Chess South Africa Ratings Database

PLAYER PAGE

Personal

Booysen, I (Ilya)

Chess SA id

2150303249

FIDE id

Date of birth

2015-09-19 (U12)

Gender

Female

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-16

Personal details last changed

1900-01-01

Junior GPX Games

17.8

Junior GPX Points

1010.8

Item	Main	Standard	Rapid	Blitz
Rating	1128.9	1123.3	1187.9	1200
Raw rating	1120.7	1123.3	1146.9	1200
Weighted rating	1128.9	1113.2	1187.9	1200
Weighted performance	973.7	0	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	185.6	184.9	178.9	165.8
Highest rating	1200 2024-05-01	1200 2024-05-01	1200 2024-05-01	1200 2024-05-01
Highest raw rating	1200 2024-05-01	1200 2024-05-01	1200 2024-05-01	1200 2024-05-01
Highest weighted rating	1200 2024-05-01	1200 2024-05-01	1200 2024-05-01	1200 2024-05-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2024-05-01	1200 2024-05-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-1.8	0	-3.7	0
New rating	1127.1	1123.3	1184.2	1200
Analysis
Rating	1128.9	1123.3	1187.9	1200
Raw rating	1120.7	1123.3	1146.9	1200
Weighted rating	1128.9	1113.2	1187.9
Weighted performance	973.7	0	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	185.6	184.9	178.9	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	1120.7	1123.3	1146.9	1200
New weighted rating	1127.1	1112.6	1184.2	1200
New weighted performance	973.3	0	0	0
Temp new rating	1127.1	1123.3	1184.2	1200
Temp new rating +/-	-1.8	0	-3.7	0
Final new rating +/-	-1.8	0	-3.7	0
New rating	1127.1	1123.3	1184.2	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	15	5	10
	21	16	5
	0	0	0
	0	0	0
	0	0	0
History	36	21	15

Games since
	Main 36	Standard 21		Rapid 15		Blitz 0
Gender	Female
Age group	U12
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-1		-1		-1
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	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-1		-1		-1
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	15	4.5	30	-170	1237.9	1067.9
Standard	5	1.5	30	-170	1250.1	1080.1
Rapid	10	3	30	-170	1231.8	1061.8
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	36	9	25	-212.5	1214.6	1002.1
Standard	21	4	19.05	-263.1	1195.6	932.5
Rapid	15	5	33.33	-141.7	1241.2	1099.5
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1120.7	1123.3	1146.9	1200
2025-09-01	1120.7	1123.3	1146.9	1200
2025-08-01	1139.7	1123.3	1196.2	1200
2025-07-01	1139.7	1123.3	1196.2	1200
2025-06-01	1139.7	1123.3	1196.2	1200
2025-05-01	1139.7	1123.3	1196.2	1200
2025-04-01	1139.7	1123.3	1196.2	1200
2025-03-01	1139.7	1123.3	1196.2	1200
2025-02-01	1137.2	1119.4	1195.6	1200
2025-01-01	1068.6	1025.6	1185.2	1200
2024-12-01	1068.6	1025.6	1185.2	1200
2024-11-01	1068.6	1025.6	1185.2	1200
2024-10-01	1061.6	1032.8	1200	1200
2024-09-01	1078.5	1050.4	1200	1200
2024-08-01	1162.2	1155.2	1200	1200
2024-07-01	1162.2	1155.2	1200	1200
2024-06-01	1162.2	1155.2	1200	1200
2024-08-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	1200
2023-11-01	1200	1200	1200	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	De Villiers PS 2025 (U12 Girls)	2025-08-16	2025-08-16	Rapid	Cape Winelands (WCW)	5	5	0	Yes	Analysis
2	Cape Winelands Schools Development 2025 (U11 Girls)	2025-08-02	2025-08-02	Rapid	Cape Winelands (WCW)	5	5	3	Yes	Analysis
3	Cape Winelands Schools - Trials 1 2025 (U11 Girls)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	1.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	De Villiers PS 2025 (U12 Girls)	2025-08-16	2025-08-16	Rapid	Cape Winelands (WCW)	5	5	0	Yes	Analysis
2	Cape Winelands Schools Development 2025 (U11 Girls)	2025-08-02	2025-08-02	Rapid	Cape Winelands (WCW)	5	5	3	Yes	Analysis
3	Cape Winelands Schools - Trials 1 2025 (U11 Girls)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	1.5	Yes	Analysis
4	Worcester Knock-Out 2024 (U9 Girls)	2024-10-19	2024-10-19	Rapid	Cape Winelands (WCW)	6	5	2	Yes	Analysis
5	Strategema Chess October 2024 (U9)	2024-10-05	2024-10-05	Standard	Cape Winelands (WCW)	5	5	1.5	Yes	Analysis
6	Akkertjies Invitational 2024 (U11 Girls)	2024-09-14	2024-09-14	Standard	Cape Winelands (WCW)	5	4	1	Yes	Analysis
7	De Villiers PS Tournament 2024 (U10)	2024-08-17	2024-08-17	Standard	Cape Winelands (WCW)	5	5	0	Yes	Analysis
8	Worcester PS League 2024 (U11)	2024-04-27	2024-04-27	Standard	Cape Winelands (WCW)	5	2	0	Yes	Analysis

#	Games	Start				End
1	3	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools Development 2025
		date 2025-02-22	rnd 5	type Standard	result 1	date 2025-08-02	rnd 2	type Rapid	result 1
		Opponent Venter, A (Andrea)				Opponent Oliphant, E (Elnique)
2	2	Tournament Strategema Chess October 2024				Tournament Strategema Chess October 2024
		date 2024-10-05	rnd 2	type Standard	result 1	date 2024-10-05	rnd 3	type Standard	result 0.5
		Opponent Davel, M (Marny)				Opponent Booysen, J (Jamal)
3	2	Tournament Akkertjies Invitational 2024				Tournament Akkertjies Invitational 2024
		date 2024-09-14	rnd 2	type Standard	result 0.5	date 2024-09-14	rnd 3	type Standard	result 0.5
		Opponent Paul, Z (Zahra)				Opponent Baadjies, Q (Qiana)

#	Games	Start				End
1	2	Tournament Strategema Chess October 2024				Tournament Strategema Chess October 2024
		date 2024-10-05	rnd 2	type Standard	result 1	date 2024-10-05	rnd 3	type Standard	result 0.5
		Opponent Davel, M (Marny)				Opponent Booysen, J (Jamal)
2	2	Tournament Akkertjies Invitational 2024				Tournament Akkertjies Invitational 2024
		date 2024-09-14	rnd 2	type Standard	result 0.5	date 2024-09-14	rnd 3	type Standard	result 0.5
		Opponent Paul, Z (Zahra)				Opponent Baadjies, Q (Qiana)
3	1	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools - Trials 1 2025
		date 2025-02-22	rnd 5	type Standard	result 1	date 2025-02-22	rnd 5	type Standard	result 1
		Opponent Venter, A (Andrea)				Opponent Venter, A (Andrea)

#	Games	Start				End
1	2	Tournament Cape Winelands Schools Development 2025				Tournament Cape Winelands Schools Development 2025
		date 2025-08-02	rnd 1	type Rapid	result 1	date 2025-08-02	rnd 2	type Rapid	result 1
		Opponent Herder, J (Jaymiree)				Opponent Oliphant, E (Elnique)
2	1	Tournament Cape Winelands Schools Development 2025				Tournament Cape Winelands Schools Development 2025
		date 2025-08-02	rnd 5	type Rapid	result 1	date 2025-08-02	rnd 5	type Rapid	result 1
		Opponent Venter, A (Andria)				Opponent Venter, A (Andria)
3	1	Tournament Worcester Knock-Out 2024				Tournament Worcester Knock-Out 2024
		date 2024-10-19	rnd 5	type Rapid	result 1	date 2024-10-19	rnd 5	type Rapid	result 1
		Opponent Prinsloo, E (Esmari)				Opponent Prinsloo, E (Esmari)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools Development 2025
		date 2025-02-22	rnd 5	type Standard	result 1	date 2025-08-02	rnd 2	type Rapid	result 1
		Opponent Venter, A (Andrea)				Opponent Oliphant, E (Elnique)
2	1	Tournament Cape Winelands Schools Development 2025				Tournament Cape Winelands Schools Development 2025
		date 2025-08-02	rnd 5	type Rapid	result 1	date 2025-08-02	rnd 5	type Rapid	result 1
		Opponent Venter, A (Andria)				Opponent Venter, A (Andria)
3	1	Tournament Worcester Knock-Out 2024				Tournament Worcester Knock-Out 2024
		date 2024-10-19	rnd 5	type Rapid	result 1	date 2024-10-19	rnd 5	type Rapid	result 1
		Opponent Prinsloo, E (Esmari)				Opponent Prinsloo, E (Esmari)

#	Games	Start				End
1	1	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools - Trials 1 2025
		date 2025-02-22	rnd 5	type Standard	result 1	date 2025-02-22	rnd 5	type Standard	result 1
		Opponent Venter, A (Andrea)				Opponent Venter, A (Andrea)
2	1	Tournament Strategema Chess October 2024				Tournament Strategema Chess October 2024
		date 2024-10-05	rnd 2	type Standard	result 1	date 2024-10-05	rnd 2	type Standard	result 1
		Opponent Davel, M (Marny)				Opponent Davel, M (Marny)

#	Games	Start				End
1	2	Tournament Cape Winelands Schools Development 2025				Tournament Cape Winelands Schools Development 2025
		date 2025-08-02	rnd 1	type Rapid	result 1	date 2025-08-02	rnd 2	type Rapid	result 1
		Opponent Herder, J (Jaymiree)				Opponent Oliphant, E (Elnique)
2	1	Tournament Cape Winelands Schools Development 2025				Tournament Cape Winelands Schools Development 2025
		date 2025-08-02	rnd 5	type Rapid	result 1	date 2025-08-02	rnd 5	type Rapid	result 1
		Opponent Venter, A (Andria)				Opponent Venter, A (Andria)
3	1	Tournament Worcester Knock-Out 2024				Tournament Worcester Knock-Out 2024
		date 2024-10-19	rnd 5	type Rapid	result 1	date 2024-10-19	rnd 5	type Rapid	result 1
		Opponent Prinsloo, E (Esmari)				Opponent Prinsloo, E (Esmari)

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	Baadjies ,Q (Qiana)	3	0.5	-283.3	2	0.5	-212.5	1	0	-425	0	0	0
1	Baadjies ,Q (Qiana)	3	1085.5	802.1	2	1036.2	873	1	1196	660.5	0	0	0
2	Africa ,F (Faithlynn)	3	0	-425	0	0	0	3	0	-425	0	0	0
2	Africa ,F (Faithlynn)	3	1374.2	949.2	0	0	0	3	1314.1	949.2	0	0	0
3	Prinsloo ,E (Esmari)	2	1	0	1	0	-425	1	1	425	0	0	0
3	Prinsloo ,E (Esmari)	2	1122.9	1122.9	1	1124.8	697.9	1	1200	1547.9	0	0	0
4	Fortuin ,P (Pearl)	2	0	-425	1	0	-425	1	0	-425	0	0	0
4	Fortuin ,P (Pearl)	2	1195.9	770.9	1	1200	770.9	1	1200	770.9	0	0	0
5	Visser ,A (Amiera)	2	0	-425	1	0	-425	1	0	-425	0	0	0
5	Visser ,A (Amiera)	2	1046.7	621.7	1	987.2	621.7	1	1182.9	621.7	0	0	0
6	Du Toit ,S (Shanika)	2	0	-425	0	0	0	2	0	-425	0	0	0
6	Du Toit ,S (Shanika)	2	1356.2	931.2	0	0	0	2	1305.2	931.2	0	0	0
7	Davel ,M (Marny)	1	1	425	1	1	425	0	0	0	0	0	0
7	Davel ,M (Marny)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Ngqwarushe ,J (Jayden)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Ngqwarushe ,J (Jayden)	1	1332.8	907.8	1	1286.4	907.8	0	0	0	0	0	0
9	Daphe ,E (Elnique)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
9	Daphe ,E (Elnique)	1	1200	1200	1	1200	1200	0	0	0	0	0	0
10	Booysen ,J (Jamal)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
10	Booysen ,J (Jamal)	1	1097.7	1097.7	1	1103.6	1097.7	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Booysen, I (Ilya)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms