Chess South Africa Ratings Database

PLAYER PAGE

Personal

Coetser, W (Wian)

Chess SA id

1100301182

FIDE id

Date of birth

2010-09-24 (U16)

Gender

Male

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-02-15

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1196.8	1199.9	1191.7	1200
Raw rating	1196.8	1199.9	1191.7	1200
Weighted rating	1196.5	1199.9	1190.8	1200
Weighted performance	0	0	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	166.6	165.8	167.8	165.8
Highest rating	1200 2024-03-01	1200 2024-04-01	1200 2024-03-01	1200 2024-04-01
Highest raw rating	1200 2024-03-01	1200 2024-04-01	1200 2024-03-01	1200 2024-04-01
Highest weighted rating	1200 2024-03-01	1200 2024-04-01	1200 2024-03-01	1200 2024-04-01
Highest weighted performance	1200 2024-12-01	1200 2024-04-01	1200 2024-12-01	1200 2024-04-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1196.8	1199.9	1191.7	1200
Analysis
Rating	1196.8	1199.9	1191.7	1200
Raw rating	1196.8	1199.9	1191.7	1200
Weighted rating	1196.5	1199.9	1190.8
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	166.6	165.8	167.8	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	1196.8	1199.9	1191.7	1200
New weighted rating	1196.5	1199.9	1190.8	1200
New weighted performance	0	0	0	0
Temp new rating	1196.8	1199.9	1191.7	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1196.8	1199.9	1191.7	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	5	5	0
	5	0	5
	0	0	0
	0	0	0
	0	0	0
History	10	5	5

Games since
	Main 10	Standard 5		Rapid 5		Blitz 0
Gender	Male
Age group	U16
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
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	5	2	40	-85	1238.9	1153.9
Standard	5	2	40	-85	1238.9	1153.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	10	4	40	-85	1253.6	1168.6
Standard	5	2	40	-85	1238.9	1153.9
Rapid	5	2	40	-85	1268.3	1183.3
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1196.8	1199.9	1191.7	1200
2025-09-01	1196.8	1199.9	1191.7	1200
2025-08-01	1196.8	1199.9	1191.7	1200
2025-07-01	1196.8	1199.9	1191.7	1200
2025-06-01	1196.8	1199.9	1191.7	1200
2025-05-01	1196.8	1199.9	1191.7	1200
2025-04-01	1196.8	1199.9	1191.7	1200
2025-03-01	1196.2	1199.1	1191.7	1200
2025-02-01	1196.9	1200	1191.6	1200
2025-01-01	1195.6	1200	1188	1200
2024-12-01	1195.6	1200	1188	1200
2024-11-01	1195.6	1200	1188	1200
2024-10-01	1195.6	1200	1188	1200
2024-09-01	1195.6	1200	1188	1200
2024-08-01	1195.6	1200	1188	1200
2024-07-01	1195.6	1200	1188	1200
2024-06-01	1195.6	1200	1188	1200
2024-08-01	1195.6	1200	1188	1200
2024-04-01	1195.6	1200	1188	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 High School Cluster 15Feb 2025 (U15 Boys)	2025-02-15	2025-02-15	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 High School Cluster 15Feb 2025 (U15 Boys)	2025-02-15	2025-02-15	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
2	Benoni High Schools Cluster Individuals 2024 (U15 Boys)	2024-03-16	2024-03-16	Rapid	Ekurhuleni (GE)	5	5	2	Yes	Analysis

#	Games	Start				End
1	2	Tournament Benoni High School Cluster 15Feb 2025				Tournament Benoni High School Cluster 15Feb 2025
		date 2025-02-15	rnd 2	type Standard	result 1	date 2025-02-15	rnd 3	type Standard	result 1
		Opponent Mkonde, E (Emihle Owethu)				Opponent Matthews, J (James)
2	1	Tournament Benoni High Schools Cluster Individuals 2024				Tournament Benoni High Schools Cluster Individuals 2024
		date 2024-03-16	rnd 4	type Rapid	result 1	date 2024-03-16	rnd 4	type Rapid	result 1
		Opponent Seedat, I (Ismaeel)				Opponent Seedat, I (Ismaeel)
3	1	Tournament Benoni High Schools Cluster Individuals 2024				Tournament Benoni High Schools Cluster Individuals 2024
		date 2024-03-16	rnd 1	type Rapid	result 1	date 2024-03-16	rnd 1	type Rapid	result 1
		Opponent Skwatsha, S (Sipho)				Opponent Skwatsha, S (Sipho)

#	Games	Start				End
1	2	Tournament Benoni High School Cluster 15Feb 2025				Tournament Benoni High School Cluster 15Feb 2025
		date 2025-02-15	rnd 2	type Standard	result 1	date 2025-02-15	rnd 3	type Standard	result 1
		Opponent Mkonde, E (Emihle Owethu)				Opponent Matthews, J (James)

#	Games	Start				End
1	1	Tournament Benoni High Schools Cluster Individuals 2024				Tournament Benoni High Schools Cluster Individuals 2024
		date 2024-03-16	rnd 4	type Rapid	result 1	date 2024-03-16	rnd 4	type Rapid	result 1
		Opponent Seedat, I (Ismaeel)				Opponent Seedat, I (Ismaeel)
2	1	Tournament Benoni High Schools Cluster Individuals 2024				Tournament Benoni High Schools Cluster Individuals 2024
		date 2024-03-16	rnd 1	type Rapid	result 1	date 2024-03-16	rnd 1	type Rapid	result 1
		Opponent Skwatsha, S (Sipho)				Opponent Skwatsha, S (Sipho)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Benoni High School Cluster 15Feb 2025				Tournament Benoni High School Cluster 15Feb 2025
		date 2025-02-15	rnd 2	type Standard	result 1	date 2025-02-15	rnd 3	type Standard	result 1
		Opponent Mkonde, E (Emihle Owethu)				Opponent Matthews, J (James)
2	1	Tournament Benoni High Schools Cluster Individuals 2024				Tournament Benoni High Schools Cluster Individuals 2024
		date 2024-03-16	rnd 4	type Rapid	result 1	date 2024-03-16	rnd 4	type Rapid	result 1
		Opponent Seedat, I (Ismaeel)				Opponent Seedat, I (Ismaeel)
3	1	Tournament Benoni High Schools Cluster Individuals 2024				Tournament Benoni High Schools Cluster Individuals 2024
		date 2024-03-16	rnd 1	type Rapid	result 1	date 2024-03-16	rnd 1	type Rapid	result 1
		Opponent Skwatsha, S (Sipho)				Opponent Skwatsha, S (Sipho)

#	Games	Start				End
1	2	Tournament Benoni High School Cluster 15Feb 2025				Tournament Benoni High School Cluster 15Feb 2025
		date 2025-02-15	rnd 2	type Standard	result 1	date 2025-02-15	rnd 3	type Standard	result 1
		Opponent Mkonde, E (Emihle Owethu)				Opponent Matthews, J (James)

#	Games	Start				End
1	1	Tournament Benoni High Schools Cluster Individuals 2024				Tournament Benoni High Schools Cluster Individuals 2024
		date 2024-03-16	rnd 4	type Rapid	result 1	date 2024-03-16	rnd 4	type Rapid	result 1
		Opponent Seedat, I (Ismaeel)				Opponent Seedat, I (Ismaeel)
2	1	Tournament Benoni High Schools Cluster Individuals 2024				Tournament Benoni High Schools Cluster Individuals 2024
		date 2024-03-16	rnd 1	type Rapid	result 1	date 2024-03-16	rnd 1	type Rapid	result 1
		Opponent Skwatsha, S (Sipho)				Opponent Skwatsha, S (Sipho)

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	Mkonde ,E (Emihle Owethu)	1	1	425	1	1	425	0	0	0	0	0	0
1	Mkonde ,E (Emihle Owethu)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
2	Billing ,A (Aidin)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Billing ,A (Aidin)	1	1346.3	921.3	1	1311.7	921.3	0	0	0	0	0	0
3	Erasmus ,M (Max)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Erasmus ,M (Max)	1	1248.1	823.1	1	1299.6	823.1	0	0	0	0	0	0
4	Schiel ,Z (Zach Gregory)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Schiel ,Z (Zach Gregory)	1	1200	775	1	1200	775	0	0	0	0	0	0
5	Matthews ,J (James)	1	1	425	1	1	425	0	0	0	0	0	0
5	Matthews ,J (James)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
6	Botha ,T (Trevor Justus)	1	0	-425	0	0	0	1	0	-425	0	0	0
6	Botha ,T (Trevor Justus)	1	1216.7	791.7	0	0	0	1	1200	791.7	0	0	0
7	Skwatsha ,S (Sipho)	1	1	425	0	0	0	1	1	425	0	0	0
7	Skwatsha ,S (Sipho)	1	1303.3	1728.3	0	0	0	1	1246.8	1728.3	0	0	0
8	Posthumus ,T (Tristann)	1	0	-425	0	0	0	1	0	-425	0	0	0
8	Posthumus ,T (Tristann)	1	1265	840	0	0	0	1	1288.6	840	0	0	0
9	Smith ,H (Henre)	1	0	-425	0	0	0	1	0	-425	0	0	0
9	Smith ,H (Henre)	1	1356.4	931.4	0	0	0	1	1271.8	931.4	0	0	0
10	Seedat ,I (Ismaeel)	1	1	425	0	0	0	1	1	425	0	0	0
10	Seedat ,I (Ismaeel)	1	1200	1625	0	0	0	1	1200	1625	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Coetser, W (Wian)

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