Chess South Africa Ratings Database

PLAYER PAGE

Personal

Buxmann, S (Sonya)

Chess SA id

2090138472

FIDE id

Date of birth

2009-03-20 (U18)

Gender

Female

Region

Overberg (WOS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2022-09-17

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1117.7	1103.2	1155.6	1200
Raw rating	1117.7	1103.2	1155.6	1200
Weighted rating	1117.7	1103.2	1155.6	1200
Weighted performance	644.2	0	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	186.4	190.3	176.6	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2019-12-01	1200 2019-12-01	1200 2019-12-01	1200 2024-03-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2019-12-01	1200 2019-12-01	1200 2019-12-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1117.7	1103.2	1155.6	1200
Analysis
Rating	1117.7	1103.2	1155.6	1200
Raw rating	1117.7	1103.2	1155.6	1200
Weighted rating	1117.7	1103.2	1155.6
Weighted performance	644.2	0	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	186.4	190.3	176.6	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	1117.7	1103.2	1155.6	1200
New weighted rating	1117.7	1103.2	1155.6	1200
New weighted performance	643.1	0	0	0
Temp new rating	1117.7	1103.2	1155.6	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1117.7	1103.2	1155.6	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	36	20	16
	0	0	0
History	36	20	16

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Female
Age group	U18
Region	Overberg (WOS)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 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	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	36	13.5	37.5	-106.2	1211.8	1105.5
Standard	20	7	35	-127.5	1205.6	1078.1
Rapid	16	6.5	40.62	-79.7	1219.5	1139.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1117.7	1103.2	1155.6	1200
2025-09-01	1117.7	1103.2	1155.6	1200
2025-08-01	1117.7	1103.2	1155.6	1200
2025-07-01	1117.7	1103.2	1155.6	1200
2025-06-01	1117.7	1103.2	1155.6	1200
2025-05-01	1117.7	1103.2	1155.6	1200
2025-04-01	1117.7	1103.2	1155.6	1200
2025-03-01	1117.7	1103.2	1155.6	1200
2025-02-01	1117.7	1103.2	1155.6	1200
2025-01-01	1117.7	1103.2	1155.6	1200
2024-12-01	1117.7	1103.2	1155.6	1200
2024-11-01	1117.7	1103.2	1155.6	1200
2024-10-01	1117.7	1103.2	1155.6	1200
2024-09-01	1117.7	1103.2	1155.6	1200
2024-08-01	1117.7	1103.2	1155.6	1200
2024-07-01	1117.7	1103.2	1155.6	1200
2024-06-01	1117.7	1103.2	1155.6	1200
2024-08-01	1117.7	1103.2	1155.6	1200
2024-04-01	1117.7	1103.2	1155.6	1200
2024-03-01	1117.7	1103.2	1155.6	1200
2024-02-01	1117.7	1103.2	1155.6	1200
2024-01-01	1117.7	1103.2	1155.6	1200
2023-12-01	1117.7	1103.2	1155.6	1200
2023-11-01	1117.7	1103.2	1155.6	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 Top Schools 2022 (U13 Mix)	2022-09-16	2022-09-17	Standard	Overberg (WOS)	5	4	0	Yes	Analysis
2	Kleinmond Open Tournament 2022 (C)	2022-09-10	2022-09-10	Rapid	Overberg (WOS)	5	5	2.5	Yes	Analysis
3	Overberg Topskole 2022 (O13)	2022-08-20	2022-08-20	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
4	The Hermanus Open 2022 (U14)	2022-05-14	2022-05-14	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis
5	Western Cape Schools 2022 (U13 Girls)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	6	2	Yes	Analysis
6	OCF Open 2022 (U14)	2022-04-09	2022-04-09	Rapid	Overberg (WOS)	5	5	1	Yes	Analysis
7	Overberg Primary Schools Closed 2022 (U13 Girls)	2022-03-12	2022-03-12	Standard	Overberg (WOS)	5	5	2	Yes	Analysis

#	Games	Start				End
1	3	Tournament Overberg Topskole 2022				Tournament Kleinmond Open Tournament 2022
		date 2022-08-20	rnd 4	type Standard	result 1	date 2022-09-10	rnd 1	type Rapid	result 0.5
		Opponent Du Toit, V (Victor)				Opponent Hendricks, L (Lakeisha)
2	2	Tournament Kleinmond Open Tournament 2022				Tournament Kleinmond Open Tournament 2022
		date 2022-09-10	rnd 3	type Rapid	result 1	date 2022-09-10	rnd 4	type Rapid	result 1
		Opponent Drury, R (Riko)				Opponent Du Toit, M (Matthew)
3	1	Tournament Overberg Topskole 2022				Tournament Overberg Topskole 2022
		date 2022-08-20	rnd 2	type Standard	result 1	date 2022-08-20	rnd 2	type Standard	result 1
		Opponent Van Der Vyver, M (Michae)				Opponent Van Der Vyver, M (Michae)

#	Games	Start				End
1	2	Tournament Overberg Topskole 2022				Tournament Overberg Topskole 2022
		date 2022-08-20	rnd 4	type Standard	result 1	date 2022-08-20	rnd 5	type Standard	result 1
		Opponent Du Toit, V (Victor)				Opponent Benn, W (Waydin)
2	1	Tournament Overberg Topskole 2022				Tournament Overberg Topskole 2022
		date 2022-08-20	rnd 2	type Standard	result 1	date 2022-08-20	rnd 2	type Standard	result 1
		Opponent Van Der Vyver, M (Michae)				Opponent Van Der Vyver, M (Michae)
3	1	Tournament Western Cape Schools 2022				Tournament Western Cape Schools 2022
		date 2022-05-29	rnd 6	type Standard	result 1	date 2022-05-29	rnd 6	type Standard	result 1
		Opponent Williamson, S (Sarah)				Opponent Williamson, S (Sarah)

#	Games	Start				End
1	2	Tournament Kleinmond Open Tournament 2022				Tournament Kleinmond Open Tournament 2022
		date 2022-09-10	rnd 3	type Rapid	result 1	date 2022-09-10	rnd 4	type Rapid	result 1
		Opponent Drury, R (Riko)				Opponent Du Toit, M (Matthew)
2	2	Tournament The Hermanus Open 2022				Tournament Kleinmond Open Tournament 2022
		date 2022-05-14	rnd 6	type Rapid	result 1	date 2022-09-10	rnd 1	type Rapid	result 0.5
		Opponent Scheepers, T (Tiaan)				Opponent Hendricks, L (Lakeisha)
3	1	Tournament The Hermanus Open 2022				Tournament The Hermanus Open 2022
		date 2022-05-14	rnd 4	type Rapid	result 1	date 2022-05-14	rnd 4	type Rapid	result 1
		Opponent Mbuli, A (Anelisa)				Opponent Mbuli, A (Anelisa)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Kleinmond Open Tournament 2022				Tournament Kleinmond Open Tournament 2022
		date 2022-09-10	rnd 3	type Rapid	result 1	date 2022-09-10	rnd 4	type Rapid	result 1
		Opponent Drury, R (Riko)				Opponent Du Toit, M (Matthew)
2	2	Tournament Overberg Topskole 2022				Tournament Overberg Topskole 2022
		date 2022-08-20	rnd 4	type Standard	result 1	date 2022-08-20	rnd 5	type Standard	result 1
		Opponent Du Toit, V (Victor)				Opponent Benn, W (Waydin)
3	1	Tournament Overberg Topskole 2022				Tournament Overberg Topskole 2022
		date 2022-08-20	rnd 2	type Standard	result 1	date 2022-08-20	rnd 2	type Standard	result 1
		Opponent Van Der Vyver, M (Michae)				Opponent Van Der Vyver, M (Michae)

#	Games	Start				End
1	2	Tournament Overberg Topskole 2022				Tournament Overberg Topskole 2022
		date 2022-08-20	rnd 4	type Standard	result 1	date 2022-08-20	rnd 5	type Standard	result 1
		Opponent Du Toit, V (Victor)				Opponent Benn, W (Waydin)
2	1	Tournament Overberg Topskole 2022				Tournament Overberg Topskole 2022
		date 2022-08-20	rnd 2	type Standard	result 1	date 2022-08-20	rnd 2	type Standard	result 1
		Opponent Van Der Vyver, M (Michae)				Opponent Van Der Vyver, M (Michae)
3	1	Tournament Western Cape Schools 2022				Tournament Western Cape Schools 2022
		date 2022-05-29	rnd 6	type Standard	result 1	date 2022-05-29	rnd 6	type Standard	result 1
		Opponent Williamson, S (Sarah)				Opponent Williamson, S (Sarah)

#	Games	Start				End
1	2	Tournament Kleinmond Open Tournament 2022				Tournament Kleinmond Open Tournament 2022
		date 2022-09-10	rnd 3	type Rapid	result 1	date 2022-09-10	rnd 4	type Rapid	result 1
		Opponent Drury, R (Riko)				Opponent Du Toit, M (Matthew)
2	1	Tournament The Hermanus Open 2022				Tournament The Hermanus Open 2022
		date 2022-05-14	rnd 6	type Rapid	result 1	date 2022-05-14	rnd 6	type Rapid	result 1
		Opponent Scheepers, T (Tiaan)				Opponent Scheepers, T (Tiaan)
3	1	Tournament The Hermanus Open 2022				Tournament The Hermanus Open 2022
		date 2022-05-14	rnd 4	type Rapid	result 1	date 2022-05-14	rnd 4	type Rapid	result 1
		Opponent Mbuli, A (Anelisa)				Opponent Mbuli, A (Anelisa)

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	Magida ,S (Sinawo)	3	0	-425	3	0	-425	0	0	0	0	0	0
1	Magida ,S (Sinawo)	3	1258.7	833.7	3	1229.2	833.7	0	0	0	0	0	0
2	Mbuli ,A (Anelisa)	2	1	0	1	0	-425	1	1	425	0	0	0
2	Mbuli ,A (Anelisa)	2	1223.5	1223.5	1	1190.4	798.5	1	1200	1648.5	0	0	0
3	Muller ,C (Christiaan)	2	0	-425	0	0	0	2	0	-425	0	0	0
3	Muller ,C (Christiaan)	2	1399.8	974.8	0	0	0	2	1020.4	974.8	0	0	0
4	Mathias ,I (Imelda)	2	2	425	0	0	0	2	2	425	0	0	0
4	Mathias ,I (Imelda)	2	1178.1	1603.1	0	0	0	2	1165.2	1603.1	0	0	0
5	Oosthuizen ,A (Anke)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Oosthuizen ,A (Anke)	1	1257.7	832.7	1	1207	832.7	0	0	0	0	0	0
6	Liu ,A (Amy)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Liu ,A (Amy)	1	1304	879	1	1288.2	879	0	0	0	0	0	0
7	Liebenberg ,J (Jayden)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Liebenberg ,J (Jayden)	1	1244.3	819.3	1	1249.8	819.3	0	0	0	0	0	0
8	Du Toit ,V (Victor)	1	1	425	1	1	425	0	0	0	0	0	0
8	Du Toit ,V (Victor)	1	1174	1599	1	1200	1599	0	0	0	0	0	0
9	Makriga ,G (Gionia)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Makriga ,G (Gionia)	1	1190	765	1	1193.9	765	0	0	0	0	0	0
10	Van Zyl ,C (Cornelia Aletta)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Van Zyl ,C (Cornelia Aletta)	1	1171.3	746.3	1	1176.8	746.3	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

Buxmann, S (Sonya)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms