Chess South Africa Ratings Database

PLAYER PAGE

Personal

Cotter, W (Wian)

Chess SA id

106056199

FIDE id

Date of birth

2006-09-04 (U20)

Gender

Male

Region

West Coast (WCU)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-07-29

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1144.6	808.8	959.6	590
Raw rating	1144.6	808.8	959.6	590
Weighted rating	1144.6	808.8	959.6	590
Weighted performance	833.4	0	0	0
Floor	644.6	500	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	179.4	289.5	233.5	395.4
Highest rating	1354.3 2022-10-01	1200 2019-12-01	1451.3 2022-10-01	1200 2024-02-01
Highest raw rating	1144.6 2024-02-01	808.8 2024-02-01	959.6 2024-02-01	590 2024-02-01
Highest weighted rating	1144.6 2024-11-01	808.8 2024-11-01	959.6 2024-11-01	590 2024-11-01
Highest weighted performance	1354.3 2022-10-01	1200 2019-12-01	1451.3 2022-10-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1144.6	808.8	959.6	590
Analysis
Rating	1144.6	808.8	959.6	590
Raw rating	1144.6	808.8	959.6	590
Weighted rating	1144.6	808.8	959.6
Weighted performance	833.4	0	0
K-factor	40	40	40	40
Floor	644.6	500	500	500
Max/Min rating change allowed	179.4	289.5	233.5	395.4
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	1144.6	808.8	959.6	590
New weighted rating	1144.6	808.8	959.6	590
New weighted performance	833	0	0	0
Temp new rating	1144.6	808.8	959.6	590
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1144.6	808.8	959.6	590
New K-factor	40	40	40	40
New floor	644.6	500	500	500

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	22	13	9
	6	0	6
	0	0	0
History	64	24	40

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U20
Region	West Coast (WCU)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 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	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
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	28	16	57.14	60.7	1216	1276.7
Standard	13	6	46.15	-32.7	1254.9	1222.2
Rapid	15	10	66.67	141.7	1182.3	1323.9
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1144.6	808.8	959.6	590
2025-09-01	1144.6	808.8	959.6	590
2025-08-01	1144.6	808.8	959.6	590
2025-07-01	1144.6	808.8	959.6	590
2025-06-01	1144.6	808.8	959.6	590
2025-05-01	1144.6	808.8	959.6	590
2025-04-01	1144.6	808.8	959.6	590
2025-03-01	1144.6	808.8	959.6	590
2025-02-01	1144.6	808.8	959.6	590
2025-01-01	1144.6	808.8	959.6	590
2024-12-01	1144.6	808.8	959.6	590
2024-11-01	1144.6	808.8	959.6	590
2024-10-01	1144.6	808.8	959.6	590
2024-09-01	1144.6	808.8	959.6	590
2024-08-01	1144.6	808.8	959.6	590
2024-07-01	1144.6	808.8	959.6	590
2024-06-01	1144.6	808.8	959.6	590
2024-08-01	1144.6	808.8	959.6	590
2024-04-01	1144.6	808.8	959.6	590
2024-03-01	1144.6	808.8	959.6	590
2024-02-01	1144.6	808.8	959.6	590
2024-01-01	1144.6	808.8	959.6	590
2023-12-01	1144.6	808.8	959.6	590
2023-11-01	1144.6	808.8	959.6	590

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Pedro Booyse Top Schools 2023 (High School)	2023-07-29	2023-07-29	Standard	West Coast (WCU)	5	1	0.5	Yes	Analysis
2	Lower West Coast Top Schools Championships 2023 (High School)	2023-06-10	2023-06-10	Rapid	West Coast (WCU)	5	4	2	Yes	Analysis
3	Western Cape HS Individuals 2023 (U17 Boys)	2023-04-01	2023-04-02	Standard	Cape Town (WCT)	6	6	2.5	Yes	Analysis
4	West Coast High School Championships 2023 (U17 Boys)	2023-02-18	2023-02-18	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
5	Lower West Coast High Schools Prestige 2023 (U17 Boys)	2023-02-11	2023-02-11	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
6	West Coast Schools Chess Grand Challenge 2022 (HS Development)	2022-10-29	2022-10-29	Rapid	West Coast (WCU)	6	6	5	Yes	Analysis

#	Games	Start				End
1	4	Tournament West Coast Schools Chess Grand Challenge 2022				Tournament Lower West Coast High Schools Prestige 2023
		date 2022-10-29	rnd 4	type Rapid	result 1	date 2023-02-11	rnd 1	type Rapid	result 1
		Opponent Nel, R (Roxaan)				Opponent Pretorius, W (Willem)
2	3	Tournament Lower West Coast High Schools Prestige 2023				Tournament West Coast High School Championships 2023
		date 2023-02-11	rnd 5	type Rapid	result 1	date 2023-02-18	rnd 2	type Standard	result 1
		Opponent Brickles, J (Jose)				Opponent Fillis, J (Jordan)
3	2	Tournament Lower West Coast Top Schools Championships 2023				Tournament Pedro Booyse Top Schools 2023
		date 2023-06-10	rnd 5	type Rapid	result 1	date 2023-07-29	rnd 5	type Standard	result 0.5
		Opponent Tieling, D (Denilhio)				Opponent Le Fleur, S (Shirano)

#	Games	Start				End
1	2	Tournament Western Cape HS Individuals 2023				Tournament Pedro Booyse Top Schools 2023
		date 2023-04-02	rnd 6	type Standard	result 1	date 2023-07-29	rnd 5	type Standard	result 0.5
		Opponent Wilson, J (Joshua)				Opponent Le Fleur, S (Shirano)
2	2	Tournament Western Cape HS Individuals 2023				Tournament Western Cape HS Individuals 2023
		date 2023-04-01	rnd 3	type Standard	result 1	date 2023-04-02	rnd 4	type Standard	result 0.5
		Opponent Moses, H (Heinrich)				Opponent Hall, G (Gregory)
3	2	Tournament West Coast High School Championships 2023				Tournament West Coast High School Championships 2023
		date 2023-02-18	rnd 4	type Standard	result 0.5	date 2023-02-18	rnd 5	type Standard	result 0.5
		Opponent Du Plessis, S (Stefan)				Opponent Bell, N (Neyo)

#	Games	Start				End
1	4	Tournament West Coast Schools Chess Grand Challenge 2022				Tournament Lower West Coast High Schools Prestige 2023
		date 2022-10-29	rnd 4	type Rapid	result 1	date 2023-02-11	rnd 1	type Rapid	result 1
		Opponent Nel, R (Roxaan)				Opponent Pretorius, W (Willem)
2	2	Tournament Lower West Coast High Schools Prestige 2023				Tournament Lower West Coast Top Schools Championships 2023
		date 2023-02-11	rnd 5	type Rapid	result 1	date 2023-06-10	rnd 1	type Rapid	result 1
		Opponent Brickles, J (Jose)				Opponent Fillis, J (Jordan)
3	2	Tournament West Coast Schools Chess Grand Challenge 2022				Tournament West Coast Schools Chess Grand Challenge 2022
		date 2022-10-29	rnd 1	type Rapid	result 1	date 2022-10-29	rnd 2	type Rapid	result 1
		Opponent Nel, R (Roxaan)				Opponent Claase, E (Evan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament West Coast Schools Chess Grand Challenge 2022				Tournament Lower West Coast High Schools Prestige 2023
		date 2022-10-29	rnd 4	type Rapid	result 1	date 2023-02-11	rnd 1	type Rapid	result 1
		Opponent Nel, R (Roxaan)				Opponent Pretorius, W (Willem)
2	3	Tournament Lower West Coast High Schools Prestige 2023				Tournament West Coast High School Championships 2023
		date 2023-02-11	rnd 5	type Rapid	result 1	date 2023-02-18	rnd 2	type Standard	result 1
		Opponent Brickles, J (Jose)				Opponent Fillis, J (Jordan)
3	2	Tournament Western Cape HS Individuals 2023				Tournament Lower West Coast Top Schools Championships 2023
		date 2023-04-02	rnd 6	type Standard	result 1	date 2023-06-10	rnd 1	type Rapid	result 1
		Opponent Wilson, J (Joshua)				Opponent Fillis, J (Jordan)

#	Games	Start				End
1	2	Tournament West Coast High School Championships 2023				Tournament West Coast High School Championships 2023
		date 2023-02-18	rnd 1	type Standard	result 1	date 2023-02-18	rnd 2	type Standard	result 1
		Opponent Filander, J (Jayrin)				Opponent Fillis, J (Jordan)
2	1	Tournament Western Cape HS Individuals 2023				Tournament Western Cape HS Individuals 2023
		date 2023-04-02	rnd 6	type Standard	result 1	date 2023-04-02	rnd 6	type Standard	result 1
		Opponent Wilson, J (Joshua)				Opponent Wilson, J (Joshua)
3	1	Tournament Western Cape HS Individuals 2023				Tournament Western Cape HS Individuals 2023
		date 2023-04-01	rnd 3	type Standard	result 1	date 2023-04-01	rnd 3	type Standard	result 1
		Opponent Moses, H (Heinrich)				Opponent Moses, H (Heinrich)

#	Games	Start				End
1	4	Tournament West Coast Schools Chess Grand Challenge 2022				Tournament Lower West Coast High Schools Prestige 2023
		date 2022-10-29	rnd 4	type Rapid	result 1	date 2023-02-11	rnd 1	type Rapid	result 1
		Opponent Nel, R (Roxaan)				Opponent Pretorius, W (Willem)
2	2	Tournament Lower West Coast High Schools Prestige 2023				Tournament Lower West Coast Top Schools Championships 2023
		date 2023-02-11	rnd 5	type Rapid	result 1	date 2023-06-10	rnd 1	type Rapid	result 1
		Opponent Brickles, J (Jose)				Opponent Fillis, J (Jordan)
3	2	Tournament West Coast Schools Chess Grand Challenge 2022				Tournament West Coast Schools Chess Grand Challenge 2022
		date 2022-10-29	rnd 1	type Rapid	result 1	date 2022-10-29	rnd 2	type Rapid	result 1
		Opponent Nel, R (Roxaan)				Opponent Claase, E (Evan)

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	Fillis ,J (Jordan)	2	2	425	1	1	425	1	1	425	0	0	0
1	Fillis ,J (Jordan)	2	1291.1	1716.1	1	1352.9	1716.1	1	1177.6	1716.1	0	0	0
2	Filander ,J (Jayrin)	2	1	0	1	1	425	1	0	-425	0	0	0
2	Filander ,J (Jayrin)	2	1210.1	1210.1	1	1260	1635.1	1	1121.2	785.1	0	0	0
3	Claase ,E (Evan)	2	2	425	0	0	0	2	2	425	0	0	0
3	Claase ,E (Evan)	2	1052.3	1477.3	0	0	0	2	1082	1477.3	0	0	0
4	Nel ,R (Roxaan)	2	2	425	0	0	0	2	2	425	0	0	0
4	Nel ,R (Roxaan)	2	1123.2	1548.2	0	0	0	2	1180.4	1548.2	0	0	0
5	Hendricks ,G (Guevante)	2	1	0	0	0	0	2	1	0	0	0	0
5	Hendricks ,G (Guevante)	2	1210.5	1210.5	0	0	0	2	1200	1210.5	0	0	0
6	Bell ,N (Neyo)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
6	Bell ,N (Neyo)	1	1203	1203	1	1183.5	1203	0	0	0	0	0	0
7	Cloete ,H (Howard)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Cloete ,H (Howard)	1	1225.9	800.9	1	969.2	800.9	0	0	0	0	0	0
8	Pietersen ,E (Enzalin)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Pietersen ,E (Enzalin)	1	1347.8	922.8	1	1356.6	922.8	0	0	0	0	0	0
9	Hall ,G (Gregory)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
9	Hall ,G (Gregory)	1	1264.3	1264.3	1	1239.2	1264.3	0	0	0	0	0	0
10	Wilson ,J (Joshua)	1	1	425	1	1	425	0	0	0	0	0	0
10	Wilson ,J (Joshua)	1	1251.2	1676.2	1	1207.4	1676.2	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Cotter, W (Wian)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms