Chess South Africa Ratings Database

PLAYER PAGE

Personal

Koopman, P (Percian)

Chess SA id

2150143112

FIDE id

Date of birth

2015-03-10 (U12)

Gender

Female

Region

West Coast (WCU)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-07

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1129.2

Item	Main	Standard	Rapid	Blitz
Rating	1225.5	1200.9	1261.1	1200
Raw rating	1194.6	1185.4	1257.2	1200
Weighted rating	1225.5	1200.9	1261.1	1200
Weighted performance	1044.7	1058.7	1079.4	0
Floor	754.7	719.2	782.5	700
K-factor	36	36	36	36
Min/Max rating change allowed	167.1	169.3	152.8	165.8
Highest rating	1346.5 2022-06-01	1219.2 2024-12-01	1417.3 2022-06-01	1200 2018-10-01
Highest raw rating	1254.7 2024-12-01	1219.2 2024-12-01	1282.5 2024-09-01	1200 2024-02-01
Highest weighted rating	1225.5 2025-09-30	1219.2 2018-10-01	1282.5 2025-07-01	1200 2018-10-01
Highest weighted performance	1346.5 2022-06-01	1200 2019-12-01	1417.3 2022-06-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-1.7	-0.3	0.4	0
New rating	1223.8	1200.5	1261.5	1200
Analysis
Rating	1225.5	1200.9	1261.1	1200
Raw rating	1194.6	1185.4	1257.2	1200
Weighted rating	1225.5	1200.9	1261.1
Weighted performance	1044.7	1058.7	1079.4
K-factor	36	36	36	36
Floor	754.7	719.2	782.5	700
Max/Min rating change allowed	167.1	169.3	152.8	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	1194.6	1185.4	1257.2	1200
New weighted rating	1223.8	1200.5	1261.5	1200
New weighted performance	1044.3	1058.3	1079	0
Temp new rating	1223.8	1200.5	1261.5	1200
Temp new rating +/-	-1.7	-0.3	0.4	0
Final new rating +/-	-1.7	-0.3	0.4	0
New rating	1223.8	1200.5	1261.5	1200
New K-factor	36	36	36	36
New floor	754.7	719.2	782.5	700

Item	Main	Standard	Rapid
	0	0	0
	16	6	10
	38	16	22
	29	4	25
	9	0	9
	0	0	0
History	92	26	66

Games since
	Main 54	Standard 22		Rapid 32		Blitz 0
Gender	Female
Age group	U12
Region	West Coast (WCU)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	3836		1270		141
Female	901		369		46
U12	631		225		28
U12 Female	198		81		12
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	1258		637		155
Female	232		135		41
U12	234		134		35
U12 Female	66		41		16
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-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	16	4	25	-212.5	1293.4	1080.9
Standard	6	1	16.67	-283.3	1356.2	1072.9
Rapid	10	3	30	-170	1255.8	1085.8
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	92	44	47.83	-18.5	1223.4	1204.9
Standard	26	10	38.46	-98.1	1276	1177.9
Rapid	66	34	51.52	12.9	1202.6	1215.5
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1194.6	1185.4	1257.2	1200
2025-09-01	1225.1	1219.2	1257.2	1200
2025-08-01	1225.1	1219.2	1257.2	1200
2025-07-01	1240.3	1219.2	1259.3	1200
2025-06-01	1240.3	1219.2	1259.3	1200
2025-05-01	1240.3	1219.2	1259.3	1200
2025-04-01	1240.3	1219.2	1259.3	1200
2025-03-01	1240.3	1219.2	1259.3	1200
2025-02-01	1254.7	1219.2	1282.5	1200
2025-01-01	1254.7	1219.2	1282.5	1200
2024-12-01	1254.7	1219.2	1282.5	1200
2024-11-01	1193.4	1136.4	1282.5	1200
2024-10-01	1193.4	1136.4	1282.5	1200
2024-09-01	1239.1	1194.4	1282.5	1200
2024-08-01	1208	1194.4	1234.6	1200
2024-07-01	1215.3	1194.4	1248.6	1200
2024-06-01	1215.3	1194.4	1248.6	1200
2024-08-01	1203.6	1159.2	1248.6	1200
2024-04-01	1203.6	1159.2	1248.6	1200
2024-03-01	1195	1159.2	1240.3	1200
2024-02-01	1172.1	1159.2	1207.5	1200
2024-01-01	1172.1	1159.2	1207.5	1200
2023-12-01	1172.1	1159.2	1207.5	1200
2023-11-01	1172.1	1159.2	1207.5	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Western Cape Schools - Top Schools 2025 (U11 Girls)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	6	1	Yes	Analysis
2	Upper West Coast Top Schools 2025 (U11)	2025-06-14	2025-06-14	Rapid	West Coast (WCU)	5	5	1	Yes	Analysis
3	Upper West Coast Presrige 2025 (U11Girls)	2025-02-22	2025-02-22	Rapid	West Coast (WCU)	5	5	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Western Cape Schools - Top Schools 2025 (U11 Girls)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	6	1	Yes	Analysis
2	Upper West Coast Top Schools 2025 (U11)	2025-06-14	2025-06-14	Rapid	West Coast (WCU)	5	5	1	Yes	Analysis
3	Upper West Coast Presrige 2025 (U11Girls)	2025-02-22	2025-02-22	Rapid	West Coast (WCU)	5	5	2	Yes	Analysis
4	PR Booyse Standard Tournament 024 (Development)	2024-11-02	2024-11-02	Standard	West Coast (WCU)	5	5	4	Yes	Analysis
5	Western Cape Top Schools Championship 2024 (U9 Girls)	2024-08-30	2024-09-01	Standard	Eden (WEG)	6	5	1	Yes	Analysis
6	Pedro Booyse Top Schools Championships 2024 (U7+U9)	2024-07-20	2024-07-20	Rapid	West Coast (WCU)	7	7	5	Yes	Analysis
7	Pedro Booyse Annual Rapid 2024 (Development)	2024-07-06	2024-07-06	Rapid	West Coast (WCU)	5	5	2.5	Yes	Analysis
8	Western Cape PS Individuals Championship 2024 (U9 Girls)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
9	West Coast Schools Chess Prestige Championships 2024 (U9 Girls)	2024-03-09	2024-03-09	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
10	Bo-Weskus Skole Prestige 2024 (O9 Dogters)	2024-02-10	2024-02-10	Rapid	West Coast (WCU)	5	5	3.5	Yes	Analysis
11	Western Cape Top Schools 2023 (U9 Girls)	2023-09-02	2023-09-03	Standard	Cape Winelands (WCW)	5	4	1	Yes	Analysis
12	West Coast Open 2023 (Development A)	2023-05-20	2023-06-03	Rapid	West Coast (WCU)	5	5	2	Yes	Analysis
13	Upper West Coast Top Schools Championship 2023 (U7-U11)	2023-06-10	2023-06-10	Rapid	West Coast (WCU)	5	4	2	Yes	Analysis
14	West Coast Schools Development Championships 2023 (U7 Open+U9 Girls)	2023-04-22	2023-04-22	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
15	PRBCC Closed 2023 (C)	2023-04-15	2023-04-15	Rapid	West Coast (WCU)	6	6	3	Yes	Analysis
16	Bo-Weskus Skole Prestige 2023 (O9 Dogters)	2023-03-04	2023-03-04	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
17	West Coast Schools Chess Grand Challenge 2022 (PS Development)	2022-10-29	2022-10-29	Rapid	West Coast (WCU)	5	5	1	Yes	Analysis
18	Bo-Weskus Top Skole 2022 (O7)	2022-06-11	2022-06-11	Rapid	West Coast (WCU)	6	4	3	Yes	Analysis

#	Games	Start				End
1	6	Tournament PR Booyse Standard Tournament 024				Tournament Upper West Coast Presrige 2025
		date 2024-11-02	rnd 2	type Standard	result 1	date 2025-02-22	rnd 2	type Rapid	result 1
		Opponent Julie, L (Leo)				Opponent Skippers, J (Jamie-Lee)
2	4	Tournament Pedro Booyse Annual Rapid 2024				Tournament Pedro Booyse Top Schools Championships 2024
		date 2024-07-06	rnd 5	type Rapid	result 1	date 2024-07-20	rnd 3	type Rapid	result 1
		Opponent Skippers, J (Jamie-Lee)				Opponent Filander, B (Brooklyn)
3	4	Tournament Bo-Weskus Top Skole 2022				Tournament Bo-Weskus Top Skole 2022
		date 2022-06-11	rnd 1	type Rapid	result 0.5	date 2022-06-11	rnd 6	type Rapid	result 1
		Opponent Hough, C (Cj)				Opponent Karstens, C (Caitline)

#	Games	Start				End
1	4	Tournament PR Booyse Standard Tournament 024				Tournament PR Booyse Standard Tournament 024
		date 2024-11-02	rnd 2	type Standard	result 1	date 2024-11-02	rnd 5	type Standard	result 1
		Opponent Julie, L (Leo)				Opponent Swarts, C (Ciano)
2	2	Tournament Western Cape PS Individuals Championship 2024				Tournament Western Cape PS Individuals Championship 2024
		date 2024-05-05	rnd 5	type Standard	result 1	date 2024-05-05	rnd 6	type Standard	result 1
		Opponent Julies, J (Jazne)				Opponent Flores, Z (Zhoe)
3	1	Tournament Western Cape Schools - Top Schools 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-09-06	rnd 2	type Standard	result 1	date 2025-09-06	rnd 2	type Standard	result 1
		Opponent Nel, E (Emma)				Opponent Nel, E (Emma)

#	Games	Start				End
1	4	Tournament Pedro Booyse Top Schools Championships 2024				Tournament Upper West Coast Presrige 2025
		date 2024-07-20	rnd 6	type Rapid	result 1	date 2025-02-22	rnd 2	type Rapid	result 1
		Opponent Afrika, N (Nazley)				Opponent Skippers, J (Jamie-Lee)
2	4	Tournament Pedro Booyse Annual Rapid 2024				Tournament Pedro Booyse Top Schools Championships 2024
		date 2024-07-06	rnd 5	type Rapid	result 1	date 2024-07-20	rnd 3	type Rapid	result 1
		Opponent Skippers, J (Jamie-Lee)				Opponent Filander, B (Brooklyn)
3	4	Tournament Upper West Coast Top Schools Championship 2023				Tournament Bo-Weskus Skole Prestige 2024
		date 2023-06-10	rnd 5	type Rapid	result 1	date 2024-02-10	rnd 3	type Rapid	result 0.5
		Opponent Klaase, N (Nizeche)				Opponent Kotze, M (Mirah)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament PR Booyse Standard Tournament 024				Tournament Upper West Coast Presrige 2025
		date 2024-11-02	rnd 2	type Standard	result 1	date 2025-02-22	rnd 2	type Rapid	result 1
		Opponent Julie, L (Leo)				Opponent Skippers, J (Jamie-Lee)
2	4	Tournament Pedro Booyse Annual Rapid 2024				Tournament Pedro Booyse Top Schools Championships 2024
		date 2024-07-06	rnd 5	type Rapid	result 1	date 2024-07-20	rnd 3	type Rapid	result 1
		Opponent Skippers, J (Jamie-Lee)				Opponent Filander, B (Brooklyn)
3	3	Tournament Western Cape PS Individuals Championship 2024				Tournament Pedro Booyse Annual Rapid 2024
		date 2024-05-05	rnd 5	type Standard	result 1	date 2024-07-06	rnd 1	type Rapid	result 1
		Opponent Julies, J (Jazne)				Opponent Fortuin, M (Mia)

#	Games	Start				End
1	4	Tournament PR Booyse Standard Tournament 024				Tournament PR Booyse Standard Tournament 024
		date 2024-11-02	rnd 2	type Standard	result 1	date 2024-11-02	rnd 5	type Standard	result 1
		Opponent Julie, L (Leo)				Opponent Swarts, C (Ciano)
2	2	Tournament Western Cape PS Individuals Championship 2024				Tournament Western Cape PS Individuals Championship 2024
		date 2024-05-05	rnd 5	type Standard	result 1	date 2024-05-05	rnd 6	type Standard	result 1
		Opponent Julies, J (Jazne)				Opponent Flores, Z (Zhoe)
3	1	Tournament Western Cape Schools - Top Schools 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-09-06	rnd 2	type Standard	result 1	date 2025-09-06	rnd 2	type Standard	result 1
		Opponent Nel, E (Emma)				Opponent Nel, E (Emma)

#	Games	Start				End
1	4	Tournament Pedro Booyse Top Schools Championships 2024				Tournament Upper West Coast Presrige 2025
		date 2024-07-20	rnd 6	type Rapid	result 1	date 2025-02-22	rnd 2	type Rapid	result 1
		Opponent Afrika, N (Nazley)				Opponent Skippers, J (Jamie-Lee)
2	4	Tournament Pedro Booyse Annual Rapid 2024				Tournament Pedro Booyse Top Schools Championships 2024
		date 2024-07-06	rnd 5	type Rapid	result 1	date 2024-07-20	rnd 3	type Rapid	result 1
		Opponent Skippers, J (Jamie-Lee)				Opponent Filander, B (Brooklyn)
3	3	Tournament Upper West Coast Top Schools Championship 2023				Tournament Bo-Weskus Skole Prestige 2024
		date 2023-06-10	rnd 5	type Rapid	result 1	date 2024-02-10	rnd 2	type Rapid	result 1
		Opponent Klaase, N (Nizeche)				Opponent Arinze, K (Karmelithe)

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	Tieties ,N (Nicola)	6	1	-283.3	3	1	-141.7	3	0	-425	0	0	0
1	Tieties ,N (Nicola)	6	1323.2	1039.9	3	1211.5	1181.5	3	1383.8	898.2	0	0	0
2	Van Wyk ,F (Faith)	3	0	-425	1	0	-425	2	0	-425	0	0	0
2	Van Wyk ,F (Faith)	3	1458.5	1033.5	1	1458.3	1033.5	2	1517.8	1033.5	0	0	0
3	Julies ,J (Jazne)	3	2.5	283.3	1	1	425	2	1.5	212.5	0	0	0
3	Julies ,J (Jazne)	3	1166.3	1449.6	1	1233.6	1591.3	2	1152.6	1378.8	0	0	0
4	Arinze ,K (Karmelithe)	3	2	141.7	0	0	0	3	2	141.7	0	0	0
4	Arinze ,K (Karmelithe)	3	1236.6	1378.2	0	0	0	3	1263.3	1378.2	0	0	0
5	Adonis ,G (Gia)	3	3	425	0	0	0	3	3	425	0	0	0
5	Adonis ,G (Gia)	3	1084	1509	0	0	0	3	1078.5	1509	0	0	0
6	Fortuin ,M (Mia)	3	3	425	0	0	0	3	3	425	0	0	0
6	Fortuin ,M (Mia)	3	1083.9	1508.9	0	0	0	3	1067.6	1508.9	0	0	0
7	Coleman ,G (Gabriella)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	Coleman ,G (Gabriella)	2	1349.8	924.8	2	1356	924.8	0	0	0	0	0	0
8	Tieties ,L (Lilanie)	2	0	-425	0	0	0	2	0	-425	0	0	0
8	Tieties ,L (Lilanie)	2	1295.8	870.8	0	0	0	2	1349.3	870.8	0	0	0
9	Hough ,C (Cj)	2	1	0	0	0	0	2	1	0	0	0	0
9	Hough ,C (Cj)	2	1200	1200	0	0	0	2	1200	1200	0	0	0
10	Skippers ,J (Jamie-Lee)	2	2	425	0	0	0	2	2	425	0	0	0
10	Skippers ,J (Jamie-Lee)	2	1171.6	1596.6	0	0	0	2	1164.7	1596.6	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Koopman, P (Percian)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms