Chess South Africa Ratings Database

PLAYER PAGE

Personal

Viljoen, A (Adrihan)

Chess SA id

1140135534

FIDE id

Date of birth

2014-01-30 (U14)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-04

Personal details last changed

2025-12-10

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1435.1	1384.3	1406.9	1200
Raw rating	1435.1	1384.3	1406.9	1200
Weighted rating	1377.6	1349.2	1347.4	1200
Weighted performance	1339.2	1289.2	1326.3	0
Floor	935.1	884.3	906.9	700
K-factor	32	36	32	36
Min/Max rating change allowed	118.6	127.5	123.5	165.8
Highest rating	1435.1 2025-11-01	1463.4 2022-04-01	1406.9 2025-11-01	1200 2018-10-01
Highest raw rating	1435.1 2025-11-01	1384.3 2025-09-01	1406.9 2025-11-01	1200 2024-02-01
Highest weighted rating	1361.1 2025-11-01	1325.4 2025-09-01	1331.2 2025-11-01	1200 2018-10-01
Highest weighted performance	1390.1 2022-04-01	1463.4 2022-04-01	1356.3 2025-11-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1435.1	1384.3	1406.9	1200
Analysis
Rating	1435.1	1384.3	1406.9	1200
Raw rating	1435.1	1384.3	1406.9	1200
Weighted rating	1377.6	1349.2	1347.4
Weighted performance	1339.2	1289.2	1326.3
K-factor	32	36	32	36
Floor	935.1	884.3	906.9	700
Max/Min rating change allowed	118.6	127.5	123.5	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	1435.1	1384.3	1406.9	1200
New weighted rating	1384.9	1354.1	1354.7	1200
New weighted performance	1330	1280.2	1316.9	0
Temp new rating	1435.1	1384.3	1406.9	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1435.1	1384.3	1406.9	1200
New K-factor	32	36	32	36
New floor	935.1	884.3	906.9	700

Item	Main	Standard	Rapid
	0	0	0
	65	46	19
	80	43	37
	0	0	0
	21	17	4
	5	0	5
History	171	106	65

Games since
	Main 145	Standard 89		Rapid 56		Blitz 0
Gender	M
Age group	U12
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	1820		561		80
M	1509		456		63
U12	222		69		13
U12 M	160		49		9
Standard
	RSA		Province		Region
Overall	2269		623		91
M	1841		480		68
U12	296		84		12
U12 M	218		60		8
Rapid
	RSA		Province		Region
Overall	504		254		38
M	431		219		30
U12	73		43		9
U12 M	59		34		7
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
M	-1		-1		-1
U12	-1		-1		-1
U12 M	-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	65	39	60	85	1336.6	1421.6
Standard	46	26	56.52	55.4	1344.4	1399.8
Rapid	19	13	68.42	156.6	1317.7	1474.2
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	171	101	59.06	77	1273.2	1350.2
Standard	106	60.5	57.08	60.1	1294	1354.1
Rapid	65	40.5	62.31	104.6	1239.3	1343.9
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1435.1	1384.3	1406.9	1200
2025-11-30	1435.1	1384.3	1406.9	1200
2025-11-01	1435.1	1384.3	1406.9	1200
2025-09-30	1429.9	1384.3	1388.6	1200
2025-09-01	1429.9	1384.3	1388.6	1200
2025-08-01	1386.2	1375.6	1337.9	1200
2025-07-01	1386.2	1375.6	1337.9	1200
2025-06-01	1386.2	1375.6	1337.9	1200
2025-05-01	1358	1340	1337.9	1200
2025-04-01	1375.9	1355.2	1337.9	1200
2025-03-01	1378.9	1355.9	1337.9	1200
2025-02-01	1355	1331	1329.7	1200
2025-01-01	1335.5	1307.1	1329.7	1200
2024-12-01	1296.3	1259.6	1329.7	1200
2024-11-01	1296.3	1259.6	1329.7	1200
2024-10-01	1336.2	1334.8	1275.7	1200
2024-09-01	1325.3	1320.6	1275.7	1200
2024-11-01	1290.4	1269.8	1275.7	1200
2024-07-01	1270	1269.8	1233.6	1200
2024-06-01	1270	1269.8	1233.6	1200
2024-05-01	1260.4	1259.4	1233.6	1200
2024-04-01	1271.1	1259.4	1256.6	1200
2024-03-01	1259.7	1256.5	1256.6	1200
2024-02-01	1240	1256.5	1207.6	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	Langeberg Club 2025 (U12)	2025-10-04	2025-10-04	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
2	Cape Winelands Top Schools 2025 (U13)	2025-08-23	2025-08-23	Rapid	Cape Winelands (WCW)	5	2	2	Yes	Analysis
3	Western Cape Women�s Championship 2025 (U12)	2025-08-09	2025-08-09	Standard	West Coast (WCU)	5	5	3	Yes	Analysis
4	Western Cape Women�s Championship 2025 (Sunday Rapid)	2025-08-10	2025-08-10	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
5	Western Cape Schools Individual Championship 2025 (U11 Boys)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis
6	West Coast And Mykonos Open 2025 (U12)	2025-05-02	2025-05-04	Standard	West Coast (WCU)	5	5	3	Yes	Analysis
7	South African Junior Closed Chess Championships 2025 (U12 Open)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	9	3	Yes	Analysis
8	Cape Town Open Chess Festival 2025 (U12)	2025-03-22	2025-03-23	Standard	Cape Town (WCT)	6	5	2	Yes	Analysis
9	Cape Winelands Schools Prestige 2025 (U11 Boys)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
10	Cape Winelands Schools - Trials 1 2025 (U11 Boys)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
11	Laerskool Welgemoed Rapid 2025 (U12)	2025-02-15	2025-02-15	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis
12	Marie Delport Memorial 2025 (U12 Boys)	2025-01-25	2025-01-26	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis
13	Mzansi Interprovincial Youth Chess Championships 2024 (U12 Open Candidates)	2024-12-16	2024-12-19	Standard	Capricorn (LCP)	7	7	4.5	Yes	Analysis
14	Worcester Knock-Out 2024 (U11 Boys)	2024-10-19	2024-10-19	Rapid	Cape Winelands (WCW)	6	6	5	Yes	Analysis
15	UCT Open Chess Championship 2024 (Intermediate)	2024-10-12	2024-10-13	Standard	Cape Town (WCT)	6	5	1	Yes	Analysis
16	Chess Elevation Series -September 2024 (Level 1)	2024-09-20	2024-09-21	Standard	Cape Town (WCT)	5	5	2	Yes	Analysis
17	Akkertjies Invitational 2024 (U13 Boys)	2024-09-14	2024-09-14	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
18	Western Cape Women�s Championship 2024 (U12)	2024-08-09	2024-08-09	Standard	West Coast (WCU)	5	5	2	Yes	Analysis
19	De Villiers PS Tournament 2024 (U14)	2024-08-17	2024-08-17	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
20	Curro Durbanville Chess Rapid Open 2024 (Beginner)	2024-07-13	2024-07-13	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis
21	West Coast & Mykonos Open 2024 (U12)	2024-05-18	2024-05-18	Standard	West Coast (WCU)	5	2	1	Yes	Analysis
22	Worcester PS League 2024 (U11)	2024-04-27	2024-04-27	Standard	Cape Winelands (WCW)	5	4	2.5	Yes	Analysis
23	Hermanus Chess Club Open 2024 (Development)	2024-04-20	2024-04-20	Rapid	Overberg (WOS)	7	7	4	Yes	Analysis
24	Cape Winelands Schools - Prestige 2024 (U11 Boys)	2024-03-02	2024-03-02	Standard	Cape Winelands (WCW)	5	5	2.5	Yes	Analysis
25	Cape of Good Hope Open Chess Tournament 2024 (U10)	2024-02-17	2024-02-17	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
26	Cape Winelands Schools - PS Trials 1 2024 (U11 Boys)	2024-02-10	2024-02-10	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
27	Cape Winelands - Marie Delport Memorial 2024 (U12)	2024-01-27	2024-01-27	Rapid	Cape Winelands (WCW)	6	6	2.5	Yes	Analysis
28	Western Cape Schools 2022 (U9 Boys)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	6	2	Yes	Analysis
29	WN Akkertjies 2022 (Juniors)	2022-04-27	2022-04-27	Standard	Cape Winelands (WCW)	6	6	5	Yes	Analysis
30	Cape Winelands Schools 2022 (U9 Boys)	2022-03-12	2022-03-12	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
31	Worcester Schools Trials 2022 (U9 Boys+Girls)	2022-02-19	2022-02-19	Rapid	Cape Winelands (WCW)	5	4	3	Yes	Analysis
32	Cape Winelands Schools Trials 2021 (U9 Boys)	2021-10-16	2021-10-16	Rapid	Cape Winelands (WCW)	5	5	2	Yes	Analysis

#	Games	Start				End
1	7	Tournament Worcester Knock-Out 2024				Tournament Mzansi Interprovincial Youth Chess Championships 2024
		date 2024-10-19	rnd 3	type Rapid	result 1	date 2024-12-17	rnd 3	type Standard	result 0.5
		Opponent Kaffer, N (Noah)				Opponent De Villiers, C (Christiaan)
2	7	Tournament De Villiers PS Tournament 2024				Tournament Akkertjies Invitational 2024
		date 2024-08-17	rnd 1	type Standard	result 1	date 2024-09-14	rnd 2	type Standard	result 1
		Opponent Fluks, J (Jovan)				Opponent Mudau, U (Unarine)
3	6	Tournament Western Cape Women�s Championship 2025				Tournament Langeberg Club 2025
		date 2025-08-10	rnd 3	type Rapid	result 1	date 2025-10-04	rnd 1	type Rapid	result 1
		Opponent Sibanda, R (Robert)				Opponent Du Toit, S (Shaundre)

#	Games	Start				End
1	7	Tournament De Villiers PS Tournament 2024				Tournament Akkertjies Invitational 2024
		date 2024-08-17	rnd 1	type Standard	result 1	date 2024-09-14	rnd 2	type Standard	result 1
		Opponent Fluks, J (Jovan)				Opponent Mudau, U (Unarine)
2	4	Tournament Cape Winelands Schools Prestige 2025				Tournament Cape Town Open Chess Festival 2025
		date 2025-03-08	rnd 3	type Standard	result 1	date 2025-03-22	rnd 1	type Standard	result 1
		Opponent Smith, H (Hayden)				Opponent Isaacs, L (Luke)
3	4	Tournament Akkertjies Invitational 2024				Tournament Chess Elevation Series -September 2024
		date 2024-09-14	rnd 4	type Standard	result 1	date 2024-09-20	rnd 2	type Standard	result 0.5
		Opponent Viljoen, S (Steyn)				Opponent Nel, J (Joshua)

#	Games	Start				End
1	7	Tournament Hermanus Chess Club Open 2024				Tournament Curro Durbanville Chess Rapid Open 2024
		date 2024-04-20	rnd 5	type Rapid	result 1	date 2024-07-13	rnd 4	type Rapid	result 1
		Opponent Beukes, C (Cullen)				Opponent Smith, Z (Zachary)
2	5	Tournament Western Cape Women�s Championship 2025				Tournament Cape Winelands Top Schools 2025
		date 2025-08-10	rnd 3	type Rapid	result 1	date 2025-08-23	rnd 2	type Rapid	result 1
		Opponent Sibanda, R (Robert)				Opponent Holmes, M (Matthew)
3	4	Tournament Worcester Knock-Out 2024				Tournament Worcester Knock-Out 2024
		date 2024-10-19	rnd 3	type Rapid	result 1	date 2024-10-19	rnd 6	type Rapid	result 1
		Opponent Kaffer, N (Noah)				Opponent Krynauw, E (Eben)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament Worcester Knock-Out 2024				Tournament Mzansi Interprovincial Youth Chess Championships 2024
		date 2024-10-19	rnd 3	type Rapid	result 1	date 2024-12-16	rnd 2	type Standard	result 1
		Opponent Kaffer, N (Noah)				Opponent Bisram, N (Neha)
2	5	Tournament Western Cape Women�s Championship 2025				Tournament Cape Winelands Top Schools 2025
		date 2025-08-10	rnd 3	type Rapid	result 1	date 2025-08-23	rnd 2	type Rapid	result 1
		Opponent Sibanda, R (Robert)				Opponent Holmes, M (Matthew)
3	5	Tournament Laerskool Welgemoed Rapid 2025				Tournament Cape Winelands Schools - Trials 1 2025
		date 2025-02-15	rnd 4	type Rapid	result 1	date 2025-02-22	rnd 2	type Standard	result 1
		Opponent Buchner, C (Chris)				Opponent Neethling, J (Jacques)

#	Games	Start				End
1	4	Tournament Cape Winelands Schools Prestige 2025				Tournament Cape Town Open Chess Festival 2025
		date 2025-03-08	rnd 3	type Standard	result 1	date 2025-03-22	rnd 1	type Standard	result 1
		Opponent Smith, H (Hayden)				Opponent Isaacs, L (Luke)
2	4	Tournament Cape Winelands Schools 2022				Tournament Cape Winelands Schools 2022
		date 2022-03-12	rnd 1	type Standard	result 1	date 2022-03-12	rnd 4	type Standard	result 1
		Opponent Geel, M (Matthew)				Opponent Kriel, D (Daniel)
3	3	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools Prestige 2025
		date 2025-02-22	rnd 4	type Standard	result 1	date 2025-03-08	rnd 1	type Standard	result 1
		Opponent Rossouw, H (Henry)				Opponent Meisel, M (Michael)

#	Games	Start				End
1	7	Tournament Hermanus Chess Club Open 2024				Tournament Curro Durbanville Chess Rapid Open 2024
		date 2024-04-20	rnd 5	type Rapid	result 1	date 2024-07-13	rnd 4	type Rapid	result 1
		Opponent Beukes, C (Cullen)				Opponent Smith, Z (Zachary)
2	5	Tournament Western Cape Women�s Championship 2025				Tournament Cape Winelands Top Schools 2025
		date 2025-08-10	rnd 3	type Rapid	result 1	date 2025-08-23	rnd 2	type Rapid	result 1
		Opponent Sibanda, R (Robert)				Opponent Holmes, M (Matthew)
3	4	Tournament Worcester Knock-Out 2024				Tournament Worcester Knock-Out 2024
		date 2024-10-19	rnd 3	type Rapid	result 1	date 2024-10-19	rnd 6	type Rapid	result 1
		Opponent Kaffer, N (Noah)				Opponent Krynauw, E (Eben)

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 Tonder ,L (Luhann)	4	1	-212.5	3	0	-425	1	1	425	0	0	0
1	Van Tonder ,L (Luhann)	4	1249.1	1036.6	3	1246.9	824.1	1	1200	1674.1	0	0	0
2	Milhomem ,D (Daniel)	3	2	141.7	1	1	425	2	1	0	0	0	0
2	Milhomem ,D (Daniel)	3	1244.1	1385.8	1	1174.8	1669.1	2	1262.8	1244.1	0	0	0
3	Stern ,M (Mason)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Stern ,M (Mason)	2	1575	1150	2	1582.8	1150	0	0	0	0	0	0
4	Robertson ,M (Marvin)	2	2	425	2	2	425	0	0	0	0	0	0
4	Robertson ,M (Marvin)	2	1447.7	1872.7	2	1354.3	1872.7	0	0	0	0	0	0
5	Weng ,I (Ivan)	2	2	425	2	2	425	0	0	0	0	0	0
5	Weng ,I (Ivan)	2	1282.8	1707.8	2	1223.2	1707.8	0	0	0	0	0	0
6	Rossouw ,H (Henry)	2	2	425	2	2	425	0	0	0	0	0	0
6	Rossouw ,H (Henry)	2	1223.8	1648.8	2	1226	1648.8	0	0	0	0	0	0
7	Cilliers ,D (Dene)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	Cilliers ,D (Dene)	2	1429.6	1004.6	2	1396.8	1004.6	0	0	0	0	0	0
8	Fluks ,J (Jovan)	2	2	425	2	2	425	0	0	0	0	0	0
8	Fluks ,J (Jovan)	2	1077.4	1502.4	2	1099.2	1502.4	0	0	0	0	0	0
9	Klopper ,E (Elzaan)	2	2	425	2	2	425	0	0	0	0	0	0
9	Klopper ,E (Elzaan)	2	1343	1768	2	1324.3	1768	0	0	0	0	0	0
10	Prinsloo ,W (Willem)	2	1	0	2	1	0	0	0	0	0	0	0
10	Prinsloo ,W (Willem)	2	1191.2	1191.2	2	1153.1	1191.2	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Viljoen, A (Adrihan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms