Chess South Africa Ratings Database

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Personal

Viviers, W (Wiaan)

Chess SA id

1120136526

FIDE id

Date of birth

2012-01-04 (U14)

Gender

Male

Region

Sedibeng (GSV)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-08-02

Personal details last changed

1900-01-01

Junior GPX Games

49.5

Junior GPX Points

1241.9

Item	Main	Standard	Rapid	Blitz
Rating	1308.9	1303.3	1220.9	1200
Raw rating	1308.9	1303.3	1220.9	1200
Weighted rating	1303.4	1300.7	1202	1200
Weighted performance	1246.8	1232.7	0	0
Floor	878.1	878.4	720.9	700
K-factor	36	36	36	36
Min/Max rating change allowed	142	143.1	161	165.8
Highest rating	1392.4 2024-04-01	1392.7 2024-04-01	1220.9 2025-05-05	1200 2018-10-01
Highest raw rating	1378.1 2024-05-01	1378.4 2024-05-01	1220.9 2025-05-05	1200 2024-02-01
Highest weighted rating	1301.6 2025-09-01	1299.1 2025-09-01	1220.9 2018-10-01	1200 2018-10-01
Highest weighted performance	1392.4 2024-04-01	1392.7 2024-04-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1308.9	1303.3	1220.9	1200
Analysis
Rating	1308.9	1303.3	1220.9	1200
Raw rating	1308.9	1303.3	1220.9	1200
Weighted rating	1303.4	1300.7	1202
Weighted performance	1246.8	1232.7	0
K-factor	36	36	36	36
Floor	878.1	878.4	720.9	700
Max/Min rating change allowed	142	143.1	161	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	1308.9	1303.3	1220.9	1200
New weighted rating	1304.9	1302	1203.7	1200
New weighted performance	1246.4	1232.3	0	0
Temp new rating	1308.9	1303.3	1220.9	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1308.9	1303.3	1220.9	1200
New K-factor	36	36	36	36
New floor	878.1	878.4	720.9	700

Item	Main	Standard	Rapid
	0	0	0
	30	25	5
	82	78	4
	70	70	0
	25	25	0
	0	0	0
History	207	198	9

Games since
	Main 122	Standard 113		Rapid 9		Blitz 0
Gender	Male
Age group	U14
Region	Sedibeng (GSV)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	3104		1036		117
Male	2454		819		96
U14	575		181		28
U14 Male	424		136		22
Standard
	RSA		Province		Region
Overall	3029		1086		128
Male	2389		863		103
U14	571		191		30
U14 Male	411		142		23
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	30	16	53.33	28.3	1268.2	1296.6
Standard	25	13	52	17	1264.6	1281.6
Rapid	5	3	60	85	1286.4	1371.4
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	207	104	50.24	2.1	1258.4	1260.4
Standard	198	101	51.01	8.6	1253.6	1262.2
Rapid	9	3	33.33	-141.7	1363.7	1222
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1308.9	1303.3	1220.9	1200
2025-09-01	1308.9	1303.3	1220.9	1200
2025-08-01	1307.6	1299.8	1220.9	1200
2025-07-01	1307.6	1299.8	1220.9	1200
2025-06-01	1307.6	1299.8	1220.9	1200
2025-05-01	1302.4	1292.3	1220.9	1200
2025-04-01	1291.2	1290.7	1190.3	1200
2025-03-01	1290.5	1290.1	1190.3	1200
2025-02-01	1288.7	1290	1187.6	1200
2025-01-01	1267.5	1287.8	1146	1200
2024-12-01	1342.6	1374.9	1146	1200
2024-11-01	1375.4	1374.9	1200	1200
2024-10-01	1265.5	1249.3	1200	1200
2024-09-01	1286.4	1272.3	1200	1200
2024-08-01	1278	1259.3	1200	1200
2024-07-01	1367.3	1368.7	1200	1200
2024-06-01	1378.1	1378.4	1200	1200
2024-08-01	1378.1	1378.4	1200	1200
2024-04-01	1327.8	1332.9	1200	1200
2024-03-01	1175.2	1165.1	1200	1200
2024-02-01	1175.2	1165.1	1200	1200
2024-01-01	1210.7	1201.1	1200	1200
2023-12-01	1210.7	1201.1	1200	1200
2023-11-01	1210.7	1201.1	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	Laerskool Eligwa Open 20 Sept 2025 (D)	2025-09-20	2025-09-20	Standard	Sedibeng (GSV)	5	0	0	No	Analysis
2	GDE (D7) Sedibeng East Schools 2025 (U13)	2025-08-02	2025-08-02	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
3	GDE Sedibeng East Schools - D7 Individuals 24 May 2025 (U13 Boys)	2025-05-24	2025-05-24	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
4	HS Overvaal Rapid 12 Apr 2025 (D)	2025-04-12	2025-04-12	Rapid	Sedibeng (GSV)	5	5	3	Yes	Analysis
5	Hoerskool Drie Riviere Open 08 March 2025 (D)	2025-03-08	2025-03-08	Standard	Sedibeng (GSV)	5	5	2.5	Yes	Analysis
6	Laer Volkskool Open 15 Feb 2025 (D)	2025-02-15	2025-02-15	Standard	Sedibeng (GSV)	5	5	2.5	Yes	Analysis
7	Afrikaans High School Open 08 Feb 2025 (D)	2025-02-08	2025-02-08	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Laerskool Eligwa Open 20 Sept 2025 (D)	2025-09-20	2025-09-20	Standard	Sedibeng (GSV)	5	0	0	No	Analysis
2	GDE (D7) Sedibeng East Schools 2025 (U13)	2025-08-02	2025-08-02	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
3	GDE Sedibeng East Schools - D7 Individuals 24 May 2025 (U13 Boys)	2025-05-24	2025-05-24	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
4	HS Overvaal Rapid 12 Apr 2025 (D)	2025-04-12	2025-04-12	Rapid	Sedibeng (GSV)	5	5	3	Yes	Analysis
5	Hoerskool Drie Riviere Open 08 March 2025 (D)	2025-03-08	2025-03-08	Standard	Sedibeng (GSV)	5	5	2.5	Yes	Analysis
6	Laer Volkskool Open 15 Feb 2025 (D)	2025-02-15	2025-02-15	Standard	Sedibeng (GSV)	5	5	2.5	Yes	Analysis
7	Afrikaans High School Open 08 Feb 2025 (D)	2025-02-08	2025-02-08	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
8	Gauteng Inter-Region at UJ 2024 (U14 Open)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	0	Yes	Analysis
9	Laerskool Midvaal Rapid 16 Nov 2024 (C)	2024-11-16	2024-11-16	Rapid	Sedibeng (GSV)	5	4	0	Yes	Analysis
10	Fonteine Open 2024 (D)	2024-10-19	2024-10-19	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
11	NWU Vaal Chess Open 12 Oct 2024 (D)	2024-10-12	2024-10-12	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
12	Gauteng Top Schools 2024 (U13 Open)	2024-10-04	2024-10-04	Standard	Ekurhuleni (GE)	5	5	3.5	Yes	Analysis
13	Sedibeng Chess Open 07 Sept 24 (D)	2024-09-07	2024-09-07	Standard	Sedibeng (GSV)	5	4	1	Yes	Analysis
14	Sedibeng East D7 Teams Trials 2024 (U13)	2024-08-03	2024-08-03	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
15	Eureka Open 27 July 2024 (F)	2024-07-27	2024-07-27	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
16	EN Chess Club Winter Open 2024 (C)	2024-06-29	2024-06-29	Standard	Ekurhuleni (GE)	5	4	0	Yes	Analysis
17	AG Visser Open 2024 (D)	2024-06-08	2024-06-08	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
18	Hoerskool Overvaal Chess Open 2024 (D)	2024-04-20	2024-04-20	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
19	Vaalpark Primary Chess Open 2024 (D)	2024-04-13	2024-04-13	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
20	HS Drie Riviere Chess Open Section 2024 (D)	2024-03-09	2024-03-09	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
21	Valia's Open 2024 (E)	2024-03-02	2024-03-02	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
22	NG Kerk Vanderbijlpark Suid 2024 (D)	2024-02-24	2024-02-24	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
23	Laerskool Midvaal Chess Open Section 2024 (D)	2024-02-10	2024-02-10	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
24	2024 Gauteng Inter-Region Chess Championship (U12A)	2024-01-13	2024-01-14	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
25	Queens Gambit Chess Open 2023 (D)	2023-11-25	2023-11-25	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
26	NWU Vaal Open 2023 (D)	2023-10-14	2023-10-14	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
27	Fonteine Chess Open 2023 (E)	2023-09-02	2023-09-02	Standard	Sedibeng (GSV)	5	5	1	Yes	Analysis
28	2023 Gauteng Top Schools (U11 Mixed)	2023-08-18	2023-08-18	Standard	West Rand (GWR)	5	5	1	Yes	Analysis
29	Gauteng D7 Teams 2023 (U11)	2023-08-12	2023-08-12	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
30	Overvaal Ope Jul 2023 (D)	2023-07-22	2023-07-22	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
31	Eureka Open 2023 (F)	2023-07-29	2023-07-29	Standard	Sedibeng (GSV)	5	0	0	No	Analysis
32	Valia's Chess Tournament 2023 (D)	2023-05-06	2023-05-06	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
33	Gauteng Schools D7 2023 (U11 Boys)	2023-05-20	2023-05-20	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
34	Driehoek Open Chess Tournament 2023 (D)	2023-05-13	2023-05-13	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
35	Gauteng Schools Individual Finals 2023 (U11 Boys)	2023-05-26	2023-05-26	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
36	Overvaal Open 2023 (D)	2023-04-15	2023-04-15	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
37	Hoerskool Drie Riviere Open 2023 (D)	2023-03-11	2023-03-11	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
38	Heidelberg Open 2023 (C)	2023-02-04	2023-02-04	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
39	AG Visser Open 2023 (C)	2023-02-18	2023-02-18	Standard	Sedibeng (GSV)	5	0	0	No	Analysis
40	Laerkool Midvaal Chess Open 2023 (D)	2023-01-28	2023-01-28	Standard	Sedibeng (GSV)	5	5	2.5	Yes	Analysis
41	D7 Teams 2022 (U9+U11 Mixed)	2022-08-13	2022-08-13	Standard	Sedibeng (GSV)	5	5	3.5	Yes	Analysis
42	2022 Gauteng Schools Team Championships (U11 Open)	2022-08-27	2022-08-27	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
43	Eureka Open 2022 (G+H)	2022-07-30	2022-07-30	Standard	Sedibeng (GSV)	5	5	2.5	Yes	Analysis
44	Carel`s Chess Open 2022 (D)	2022-03-05	2022-03-05	Standard	Sedibeng (GSV)	5	0	0	No	Analysis
45	Heidelberg Open 2022 (D)	2022-05-02	2022-05-02	Standard	Sedibeng (GSV)	5	5	1.5	Yes	Analysis
46	Midvaal Ope 2022 (D)	2022-01-29	2022-01-29	Standard	Sedibeng (GSV)	5	5	1.5	Yes	Analysis

#	Games	Start				End
1	5	Tournament Laerskool Midvaal Chess Open Section 2024				Tournament NG Kerk Vanderbijlpark Suid 2024
		date 2024-02-10	rnd 4	type Standard	result 1	date 2024-02-24	rnd 3	type Standard	result 1
		Opponent Visser, A (Aidan)				Opponent Visser, A (Aidan)
2	4	Tournament Gauteng Top Schools 2024				Tournament NWU Vaal Chess Open 12 Oct 2024
		date 2024-10-04	rnd 3	type Standard	result 1	date 2024-10-12	rnd 1	type Standard	result 1
		Opponent Macaskill, M (Matthew)				Opponent Nxuwa, T (Thoriso Lukhanye)
3	4	Tournament Gauteng Schools D7 2023				Tournament Gauteng Schools D7 2023
		date 2023-05-20	rnd 1	type Standard	result 1	date 2023-05-20	rnd 4	type Standard	result 1
		Opponent Kambule, A (Aaron)				Opponent Myburgh, V (Vaughn)

#	Games	Start				End
1	5	Tournament Laerskool Midvaal Chess Open Section 2024				Tournament NG Kerk Vanderbijlpark Suid 2024
		date 2024-02-10	rnd 4	type Standard	result 1	date 2024-02-24	rnd 3	type Standard	result 1
		Opponent Visser, A (Aidan)				Opponent Visser, A (Aidan)
2	4	Tournament Gauteng Top Schools 2024				Tournament NWU Vaal Chess Open 12 Oct 2024
		date 2024-10-04	rnd 3	type Standard	result 1	date 2024-10-12	rnd 1	type Standard	result 1
		Opponent Macaskill, M (Matthew)				Opponent Nxuwa, T (Thoriso Lukhanye)
3	4	Tournament Gauteng Schools D7 2023				Tournament Gauteng Schools D7 2023
		date 2023-05-20	rnd 1	type Standard	result 1	date 2023-05-20	rnd 4	type Standard	result 1
		Opponent Kambule, A (Aaron)				Opponent Myburgh, V (Vaughn)

#	Games	Start				End
1	2	Tournament HS Overvaal Rapid 12 Apr 2025				Tournament HS Overvaal Rapid 12 Apr 2025
		date 2025-04-12	rnd 2	type Rapid	result 1	date 2025-04-12	rnd 3	type Rapid	result 1
		Opponent Nagel, A (Abigail)				Opponent Dhlamini, T (Tshepo Xavier)
2	1	Tournament HS Overvaal Rapid 12 Apr 2025				Tournament HS Overvaal Rapid 12 Apr 2025
		date 2025-04-12	rnd 5	type Rapid	result 1	date 2025-04-12	rnd 5	type Rapid	result 1
		Opponent Madisha, S (Sabelo Lungile)				Opponent Madisha, S (Sabelo Lungile)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Laerskool Midvaal Chess Open Section 2024				Tournament NG Kerk Vanderbijlpark Suid 2024
		date 2024-02-10	rnd 4	type Standard	result 1	date 2024-02-24	rnd 3	type Standard	result 1
		Opponent Visser, A (Aidan)				Opponent Visser, A (Aidan)
2	4	Tournament Gauteng Top Schools 2024				Tournament NWU Vaal Chess Open 12 Oct 2024
		date 2024-10-04	rnd 3	type Standard	result 1	date 2024-10-12	rnd 1	type Standard	result 1
		Opponent Macaskill, M (Matthew)				Opponent Nxuwa, T (Thoriso Lukhanye)
3	4	Tournament Gauteng Schools D7 2023				Tournament Gauteng Schools D7 2023
		date 2023-05-20	rnd 1	type Standard	result 1	date 2023-05-20	rnd 4	type Standard	result 1
		Opponent Kambule, A (Aaron)				Opponent Myburgh, V (Vaughn)

#	Games	Start				End
1	5	Tournament Laerskool Midvaal Chess Open Section 2024				Tournament NG Kerk Vanderbijlpark Suid 2024
		date 2024-02-10	rnd 4	type Standard	result 1	date 2024-02-24	rnd 3	type Standard	result 1
		Opponent Visser, A (Aidan)				Opponent Visser, A (Aidan)
2	4	Tournament Gauteng Top Schools 2024				Tournament NWU Vaal Chess Open 12 Oct 2024
		date 2024-10-04	rnd 3	type Standard	result 1	date 2024-10-12	rnd 1	type Standard	result 1
		Opponent Macaskill, M (Matthew)				Opponent Nxuwa, T (Thoriso Lukhanye)
3	4	Tournament Gauteng Schools D7 2023				Tournament Gauteng Schools D7 2023
		date 2023-05-20	rnd 1	type Standard	result 1	date 2023-05-20	rnd 4	type Standard	result 1
		Opponent Kambule, A (Aaron)				Opponent Myburgh, V (Vaughn)

#	Games	Start				End
1	2	Tournament HS Overvaal Rapid 12 Apr 2025				Tournament HS Overvaal Rapid 12 Apr 2025
		date 2025-04-12	rnd 2	type Rapid	result 1	date 2025-04-12	rnd 3	type Rapid	result 1
		Opponent Nagel, A (Abigail)				Opponent Dhlamini, T (Tshepo Xavier)
2	1	Tournament HS Overvaal Rapid 12 Apr 2025				Tournament HS Overvaal Rapid 12 Apr 2025
		date 2025-04-12	rnd 5	type Rapid	result 1	date 2025-04-12	rnd 5	type Rapid	result 1
		Opponent Madisha, S (Sabelo Lungile)				Opponent Madisha, S (Sabelo Lungile)

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	Myburgh ,V (Vaughn)	6	2	-141.7	5	2	-85	1	0	-425	0	0	0
1	Myburgh ,V (Vaughn)	6	1364.1	1222.4	5	1361.6	1279.1	1	1225.6	939.1	0	0	0
2	Sampson ,C (Cadon)	5	3	85	5	3	85	0	0	0	0	0	0
2	Sampson ,C (Cadon)	5	1289.8	1374.8	5	1286.5	1374.8	0	0	0	0	0	0
3	Smith ,MI (Melea Ine)	4	3.5	318.8	4	3.5	318.8	0	0	0	0	0	0
3	Smith ,MI (Melea Ine)	4	1116.6	1435.3	4	1103.1	1435.3	0	0	0	0	0	0
4	Van Der Merwe ,W (Willem)	4	3	212.5	4	3	212.5	0	0	0	0	0	0
4	Van Der Merwe ,W (Willem)	4	1253.8	1466.3	4	1252.7	1466.3	0	0	0	0	0	0
5	Brand ,H (Henko)	4	0	-425	4	0	-425	0	0	0	0	0	0
5	Brand ,H (Henko)	4	1416.6	991.6	4	1422.8	991.6	0	0	0	0	0	0
6	Kruger ,J (Juanika)	4	4	425	4	4	425	0	0	0	0	0	0
6	Kruger ,J (Juanika)	4	1156.9	1581.9	4	1149.7	1581.9	0	0	0	0	0	0
7	Visser ,A (Aidan)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
7	Visser ,A (Aidan)	3	1388.6	1530.3	3	1385.8	1530.3	0	0	0	0	0	0
8	Bezuidenhout ,L (Liam)	3	2.5	283.3	3	2.5	283.3	0	0	0	0	0	0
8	Bezuidenhout ,L (Liam)	3	1197.9	1481.2	3	1196.8	1481.2	0	0	0	0	0	0
9	Radebe ,T (Thato)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
9	Radebe ,T (Thato)	3	1298.8	1157.1	3	1318.1	1157.1	0	0	0	0	0	0
10	Gorrie ,A (Avery)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
10	Gorrie ,A (Avery)	3	1333.6	1475.2	3	1336.9	1475.2	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Viviers, W (Wiaan)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms