Chess South Africa Ratings Database

PLAYER PAGE

Personal

Koen, I (Ian)

Chess SA id

107076733

FIDE id

Date of birth

2007-07-12 (U20)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2019-05-19

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1098.1	1089	800.7	763
Raw rating	1098.1	1089	800.7	763
Weighted rating	1098.1	1089	800.3	763
Weighted performance	195.7	193	0	0
Floor	661.5	678.2	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	191.7	194.2	292.9	309
Highest rating	1200 2018-02-01	1200 2018-02-01	1200 2024-02-01	1200 2024-02-01
Highest raw rating	1161.5 2019-05-01	1178.2 2019-05-01	800.7 2024-02-01	763 2024-02-01
Highest weighted rating	1161.5 2024-11-01	1178.2 2024-11-01	800.7 2024-11-01	763 2024-11-01
Highest weighted performance	1200 2018-02-01	1200 2018-02-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1098.1	1089	800.7	763
Analysis
Rating	1098.1	1089	800.7	763
Raw rating	1098.1	1089	800.7	763
Weighted rating	1098.1	1089	800.3
Weighted performance	195.7	193	0
K-factor	40	40	40	40
Floor	661.5	678.2	500	500
Max/Min rating change allowed	191.7	194.2	292.9	309
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	1098.1	1089	800.7	763
New weighted rating	1098.1	1089	800.6	763
New weighted performance	195.3	192.6	0	0
Temp new rating	1098.1	1089	800.7	763
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1098.1	1089	800.7	763
New K-factor	40	40	40	40
New floor	661.5	678.2	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	119	114	5

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U20
Region	Cape Town (WCT)
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	44	25	56.82	58	1081.9	1139.9
Standard	44	25	56.82	58	1081.9	1139.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1098.1	1089	800.7	763
2025-09-01	1098.1	1089	800.7	763
2025-08-01	1098.1	1089	800.7	763
2025-07-01	1098.1	1089	800.7	763
2025-06-01	1098.1	1089	800.7	763
2025-05-01	1098.1	1089	800.7	763
2025-04-01	1098.1	1089	800.7	763
2025-03-01	1098.1	1089	800.7	763
2025-02-01	1098.1	1089	800.7	763
2025-01-01	1098.1	1089	800.7	763
2024-12-01	1098.1	1089	800.7	763
2024-11-01	1098.1	1089	800.7	763
2024-10-01	1098.1	1089	800.7	763
2024-09-01	1098.1	1089	800.7	763
2024-08-01	1098.1	1089	800.7	763
2024-07-01	1098.1	1089	800.7	763
2024-06-01	1098.1	1089	800.7	763
2024-08-01	1098.1	1089	800.7	763
2024-04-01	1098.1	1089	800.7	763
2024-03-01	1098.1	1089	800.7	763
2024-02-01	1098.1	1089	800.7	763
2024-01-01	1098.1	1089	800.7	763
2023-12-01	1098.1	1089	763	763
2023-11-01	1098.1	1089	763	763

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	Western Cape Schools Individuals 2019 (U13 Boys)	2019-05-18	2019-05-19	Standard	Eden (WEG)	6	6	1	Yes	Analysis
2	Trial 2 Teddy/Toy Tournament 2019 (U12)	2019-04-06	2019-04-06	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
3	Overberg School Chess Close Champs 2019 (U13 Boys)	2019-03-08	2019-03-09	Standard	Overberg (WOS)	6	6	4	Yes	Analysis
4	Caledon Casino 2 2018 (U12)	2018-10-20	2018-10-20	Standard	Overberg (WOS)	5	5	2.5	Yes	Analysis
5	Overberg 3rd Trial 2018 (U12)	2018-05-05	2018-05-05	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
6	Overberg 2nd Trial 2018 (U12)	2018-05-05	2018-05-05	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
7	Western Cape Schools Individuals 2018 (U11 Boys)	2018-05-19	2018-05-20	Standard	Overberg (WOS)	6	6	2.5	Yes	Analysis
8	Overberg Schools Closed 2018 (U11 Boys)	2018-03-23	2018-03-23	Standard	Overberg (WOS)	6	6	4	Yes	Analysis

#	Games	Start				End
1	5	Tournament Overberg 2nd Trial 2018				Tournament Overberg 3rd Trial 2018
		date 2018-05-05	rnd 4	type Standard	result 1	date 2018-05-05	rnd 3	type Standard	result 1
		Opponent Dees, J (Jody)				Opponent Snyman, CS (Carel)
2	4	Tournament Caledon Casino 2 2018				Tournament Overberg School Chess Close Champs 2019
		date 2018-10-20	rnd 5	type Standard	result 1	date 2019-03-08	rnd 3	type Standard	result 1
		Opponent Beukes, L (Lanique)				Opponent Higham, E (Ethan)
3	4	Tournament Western Cape Schools Individuals 2018				Tournament Caledon Casino 2 2018
		date 2018-05-19	rnd 4	type Standard	result 1	date 2018-10-20	rnd 1	type Standard	result 1
		Opponent Neo, B (Bell)				Opponent Steyn, R (Rohan)

#	Games	Start				End
1	5	Tournament Overberg 2nd Trial 2018				Tournament Overberg 3rd Trial 2018
		date 2018-05-05	rnd 4	type Standard	result 1	date 2018-05-05	rnd 3	type Standard	result 1
		Opponent Dees, J (Jody)				Opponent Snyman, CS (Carel)
2	4	Tournament Caledon Casino 2 2018				Tournament Overberg School Chess Close Champs 2019
		date 2018-10-20	rnd 5	type Standard	result 1	date 2019-03-08	rnd 3	type Standard	result 1
		Opponent Beukes, L (Lanique)				Opponent Higham, E (Ethan)
3	4	Tournament Western Cape Schools Individuals 2018				Tournament Caledon Casino 2 2018
		date 2018-05-19	rnd 4	type Standard	result 1	date 2018-10-20	rnd 1	type Standard	result 1
		Opponent Neo, B (Bell)				Opponent Steyn, R (Rohan)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Overberg 2nd Trial 2018				Tournament Overberg 3rd Trial 2018
		date 2018-05-05	rnd 4	type Standard	result 1	date 2018-05-05	rnd 3	type Standard	result 1
		Opponent Dees, J (Jody)				Opponent Snyman, CS (Carel)
2	4	Tournament Caledon Casino 2 2018				Tournament Overberg School Chess Close Champs 2019
		date 2018-10-20	rnd 5	type Standard	result 1	date 2019-03-08	rnd 3	type Standard	result 1
		Opponent Beukes, L (Lanique)				Opponent Higham, E (Ethan)
3	3	Tournament Overberg Schools Closed 2018				Tournament Overberg Schools Closed 2018
		date 2018-03-23	rnd 3	type Standard	result 1	date 2018-03-23	rnd 5	type Standard	result 1
		Opponent Hofmeyr, J (Jonah)				Opponent De Wet, R (Rossouw)

#	Games	Start				End
1	5	Tournament Overberg 2nd Trial 2018				Tournament Overberg 3rd Trial 2018
		date 2018-05-05	rnd 4	type Standard	result 1	date 2018-05-05	rnd 3	type Standard	result 1
		Opponent Dees, J (Jody)				Opponent Snyman, CS (Carel)
2	4	Tournament Caledon Casino 2 2018				Tournament Overberg School Chess Close Champs 2019
		date 2018-10-20	rnd 5	type Standard	result 1	date 2019-03-08	rnd 3	type Standard	result 1
		Opponent Beukes, L (Lanique)				Opponent Higham, E (Ethan)
3	3	Tournament Overberg Schools Closed 2018				Tournament Overberg Schools Closed 2018
		date 2018-03-23	rnd 3	type Standard	result 1	date 2018-03-23	rnd 5	type Standard	result 1
		Opponent Hofmeyr, J (Jonah)				Opponent De Wet, R (Rossouw)

No games found.

#	Games	Start				End

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	De Wet ,R (Rossouw)	3	2.5	283.3	3	2.5	283.3	0	0	0	0	0	0
1	De Wet ,R (Rossouw)	3	799.1	1082.4	3	814.9	1082.4	0	0	0	0	0	0
2	Beveridge ,TG (Talitha Grace)	2	1	0	2	1	0	0	0	0	0	0	0
2	Beveridge ,TG (Talitha Grace)	2	963.4	963.4	2	950.8	963.4	0	0	0	0	0	0
3	Jonas ,SG (Sue-Win Gurshlin)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Jonas ,SG (Sue-Win Gurshlin)	2	1114.4	689.4	2	1116.8	689.4	0	0	0	0	0	0
4	Du Plessis ,Y (Yara)	2	2	425	2	2	425	0	0	0	0	0	0
4	Du Plessis ,Y (Yara)	2	1146.3	1571.3	2	1137	1571.3	0	0	0	0	0	0
5	Snyders ,M (Meya)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Snyders ,M (Meya)	2	1108	683	2	1090.8	683	0	0	0	0	0	0
6	Philander ,R (Rayden)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Philander ,R (Rayden)	1	506	81	1	506	81	0	0	0	0	0	0
7	Thompson ,D (Duwayne)	1	1	425	1	1	425	0	0	0	0	0	0
7	Thompson ,D (Duwayne)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Steyn ,R (Rohan)	1	1	425	1	1	425	0	0	0	0	0	0
8	Steyn ,R (Rohan)	1	1163.1	1588.1	1	1154.4	1588.1	0	0	0	0	0	0
9	Sikiti ,Y (Yolani)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Sikiti ,Y (Yolani)	1	1169.4	744.4	1	1151.6	744.4	0	0	0	0	0	0
10	Nel ,A (Adolf)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Nel ,A (Adolf)	1	1025	600	1	1048	600	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Koen, I (Ian)

Ratings

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Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms