Chess South Africa Ratings Database

PLAYER PAGE

Personal

Coetzer, PWJ (Pieter Wilhelm)

Chess SA id

165005322

FIDE id

Date of birth

1965-09-21 (Adult)

Gender

Male

Region

Eden (WEG)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-11

Personal details last changed

2025-05-09

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	2070.8	2081.1	2070.2	2076.5
Raw rating	1996.6	2020.2	2019.9	2040.4
Weighted rating	2070.8	2081.1	2070.2	2076.5
Weighted performance	1648.9	0	0	0
Floor	1594	1594	1594	1594
K-factor	20	20	20	20
Min/Max rating change allowed	53.3	51.5	51.6	50.1
Highest rating	2094 2024-02-01	2094 2024-02-01	2094 2024-02-01	2094 2024-02-01
Highest raw rating	2094 2024-02-01	2094 2024-02-01	2094 2024-02-01	2094 2024-02-01
Highest weighted rating	2070.8 2025-11-01	2081.1 2025-11-01	2070.2 2025-11-01	2076.5 2025-11-01
Highest weighted performance	1648.9 2025-11-01	1200 2024-02-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-3.9	-2.5	-2	-0.6
New rating	2066.9	2078.6	2068.2	2075.9
Analysis
Rating	2070.8	2081.1	2070.2	2076.5
Raw rating	1996.6	2020.2	2019.9	2040.4
Weighted rating	2070.8	2081.1	2070.2
Weighted performance	1648.9	0	0
K-factor	20	20	20	20
Floor	1594	1594	1594	1594
Max/Min rating change allowed	53.3	51.5	51.6	50.1
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	1996.6	2020.2	2019.9	2040.4
New weighted rating	2066.9	2078.6	2068.2	2075.9
New weighted performance	1639.1	0	0	0
Temp new rating	2066.9	2078.6	2068.2	2075.9
Temp new rating +/-	-3.9	-2.5	-2	-0.6
Final new rating +/-	-3.9	-2.5	-2	-0.6
New rating	2066.9	2078.6	2068.2	2075.9
New K-factor	20	20	20	20
New floor	1594	1594	1594	1594

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	41	10	14	17
	0	0	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
History	41	10	14	17

Games since
	Main 41	Standard 10		Rapid 14		Blitz 17
Gender	Male
Age group	Adult
Region	Eden (WEG)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	29		8		1
Male	28		8		1
Adult	22		6		1
Adult Male	21		6		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	14		6		2
Male	14		6		2
Adult	12		4		1
Adult Male	12		4		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	41	28.5	69.51	165.9	1605.2	1771.1
Standard	10	6	60	85	1610.7	1695.7
Rapid	14	9	64.29	121.4	1628.1	1749.5
Blitz	17	13.5	79.41	250	1583.2	1833.2
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	41	28.5	69.51	165.9	1605.2	1771.1
Standard	10	6	60	85	1610.7	1695.7
Rapid	14	9	64.29	121.4	1628.1	1749.5
Blitz	17	13.5	79.41	250	1583.2	1833.2

Date	Main	Standard	Rapid	Blitz
2025-11-01	1996.6	2020.2	2019.9	2040.4
2025-09-30	2046.3	2067	2053.5	2064.8
2025-09-01	2046.3	2067	2053.5	2064.8
2025-08-01	2067.6	2094	2053.5	2064.8
2025-07-01	2067.6	2094	2047.6	2064.8
2025-06-01	2067.6	2094	2047.6	2064.8
2025-05-01	2094	2094	2094	2094
2025-04-01	2094	2094	2094	2094
2025-03-01	2094	2094	2094	2094
2025-02-01	2094	2094	2094	2094
2025-01-01	2094	2094	2094	2094
2024-12-01	2094	2094	2094	2094
2024-11-01	2094	2094	2094	2094
2024-10-01	2094	2094	2094	2094
2024-09-01	2094	2094	2094	2094
2024-08-01	2094	2094	2094	2094
2024-07-01	2094	2094	2094	2094
2024-09-01	2094	2094	2094	2094
2024-05-01	2094	2094	2094	2094
2024-04-01	2094	2094	2094	2094
2024-03-01	2094	2094	2094	2094
2024-02-01	2094	2094	2094	2094
2024-01-01	2094	2094	2094	2094
2023-12-01	1200	1200	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	Eden League 2025 (Premier Division)	2025-10-11	2025-10-11	Standard	Eden (WEG)	5	5	2.5	Yes	Analysis
2	2025 Mossel Bay Open (Rapid A)	2025-10-04	2025-10-04	Rapid	Eden (WEG)	7	7	4.5	Yes	Analysis
3	2025 Mossel Bay Open (Blitz)	2025-10-03	2025-10-03	Blitz	Eden (WEG)	9	9	7	Yes	Analysis
4	2025 Eden Open & Women's Tournament (Championship)	2025-08-23	2025-08-23	Standard	Eden (WEG)	5	5	3.5	Yes	Analysis
5	InterClub Blitz 2 2025	2025-05-08	2025-05-08	Blitz	Eden (WEG)	10	8	6.5	Yes	Analysis
6	Southern Knights Rapid 2025 (Open)	2025-05-03	2025-05-03	Rapid	Eden (WEG)	7	7	4.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Eden League 2025 (Premier Division)	2025-10-11	2025-10-11	Standard	Eden (WEG)	5	5	2.5	Yes	Analysis
2	2025 Mossel Bay Open (Rapid A)	2025-10-04	2025-10-04	Rapid	Eden (WEG)	7	7	4.5	Yes	Analysis
3	2025 Mossel Bay Open (Blitz)	2025-10-03	2025-10-03	Blitz	Eden (WEG)	9	9	7	Yes	Analysis
4	2025 Eden Open & Women's Tournament (Championship)	2025-08-23	2025-08-23	Standard	Eden (WEG)	5	5	3.5	Yes	Analysis
5	InterClub Blitz 2 2025	2025-05-08	2025-05-08	Blitz	Eden (WEG)	10	8	6.5	Yes	Analysis
6	Southern Knights Rapid 2025 (Open)	2025-05-03	2025-05-03	Rapid	Eden (WEG)	7	7	4.5	Yes	Analysis

#	Games	Start				End
1	7	Tournament Southern Knights Rapid 2025				Tournament InterClub Blitz 2 2025
		date 2025-05-03	rnd 6	type Rapid	result 1	date 2025-05-08	rnd 7	type Blitz	result 0.5
		Opponent Swart, S (Sune)				Opponent Nortje, P (Pieter)
2	5	Tournament InterClub Blitz 2 2025				Tournament 2025 Eden Open & Women's Tournament
		date 2025-05-08	rnd 9	type Blitz	result 1	date 2025-08-23	rnd 3	type Standard	result 0.5
		Opponent Simon, R (Riley)				Opponent Michaels, A (Antonio)
3	4	Tournament 2025 Mossel Bay Open				Tournament 2025 Mossel Bay Open
		date 2025-10-03	rnd 8	type Blitz	result 1	date 2025-10-04	rnd 2	type Rapid	result 1
		Opponent Swart, S (Sune)				Opponent Swart, S (Sune)

#	Games	Start				End
1	3	Tournament 2025 Eden Open & Women's Tournament				Tournament 2025 Eden Open & Women's Tournament
		date 2025-08-23	rnd 1	type Standard	result 1	date 2025-08-23	rnd 3	type Standard	result 0.5
		Opponent Cornforth, RM (Rodney)				Opponent Michaels, A (Antonio)
2	1	Tournament 2025 Eden Open & Women's Tournament				Tournament 2025 Eden Open & Women's Tournament
		date 2025-08-23	rnd 5	type Standard	result 1	date 2025-08-23	rnd 5	type Standard	result 1
		Opponent Nortje, P (Pieter)				Opponent Nortje, P (Pieter)

#	Games	Start				End
1	3	Tournament Southern Knights Rapid 2025				Tournament Southern Knights Rapid 2025
		date 2025-05-03	rnd 1	type Rapid	result 1	date 2025-05-03	rnd 3	type Rapid	result 0.5
		Opponent Coleman, A (Anthony)				Opponent Van Heerden, CL (Claude Leon)
2	2	Tournament Southern Knights Rapid 2025				Tournament Southern Knights Rapid 2025
		date 2025-05-03	rnd 6	type Rapid	result 1	date 2025-05-03	rnd 7	type Rapid	result 1
		Opponent Swart, S (Sune)				Opponent Scheepers, J (Jonathan)

#	Games	Start				End
1	5	Tournament InterClub Blitz 2 2025				Tournament InterClub Blitz 2 2025
		date 2025-05-08	rnd 1	type Blitz	result 1	date 2025-05-08	rnd 7	type Blitz	result 0.5
		Opponent Kerspuy, G (Gurswin)				Opponent Nortje, P (Pieter)
2	2	Tournament InterClub Blitz 2 2025				Tournament InterClub Blitz 2 2025
		date 2025-05-08	rnd 9	type Blitz	result 1	date 2025-05-08	rnd 10	type Blitz	result 1
		Opponent Simon, R (Riley)				Opponent Simon, R (Riley)

#	Games	Start				End
1	6	Tournament Southern Knights Rapid 2025				Tournament InterClub Blitz 2 2025
		date 2025-05-03	rnd 6	type Rapid	result 1	date 2025-05-08	rnd 6	type Blitz	result 1
		Opponent Swart, S (Sune)				Opponent Brewis, S (Sienna)
2	4	Tournament InterClub Blitz 2 2025				Tournament 2025 Eden Open & Women's Tournament
		date 2025-05-08	rnd 9	type Blitz	result 1	date 2025-08-23	rnd 2	type Standard	result 1
		Opponent Simon, R (Riley)				Opponent Botes, R (Renier)
3	2	Tournament Southern Knights Rapid 2025				Tournament Southern Knights Rapid 2025
		date 2025-05-03	rnd 1	type Rapid	result 1	date 2025-05-03	rnd 2	type Rapid	result 1
		Opponent Coleman, A (Anthony)				Opponent Nortje, P (Pieter)

#	Games	Start				End
1	2	Tournament 2025 Eden Open & Women's Tournament				Tournament 2025 Eden Open & Women's Tournament
		date 2025-08-23	rnd 1	type Standard	result 1	date 2025-08-23	rnd 2	type Standard	result 1
		Opponent Cornforth, RM (Rodney)				Opponent Botes, R (Renier)
2	1	Tournament 2025 Eden Open & Women's Tournament				Tournament 2025 Eden Open & Women's Tournament
		date 2025-08-23	rnd 5	type Standard	result 1	date 2025-08-23	rnd 5	type Standard	result 1
		Opponent Nortje, P (Pieter)				Opponent Nortje, P (Pieter)

#	Games	Start				End
1	2	Tournament Southern Knights Rapid 2025				Tournament Southern Knights Rapid 2025
		date 2025-05-03	rnd 6	type Rapid	result 1	date 2025-05-03	rnd 7	type Rapid	result 1
		Opponent Swart, S (Sune)				Opponent Scheepers, J (Jonathan)
2	2	Tournament Southern Knights Rapid 2025				Tournament Southern Knights Rapid 2025
		date 2025-05-03	rnd 1	type Rapid	result 1	date 2025-05-03	rnd 2	type Rapid	result 1
		Opponent Coleman, A (Anthony)				Opponent Nortje, P (Pieter)

#	Games	Start				End
1	4	Tournament InterClub Blitz 2 2025				Tournament InterClub Blitz 2 2025
		date 2025-05-08	rnd 1	type Blitz	result 1	date 2025-05-08	rnd 6	type Blitz	result 1
		Opponent Kerspuy, G (Gurswin)				Opponent Brewis, S (Sienna)
2	2	Tournament InterClub Blitz 2 2025				Tournament InterClub Blitz 2 2025
		date 2025-05-08	rnd 9	type Blitz	result 1	date 2025-05-08	rnd 10	type Blitz	result 1
		Opponent Simon, R (Riley)				Opponent Simon, R (Riley)

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	Nortje ,P (Pieter)	4	2.5	106.2	1	1	425	1	1	425	2	0.5	-212.5
1	Nortje ,P (Pieter)	4	1552.4	1658.7	1	1527.5	1977.4	1	1397.2	1977.4	2	1428.3	1339.9
2	Swart ,S (Sune)	3	3	425	0	0	0	2	2	425	1	1	425
2	Swart ,S (Sune)	3	1564	1989	0	0	0	2	1319	1989	1	1445.1	1989
3	Botes ,R (Renier)	2	2	425	1	1	425	1	1	425	0	0	0
3	Botes ,R (Renier)	2	1524.5	1949.5	1	1505.3	1949.5	1	1320.3	1949.5	0	0	0
4	Borrett ,R (Ryan)	2	0.5	-212.5	1	0.5	0	1	0	-425	0	0	0
4	Borrett ,R (Ryan)	2	1685.1	1472.6	1	1633.2	1685.1	1	1599.1	1260.1	0	0	0
5	Swart ,G (George)	2	0	-425	1	0	-425	1	0	-425	0	0	0
5	Swart ,G (George)	2	1783.9	1358.9	1	1801.4	1358.9	1	1598.4	1358.9	0	0	0
6	Cloete ,R (Ralph)	2	2	425	1	1	425	0	0	0	1	1	425
6	Cloete ,R (Ralph)	2	1552.2	1977.2	1	1573.2	1977.2	0	0	0	1	1326.3	1977.2
7	Michaels ,A (Antonio)	2	1.5	212.5	1	0.5	0	0	0	0	1	1	425
7	Michaels ,A (Antonio)	2	1788.3	2000.8	1	1739.8	1788.3	0	0	0	1	1719.5	2213.3
8	Van Heerden ,CL (Claude Leon)	2	1.5	212.5	0	0	0	1	0.5	0	1	1	425
8	Van Heerden ,CL (Claude Leon)	2	1654.2	1866.8	0	0	0	1	1630.1	1654.2	1	1716.9	2079.2
9	Kerspuy ,G (Gurswin)	2	2	425	0	0	0	0	0	0	2	2	425
9	Kerspuy ,G (Gurswin)	2	1316.5	1741.5	0	0	0	0	0	0	2	1211.7	1741.5
10	Simon ,R (Riley)	2	2	425	0	0	0	0	0	0	2	2	425
10	Simon ,R (Riley)	2	1710.2	2135.2	0	0	0	0	0	0	2	1333.4	2135.2

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Coetzer, PWJ (Pieter Wilhelm)

Ratings

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Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms