	2025-08-09	2025-08-09	Standard	Ekurhuleni (GE)	5	4	1.5	Yes	Analysis
12	2025 Alekhine Open (D)	2025-09-06	2025-09-07	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
13	2025 Midstream Open Chess Tournament (D)	2025-08-25	2025-08-25	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
14	Rock n Roll Rapid 2025 (Queens)	2025-08-24	2025-08-24	Rapid	Ekurhuleni (GE)	5	5	3	Yes	Analysis
15	Chess Power House Aug Open 2025 (C)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
16	2025 Menlo Open (U14)	2025-07-26	2025-07-26	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
17	2025 Wynie Robbertse Chess Tournament (D)	2025-07-19	2025-07-19	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
18	South African Open 2025 (U14 Open)	2025-07-03	2025-07-05	Standard	Johannesburg Metro (GJM)	5	0	0	No	Analysis

#	Games	Start				End
1	6	Tournament 2025 Menlo Open				Tournament East Rand Chess Club Open 2025
		date 2025-07-26	rnd 4	type Standard	result 1	date 2025-08-09	rnd 2	type Standard	result 1
		Opponent Human, S (Samuel)				Opponent Monyane, B (Boikanyo)
2	3	Tournament Bojanala's FIDE On The Orion Express 2025				Tournament Lardies Open 2025
		date 2025-10-05	rnd 5	type Standard	result 1	date 2025-10-18	rnd 1	type Standard	result 1
		Opponent Ramaboa, T (Thando)				Opponent Motloba, K (Kaone)
3	3	Tournament Chess Power House Spring Rapid 2025				Tournament Chess Power House Spring Rapid 2025
		date 2025-09-21	rnd 2	type Rapid	result 1	date 2025-09-21	rnd 4	type Rapid	result 1
		Opponent Montshi, A (Azania)				Opponent Mcdonald, G (Gabriel)

#	Games	Start				End
1	4	Tournament 2025 Menlo Open				Tournament East Rand Chess Club Open 2025
		date 2025-07-26	rnd 4	type Standard	result 1	date 2025-08-09	rnd 2	type Standard	result 1
		Opponent Human, S (Samuel)				Opponent Monyane, B (Boikanyo)
2	2	Tournament 2025 Alekhine Open				Tournament 2025 Alekhine Open
		date 2025-09-07	rnd 4	type Standard	result 1	date 2025-09-07	rnd 5	type Standard	result 0.5
		Opponent Rakgatlha, K (Karabo Kgobane)				Opponent Maheshi, R (Rehaan)
3	2	Tournament 2025 Alekhine Open				Tournament 2025 Alekhine Open
		date 2025-09-06	rnd 1	type Standard	result 1	date 2025-09-06	rnd 2	type Standard	result 1
		Opponent Rocher, G (Gideon)				Opponent Masekela, L (Lepato)

#	Games	Start				End
1	2	Tournament Rock n Roll Rapid 2025				Tournament Rock n Roll Rapid 2025
		date 2025-08-24	rnd 1	type Rapid	result 1	date 2025-08-24	rnd 2	type Rapid	result 1
		Opponent Shi, Y (Yuzhe)				Opponent Khumalo, ME (Musawenkosi Ethan)
2	1	Tournament Rock n Roll Rapid 2025				Tournament Rock n Roll Rapid 2025
		date 2025-08-24	rnd 5	type Rapid	result 1	date 2025-08-24	rnd 5	type Rapid	result 1
		Opponent Solundwana, L (Lunje)				Opponent Solundwana, L (Lunje)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament 2025 Alekhine Open				Tournament 2025 Alekhine Open
		date 2025-09-06	rnd 1	type Standard	result 1	date 2025-09-06	rnd 2	type Standard	result 1
		Opponent Rocher, G (Gideon)				Opponent Masekela, L (Lepato)
2	2	Tournament Fourth Knight Riders Juniors Open Chess Tournament 2025				Tournament Fourth Knight Riders Juniors Open Chess Tournament 2025
		date 2025-08-31	rnd 1	type Standard	result 1	date 2025-08-31	rnd 2	type Standard	result 1
		Opponent Mathibe, K (Koketso)				Opponent Motsamai, OB (Ontlametse Bokamoso)
3	2	Tournament 2025 Midstream Open Chess Tournament				Tournament 2025 Midstream Open Chess Tournament
		date 2025-08-25	rnd 3	type Standard	result 1	date 2025-08-25	rnd 4	type Standard	result 1
		Opponent Versfeld, B (Benjin)				Opponent Van der Merwe, M (Michael)

#	Games	Start				End
1	2	Tournament 2025 Alekhine Open				Tournament 2025 Alekhine Open
		date 2025-09-06	rnd 1	type Standard	result 1	date 2025-09-06	rnd 2	type Standard	result 1
		Opponent Rocher, G (Gideon)				Opponent Masekela, L (Lepato)
2	2	Tournament Fourth Knight Riders Juniors Open Chess Tournament 2025				Tournament Fourth Knight Riders Juniors Open Chess Tournament 2025
		date 2025-08-31	rnd 1	type Standard	result 1	date 2025-08-31	rnd 2	type Standard	result 1
		Opponent Mathibe, K (Koketso)				Opponent Motsamai, OB (Ontlametse Bokamoso)
3	2	Tournament 2025 Midstream Open Chess Tournament				Tournament 2025 Midstream Open Chess Tournament
		date 2025-08-25	rnd 3	type Standard	result 1	date 2025-08-25	rnd 4	type Standard	result 1
		Opponent Versfeld, B (Benjin)				Opponent Van der Merwe, M (Michael)

#	Games	Start				End
1	2	Tournament Rock n Roll Rapid 2025				Tournament Rock n Roll Rapid 2025
		date 2025-08-24	rnd 1	type Rapid	result 1	date 2025-08-24	rnd 2	type Rapid	result 1
		Opponent Shi, Y (Yuzhe)				Opponent Khumalo, ME (Musawenkosi Ethan)
2	1	Tournament Rock n Roll Rapid 2025				Tournament Rock n Roll Rapid 2025
		date 2025-08-24	rnd 5	type Rapid	result 1	date 2025-08-24	rnd 5	type Rapid	result 1
		Opponent Solundwana, L (Lunje)				Opponent Solundwana, L (Lunje)

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	Gericke ,L (Logan)	3	2	141.7	2	1	0	1	1	425	0	0	0
1	Gericke ,L (Logan)	3	1398.1	1539.8	2	1388.1	1398.1	1	1254.9	1823.1	0	0	0
2	Monyane ,B (Boikanyo)	2	2	425	2	2	425	0	0	0	0	0	0
2	Monyane ,B (Boikanyo)	2	1245.9	1670.9	2	1250.3	1670.9	0	0	0	0	0	0
3	Crowie ,A (Allegra)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Crowie ,A (Allegra)	2	1615	1190	2	1618.7	1190	0	0	0	0	0	0
4	Mendonca ,N (Nelita)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Mendonca ,N (Nelita)	2	1419.5	994.5	2	1442.2	994.5	0	0	0	0	0	0
5	Mankena ,S (Satvik Ram)	2	0	-425	0	0	0	2	0	-425	0	0	0
5	Mankena ,S (Satvik Ram)	2	1662.8	1237.8	0	0	0	2	1414.9	1237.8	0	0	0
6	Mcdonald ,G (Gabriel)	2	1	0	0	0	0	2	1	0	0	0	0
6	Mcdonald ,G (Gabriel)	2	1239.6	1239.6	0	0	0	2	1220.6	1239.6	0	0	0
7	Matshanga ,I (Inga)	1	1	425	1	1	425	0	0	0	0	0	0
7	Matshanga ,I (Inga)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Rocher ,G (Gideon)	1	1	425	1	1	425	0	0	0	0	0	0
8	Rocher ,G (Gideon)	1	1403.1	1828.1	1	1403.8	1828.1	0	0	0	0	0	0
9	Nel ,J (Jacobus Johannes)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Nel ,J (Jacobus Johannes)	1	1467.3	1042.3	1	1467.5	1042.3	0	0	0	0	0	0
10	Buys ,BR (Bernard Rudolf)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Buys ,BR (Bernard Rudolf)	1	1454	1029	1	1482.5	1029	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Vorster, W (Wian)

Ratings

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Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms