Chess South Africa Ratings Database

PLAYER PAGE

Personal

Koster, X (Xander)

Chess SA id

105077029

FIDE id

Date of birth

2005-03-29 (Adult)

Gender

Male

Region

Mopani (LMG)

Citizen

RSA

Titles

Chess SA registered

Last active game

2018-05-05

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	571.3	565	618.8	500
Raw rating	571.3	565	618.8	500
Weighted rating	571.3	564.3	618.8	500
Weighted performance	0	0	0	0
Floor	500	500	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	406.1	409.8	379.5	449.5
Highest rating	1200 2018-02-01	1200 2024-02-01	1286.8 2018-05-01	1200 2024-02-01
Highest raw rating	571.3 2024-02-01	565 2024-02-01	618.8 2024-02-01	500 2024-02-01
Highest weighted rating	571.3 2024-11-01	565 2024-11-01	618.8 2024-11-01	500 2024-11-01
Highest weighted performance	1200 2018-02-01	1200 2024-02-01	1286.8 2018-05-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	571.3	565	618.8	500
Analysis
Rating	571.3	565	618.8	500
Raw rating	571.3	565	618.8	500
Weighted rating	571.3	564.3	618.8
Weighted performance	0	0	0
K-factor	40	40	40	40
Floor	500	500	500	500
Max/Min rating change allowed	406.1	409.8	379.5	449.5
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	571.3	565	618.8	500
New weighted rating	571.3	564.8	618.8	500
New weighted performance	0	0	0	0
Temp new rating	571.3	565	618.8	500
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	571.3	565	618.8	500
New K-factor	40	40	40	40
New floor	500	500	500	500

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	20	10	10

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Mopani (LMG)
Province	Limpopo (LP)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult 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	5	3	60	85	1166.8	1251.8
Standard	0	0	0	0	0	0
Rapid	5	3	60	85	1166.8	1251.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	571.3	565	618.8	500
2025-09-01	571.3	565	618.8	500
2025-08-01	571.3	565	618.8	500
2025-07-01	571.3	565	618.8	500
2025-06-01	571.3	565	618.8	500
2025-05-01	571.3	565	618.8	500
2025-04-01	571.3	565	618.8	500
2025-03-01	571.3	565	618.8	500
2025-02-01	571.3	565	618.8	500
2025-01-01	571.3	565	618.8	500
2024-12-01	571.3	565	618.8	500
2024-11-01	571.3	565	618.8	500
2024-10-01	571.3	565	618.8	500
2024-09-01	571.3	565	618.8	500
2024-08-01	571.3	565	618.8	500
2024-07-01	571.3	565	618.8	500
2024-06-01	571.3	565	618.8	500
2024-08-01	571.3	565	618.8	500
2024-04-01	571.3	565	618.8	500
2024-03-01	571.3	565	618.8	500
2024-02-01	571.3	565	618.8	500
2024-01-01	571.3	565	618.8	500
2023-12-01	571.3	500	618.8	500
2023-11-01	571.3	500	618.8	500

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	2018 Super 12 (Senior)	2018-05-05	2018-05-05	Rapid	Tshwane (GTP)	5	5	3	Yes	Analysis

#	Games	Start				End
1	2	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 3	type Rapid	result 1	date 2018-05-05	rnd 4	type Rapid	result 1
		Opponent Boonzaaier, H (Henk)				Opponent Smith, A (Avon)
2	1	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 1	type Rapid	result 1	date 2018-05-05	rnd 1	type Rapid	result 1
		Opponent Nwadi, FK (Franklin)				Opponent Nwadi, FK (Franklin)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 3	type Rapid	result 1	date 2018-05-05	rnd 4	type Rapid	result 1
		Opponent Boonzaaier, H (Henk)				Opponent Smith, A (Avon)
2	1	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 1	type Rapid	result 1	date 2018-05-05	rnd 1	type Rapid	result 1
		Opponent Nwadi, FK (Franklin)				Opponent Nwadi, FK (Franklin)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 3	type Rapid	result 1	date 2018-05-05	rnd 4	type Rapid	result 1
		Opponent Boonzaaier, H (Henk)				Opponent Smith, A (Avon)
2	1	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 1	type Rapid	result 1	date 2018-05-05	rnd 1	type Rapid	result 1
		Opponent Nwadi, FK (Franklin)				Opponent Nwadi, FK (Franklin)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 3	type Rapid	result 1	date 2018-05-05	rnd 4	type Rapid	result 1
		Opponent Boonzaaier, H (Henk)				Opponent Smith, A (Avon)
2	1	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 1	type Rapid	result 1	date 2018-05-05	rnd 1	type Rapid	result 1
		Opponent Nwadi, FK (Franklin)				Opponent Nwadi, FK (Franklin)

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	Scheepers ,J (Jonathan)	1	0	-425	0	0	0	1	0	-425	0	0	0
1	Scheepers ,J (Jonathan)	1	1200	775	0	0	0	1	1200	775	0	0	0
2	Boonzaaier ,H (Henk)	1	1	425	0	0	0	1	1	425	0	0	0
2	Boonzaaier ,H (Henk)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
3	Stevens ,W (Werner)	1	0	-425	0	0	0	1	0	-425	0	0	0
3	Stevens ,W (Werner)	1	1200	775	0	0	0	1	1200	775	0	0	0
4	Nwadi ,FK (Franklin Kosisochukwu)	1	1	425	0	0	0	1	1	425	0	0	0
4	Nwadi ,FK (Franklin Kosisochukwu)	1	1034.2	1459.2	0	0	0	1	1200	1459.2	0	0	0
5	Smith ,A (Avon)	1	1	425	0	0	0	1	1	425	0	0	0
5	Smith ,A (Avon)	1	1200	1625	0	0	0	1	1200	1625	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Koster, X (Xander)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms