Chess South Africa Ratings Database

PLAYER PAGE

Personal

Koopman, L (Leo-Arlin)

Chess SA id

1150153170

FIDE id

Date of birth

2015-07-06 (U12)

Gender

Male

Region

West Coast (WCU)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-05-05

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1211.1	1188.8	1252.9	1200
Raw rating	1210.8	1188.8	1252.9	1200
Weighted rating	1211.1	1187.3	1251.4	1200
Weighted performance	0	0	0	0
Floor	727.2	700	752.9	700
K-factor	36	36	36	36
Min/Max rating change allowed	163.3	168.5	153.8	165.8
Highest rating	1227.2 2024-04-01	1200 2018-10-01	1292.7 2024-02-01	1200 2018-10-01
Highest raw rating	1227.2 2024-04-01	1200 2024-03-01	1252.9 2024-04-01	1200 2024-03-01
Highest weighted rating	1210.3 2025-08-01	1200 2018-10-01	1247.9 2025-08-01	1200 2018-10-01
Highest weighted performance	1217.4 2024-02-01	1200 2024-03-01	1292.7 2024-02-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0.1	0	0	0
New rating	1211.2	1188.8	1252.9	1200
Analysis
Rating	1211.1	1188.8	1252.9	1200
Raw rating	1210.8	1188.8	1252.9	1200
Weighted rating	1211.1	1187.3	1251.4
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	727.2	700	752.9	700
Max/Min rating change allowed	163.3	168.5	153.8	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	1210.8	1188.8	1252.9	1200
New weighted rating	1211.2	1187.3	1252.1	1200
New weighted performance	0	0	0	0
Temp new rating	1211.2	1188.8	1252.9	1200
Temp new rating +/-	0.1	0	0	0
Final new rating +/-	0.1	0	0	0
New rating	1211.2	1188.8	1252.9	1200
New K-factor	36	36	36	36
New floor	727.2	700	752.9	700

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

Games since
	Main 16	Standard 6		Rapid 10		Blitz 0
Gender	Male
Age group	U12
Region	West Coast (WCU)
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	11	52.38	20.2	1212.2	1232.5
Standard	6	2	33.33	-141.7	1290.2	1148.5
Rapid	15	9	60	85	1181	1266
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1210.8	1188.8	1252.9	1200
2025-09-30	1210.8	1188.8	1252.9	1200
2025-09-01	1210.8	1188.8	1252.9	1200
2025-08-01	1210.8	1188.8	1252.9	1200
2025-07-01	1210.8	1188.8	1252.9	1200
2025-06-01	1210.8	1188.8	1252.9	1200
2025-05-01	1210.8	1188.8	1252.9	1200
2025-04-01	1210.8	1188.8	1252.9	1200
2025-03-01	1210.8	1188.8	1252.9	1200
2025-02-01	1210.8	1188.5	1252.9	1200
2025-01-01	1210.8	1180.9	1252.9	1200
2024-12-01	1210.8	1180.9	1252.9	1200
2024-11-01	1210.8	1180.9	1252.9	1200
2024-10-01	1210.8	1180.9	1252.9	1200
2024-09-01	1210.8	1180.9	1252.9	1200
2024-08-01	1210.8	1180.9	1252.9	1200
2024-07-01	1210.8	1180.9	1252.9	1200
2024-09-01	1210.8	1180.9	1252.9	1200
2024-05-01	1227.2	1200	1252.9	1200
2024-04-01	1227.2	1200	1252.9	1200
2024-03-01	1221.6	1200	1243.2	1200
2024-02-01	1187	1200	1184	1200
2024-01-01	1187	1200	1184	1200
2023-12-01	1187	1200	1184	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	Western Cape PS Individuals Championship 2024 (U9 Boys)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	2	Yes	Analysis
2	West Coast Schools Chess Prestige Championships 2024 (U9 Boys)	2024-03-09	2024-03-09	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
3	Bo-Weskus Skole Prestige 2024 (O9 Seuns)	2024-02-10	2024-02-10	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
4	Bo-Weskus Skole Prestige 2023 (O9 Seuns)	2023-03-04	2023-03-04	Rapid	West Coast (WCU)	5	5	2	Yes	Analysis

#	Games	Start				End
1	3	Tournament Bo-Weskus Skole Prestige 2024				Tournament Bo-Weskus Skole Prestige 2024
		date 2024-02-10	rnd 3	type Rapid	result 1	date 2024-02-10	rnd 5	type Rapid	result 1
		Opponent Esterhuyse, N (Nicol)				Opponent Sacco, A (Aldrin)
2	3	Tournament Bo-Weskus Skole Prestige 2023				Tournament Bo-Weskus Skole Prestige 2024
		date 2023-03-04	rnd 4	type Rapid	result 0.5	date 2024-02-10	rnd 1	type Rapid	result 1
		Opponent Milford, M (Mihasquo)				Opponent Mouton, L (Luhaygo)
3	2	Tournament West Coast Schools Chess Prestige Championships 2024				Tournament West Coast Schools Chess Prestige Championships 2024
		date 2024-03-09	rnd 2	type Rapid	result 1	date 2024-03-09	rnd 3	type Rapid	result 1
		Opponent Oberholzer, J (Justin)				Opponent Esterhuyse, N (Nicol)

#	Games	Start				End
1	1	Tournament Western Cape PS Individuals Championship 2024				Tournament Western Cape PS Individuals Championship 2024
		date 2024-05-05	rnd 6	type Standard	result 1	date 2024-05-05	rnd 6	type Standard	result 1
		Opponent Marner, L (Loannes)				Opponent Marner, L (Loannes)
2	1	Tournament Western Cape PS Individuals Championship 2024				Tournament Western Cape PS Individuals Championship 2024
		date 2024-05-04	rnd 4	type Standard	result 1	date 2024-05-04	rnd 4	type Standard	result 1
		Opponent Van Eeden, C (Christiaan)				Opponent Van Eeden, C (Christiaan)

#	Games	Start				End
1	3	Tournament Bo-Weskus Skole Prestige 2024				Tournament Bo-Weskus Skole Prestige 2024
		date 2024-02-10	rnd 3	type Rapid	result 1	date 2024-02-10	rnd 5	type Rapid	result 1
		Opponent Esterhuyse, N (Nicol)				Opponent Sacco, A (Aldrin)
2	3	Tournament Bo-Weskus Skole Prestige 2023				Tournament Bo-Weskus Skole Prestige 2024
		date 2023-03-04	rnd 4	type Rapid	result 0.5	date 2024-02-10	rnd 1	type Rapid	result 1
		Opponent Milford, M (Mihasquo)				Opponent Mouton, L (Luhaygo)
3	2	Tournament West Coast Schools Chess Prestige Championships 2024				Tournament West Coast Schools Chess Prestige Championships 2024
		date 2024-03-09	rnd 2	type Rapid	result 1	date 2024-03-09	rnd 3	type Rapid	result 1
		Opponent Oberholzer, J (Justin)				Opponent Esterhuyse, N (Nicol)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Bo-Weskus Skole Prestige 2024				Tournament Bo-Weskus Skole Prestige 2024
		date 2024-02-10	rnd 3	type Rapid	result 1	date 2024-02-10	rnd 5	type Rapid	result 1
		Opponent Esterhuyse, N (Nicol)				Opponent Sacco, A (Aldrin)
2	2	Tournament West Coast Schools Chess Prestige Championships 2024				Tournament West Coast Schools Chess Prestige Championships 2024
		date 2024-03-09	rnd 2	type Rapid	result 1	date 2024-03-09	rnd 3	type Rapid	result 1
		Opponent Oberholzer, J (Justin)				Opponent Esterhuyse, N (Nicol)
3	1	Tournament Western Cape PS Individuals Championship 2024				Tournament Western Cape PS Individuals Championship 2024
		date 2024-05-05	rnd 6	type Standard	result 1	date 2024-05-05	rnd 6	type Standard	result 1
		Opponent Marner, L (Loannes)				Opponent Marner, L (Loannes)

#	Games	Start				End
1	1	Tournament Western Cape PS Individuals Championship 2024				Tournament Western Cape PS Individuals Championship 2024
		date 2024-05-05	rnd 6	type Standard	result 1	date 2024-05-05	rnd 6	type Standard	result 1
		Opponent Marner, L (Loannes)				Opponent Marner, L (Loannes)
2	1	Tournament Western Cape PS Individuals Championship 2024				Tournament Western Cape PS Individuals Championship 2024
		date 2024-05-04	rnd 4	type Standard	result 1	date 2024-05-04	rnd 4	type Standard	result 1
		Opponent Van Eeden, C (Christiaan)				Opponent Van Eeden, C (Christiaan)

#	Games	Start				End
1	3	Tournament Bo-Weskus Skole Prestige 2024				Tournament Bo-Weskus Skole Prestige 2024
		date 2024-02-10	rnd 3	type Rapid	result 1	date 2024-02-10	rnd 5	type Rapid	result 1
		Opponent Esterhuyse, N (Nicol)				Opponent Sacco, A (Aldrin)
2	2	Tournament West Coast Schools Chess Prestige Championships 2024				Tournament West Coast Schools Chess Prestige Championships 2024
		date 2024-03-09	rnd 2	type Rapid	result 1	date 2024-03-09	rnd 3	type Rapid	result 1
		Opponent Oberholzer, J (Justin)				Opponent Esterhuyse, N (Nicol)
3	1	Tournament West Coast Schools Chess Prestige Championships 2024				Tournament West Coast Schools Chess Prestige Championships 2024
		date 2024-03-09	rnd 5	type Rapid	result 1	date 2024-03-09	rnd 5	type Rapid	result 1
		Opponent Chetty, D (Duke)				Opponent Chetty, D (Duke)

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	Steenkamp ,W (Willem)	3	0	-425	1	0	-425	2	0	-425	0	0	0
1	Steenkamp ,W (Willem)	3	1239.9	814.9	1	1122.8	814.9	2	1325.7	814.9	0	0	0
2	Esterhuyse ,N (Nicol)	2	2	425	0	0	0	2	2	425	0	0	0
2	Esterhuyse ,N (Nicol)	2	1192.6	1617.6	0	0	0	2	1187.8	1617.6	0	0	0
3	Marner ,L (Loannes)	1	1	425	1	1	425	0	0	0	0	0	0
3	Marner ,L (Loannes)	1	1339.2	1764.2	1	1401.1	1764.2	0	0	0	0	0	0
4	Musakwa ,C (Cole)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Musakwa ,C (Cole)	1	1353.9	928.9	1	1338.1	928.9	0	0	0	0	0	0
5	Prins ,K (Kai)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Prins ,K (Kai)	1	1338.2	913.2	1	1364.4	913.2	0	0	0	0	0	0
6	Burnett ,T (Tomas)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Burnett ,T (Tomas)	1	1294.2	869.2	1	1270.6	869.2	0	0	0	0	0	0
7	Van Eeden ,C (Christiaan)	1	1	425	1	1	425	0	0	0	0	0	0
7	Van Eeden ,C (Christiaan)	1	1144.7	1569.7	1	1116.1	1569.7	0	0	0	0	0	0
8	Milford ,M (Mihasquo)	1	0.5	0	0	0	0	1	0.5	0	0	0	0
8	Milford ,M (Mihasquo)	1	1143.6	1143.6	0	0	0	1	1107.2	1143.6	0	0	0
9	Bester ,N (Neyma)	1	0	-425	0	0	0	1	0	-425	0	0	0
9	Bester ,N (Neyma)	1	1183.2	758.2	0	0	0	1	1177.8	758.2	0	0	0
10	Oberholzer ,J (Justin)	1	1	425	0	0	0	1	1	425	0	0	0
10	Oberholzer ,J (Justin)	1	1098.2	1523.2	0	0	0	1	1149.9	1523.2	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Koopman, L (Leo-Arlin)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms