Chess South Africa Ratings Database

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Personal

Pietersen, W (Willmore)

Chess SA id

189050816

FIDE id

Date of birth

1989-01-02 (Adult)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1540.4	1547.9	1368.2	1300.4
Raw rating	1540.4	1547.9	1368.2	1300.4
Weighted rating	1502.3	1514.4	1337.8	1299.3
Weighted performance	1318.9	982.2	1224.4	0
Floor	1040.4	1047.9	868.2	800.4
K-factor	32	32	36	36
Min/Max rating change allowed	102.1	101	130.5	143.7
Highest rating	1540.4 2025-11-01	1547.9 2025-11-01	1368.2 2025-08-01	1392.8 2020-02-01
Highest raw rating	1540.4 2025-11-01	1547.9 2025-11-01	1368.2 2025-08-01	1300.4 2024-03-01
Highest weighted rating	1502.3 2025-11-01	1514.4 2025-11-01	1323.6 2025-08-01	1296.7 2025-08-01
Highest weighted performance	1469.5 2025-08-01	1460.5 2022-02-01	1252.9 2020-01-01	1392.8 2020-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1540.4	1547.9	1368.2	1300.4
Analysis
Rating	1540.4	1547.9	1368.2	1300.4
Raw rating	1540.4	1547.9	1368.2	1300.4
Weighted rating	1502.3	1514.4	1337.8
Weighted performance	1318.9	982.2	1224.4
K-factor	32	32	36	36
Floor	1040.4	1047.9	868.2	800.4
Max/Min rating change allowed	102.1	101	130.5	143.7
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	1540.4	1547.9	1368.2	1300.4
New weighted rating	1505.6	1517.2	1341.7	1299.9
New weighted performance	1310.4	973.6	1215.9	0
Temp new rating	1540.4	1547.9	1368.2	1300.4
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1540.4	1547.9	1368.2	1300.4
New K-factor	32	32	36	36
New floor	1040.4	1047.9	868.2	800.4

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	24	12	12	0
	14	0	7	7
	5	0	5	0
	38	25	7	6
	17	11	6	0
History	128	63	43	22

Games since
	Main 38	Standard 12		Rapid 19		Blitz 7
Gender	Male
Age group	Adult
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
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	24	12.5	52.08	17.7	1530.4	1548.1
Standard	12	6	50	0	1601	1601
Rapid	12	6.5	54.17	35.4	1459.9	1495.3
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	125	69.5	55.6	47.6	1428.3	1475.9
Standard	60	39.5	65.83	134.6	1386.9	1521.5
Rapid	43	19	44.19	-49.4	1471.9	1422.5
Blitz	22	11	50	0	1455.8	1455.8

Date	Main	Standard	Rapid	Blitz
2025-11-01	1540.4	1547.9	1368.2	1300.4
2025-09-30	1503.6	1512.7	1368.2	1300.4
2025-09-01	1503.6	1512.7	1368.2	1300.4
2025-08-01	1503.6	1512.7	1368.2	1300.4
2025-07-01	1500.6	1512.7	1338.5	1300.4
2025-06-01	1500.6	1512.7	1338.5	1300.4
2025-05-01	1500.6	1512.7	1338.5	1300.4
2025-04-01	1500.6	1512.7	1338.5	1300.4
2025-03-01	1500.6	1512.7	1338.5	1300.4
2025-02-01	1493.2	1509.8	1338.5	1300.4
2025-01-01	1496.4	1509.8	1320.9	1300.4
2024-12-01	1496.4	1509.8	1320.9	1300.4
2024-11-01	1496.4	1509.8	1320.9	1300.4
2024-10-01	1496.4	1509.8	1320.9	1300.4
2024-09-01	1496.4	1509.8	1320.9	1300.4
2024-08-01	1496.4	1509.8	1320.9	1300.4
2024-07-01	1496.4	1509.8	1320.9	1300.4
2024-09-01	1496.4	1509.8	1320.9	1300.4
2024-05-01	1496.4	1509.8	1320.9	1300.4
2024-04-01	1492	1509.8	1251.8	1300.4
2024-03-01	1492	1509.8	1251.8	1300.4
2024-02-01	1487.5	1509.8	1251.8	1247.8
2024-01-01	1487.5	1509.8	1251.8	1247.8
2023-12-01	1487.5	1509.8	1251.8	1247.8

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	Cape Town Chess Federation Club League 2025 (A)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	1	0.5	Yes	Analysis
2	Cape Town Chess Federation Club League 2025 (B)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	5	2.5	Yes	Analysis
3	Blackjacks Chess Club Rapid Championship 2025	2025-06-21	2025-06-21	Rapid	Cape Town (WCT)	6	6	3.5	Yes	Analysis
4	Cape of Good Hope Open 2025 (Advanced)	2025-02-22	2025-02-23	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
5	2025 Kraaifontein Open Chess Championships (Rapid Open)	2025-01-05	2025-01-05	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Cape Town Chess Federation Club League 2025 (A)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	1	0.5	Yes	Analysis
2	Cape Town Chess Federation Club League 2025 (B)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	5	2.5	Yes	Analysis
3	Blackjacks Chess Club Rapid Championship 2025	2025-06-21	2025-06-21	Rapid	Cape Town (WCT)	6	6	3.5	Yes	Analysis
4	Cape of Good Hope Open 2025 (Advanced)	2025-02-22	2025-02-23	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
5	2025 Kraaifontein Open Chess Championships (Rapid Open)	2025-01-05	2025-01-05	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
6	Hermanus Chess Club Open 2024 (Advanced)	2024-04-20	2024-04-20	Rapid	Overberg (WOS)	7	7	3	Yes	Analysis
7	Steinitz Club Team Blitz Championship 2024	2024-02-15	2024-02-15	Blitz	Cape Town (WCT)	7	7	3	Yes	Analysis
8	Cape of Good Hope Open 2023 (Rapid)	2023-01-29	2023-01-29	Rapid	Cape Town (WCT)	6	5	2	Yes	Analysis
9	2022 Western Province Club League (C)	2022-08-20	2022-10-01	Standard	Cape Town (WCT)	11	7	6.5	Yes	Analysis
10	Western Cape Closed Championship 2022 (Blitz)	2022-09-24	2022-09-25	Blitz	Cape Winelands (WCW)	7	6	2	Yes	Analysis
11	CTCA Rapid Masters @ Kraaifontein Library 2022 (Open)	2022-05-15	2022-05-15	Rapid	Cape Town (WCT)	6	1	0	Yes	Analysis
12	CTCA Rapid Masters @ Claremont Chess Club 2022 (Open)	2022-04-18	2022-04-18	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
13	Western Province Open 2022 (Advanced)	2022-02-25	2022-02-27	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
14	Cape Winelands Open 2022 (Advanced)	2022-02-12	2022-02-13	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis
15	Kraaifontein Open 2022 (Intermediate)	2022-01-08	2022-01-09	Standard	Cape Town (WCT)	6	6	5.5	Yes	Analysis
16	Kraaifontein Rapid 2021 (Advanced)	2021-12-11	2021-12-12	Rapid	Cape Town (WCT)	6	6	3.5	Yes	Analysis
17	Western Cape Closed 2021 (Open)	2021-09-24	2021-09-25	Standard	Cape Winelands (WCW)	6	6	3.5	Yes	Analysis
18	Paul Roos Gymnasium Covid-19 Challenge 2021 (B)	2021-02-27	2021-02-28	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
19	2020 Western Province Open (Prestige)	2020-03-07	2020-03-08	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
20	Paul Roos Blitz 2020	2020-02-22	2020-02-22	Blitz	Cape Winelands (WCW)	9	9	6	Yes	Analysis
21	Nelson Mandela Rapid 2020 (Open)	2020-02-01	2020-02-01	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
22	2019 Western Cape Closed Chess Championships (D)	2019-09-21	2019-09-22	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis

#	Games	Start				End
1	7	Tournament 2022 Western Province Club League				Tournament Western Cape Closed Championship 2022
		date 2022-08-20	rnd 1	type Standard	result 1	date 2022-09-24	rnd 1	type Blitz	result 1
		Opponent Cupido, L (Leighton)				Opponent Martin, N (Nico)
2	7	Tournament Kraaifontein Rapid 2021				Tournament Kraaifontein Open 2022
		date 2021-12-12	rnd 6	type Rapid	result 1	date 2022-01-09	rnd 6	type Standard	result 1
		Opponent Mavenge, K (Kay)				Opponent Mokoatle, RL (Reanetse Lucianus)
3	5	Tournament Cape Town Chess Federation Club League 2025				Tournament Cape Town Chess Federation Club League 2025
		date 2025-08-16	rnd 4	type Standard	result 0.5	date 2025-09-20	rnd 9	type Standard	result 0.5
		Opponent Joubert, N (Natasha)				Opponent Mackinna, C (Cashlin)

#	Games	Start				End
1	9	Tournament Western Province Open 2022				Tournament Cape of Good Hope Open 2025
		date 2022-02-27	rnd 6	type Standard	result 1	date 2025-02-22	rnd 1	type Standard	result 1
		Opponent Murphy, T (Timothy)				Opponent Brown, JR (John-Rodney)
2	6	Tournament Kraaifontein Open 2022				Tournament Kraaifontein Open 2022
		date 2022-01-08	rnd 1	type Standard	result 1	date 2022-01-09	rnd 6	type Standard	result 1
		Opponent Brink, W (Wihan)				Opponent Mokoatle, RL (Reanetse Lucianus)
3	4	Tournament Paul Roos Gymnasium Covid-19 Challenge 2021				Tournament Western Cape Closed 2021
		date 2021-02-28	rnd 5	type Standard	result 1	date 2021-09-24	rnd 3	type Standard	result 0.5
		Opponent Jaffer, U (Uzair)				Opponent Van Staaden, D (Darren)

#	Games	Start				End
1	3	Tournament Hermanus Chess Club Open 2024				Tournament Hermanus Chess Club Open 2024
		date 2024-04-20	rnd 1	type Rapid	result 0.5	date 2024-04-20	rnd 3	type Rapid	result 1
		Opponent Schuller, A (Ashley)				Opponent Carter, ES (Eric)
2	3	Tournament Kraaifontein Rapid 2021				Tournament Kraaifontein Rapid 2021
		date 2021-12-11	rnd 1	type Rapid	result 0.5	date 2021-12-11	rnd 3	type Rapid	result 1
		Opponent Bosman, P (Petrus)				Opponent Le Fleur, SC (Shaun)
3	2	Tournament Blackjacks Chess Club Rapid Championship 2025				Tournament Blackjacks Chess Club Rapid Championship 2025
		date 2025-06-21	rnd 3	type Rapid	result 1	date 2025-06-21	rnd 4	type Rapid	result 1
		Opponent Mintoor, D (Davian)				Opponent Mintoor, D (Donvito)

#	Games	Start				End
1	3	Tournament Steinitz Club Team Blitz Championship 2024				Tournament Steinitz Club Team Blitz Championship 2024
		date 2024-02-15	rnd 3	type Blitz	result 1	date 2024-02-15	rnd 5	type Blitz	result 1
		Opponent Smith, S (Shiloh)				Opponent Korebrits, R (Richard)
2	3	Tournament Paul Roos Blitz 2020				Tournament Western Cape Closed Championship 2022
		date 2020-02-22	rnd 8	type Blitz	result 1	date 2022-09-24	rnd 1	type Blitz	result 1
		Opponent Van Der Walt, A (Alexander)				Opponent Martin, N (Nico)
3	2	Tournament Paul Roos Blitz 2020				Tournament Paul Roos Blitz 2020
		date 2020-02-22	rnd 3	type Blitz	result 1	date 2020-02-22	rnd 4	type Blitz	result 1
		Opponent Velem, R (Renico)				Opponent Appollis, M (Martino)

#	Games	Start				End
1	5	Tournament 2022 Western Province Club League				Tournament 2022 Western Province Club League
		date 2022-08-20	rnd 1	type Standard	result 1	date 2022-09-10	rnd 7	type Standard	result 1
		Opponent Cupido, L (Leighton)				Opponent Mostert, JC (Jacques)
2	5	Tournament Paul Roos Blitz 2020				Tournament 2020 Western Province Open
		date 2020-02-22	rnd 8	type Blitz	result 1	date 2020-03-07	rnd 3	type Standard	result 1
		Opponent Van Der Walt, A (Alexander)				Opponent Milner, J (Julian)
3	4	Tournament Kraaifontein Open 2022				Tournament Kraaifontein Open 2022
		date 2022-01-08	rnd 3	type Standard	result 1	date 2022-01-09	rnd 6	type Standard	result 1
		Opponent Epstein, A (Aaron)				Opponent Mokoatle, RL (Reanetse Lucianus)

#	Games	Start				End
1	6	Tournament Western Province Open 2022				Tournament 2022 Western Province Club League
		date 2022-02-27	rnd 6	type Standard	result 1	date 2022-09-10	rnd 7	type Standard	result 1
		Opponent Murphy, T (Timothy)				Opponent Mostert, JC (Jacques)
2	4	Tournament Kraaifontein Open 2022				Tournament Kraaifontein Open 2022
		date 2022-01-08	rnd 3	type Standard	result 1	date 2022-01-09	rnd 6	type Standard	result 1
		Opponent Epstein, A (Aaron)				Opponent Mokoatle, RL (Reanetse Lucianus)
3	3	Tournament Paul Roos Gymnasium Covid-19 Challenge 2021				Tournament Western Cape Closed 2021
		date 2021-02-28	rnd 5	type Standard	result 1	date 2021-09-24	rnd 2	type Standard	result 1
		Opponent Jaffer, U (Uzair)				Opponent Du Preez, K (Katrien)

#	Games	Start				End
1	2	Tournament Blackjacks Chess Club Rapid Championship 2025				Tournament Blackjacks Chess Club Rapid Championship 2025
		date 2025-06-21	rnd 3	type Rapid	result 1	date 2025-06-21	rnd 4	type Rapid	result 1
		Opponent Mintoor, D (Davian)				Opponent Mintoor, D (Donvito)
2	2	Tournament 2025 Kraaifontein Open Chess Championships				Tournament 2025 Kraaifontein Open Chess Championships
		date 2025-01-05	rnd 3	type Rapid	result 1	date 2025-01-05	rnd 4	type Rapid	result 1
		Opponent Willenberg, K (Keagan)				Opponent Franks, J (Jo-Jo)
3	2	Tournament Kraaifontein Rapid 2021				Tournament CTCA Rapid Masters @ Claremont Chess Club 2022
		date 2021-12-12	rnd 6	type Rapid	result 1	date 2022-04-18	rnd 1	type Rapid	result 1
		Opponent Mavenge, K (Kay)				Opponent Crawford, R (Ross)

#	Games	Start				End
1	3	Tournament Steinitz Club Team Blitz Championship 2024				Tournament Steinitz Club Team Blitz Championship 2024
		date 2024-02-15	rnd 3	type Blitz	result 1	date 2024-02-15	rnd 5	type Blitz	result 1
		Opponent Smith, S (Shiloh)				Opponent Korebrits, R (Richard)
2	3	Tournament Paul Roos Blitz 2020				Tournament Western Cape Closed Championship 2022
		date 2020-02-22	rnd 8	type Blitz	result 1	date 2022-09-24	rnd 1	type Blitz	result 1
		Opponent Van Der Walt, A (Alexander)				Opponent Martin, N (Nico)
3	2	Tournament Paul Roos Blitz 2020				Tournament Paul Roos Blitz 2020
		date 2020-02-22	rnd 3	type Blitz	result 1	date 2020-02-22	rnd 4	type Blitz	result 1
		Opponent Velem, R (Renico)				Opponent Appollis, M (Martino)

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	Munro ,JM (Jonathan)	3	0.5	-283.3	1	0.5	0	2	0	-425	0	0	0
1	Munro ,JM (Jonathan)	3	1340.4	1057	1	1321.2	1340.4	2	1259.4	915.4	0	0	0
2	Louw ,LT (Llewellyn Theodor)	3	0.5	-283.3	0	0	0	3	0.5	-283.3	0	0	0
2	Louw ,LT (Llewellyn Theodor)	3	1607.7	1324.4	0	0	0	3	1643	1324.4	0	0	0
3	Nieuwoudt ,N (Noreht)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
3	Nieuwoudt ,N (Noreht)	2	1466.2	1678.7	2	1481.4	1678.7	0	0	0	0	0	0
4	Maneveld ,C (Conrad)	2	2	425	1	1	425	1	1	425	0	0	0
4	Maneveld ,C (Conrad)	2	1545.1	1970.1	1	1589.9	1970.1	1	1282.3	1970.1	0	0	0
5	Titus ,V (Virgel)	2	0	-425	1	0	-425	0	0	0	1	0	-425
5	Titus ,V (Virgel)	2	1317.2	892.2	1	1321.2	892.2	0	0	0	1	1304.3	892.2
6	Smith ,S (Shiloh)	2	2	425	1	1	425	0	0	0	1	1	425
6	Smith ,S (Shiloh)	2	1308.6	1733.6	1	1222.4	1733.6	0	0	0	1	1200	1733.6
7	Blauw ,S (Siyamthanda)	2	1	0	0	0	0	2	1	0	0	0	0
7	Blauw ,S (Siyamthanda)	2	1481.9	1481.9	0	0	0	2	1369.2	1481.9	0	0	0
8	Mnyasta ,T (Tezihano)	2	0	-425	0	0	0	1	0	-425	1	0	-425
8	Mnyasta ,T (Tezihano)	2	1994.4	1569.4	0	0	0	1	2020.5	1569.4	1	1914.2	1569.4
9	Minnie ,H (Hendrik)	1	1	425	1	1	425	0	0	0	0	0	0
9	Minnie ,H (Hendrik)	1	1353	1778	1	1355.9	1778	0	0	0	0	0	0
10	Van Tonder ,W (Wium)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Van Tonder ,W (Wium)	1	1417.9	992.9	1	1405	992.9	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Pietersen, W (Willmore)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms