Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Tonder, A (Alexander)

Chess SA id

1120151467

FIDE id

Date of birth

2012-12-23 (U14)

Gender

Male

Region

Overberg (WOS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-02-22

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

938.6

Item	Main	Standard	Rapid	Blitz
Rating	1093.7	1139.3	1094.1	1200
Raw rating	1093.7	1139.3	1093.9	1200
Weighted rating	1092.7	1135.8	1094.1	1200
Weighted performance	935.7	0	980.8	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	192.9	180.8	192.9	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	1093.7	1139.3	1094.1	1200
Analysis
Rating	1093.7	1139.3	1094.1	1200
Raw rating	1093.7	1139.3	1093.9	1200
Weighted rating	1092.7	1135.8	1094.1
Weighted performance	935.7	0	980.8
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	192.9	180.8	192.9	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	1093.7	1139.3	1093.9	1200
New weighted rating	1092.5	1135.7	1094.1	1200
New weighted performance	935.3	0	980.4	0
Temp new rating	1093.7	1139.3	1094.1	1200
Temp new rating +/-	0	0	-0	0
Final new rating +/-	0	0	-0	0
New rating	1093.7	1139.3	1094.1	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	24	0	24
	11	6	5
	19	4	15
	0	0	0
	0	0	0
History	54	10	44

Games since
	Main 40	Standard 6		Rapid 34		Blitz 0
Gender	Male
Age group	U14
Region	Overberg (WOS)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	4373		1464		151
Male	3213		988		86
U14	861		293		30
U14 Male	594		176		15
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	1888		955		147
Male	1410		696		93
U14	410		215		31
U14 Male	277		141		17
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 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	24	7.5	31.25	-159.4	1218.8	1059.4
Standard	0	0	0	0	0	0
Rapid	24	7.5	31.25	-159.4	1218.8	1059.4
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	54	14.5	26.85	-196.8	1219.9	1023.1
Standard	10	1	10	-340	1321.4	981.4
Rapid	44	13.5	30.68	-164.2	1196.8	1032.6
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1093.7	1139.3	1093.9	1200
2025-09-01	1093.7	1139.3	1093.9	1200
2025-08-01	1093.7	1139.3	1093.9	1200
2025-07-01	1093.7	1139.3	1093.6	1200
2025-06-01	1093.7	1139.3	1093.1	1200
2025-05-01	1093.7	1139.3	1092.4	1200
2025-04-01	1093.7	1139.3	1091.4	1200
2025-03-01	1092.5	1139.3	1088.4	1200
2025-02-01	1093.4	1137.7	1096	1200
2025-01-01	1074.7	1100	1096	1200
2024-12-01	1074.7	1100	1096	1200
2024-11-01	1074.7	1100	1096	1200
2024-10-01	1074.7	1100	1096	1200
2024-09-01	1104.9	1156	1096	1200
2024-08-01	1104.9	1156	1096	1200
2024-07-01	1104.9	1156	1096	1200
2024-06-01	1104.9	1156	1096	1200
2024-08-01	1104.9	1156	1096	1200
2024-04-01	1104.9	1156	1096	1200
2024-03-01	1104.9	1156	1096	1200
2024-02-01	1104.9	1156	1096	1200
2024-01-01	1104.5	1156	1091.2	1200
2023-12-01	1104.5	1156	1091.2	1200
2023-11-01	1104.5	1156	1091.2	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	Overberg Schools - PS Trials (Region 1) 2025 (U13 Boys)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	2	Yes	Analysis
2	Laerskool Welgemoed Rapid 2025 (U14)	2025-02-15	2025-02-15	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
3	Curro Hermanus Summer Open 2025 (U13)	2025-02-08	2025-02-08	Rapid	Overberg (WOS)	6	6	2	Yes	Analysis
4	Overberg Schools & Federation Open 2025 (U13)	2025-02-01	2025-02-01	Rapid	Overberg (WOS)	6	6	1.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Overberg Schools - PS Trials (Region 1) 2025 (U13 Boys)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	2	Yes	Analysis
2	Laerskool Welgemoed Rapid 2025 (U14)	2025-02-15	2025-02-15	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
3	Curro Hermanus Summer Open 2025 (U13)	2025-02-08	2025-02-08	Rapid	Overberg (WOS)	6	6	2	Yes	Analysis
4	Overberg Schools & Federation Open 2025 (U13)	2025-02-01	2025-02-01	Rapid	Overberg (WOS)	6	6	1.5	Yes	Analysis
5	Western Cape Top Schools Championship 2024 (U13 Mixed)	2024-08-30	2024-09-01	Standard	Eden (WEG)	6	6	0	Yes	Analysis
6	Overberg Open Rapid 2024 (U13)	2024-01-27	2024-01-27	Rapid	Overberg (WOS)	5	5	2	Yes	Analysis
7	Kingsway Open 2023 (Beginners)	2023-10-28	2023-10-28	Rapid	Overberg (WOS)	5	5	3	Yes	Analysis
8	Overberg Top Schools 2023 (U11)	2023-08-05	2023-08-05	Standard	Overberg (WOS)	5	4	1	Yes	Analysis
9	Hermanus Rapid 2023 (C)	2023-04-22	2023-04-22	Rapid	Overberg (WOS)	6	5	0	Yes	Analysis
10	Overberg Primary School Trials (Region 2)	2023-02-24	2023-03-10	Rapid	Overberg (WOS)	6	5	1	Yes	Analysis

#	Games	Start				End
1	3	Tournament Overberg Schools & Federation Open 2025				Tournament Overberg Schools & Federation Open 2025
		date 2025-02-01	rnd 3	type Rapid	result 0.5	date 2025-02-01	rnd 5	type Rapid	result 0.5
		Opponent Collins, E (Esme)				Opponent Carroll, R (Riley James)
2	2	Tournament Curro Hermanus Summer Open 2025				Tournament Curro Hermanus Summer Open 2025
		date 2025-02-08	rnd 2	type Rapid	result 1	date 2025-02-08	rnd 3	type Rapid	result 1
		Opponent Prins, C (Christiaan)				Opponent Erasmus, L (Lerushka)
3	2	Tournament Overberg Open Rapid 2024				Tournament Overberg Open Rapid 2024
		date 2024-01-27	rnd 2	type Rapid	result 1	date 2024-01-27	rnd 3	type Rapid	result 1
		Opponent Rudman, A (Alana)				Opponent Aggenbach, Y (Yanke)

#	Games	Start				End
1	1	Tournament Overberg Top Schools 2023				Tournament Overberg Top Schools 2023
		date 2023-08-05	rnd 1	type Standard	result 1	date 2023-08-05	rnd 1	type Standard	result 1
		Opponent Nzambo, P (Pearl)				Opponent Nzambo, P (Pearl)

#	Games	Start				End
1	3	Tournament Overberg Schools & Federation Open 2025				Tournament Overberg Schools & Federation Open 2025
		date 2025-02-01	rnd 3	type Rapid	result 0.5	date 2025-02-01	rnd 5	type Rapid	result 0.5
		Opponent Collins, E (Esme)				Opponent Carroll, R (Riley James)
2	2	Tournament Curro Hermanus Summer Open 2025				Tournament Curro Hermanus Summer Open 2025
		date 2025-02-08	rnd 2	type Rapid	result 1	date 2025-02-08	rnd 3	type Rapid	result 1
		Opponent Prins, C (Christiaan)				Opponent Erasmus, L (Lerushka)
3	2	Tournament Overberg Open Rapid 2024				Tournament Overberg Open Rapid 2024
		date 2024-01-27	rnd 2	type Rapid	result 1	date 2024-01-27	rnd 3	type Rapid	result 1
		Opponent Rudman, A (Alana)				Opponent Aggenbach, Y (Yanke)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Curro Hermanus Summer Open 2025				Tournament Curro Hermanus Summer Open 2025
		date 2025-02-08	rnd 2	type Rapid	result 1	date 2025-02-08	rnd 3	type Rapid	result 1
		Opponent Prins, C (Christiaan)				Opponent Erasmus, L (Lerushka)
2	2	Tournament Overberg Open Rapid 2024				Tournament Overberg Open Rapid 2024
		date 2024-01-27	rnd 2	type Rapid	result 1	date 2024-01-27	rnd 3	type Rapid	result 1
		Opponent Rudman, A (Alana)				Opponent Aggenbach, Y (Yanke)
3	2	Tournament Kingsway Open 2023				Tournament Kingsway Open 2023
		date 2023-10-28	rnd 4	type Rapid	result 1	date 2023-10-28	rnd 5	type Rapid	result 1
		Opponent Roeloffze, J (James)				Opponent Mienie, M (Minki)

#	Games	Start				End
1	1	Tournament Overberg Top Schools 2023				Tournament Overberg Top Schools 2023
		date 2023-08-05	rnd 1	type Standard	result 1	date 2023-08-05	rnd 1	type Standard	result 1
		Opponent Nzambo, P (Pearl)				Opponent Nzambo, P (Pearl)

#	Games	Start				End
1	2	Tournament Curro Hermanus Summer Open 2025				Tournament Curro Hermanus Summer Open 2025
		date 2025-02-08	rnd 2	type Rapid	result 1	date 2025-02-08	rnd 3	type Rapid	result 1
		Opponent Prins, C (Christiaan)				Opponent Erasmus, L (Lerushka)
2	2	Tournament Overberg Open Rapid 2024				Tournament Overberg Open Rapid 2024
		date 2024-01-27	rnd 2	type Rapid	result 1	date 2024-01-27	rnd 3	type Rapid	result 1
		Opponent Rudman, A (Alana)				Opponent Aggenbach, Y (Yanke)
3	2	Tournament Kingsway Open 2023				Tournament Kingsway Open 2023
		date 2023-10-28	rnd 4	type Rapid	result 1	date 2023-10-28	rnd 5	type Rapid	result 1
		Opponent Roeloffze, J (James)				Opponent Mienie, M (Minki)

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	Otto ,T (Taylor)	2	0	-425	0	0	0	2	0	-425	0	0	0
1	Otto ,T (Taylor)	2	1276.4	851.4	0	0	0	2	1311.3	851.4	0	0	0
2	Prinsloo ,J (Jaco)	2	0	-425	0	0	0	2	0	-425	0	0	0
2	Prinsloo ,J (Jaco)	2	1265.1	840.1	0	0	0	2	1206.4	840.1	0	0	0
3	Rudman ,A (Alana)	2	1	0	0	0	0	2	1	0	0	0	0
3	Rudman ,A (Alana)	2	1181.3	1181.3	0	0	0	2	1207.9	1181.3	0	0	0
4	Greeff ,G (Giteau)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Greeff ,G (Giteau)	1	1438.5	1013.5	1	1307.1	1013.5	0	0	0	0	0	0
5	Prins ,E (Eddie)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Prins ,E (Eddie)	1	1575.7	1150.7	1	1563.6	1150.7	0	0	0	0	0	0
6	Van Der Westhuizen ,M (Mika)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Van Der Westhuizen ,M (Mika)	1	1400.9	975.9	1	1454.9	975.9	0	0	0	0	0	0
7	Beyers ,S (Skylar)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Beyers ,S (Skylar)	1	1264.5	839.5	1	1249.4	839.5	0	0	0	0	0	0
8	Mazala ,A (Asakhe)	1	0	-425	0	0	0	1	0	-425	0	0	0
8	Mazala ,A (Asakhe)	1	997.5	572.5	0	0	0	1	1174	572.5	0	0	0
9	Davids ,T (Tyron)	1	0	-425	0	0	0	1	0	-425	0	0	0
9	Davids ,T (Tyron)	1	1200	775	0	0	0	1	1200	775	0	0	0
10	Kotze ,M (Marlie)	1	0	-425	0	0	0	1	0	-425	0	0	0
10	Kotze ,M (Marlie)	1	1112.8	687.8	0	0	0	1	1198	687.8	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Van Tonder, A (Alexander)

Ratings

Game statistics

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms