Chess South Africa Ratings Database

PLAYER PAGE

Personal

De Koker, A (Andreas Stephanus)

Chess SA id

1140151359

FIDE id

Date of birth

2014-01-08 (U12)

Gender

Male

Region

Overberg (WOS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-03-16

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1206.9	1207	1200	1200
Raw rating	1206.9	1207	1200	1200
Weighted rating	1139.8	1126.8	1199.4	1200
Weighted performance	0	0	0	0
Floor	744.8	754.4	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	164.2	164.2	165.8	165.8
Highest rating	1451.5 2018-10-01	1453.4 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1244.8 2019-12-01	1254.4 2019-12-01	1200 2019-12-01	1200 2024-03-01
Highest weighted rating	1244.8 2018-10-01	1254.4 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1451.5 2019-12-01	1453.4 2019-12-01	1200 2019-12-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1206.9	1207	1200	1200
Analysis
Rating	1206.9	1207	1200	1200
Raw rating	1206.9	1207	1200	1200
Weighted rating	1139.8	1126.8	1199.4
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	744.8	754.4	700	700
Max/Min rating change allowed	164.2	164.2	165.8	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	1206.9	1207	1200	1200
New weighted rating	1145.9	1134.1	1199.4	1200
New weighted performance	0	0	0	0
Temp new rating	1206.9	1207	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1206.9	1207	1200	1200
New K-factor	36	36	36	36
New floor	744.8	754.4	700	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	5	5	0
	16	10	6
	0	0	0
	0	0	0
History	21	15	6

Games since
	Main 5	Standard 5		Rapid 0		Blitz 0
Gender	Male
Age group	U12
Region	Overberg (WOS)
Province	Western Cape (WC)
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	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	21	8	38.1	-101.2	1201.7	1100.5
Standard	15	5	33.33	-141.7	1196	1054.4
Rapid	6	3	50	0	1216	1216
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1206.9	1207	1200	1200
2025-09-01	1206.9	1207	1200	1200
2025-08-01	1206.9	1207	1200	1200
2025-07-01	1119.7	1102.8	1199.2	1200
2025-06-01	1119.7	1102.8	1199.2	1200
2025-05-01	1119.7	1102.8	1199.2	1200
2025-04-01	1119.7	1102.8	1199.2	1200
2025-03-01	1119.7	1102.8	1199.2	1200
2025-02-01	1119.7	1102.8	1199.2	1200
2025-01-01	1119.7	1102.8	1199.2	1200
2024-12-01	1119.7	1102.8	1199.2	1200
2024-11-01	1119.7	1102.8	1199.2	1200
2024-10-01	1119.7	1102.8	1199.2	1200
2024-09-01	1119.7	1102.8	1199.2	1200
2024-08-01	1119.7	1102.8	1199.2	1200
2024-07-01	1119.7	1102.8	1199.2	1200
2024-06-01	1119.7	1102.8	1199.2	1200
2024-08-01	1119.7	1102.8	1199.2	1200
2024-04-01	1119.7	1102.8	1199.2	1200
2024-03-01	1119.7	1102.8	1199.2	1200
2024-02-01	1119.7	1102.8	1199.2	1200
2024-01-01	1119.7	1102.8	1199.2	1200
2023-12-01	1119.7	1102.8	1199.2	1200
2023-11-01	1119.7	1102.8	1199.2	1200

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	Overberg Schools - PS Closed 2024 (U11 Boys)	2024-03-16	2024-03-16	Standard	Overberg (WOS)	5	5	1	Yes	Analysis
2	Overberg Top Schools 2023 (U7+U9)	2023-08-05	2023-08-05	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
3	Overberg School Chess Closed Tournament 2023 (U9 Boys)	2023-03-25	2023-03-25	Standard	Overberg (WOS)	5	5	0	Yes	Analysis
4	Overberg Schools Bredasdorp Zone Trails 2023 (U7+U9)	2023-02-16	2023-03-02	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis

#	Games	Start				End
1	4	Tournament Overberg Top Schools 2023				Tournament Overberg Top Schools 2023
		date 2023-08-05	rnd 2	type Standard	result 1	date 2023-08-05	rnd 5	type Standard	result 1
		Opponent Monroe, C (Chloe)				Opponent Le Roux, C (Carmen)
2	2	Tournament Overberg Schools Bredasdorp Zone Trails 2023				Tournament Overberg Schools Bredasdorp Zone Trails 2023
		date 2023-02-16	rnd 1	type Rapid	result 1	date 2023-02-16	rnd 2	type Rapid	result 0.5
		Opponent Stodart, D (Dani�l)				Opponent Van Eeden, C (Christian)
3	1	Tournament Overberg Schools - PS Closed 2024				Tournament Overberg Schools - PS Closed 2024
		date 2024-03-16	rnd 3	type Standard	result 1	date 2024-03-16	rnd 3	type Standard	result 1
		Opponent Coulsen, D (Danilo)				Opponent Coulsen, D (Danilo)

#	Games	Start				End
1	4	Tournament Overberg Top Schools 2023				Tournament Overberg Top Schools 2023
		date 2023-08-05	rnd 2	type Standard	result 1	date 2023-08-05	rnd 5	type Standard	result 1
		Opponent Monroe, C (Chloe)				Opponent Le Roux, C (Carmen)
2	1	Tournament Overberg Schools - PS Closed 2024				Tournament Overberg Schools - PS Closed 2024
		date 2024-03-16	rnd 3	type Standard	result 1	date 2024-03-16	rnd 3	type Standard	result 1
		Opponent Coulsen, D (Danilo)				Opponent Coulsen, D (Danilo)

#	Games	Start				End
1	2	Tournament Overberg Schools Bredasdorp Zone Trails 2023				Tournament Overberg Schools Bredasdorp Zone Trails 2023
		date 2023-02-16	rnd 1	type Rapid	result 1	date 2023-02-16	rnd 2	type Rapid	result 0.5
		Opponent Stodart, D (Dani�l)				Opponent Van Eeden, C (Christian)
2	1	Tournament Overberg Schools Bredasdorp Zone Trails 2023				Tournament Overberg Schools Bredasdorp Zone Trails 2023
		date 2023-03-02	rnd 6	type Rapid	result 0.5	date 2023-03-02	rnd 6	type Rapid	result 0.5
		Opponent Fredericks, A (Aneca)				Opponent Fredericks, A (Aneca)
3	1	Tournament Overberg Schools Bredasdorp Zone Trails 2023				Tournament Overberg Schools Bredasdorp Zone Trails 2023
		date 2023-03-02	rnd 4	type Rapid	result 1	date 2023-03-02	rnd 4	type Rapid	result 1
		Opponent Roeloffze, J (James)				Opponent Roeloffze, J (James)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Overberg Top Schools 2023				Tournament Overberg Top Schools 2023
		date 2023-08-05	rnd 2	type Standard	result 1	date 2023-08-05	rnd 5	type Standard	result 1
		Opponent Monroe, C (Chloe)				Opponent Le Roux, C (Carmen)
2	1	Tournament Overberg Schools - PS Closed 2024				Tournament Overberg Schools - PS Closed 2024
		date 2024-03-16	rnd 3	type Standard	result 1	date 2024-03-16	rnd 3	type Standard	result 1
		Opponent Coulsen, D (Danilo)				Opponent Coulsen, D (Danilo)
3	1	Tournament Overberg Schools Bredasdorp Zone Trails 2023				Tournament Overberg Schools Bredasdorp Zone Trails 2023
		date 2023-03-02	rnd 4	type Rapid	result 1	date 2023-03-02	rnd 4	type Rapid	result 1
		Opponent Roeloffze, J (James)				Opponent Roeloffze, J (James)

#	Games	Start				End
1	4	Tournament Overberg Top Schools 2023				Tournament Overberg Top Schools 2023
		date 2023-08-05	rnd 2	type Standard	result 1	date 2023-08-05	rnd 5	type Standard	result 1
		Opponent Monroe, C (Chloe)				Opponent Le Roux, C (Carmen)
2	1	Tournament Overberg Schools - PS Closed 2024				Tournament Overberg Schools - PS Closed 2024
		date 2024-03-16	rnd 3	type Standard	result 1	date 2024-03-16	rnd 3	type Standard	result 1
		Opponent Coulsen, D (Danilo)				Opponent Coulsen, D (Danilo)

#	Games	Start				End
1	1	Tournament Overberg Schools Bredasdorp Zone Trails 2023				Tournament Overberg Schools Bredasdorp Zone Trails 2023
		date 2023-03-02	rnd 4	type Rapid	result 1	date 2023-03-02	rnd 4	type Rapid	result 1
		Opponent Roeloffze, J (James)				Opponent Roeloffze, J (James)
2	1	Tournament Overberg Schools Bredasdorp Zone Trails 2023				Tournament Overberg Schools Bredasdorp Zone Trails 2023
		date 2023-02-16	rnd 1	type Rapid	result 1	date 2023-02-16	rnd 1	type Rapid	result 1
		Opponent Stodart, D (Dani�l)				Opponent Stodart, D (Dani�l)

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	Stodart ,D (Dani�l)	2	1	0	1	0	-425	1	1	425	0	0	0
1	Stodart ,D (Dani�l)	2	1200	1200	1	1200	775	1	1200	1625	0	0	0
2	Van Zyl ,E (Ethan)	2	0	-425	1	0	-425	1	0	-425	0	0	0
2	Van Zyl ,E (Ethan)	2	1213.8	788.8	1	1240	788.8	1	1162	788.8	0	0	0
3	Nel ,C (Caleb)	1	1	425	1	1	425	0	0	0	0	0	0
3	Nel ,C (Caleb)	1	1116.6	1541.6	1	1160	1541.6	0	0	0	0	0	0
4	Lotz ,R (Renaldo)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Lotz ,R (Renaldo)	1	1220.2	795.2	1	1197.6	795.2	0	0	0	0	0	0
5	Badenhorst ,M (Marinus)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Badenhorst ,M (Marinus)	1	1190.4	765.4	1	1200	765.4	0	0	0	0	0	0
6	Coulsen ,D (Danilo)	1	1	425	1	1	425	0	0	0	0	0	0
6	Coulsen ,D (Danilo)	1	1187	1612	1	1200	1612	0	0	0	0	0	0
7	Coetzer ,H (Hanro)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Coetzer ,H (Hanro)	1	1255.9	830.9	1	1221.8	830.9	0	0	0	0	0	0
8	Swart ,W (Wehan)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Swart ,W (Wehan)	1	1176	751	1	1200	751	0	0	0	0	0	0
9	Grobbelaar ,M (Marlo)	1	1	425	1	1	425	0	0	0	0	0	0
9	Grobbelaar ,M (Marlo)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Zondo ,K (Khayalethu)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Zondo ,K (Khayalethu)	1	1200	775	1	1200	775	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

De Koker, A (Andreas Stephanus)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms