Chess South Africa Ratings Database

PLAYER PAGE

Personal

Coetzee, S (Stian)

Chess SA id

1150319286

FIDE id

Date of birth

2015-10-16 (U12)

Gender

Male

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-02

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1191.9	1199.9	1187.4	1200
Raw rating	1148.8	1199.9	1119.7	1200
Weighted rating	1191.9	1199.9	1187.4	1200
Weighted performance	0	0	0	0
Floor	699.9	699.9	700	700
K-factor	40	40	36	36
Min/Max rating change allowed	178.4	165.8	185.9	165.8
Highest rating	1199.9 2025-08-01	1199.9 2025-04-14	1200 2025-05-05	1200 2025-05-05
Highest raw rating	1199.9 2025-08-01	1199.9 2025-04-14	1200 2025-05-05	1200 2025-05-05
Highest weighted rating	1199.9 2025-08-01	1199.9 2025-04-14	1200 2025-05-05	1200 2025-05-05
Highest weighted performance	0 1900-01-01	0 1900-01-01	0 1900-01-01	0 1900-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-3.8	0	-5.9	0
New rating	1188.1	1199.9	1181.5	1200
Analysis
Rating	1191.9	1199.9	1187.4	1200
Raw rating	1148.8	1199.9	1119.7	1200
Weighted rating	1191.9	1199.9	1187.4
Weighted performance	0	0	0
K-factor	40	40	36	36
Floor	699.9	699.9	700	700
Max/Min rating change allowed	178.4	165.8	185.9	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	1148.8	1199.9	1119.7	1200
New weighted rating	1188.1	1199.9	1181.5	1200
New weighted performance	0	0	0	0
Temp new rating	1188.1	1199.9	1181.5	1200
Temp new rating +/-	-3.8	0	-5.9	0
Final new rating +/-	-3.8	0	-5.9	0
New rating	1188.1	1199.9	1181.5	1200
New K-factor	40	40	36	36
New floor	699.9	699.9	700	700

Item	Main	Standard	Rapid
	0	0	0
	12	5	7
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	12	5	7

Games since
	Main 12	Standard 5		Rapid 7		Blitz 0
Gender	Male
Age group	U12
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
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	12	3	25	-212.5	1245.4	1032.9
Standard	5	2	40	-85	1235.7	1150.7
Rapid	7	1	14.29	-303.6	1252.3	948.7
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	12	3	25	-212.5	1245.4	1032.9
Standard	5	2	40	-85	1235.7	1150.7
Rapid	7	1	14.29	-303.6	1252.3	948.7
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1148.8	1199.9	1119.7	1200
2025-09-01	1148.8	1199.9	1119.7	1200
2025-08-01	1199.9	1199.9	1200	1200
2025-07-01	1199.9	1199.9	1200	1200
2025-06-01	1199.9	1199.8	1200	1200
2025-05-01	1199.1	1198.6	1200	1200
2025-04-01	1200	1200	1200	1200
2025-03-01	1200	1200	1200	1200
2025-02-01	1200	1200	1200	1200
2025-01-01	1200	1200	1200	1200
2024-12-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-10-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-06-01	1200	1200	1200	1200
2024-08-01	1200	1200	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	Benoni Primary School Cluster Teams 2025 (U11A)	2025-08-02	2025-08-02	Rapid	Ekurhuleni (GE)	7	7	1	Yes	Analysis
2	Benoni Primary School Cluster 12 April 2025 (U11 Open)	2025-04-12	2025-04-12	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Benoni Primary School Cluster Teams 2025 (U11A)	2025-08-02	2025-08-02	Rapid	Ekurhuleni (GE)	7	7	1	Yes	Analysis
2	Benoni Primary School Cluster 12 April 2025 (U11 Open)	2025-04-12	2025-04-12	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis

#	Games	Start				End
1	3	Tournament Benoni Primary School Cluster 12 April 2025				Tournament Benoni Primary School Cluster 12 April 2025
		date 2025-04-12	rnd 1	type Standard	result 0.5	date 2025-04-12	rnd 3	type Standard	result 1
		Opponent Marais, S (Sj)				Opponent Smith, E (Ethan)
2	1	Tournament Benoni Primary School Cluster Teams 2025				Tournament Benoni Primary School Cluster Teams 2025
		date 2025-08-02	rnd 3	type Rapid	result 1	date 2025-08-02	rnd 3	type Rapid	result 1
		Opponent Mans, Z (Zander)				Opponent Mans, Z (Zander)

#	Games	Start				End
1	3	Tournament Benoni Primary School Cluster 12 April 2025				Tournament Benoni Primary School Cluster 12 April 2025
		date 2025-04-12	rnd 1	type Standard	result 0.5	date 2025-04-12	rnd 3	type Standard	result 1
		Opponent Marais, S (Sj)				Opponent Smith, E (Ethan)

#	Games	Start				End
1	1	Tournament Benoni Primary School Cluster Teams 2025				Tournament Benoni Primary School Cluster Teams 2025
		date 2025-08-02	rnd 3	type Rapid	result 1	date 2025-08-02	rnd 3	type Rapid	result 1
		Opponent Mans, Z (Zander)				Opponent Mans, Z (Zander)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Benoni Primary School Cluster Teams 2025				Tournament Benoni Primary School Cluster Teams 2025
		date 2025-08-02	rnd 3	type Rapid	result 1	date 2025-08-02	rnd 3	type Rapid	result 1
		Opponent Mans, Z (Zander)				Opponent Mans, Z (Zander)
2	1	Tournament Benoni Primary School Cluster 12 April 2025				Tournament Benoni Primary School Cluster 12 April 2025
		date 2025-04-12	rnd 3	type Standard	result 1	date 2025-04-12	rnd 3	type Standard	result 1
		Opponent Smith, E (Ethan)				Opponent Smith, E (Ethan)

#	Games	Start				End
1	1	Tournament Benoni Primary School Cluster 12 April 2025				Tournament Benoni Primary School Cluster 12 April 2025
		date 2025-04-12	rnd 3	type Standard	result 1	date 2025-04-12	rnd 3	type Standard	result 1
		Opponent Smith, E (Ethan)				Opponent Smith, E (Ethan)

#	Games	Start				End
1	1	Tournament Benoni Primary School Cluster Teams 2025				Tournament Benoni Primary School Cluster Teams 2025
		date 2025-08-02	rnd 3	type Rapid	result 1	date 2025-08-02	rnd 3	type Rapid	result 1
		Opponent Mans, Z (Zander)				Opponent Mans, Z (Zander)

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	Coetzee ,O (Oliver)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
1	Coetzee ,O (Oliver)	1	1256.3	1256.3	1	1217.3	1256.3	0	0	0	0	0	0
2	Marais ,S (Sj)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
2	Marais ,S (Sj)	1	1270.8	1270.8	1	1260.2	1270.8	0	0	0	0	0	0
3	Tee ,J (Johnathan)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Tee ,J (Johnathan)	1	1211	786	1	1200	786	0	0	0	0	0	0
4	Van Wyk ,N (Nathan)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Van Wyk ,N (Nathan)	1	1223.8	798.8	1	1216.2	798.8	0	0	0	0	0	0
5	Smith ,E (Ethan)	1	1	425	1	1	425	0	0	0	0	0	0
5	Smith ,E (Ethan)	1	1216.5	1641.5	1	1194.2	1641.5	0	0	0	0	0	0
6	Venter ,L (Luan)	1	0	-425	0	0	0	1	0	-425	0	0	0
6	Venter ,L (Luan)	1	1347.8	922.8	0	0	0	1	1402.5	922.8	0	0	0
7	Mohale ,M (Mandla)	1	0	-425	0	0	0	1	0	-425	0	0	0
7	Mohale ,M (Mandla)	1	1190.7	765.7	0	0	0	1	1200	765.7	0	0	0
8	Subroyan ,I (Isaac)	1	0	-425	0	0	0	1	0	-425	0	0	0
8	Subroyan ,I (Isaac)	1	1204.5	779.5	0	0	0	1	1200	779.5	0	0	0
9	Chueu ,T (Tio)	1	0	-425	0	0	0	1	0	-425	0	0	0
9	Chueu ,T (Tio)	1	1302.2	877.2	0	0	0	1	1200	877.2	0	0	0
10	Michel ,N (Nazario)	1	0	-425	0	0	0	1	0	-425	0	0	0
10	Michel ,N (Nazario)	1	1305.4	880.4	0	0	0	1	1244.8	880.4	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

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Statistics

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PLAYER PAGE

Personal

Coetzee, S (Stian)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms