Chess South Africa Ratings Database

PLAYER PAGE

Personal

Viljoen, P (Pieter)

Chess SA id

1110138431

FIDE id

Date of birth

2011-10-29 (U16)

Gender

Male

Region

Overberg (WOS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-07

Personal details last changed

1900-01-01

Junior GPX Games

36.9

Junior GPX Points

1298

Item	Main	Standard	Rapid	Blitz
Rating	1483.6	1497.8	1369	1200
Raw rating	1483.6	1497.8	1369	1200
Weighted rating	1440.7	1442.8	1344.3	1200
Weighted performance	1431	1448.4	1272	0
Floor	999.9	997.8	934.2	700
K-factor	32	32	32	36
Min/Max rating change allowed	110.7	108.5	130.3	165.8
Highest rating	1520.6 2024-09-01	1511 2024-09-01	1434.2 2025-03-01	1200 2018-10-01
Highest raw rating	1499.9 2025-03-01	1497.8 2025-09-30	1434.2 2025-03-01	1200 2024-02-01
Highest weighted rating	1440.7 2025-09-30	1442.8 2025-09-30	1335.4 2025-08-01	1200 2018-10-01
Highest weighted performance	1520.6 2025-03-01	1511 2024-09-01	1422.2 2023-03-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1483.6	1497.8	1369	1200
Analysis
Rating	1483.6	1497.8	1369	1200
Raw rating	1483.6	1497.8	1369	1200
Weighted rating	1440.7	1442.8	1344.3
Weighted performance	1431	1448.4	1272
K-factor	32	32	32	36
Floor	999.9	997.8	934.2	700
Max/Min rating change allowed	110.7	108.5	130.3	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	1483.6	1497.8	1369	1200
New weighted rating	1447	1450.6	1348.3	1200
New weighted performance	1430.5	1447.8	1271.5	0
Temp new rating	1483.6	1497.8	1369	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1483.6	1497.8	1369	1200
New K-factor	32	32	32	36
New floor	999.9	997.8	934.2	700

Item	Main	Standard	Rapid
	0	0	0
	40	21	19
	61	43	18
	33	16	17
	16	10	6
	0	0	0
History	150	90	60

Games since
	Main 101	Standard 64		Rapid 37		Blitz 0
Gender	Male
Age group	U16
Region	Overberg (WOS)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	1384		418		18
Male	1183		347		14
U16	179		55		3
U16 Male	144		44		3
Standard
	RSA		Province		Region
Overall	1191		324		13
Male	1017		263		11
U16	158		48		3
U16 Male	127		39		3
Rapid
	RSA		Province		Region
Overall	658		343		37
Male	552		285		26
U16	102		58		7
U16 Male	76		44		4
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	40	27	67.5	148.8	1317.5	1466.2
Standard	21	15	71.43	182.1	1327.2	1509.4
Rapid	19	12	63.16	111.8	1306.7	1418.5
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	150	93	62	102	1300.1	1402.1
Standard	90	56.5	62.78	108.6	1318.6	1427.2
Rapid	60	36.5	60.83	92.1	1272.4	1364.5
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1483.6	1497.8	1369	1200
2025-09-01	1443.7	1454.3	1369	1200
2025-08-01	1440.3	1454.8	1369	1200
2025-07-01	1440.3	1454.8	1369	1200
2025-06-01	1440.3	1454.8	1369	1200
2025-05-01	1440.3	1454.8	1369	1200
2025-04-01	1495	1469.8	1434.2	1200
2025-03-01	1499.9	1480.8	1434.2	1200
2025-02-01	1475.5	1480.8	1323.2	1200
2025-01-01	1475.5	1480.8	1323.2	1200
2024-12-01	1489.6	1495.5	1323.2	1200
2024-11-01	1489.6	1495.5	1323.2	1200
2024-10-01	1489.6	1495.5	1323.2	1200
2024-09-01	1401.9	1413	1270.6	1200
2024-08-01	1401.9	1413	1270.6	1200
2024-07-01	1354.4	1337.8	1270.6	1200
2024-06-01	1354.4	1337.8	1270.6	1200
2024-08-01	1320.3	1299.6	1270.6	1200
2024-04-01	1327.4	1299.6	1281.8	1200
2024-03-01	1292.2	1264.7	1267.4	1200
2024-02-01	1292.2	1264.7	1267.4	1200
2024-01-01	1292.2	1264.7	1267.4	1200
2023-12-01	1292.2	1264.7	1267.4	1200
2023-11-01	1292.2	1264.7	1267.4	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	Western Cape Schools - Top Schools 2025 (U15)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	6	5	Yes	Analysis
2	Overberg Top Schools 2025 (U15-U19)	2025-08-02	2025-08-02	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
3	Western Cape Schools Individual Championship 2025 (U15 Boys)	2025-04-26	2025-04-27	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
4	Hermanus Chess Club Open 2025 (Intermediate)	2025-04-12	2025-04-12	Rapid	Overberg (WOS)	7	7	2	Yes	Analysis
5	Overberg Schools - HS Closed 2025 (U15 Boys)	2025-03-22	2025-03-22	Standard	Overberg (WOS)	5	4	3	Yes	Analysis
6	Overberg Schools - HS Trials 2025 (U15 Boys)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	5	Yes	Analysis
7	Overberg Schools & Federation Open 2025 (U15)	2025-02-01	2025-02-01	Rapid	Overberg (WOS)	6	6	5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Western Cape Schools - Top Schools 2025 (U15)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	6	5	Yes	Analysis
2	Overberg Top Schools 2025 (U15-U19)	2025-08-02	2025-08-02	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
3	Western Cape Schools Individual Championship 2025 (U15 Boys)	2025-04-26	2025-04-27	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
4	Hermanus Chess Club Open 2025 (Intermediate)	2025-04-12	2025-04-12	Rapid	Overberg (WOS)	7	7	2	Yes	Analysis
5	Overberg Schools - HS Closed 2025 (U15 Boys)	2025-03-22	2025-03-22	Standard	Overberg (WOS)	5	4	3	Yes	Analysis
6	Overberg Schools - HS Trials 2025 (U15 Boys)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	5	Yes	Analysis
7	Overberg Schools & Federation Open 2025 (U15)	2025-02-01	2025-02-01	Rapid	Overberg (WOS)	6	6	5	Yes	Analysis
8	Mzansi Interprovincial Youth Chess Championships 2024 (U14 Open Championship)	2024-12-16	2024-12-19	Standard	Capricorn (LCP)	7	7	3.5	Yes	Analysis
9	Overberg GP Invitational Day 2 2024 (B)	2024-09-27	2024-09-27	Standard	Overberg (WOS)	5	5	4.5	Yes	Analysis
10	Overberg GP Invitational Day 1 2024 (B)	2024-09-26	2024-09-26	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
11	Kleinmond Chess Club Open 2024 (U14)	2024-09-07	2024-09-07	Rapid	Overberg (WOS)	6	6	4.5	Yes	Analysis
12	Western Cape Top Schools Championship 2024 (U13 Mixed)	2024-08-30	2024-09-01	Standard	Eden (WEG)	6	6	3.5	Yes	Analysis
13	Overberg Schools - Top Schools 2024 (U13 Mixed)	2024-07-27	2024-07-27	Standard	Overberg (WOS)	5	5	5	Yes	Analysis
14	Western Cape PS Individuals Championship 2024 (U13 Boys)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	3.5	Yes	Analysis
15	Hermanus Chess Club Open 2024 (Intermediate)	2024-04-20	2024-04-20	Rapid	Overberg (WOS)	7	7	4	Yes	Analysis
16	Western Cape Inter Region Cup 2024 (U14 Boys)	2024-03-23	2024-03-24	Standard	Overberg (WOS)	5	4	1	Yes	Analysis
17	Overberg Schools - PS Closed 2024 (U13 Boys)	2024-03-16	2024-03-16	Standard	Overberg (WOS)	5	5	3.5	Yes	Analysis
18	Overberg Schools - PS Trials Region 3 2024 (U13 Boys)	2024-03-02	2024-03-02	Rapid	Overberg (WOS)	5	5	3	Yes	Analysis
19	Overberg Top Schools 2023 (U13)	2023-08-05	2023-08-05	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
20	Western Cape PS Individuals 2023 (U13 Boys)	2023-05-05	2023-05-06	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
21	Hermanus Rapid 2023 (C)	2023-04-22	2023-04-22	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis
22	Overberg School Chess Closed Tournament 2023 (U13 Boys)	2023-03-25	2023-03-25	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
23	Overberg Primary School Trials (Region 2)	2023-02-24	2023-03-10	Rapid	Overberg (WOS)	6	6	4	Yes	Analysis
24	Overberg Schools Open Tournament 2023 (U12)	2023-02-11	2023-02-11	Rapid	Overberg (WOS)	5	5	3	Yes	Analysis
25	The Hermanus Open 2022 (U12)	2022-05-14	2022-05-14	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis
26	Western Cape Schools 2022 (U11 Boys)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	5	1	Yes	Analysis
27	Overberg Primary Schools Closed 2022 (U11 Boys)	2022-03-12	2022-03-12	Standard	Overberg (WOS)	5	5	3	Yes	Analysis

#	Games	Start				End
1	8	Tournament Overberg Schools & Federation Open 2025				Tournament Overberg Schools - HS Trials 2025
		date 2025-02-01	rnd 3	type Rapid	result 1	date 2025-02-22	rnd 4	type Rapid	result 1
		Opponent Dreyer, D (De Villiers)				Opponent Lotter, M (Michael)
2	8	Tournament Overberg Schools - Top Schools 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-07-27	rnd 1	type Standard	result 1	date 2024-08-30	rnd 3	type Standard	result 1
		Opponent Mong, B (Bernardus Johannes)				Opponent Kramer, S (Samuel)
3	6	Tournament Western Cape Top Schools Championship 2024				Tournament Kleinmond Chess Club Open 2024
		date 2024-09-01	rnd 6	type Standard	result 1	date 2024-09-07	rnd 5	type Rapid	result 1
		Opponent Arendse, J (Jaylin)				Opponent Roux, C (Charl)

#	Games	Start				End
1	8	Tournament Overberg Schools - Top Schools 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-07-27	rnd 1	type Standard	result 1	date 2024-08-30	rnd 3	type Standard	result 1
		Opponent Mong, B (Bernardus Johannes)				Opponent Kramer, S (Samuel)
2	6	Tournament Overberg Top Schools 2023				Tournament Overberg Schools - PS Closed 2024
		date 2023-08-05	rnd 4	type Standard	result 1	date 2024-03-16	rnd 4	type Standard	result 0.5
		Opponent Snyman, A (Andre)				Opponent Olivier, F (Francois)
3	5	Tournament Overberg Schools - HS Closed 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-03-22	rnd 3	type Standard	result 1	date 2025-04-26	rnd 2	type Standard	result 1
		Opponent Swart, E (Eon)				Opponent Groenewald, W (Willem)

#	Games	Start				End
1	8	Tournament Overberg Schools & Federation Open 2025				Tournament Overberg Schools - HS Trials 2025
		date 2025-02-01	rnd 3	type Rapid	result 1	date 2025-02-22	rnd 4	type Rapid	result 1
		Opponent Dreyer, D (De Villiers)				Opponent Lotter, M (Michael)
2	5	Tournament Kleinmond Chess Club Open 2024				Tournament Kleinmond Chess Club Open 2024
		date 2024-09-07	rnd 1	type Rapid	result 1	date 2024-09-07	rnd 5	type Rapid	result 1
		Opponent Van Schoor, J (Jade)				Opponent Roux, C (Charl)
3	4	Tournament Hermanus Chess Club Open 2024				Tournament Hermanus Chess Club Open 2024
		date 2024-04-20	rnd 3	type Rapid	result 1	date 2024-04-20	rnd 6	type Rapid	result 1
		Opponent Oosthuizen, J (Jacques)				Opponent Fillies, K (Keshe)

No games found.

#	Games	Start				End

#	Games	Start				End
1	8	Tournament Overberg Schools & Federation Open 2025				Tournament Overberg Schools - HS Trials 2025
		date 2025-02-01	rnd 3	type Rapid	result 1	date 2025-02-22	rnd 4	type Rapid	result 1
		Opponent Dreyer, D (De Villiers)				Opponent Lotter, M (Michael)
2	6	Tournament Overberg Schools - Top Schools 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-07-27	rnd 1	type Standard	result 1	date 2024-08-30	rnd 1	type Standard	result 1
		Opponent Mong, B (Bernardus Johannes)				Opponent Mouton, P (Paul)
3	5	Tournament Overberg School Chess Closed Tournament 2023				Tournament Hermanus Rapid 2023
		date 2023-03-25	rnd 3	type Standard	result 1	date 2023-04-22	rnd 2	type Rapid	result 1
		Opponent Van Der Merwe, J (Jesse)				Opponent Macamba, L (Liso)

#	Games	Start				End
1	6	Tournament Overberg Schools - Top Schools 2024				Tournament Western Cape Top Schools Championship 2024
		date 2024-07-27	rnd 1	type Standard	result 1	date 2024-08-30	rnd 1	type Standard	result 1
		Opponent Mong, B (Bernardus Johannes)				Opponent Mouton, P (Paul)
2	5	Tournament Overberg Schools - HS Closed 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-03-22	rnd 3	type Standard	result 1	date 2025-04-26	rnd 2	type Standard	result 1
		Opponent Swart, E (Eon)				Opponent Groenewald, W (Willem)
3	5	Tournament Overberg Top Schools 2023				Tournament Overberg Schools - PS Closed 2024
		date 2023-08-05	rnd 4	type Standard	result 1	date 2024-03-16	rnd 3	type Standard	result 1
		Opponent Snyman, A (Andre)				Opponent Erasmus, A (Ashton)

#	Games	Start				End
1	8	Tournament Overberg Schools & Federation Open 2025				Tournament Overberg Schools - HS Trials 2025
		date 2025-02-01	rnd 3	type Rapid	result 1	date 2025-02-22	rnd 4	type Rapid	result 1
		Opponent Dreyer, D (De Villiers)				Opponent Lotter, M (Michael)
2	4	Tournament Hermanus Chess Club Open 2024				Tournament Hermanus Chess Club Open 2024
		date 2024-04-20	rnd 3	type Rapid	result 1	date 2024-04-20	rnd 6	type Rapid	result 1
		Opponent Oosthuizen, J (Jacques)				Opponent Fillies, K (Keshe)
3	4	Tournament Overberg Primary School Trials				Tournament Overberg Primary School Trials
		date 2023-02-24	rnd 2	type Rapid	result 1	date 2023-03-10	rnd 5	type Rapid	result 1
		Opponent Olivier, F (Francois)				Opponent Rolobane, A (Avuyile)

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 Linde ,L (Luandi)	4	2	0	2	1	0	2	1	0	0	0	0
1	Van Der Linde ,L (Luandi)	4	1442.7	1442.7	2	1467.3	1442.7	2	1263.7	1442.7	0	0	0
2	Foye ,L (Logan)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
2	Foye ,L (Logan)	3	1244.3	1102.7	3	1226.3	1102.7	0	0	0	0	0	0
3	Prinsloo ,L (Lyle)	3	1	-141.7	2	1	0	1	0	-425	0	0	0
3	Prinsloo ,L (Lyle)	3	1530.5	1388.8	2	1518.4	1530.5	1	1458.5	1105.5	0	0	0
4	Stevens ,DA (Danielle-Ann)	3	2	141.7	2	1	0	1	1	425	0	0	0
4	Stevens ,DA (Danielle-Ann)	3	1403.3	1545	2	1358.4	1403.3	1	1375	1828.3	0	0	0
5	Scholtz ,F (Francois)	3	1	-141.7	2	1	0	1	0	-425	0	0	0
5	Scholtz ,F (Francois)	3	1218.1	1076.5	2	1203.6	1218.1	1	1231.5	793.1	0	0	0
6	Smal ,R (Riley)	3	3	425	2	2	425	1	1	425	0	0	0
6	Smal ,R (Riley)	3	1263	1688	2	1242.6	1688	1	1167.2	1688	0	0	0
7	Roux ,C (Charl)	3	2	141.7	1	1	425	2	1	0	0	0	0
7	Roux ,C (Charl)	3	1226.3	1368	1	1200	1651.3	2	1238.9	1226.3	0	0	0
8	Davison ,T (Thomas)	2	2	425	2	2	425	0	0	0	0	0	0
8	Davison ,T (Thomas)	2	1242	1667	2	1223.5	1667	0	0	0	0	0	0
9	Erasmus ,A (Ashton)	2	2	425	2	2	425	0	0	0	0	0	0
9	Erasmus ,A (Ashton)	2	1256.7	1681.7	2	1242.2	1681.7	0	0	0	0	0	0
10	Ngidi ,N (Ndumiso)	2	0	-425	2	0	-425	0	0	0	0	0	0
10	Ngidi ,N (Ndumiso)	2	1495.8	1070.8	2	1458.9	1070.8	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, P (Pieter)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms