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

2025-11-29

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1112.5	1095.2	1176.4	1200
Raw rating	1070.7	1049.2	1135.7	1200
Weighted rating	1112.5	1095.2	1176.4	1200
Weighted performance	997.5	886.1	1076.9	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	199.4	205.6	181.7	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	-4.5	-5	-4	0
New rating	1107.9	1090.2	1172.5	1200
Analysis
Rating	1112.5	1095.2	1176.4	1200
Raw rating	1070.7	1049.2	1135.7	1200
Weighted rating	1112.5	1095.2	1176.4
Weighted performance	997.5	886.1	1076.9
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	199.4	205.6	181.7	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	1070.7	1049.2	1135.7	1200
New weighted rating	1107.9	1090.2	1172.5	1200
New weighted performance	990.9	879.8	1069.6	0
Temp new rating	1107.9	1090.2	1172.5	1200
Temp new rating +/-	-4.5	-5	-4	0
Final new rating +/-	-4.5	-5	-4	0
New rating	1107.9	1090.2	1172.5	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	28	13	15
	21	16	5
	0	0	0
	0	0	0
	0	0	0
History	49	29	20

Games since
	Main 49	Standard 29		Rapid 20		Blitz 0
Gender	Female
Age group	U12
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	4480		1511		217
Female	1145		462		80
U12	769		274		43
U12 Female	246		102		17
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	1788		881		131
Female	413		216		39
U12	354		193		39
U12 Female	111		63		15
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	28	7	25	-212.5	1261	1048.5
Standard	13	2	15.38	-294.2	1285.4	991.1
Rapid	15	5	33.33	-141.7	1240	1098.3
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	49	11.5	23.47	-225.5	1234	1008.5
Standard	29	4.5	15.52	-293.1	1226.5	933.4
Rapid	20	7	35	-127.5	1244.9	1117.4
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1070.7	1049.2	1135.7	1200
2025-11-30	1069.1	1049.2	1146.1	1200
2025-11-01	1069.1	1049.2	1146.1	1200
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
2024-11-01	1162.2	1155.2	1200	1200
2024-07-01	1162.2	1155.2	1200	1200
2024-06-01	1162.2	1155.2	1200	1200
2024-05-01	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

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	WCSC Brian Raubenheimer Development 2025 (U11 Girls)	2025-11-29	2025-11-29	Rapid	Cape Winelands (WCW)	5	5	2	Yes	Analysis
2	Worcester Schools Knock-Out 2025 (U11 Girls)	2025-10-18	2025-10-18	Rapid	Cape Winelands (WCW)	6	5	2	Yes	Analysis
3	Worcester Library - Holiday Oct 2025	2025-10-08	2025-10-08	Standard	Cape Winelands (WCW)	5	4	0	Yes	Analysis
4	Worcester Chess Club 2025	2025-10-07	2025-10-07	Standard	Cape Winelands (WCW)	5	4	0.5	Yes	Analysis
5	De Villiers PS 2025 (U12 Girls)	2025-08-16	2025-08-16	Rapid	Cape Winelands (WCW)	5	5	0	Yes	Analysis
6	Cape Winelands Schools Development 2025 (U11 Girls)	2025-08-02	2025-08-02	Rapid	Cape Winelands (WCW)	5	5	3	Yes	Analysis
7	Cape Winelands Schools - Trials 1 2025 (U11 Girls)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	1.5	Yes	Analysis
8	Worcester Knock-Out 2024 (U9 Girls)	2024-10-19	2024-10-19	Rapid	Cape Winelands (WCW)	6	5	2	Yes	Analysis
9	Strategema Chess October 2024 (U9)	2024-10-05	2024-10-05	Standard	Cape Winelands (WCW)	5	5	1.5	Yes	Analysis
10	Akkertjies Invitational 2024 (U11 Girls)	2024-09-14	2024-09-14	Standard	Cape Winelands (WCW)	5	4	1	Yes	Analysis
11	De Villiers PS Tournament 2024 (U10)	2024-08-17	2024-08-17	Standard	Cape Winelands (WCW)	5	5	0	Yes	Analysis
12	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 Worcester Schools Knock-Out 2025				Tournament Worcester Schools Knock-Out 2025
		date 2025-10-18	rnd 4	type Rapid	result 1	date 2025-10-18	rnd 5	type Rapid	result 1
		Opponent Van Loggerenberg, M (Mila)				Opponent Visser, A (Amiera)
3	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)

#	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)	5	1	-255	3	1	-141.7	2	0	-425	0	0	0
1	Baadjies ,Q (Qiana)	5	1123.9	868.9	3	1060.1	982.2	2	1224.8	698.9	0	0	0
2	Africa ,F (Faithlynn)	4	0	-425	0	0	0	4	0	-425	0	0	0
2	Africa ,F (Faithlynn)	4	1391.2	966.2	0	0	0	4	1336.3	966.2	0	0	0
3	Van Der Westhuizen ,L (Linli)	3	0	-425	3	0	-425	0	0	0	0	0	0
3	Van Der Westhuizen ,L (Linli)	3	1495.5	1070.5	3	1484.3	1070.5	0	0	0	0	0	0
4	Visser ,A (Amiera)	3	1	-141.7	1	0	-425	2	1	0	0	0	0
4	Visser ,A (Amiera)	3	1087	945.4	1	987.2	662	2	1216.7	1087	0	0	0
5	Du Toit ,S (Shanika)	3	0	-425	0	0	0	3	0	-425	0	0	0
5	Du Toit ,S (Shanika)	3	1357.2	932.2	0	0	0	3	1320.3	932.2	0	0	0
6	Sedan ,A (Abubacker)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Sedan ,A (Abubacker)	2	1209.8	784.8	2	1200	784.8	0	0	0	0	0	0
7	Prinsloo ,E (Esmari)	2	1	0	1	0	-425	1	1	425	0	0	0
7	Prinsloo ,E (Esmari)	2	1122.9	1122.9	1	1124.8	697.9	1	1200	1547.9	0	0	0
8	Fortuin ,P (Pearl)	2	0	-425	1	0	-425	1	0	-425	0	0	0
8	Fortuin ,P (Pearl)	2	1195.9	770.9	1	1200	770.9	1	1200	770.9	0	0	0
9	Venter ,D (Danelize)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Venter ,D (Danelize)	1	1089.2	664.2	1	1129.4	664.2	0	0	0	0	0	0
10	Davel ,M (Marny)	1	1	425	1	1	425	0	0	0	0	0	0
10	Davel ,M (Marny)	1	1200	1625	1	1200	1625	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Booysen, I (Ilya)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms