Chess South Africa Ratings Database

PLAYER PAGE

Personal

Coetzee, W (Willie)

Chess SA id

1150302145

FIDE id

Date of birth

2015-01-08 (U12)

Gender

Male

Region

Bojanala Platina (NBR)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-03-01

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1149.2	1163.1	1161.1	1200
Raw rating	1149.2	1163.1	1161.1	1200
Weighted rating	1144.8	1160.5	1155.4	1200
Weighted performance	942.2	1002.1	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	178.3	174.8	175.3	165.8
Highest rating	1200 2024-04-01	1200 2024-04-01	1200 2024-05-01	1200 2024-05-01
Highest raw rating	1200 2024-04-01	1200 2024-04-01	1200 2024-05-01	1200 2024-05-01
Highest weighted rating	1200 2024-04-01	1200 2024-04-01	1200 2024-05-01	1200 2024-05-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2024-05-01	1200 2024-05-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1149.2	1163.1	1161.1	1200
Analysis
Rating	1149.2	1163.1	1161.1	1200
Raw rating	1149.2	1163.1	1161.1	1200
Weighted rating	1144.8	1160.5	1155.4
Weighted performance	942.2	1002.1	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	178.3	174.8	175.3	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	1149.2	1163.1	1161.1	1200
New weighted rating	1144.5	1160.4	1155.1	1200
New weighted performance	941.8	1001.7	0	0
Temp new rating	1149.2	1163.1	1161.1	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1149.2	1163.1	1161.1	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	5	5	0
	35	28	7
	0	0	0
	0	0	0
	0	0	0
History	40	33	7

Games since
	Main 40	Standard 33		Rapid 7		Blitz 0
Gender	Male
Age group	U12
Region	Bojanala Platina (NBR)
Province	Northwest (NW)
Main
	RSA		Province		Region
Overall	4257		234		187
Male	3157		188		148
U12	732		44		38
U12 Male	495		32		26
Standard
	RSA		Province		Region
Overall	4152		283		203
Male	3079		227		162
U12	688		51		42
U12 Male	471		39		30
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 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	5	1	20	-255	1276.1	1021.1
Standard	5	1	20	-255	1276.1	1021.1
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	40	12.5	31.25	-159.4	1222.3	1062.9
Standard	33	11.5	34.85	-128.8	1227.1	1098.3
Rapid	7	1	14.29	-303.6	1199.7	896.1
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1149.2	1163.1	1161.1	1200
2025-09-01	1149.2	1163.1	1161.1	1200
2025-08-01	1149.2	1163.1	1161.1	1200
2025-07-01	1149.2	1163.1	1161.1	1200
2025-06-01	1149.2	1163.1	1161.1	1200
2025-05-01	1149.2	1163.1	1161.1	1200
2025-04-01	1149	1161.9	1161.1	1200
2025-03-01	1152	1165.4	1161.1	1200
2025-02-01	1150.7	1165.4	1158.2	1200
2025-01-01	1114.7	1154.8	1102.8	1200
2024-12-01	1114.7	1154.8	1102.8	1200
2024-11-01	1114.7	1154.8	1102.8	1200
2024-10-01	1114.7	1154.8	1102.8	1200
2024-09-01	1114.7	1154.8	1102.8	1200
2024-08-01	1193.3	1197.6	1200	1200
2024-07-01	1102.7	1081.6	1200	1200
2024-06-01	1102.7	1081.6	1200	1200
2024-08-01	1170.1	1160	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	1200
2023-11-01	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	Bojanala Circuit Championships 1 of 4 2025 (U12)	2025-03-01	2025-03-01	Standard	Bojanala Platina (NBR)	5	5	1	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Bojanala Circuit Championships 1 of 4 2025 (U12)	2025-03-01	2025-03-01	Standard	Bojanala Platina (NBR)	5	5	1	Yes	Analysis
2	Bojanala's FIDE In The Sparkling Waters 2024 (Junior Champs)	2024-08-17	2024-08-17	Standard	Bojanala Platina (NBR)	5	3	0	Yes	Analysis
3	Bojanala's Kings & Queens Rapid and Doubles 2024 (Open)	2024-08-10	2024-08-10	Rapid	Bojanala Platina (NBR)	7	7	1	Yes	Analysis
4	Bojanala's Clash Of Schools 2024 (U9)	2024-07-20	2024-07-20	Standard	Bojanala Platina (NBR)	5	5	2.5	Yes	Analysis
5	Hamakom's Pioneers Of The Board 2024 (Center Pawns)	2024-07-13	2024-07-13	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
6	Bojanala Circuit Championship 1 of 4 2024 (U10)	2024-05-25	2024-05-25	Standard	Bojanala Platina (NBR)	5	5	1.5	Yes	Analysis
7	Schoemies' Kwaggarus Chess Getaway 2024 (Senior)	2024-05-18	2024-05-18	Standard	Bojanala Platina (NBR)	5	5	0.5	Yes	Analysis
8	Bojanala Olienpark's One For The Ages 2024 (Center Pawns)	2024-04-20	2024-04-20	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis

#	Games	Start				End
1	5	Tournament Hamakom's Pioneers Of The Board 2024				Tournament Bojanala's Clash Of Schools 2024
		date 2024-07-13	rnd 2	type Standard	result 1	date 2024-07-20	rnd 1	type Standard	result 1
		Opponent Vorster, S (Salmerie)				Opponent Van Rensburg, L (Levi)
2	2	Tournament Bojanala Circuit Championship 1 of 4 2024				Tournament Bojanala Circuit Championship 1 of 4 2024
		date 2024-05-25	rnd 2	type Standard	result 0.5	date 2024-05-25	rnd 3	type Standard	result 1
		Opponent Grobler, X (Xander)				Opponent Zoellner, T (Thomas Martin)
3	1	Tournament Bojanala Circuit Championships 1 of 4 2025				Tournament Bojanala Circuit Championships 1 of 4 2025
		date 2025-03-01	rnd 4	type Standard	result 1	date 2025-03-01	rnd 4	type Standard	result 1
		Opponent Jansen, D (Dihann)				Opponent Jansen, D (Dihann)

#	Games	Start				End
1	5	Tournament Hamakom's Pioneers Of The Board 2024				Tournament Bojanala's Clash Of Schools 2024
		date 2024-07-13	rnd 2	type Standard	result 1	date 2024-07-20	rnd 1	type Standard	result 1
		Opponent Vorster, S (Salmerie)				Opponent Van Rensburg, L (Levi)
2	2	Tournament Bojanala Circuit Championship 1 of 4 2024				Tournament Bojanala Circuit Championship 1 of 4 2024
		date 2024-05-25	rnd 2	type Standard	result 0.5	date 2024-05-25	rnd 3	type Standard	result 1
		Opponent Grobler, X (Xander)				Opponent Zoellner, T (Thomas Martin)
3	1	Tournament Bojanala Circuit Championships 1 of 4 2025				Tournament Bojanala Circuit Championships 1 of 4 2025
		date 2025-03-01	rnd 4	type Standard	result 1	date 2025-03-01	rnd 4	type Standard	result 1
		Opponent Jansen, D (Dihann)				Opponent Jansen, D (Dihann)

#	Games	Start				End
1	1	Tournament Bojanala's Kings & Queens Rapid and Doubles 2024				Tournament Bojanala's Kings & Queens Rapid and Doubles 2024
		date 2024-08-10	rnd 4	type Rapid	result 1	date 2024-08-10	rnd 4	type Rapid	result 1
		Opponent Zwane, K (Koketso)				Opponent Zwane, K (Koketso)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Hamakom's Pioneers Of The Board 2024				Tournament Bojanala's Clash Of Schools 2024
		date 2024-07-13	rnd 2	type Standard	result 1	date 2024-07-20	rnd 1	type Standard	result 1
		Opponent Vorster, S (Salmerie)				Opponent Van Rensburg, L (Levi)
2	1	Tournament Bojanala Circuit Championships 1 of 4 2025				Tournament Bojanala Circuit Championships 1 of 4 2025
		date 2025-03-01	rnd 4	type Standard	result 1	date 2025-03-01	rnd 4	type Standard	result 1
		Opponent Jansen, D (Dihann)				Opponent Jansen, D (Dihann)
3	1	Tournament Bojanala's Kings & Queens Rapid and Doubles 2024				Tournament Bojanala's Kings & Queens Rapid and Doubles 2024
		date 2024-08-10	rnd 4	type Rapid	result 1	date 2024-08-10	rnd 4	type Rapid	result 1
		Opponent Zwane, K (Koketso)				Opponent Zwane, K (Koketso)

#	Games	Start				End
1	5	Tournament Hamakom's Pioneers Of The Board 2024				Tournament Bojanala's Clash Of Schools 2024
		date 2024-07-13	rnd 2	type Standard	result 1	date 2024-07-20	rnd 1	type Standard	result 1
		Opponent Vorster, S (Salmerie)				Opponent Van Rensburg, L (Levi)
2	1	Tournament Bojanala Circuit Championships 1 of 4 2025				Tournament Bojanala Circuit Championships 1 of 4 2025
		date 2025-03-01	rnd 4	type Standard	result 1	date 2025-03-01	rnd 4	type Standard	result 1
		Opponent Jansen, D (Dihann)				Opponent Jansen, D (Dihann)
3	1	Tournament Bojanala's Clash Of Schools 2024				Tournament Bojanala's Clash Of Schools 2024
		date 2024-07-20	rnd 5	type Standard	result 1	date 2024-07-20	rnd 5	type Standard	result 1
		Opponent Molefe, M (Mphoentle)				Opponent Molefe, M (Mphoentle)

#	Games	Start				End
1	1	Tournament Bojanala's Kings & Queens Rapid and Doubles 2024				Tournament Bojanala's Kings & Queens Rapid and Doubles 2024
		date 2024-08-10	rnd 4	type Rapid	result 1	date 2024-08-10	rnd 4	type Rapid	result 1
		Opponent Zwane, K (Koketso)				Opponent Zwane, K (Koketso)

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	Smit ,H (Hesmia)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Smit ,H (Hesmia)	2	1196.1	771.1	2	1186.9	771.1	0	0	0	0	0	0
2	Grobler ,X (Xander)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
2	Grobler ,X (Xander)	2	1271.6	1059.1	2	1283	1059.1	0	0	0	0	0	0
3	Jansen ,D (Dihann)	2	2	425	2	2	425	0	0	0	0	0	0
3	Jansen ,D (Dihann)	2	1216.4	1641.4	2	1215.8	1641.4	0	0	0	0	0	0
4	Sprague ,C (Chloe)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Sprague ,C (Chloe)	2	1182.3	757.3	2	1178.2	757.3	0	0	0	0	0	0
5	Zoellner ,T (Thomas Martin)	1	1	425	1	1	425	0	0	0	0	0	0
5	Zoellner ,T (Thomas Martin)	1	1169.1	1594.1	1	1163.6	1594.1	0	0	0	0	0	0
6	Kalala ,B (Beni)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Kalala ,B (Beni)	1	1161.7	736.7	1	1169.2	736.7	0	0	0	0	0	0
7	Van Rensburg ,L (Levi)	1	1	425	1	1	425	0	0	0	0	0	0
7	Van Rensburg ,L (Levi)	1	1215	1640	1	1204	1640	0	0	0	0	0	0
8	Murungweni ,I (Isheanesu)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Murungweni ,I (Isheanesu)	1	1267.1	842.1	1	1243.6	842.1	0	0	0	0	0	0
9	Bossert ,P (Petrus Albertus)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Bossert ,P (Petrus Albertus)	1	1228.8	803.8	1	1188	803.8	0	0	0	0	0	0
10	Kruger ,T (Thinus Pieter)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Kruger ,T (Thinus Pieter)	1	1344.7	919.7	1	1346.2	919.7	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Coetzee, W (Willie)

Ratings

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Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms