Chess South Africa Ratings Database

PLAYER PAGE

Personal

Bester, S (Sebastian)

Chess SA id

1140134817

FIDE id

Date of birth

2014-07-12 (U12)

Gender

Male

Region

Overberg (WOS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-05-18

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1181.8

Item	Main	Standard	Rapid	Blitz
Rating	1342.4	1294.7	1366.4	1155.2
Raw rating	1342.2	1294.7	1366.4	1155.2
Weighted rating	1342.4	1294.4	1364.4	1155.2
Weighted performance	1218.8	1131.6	1177.3	0
Floor	874.8	829.4	866.4	700
K-factor	36	36	36	36
Min/Max rating change allowed	135.4	144.9	130.8	176.7
Highest rating	1380.3 2022-05-01	1375.1 2022-05-01	1409.7 2022-05-01	1200 2018-10-01
Highest raw rating	1374.8 2024-04-01	1329.4 2024-04-01	1366.4 2025-03-01	1200 2020-01-01
Highest weighted rating	1374.8 2024-10-01	1329.4 2024-10-01	1363.1 2025-08-01	1200 2018-10-01
Highest weighted performance	1380.3 2022-05-01	1375.1 2022-05-01	1409.7 2022-05-01	1200 2020-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0.1	0	0	0
New rating	1342.5	1294.7	1366.4	1155.2
Analysis
Rating	1342.4	1294.7	1366.4	1155.2
Raw rating	1342.2	1294.7	1366.4	1155.2
Weighted rating	1342.4	1294.4	1364.4
Weighted performance	1218.8	1131.6	1177.3
K-factor	36	36	36	36
Floor	874.8	829.4	866.4	700
Max/Min rating change allowed	135.4	144.9	130.8	176.7
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	1342.2	1294.7	1366.4	1155.2
New weighted rating	1342.5	1294.4	1364.9	1155.2
New weighted performance	1218.4	1131.1	1176.9	0
Temp new rating	1342.5	1294.7	1366.4	1155.2
Temp new rating +/-	0.1	0	0	0
Final new rating +/-	0.1	0	0	0
New rating	1342.5	1294.7	1366.4	1155.2
New K-factor	36	36	36	36
New floor	874.8	829.4	866.4	700

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	23	11	12	0
	16	11	5	0
	31	20	11	0
	28	15	11	2
	5	0	5	0
History	103	57	44	2

Games since
	Main 43	Standard 26		Rapid 17		Blitz 0
Gender	Male
Age group	U12
Region	Overberg (WOS)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	2754		878		67
Male	2218		658		44
U12	402		138		17
U12 Male	296		95		11
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 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	23	13	56.52	55.4	1302.2	1357.6
Standard	11	5	45.45	-38.6	1362.6	1324
Rapid	12	8	66.67	141.7	1246.8	1388.5
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	103	60.5	58.74	74.3	1272.7	1347
Standard	57	29.5	51.75	14.9	1308.5	1323.4
Rapid	44	31	70.45	173.9	1226.7	1400.5
Blitz	2	0	0	-425	1265.8	840.8

Date	Main	Standard	Rapid	Blitz
2025-09-30	1342.2	1294.7	1366.4	1155.2
2025-09-01	1342.2	1294.7	1366.4	1155.2
2025-08-01	1342.2	1294.7	1366.4	1155.2
2025-07-01	1342.1	1294.7	1366.4	1155.2
2025-06-01	1341.8	1293.9	1366.4	1155.2
2025-05-01	1366.3	1310.7	1366.4	1155.2
2025-04-01	1366.3	1310.7	1366.4	1155.2
2025-03-01	1351.9	1291.7	1366.4	1155.2
2025-02-01	1335.2	1291.2	1364.7	1155.2
2025-01-01	1330.3	1284.4	1364.7	1155.2
2024-12-01	1330.3	1284.4	1364.7	1155.2
2024-11-01	1330.3	1284.4	1364.7	1155.2
2024-10-01	1330.3	1284.4	1364.7	1155.2
2024-09-01	1330.3	1284.4	1364.7	1155.2
2024-08-01	1330.3	1284.4	1364.7	1155.2
2024-07-01	1330.3	1284.4	1364.7	1155.2
2024-06-01	1330.3	1284.4	1364.7	1155.2
2024-08-01	1374.8	1329.4	1364.7	1155.2
2024-04-01	1374.8	1329.4	1364.7	1155.2
2024-03-01	1327.5	1289.8	1339.9	1155.2
2024-02-01	1327.5	1289.8	1339.9	1155.2
2024-01-01	1327.5	1289.8	1339.9	1155.2
2023-12-01	1327.5	1289.8	1339.9	1155.2
2023-11-01	1346.9	1309.6	1339.9	1155.2

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 Individual Championship 2025 (U11 Boys)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	2	Yes	Analysis
2	Overberg Schools - PS Closed 2025 (U11 Boys)	2025-03-08	2025-03-08	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
3	Overberg Schools - PS Trials (Region 1) 2025 (U11 Boys)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	4	Yes	Analysis
4	Overberg Schools & Federation Open 2025 (U11)	2025-02-01	2025-02-01	Rapid	Overberg (WOS)	6	6	4	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Western Cape Schools Individual Championship 2025 (U11 Boys)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	2	Yes	Analysis
2	Overberg Schools - PS Closed 2025 (U11 Boys)	2025-03-08	2025-03-08	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
3	Overberg Schools - PS Trials (Region 1) 2025 (U11 Boys)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	4	Yes	Analysis
4	Overberg Schools & Federation Open 2025 (U11)	2025-02-01	2025-02-01	Rapid	Overberg (WOS)	6	6	4	Yes	Analysis
5	Western Cape PS Individuals Championship 2024 (U11 Boys)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	1.5	Yes	Analysis
6	Overberg Schools - PS Closed 2024 (U11 Boys)	2024-03-16	2024-03-16	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
7	Overberg Schools - PS Trials Region 3 2024 (U11 Boys)	2024-03-02	2024-03-02	Rapid	Overberg (WOS)	5	5	4	Yes	Analysis
8	2023 Western Cape Rural Cup (U12)	2023-12-09	2023-12-10	Standard	Cape Winelands (WCW)	5	4	1	Yes	Analysis
9	Overberg Top Schools 2023 (U7+U9)	2023-08-05	2023-08-05	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
10	Western Cape PS Individuals 2023 (U9 Boys)	2023-05-05	2023-05-06	Standard	Cape Town (WCT)	6	6	2.5	Yes	Analysis
11	Overberg School Chess Closed Tournament 2023 (U9 Boys)	2023-03-25	2023-03-25	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
12	Overberg Primary School Trials (Region 2)	2023-02-24	2023-03-10	Rapid	Overberg (WOS)	6	6	4	Yes	Analysis
13	Overberg Schools Open Tournament 2023 (U10)	2023-02-11	2023-02-11	Rapid	Overberg (WOS)	5	5	4	Yes	Analysis
14	WCCA Rural Cup 2022 (U10)	2022-08-13	2022-08-14	Standard	Overberg (WOS)	5	4	1	Yes	Analysis
15	WCCA Rural Cup Blitz 2022	2022-07-12	2022-07-12	Blitz	Overberg (WOS)	5	2	0	Yes	Analysis
16	The Hermanus Open 2022 (U10)	2022-05-14	2022-05-14	Rapid	Overberg (WOS)	6	6	5	Yes	Analysis
17	Western Cape Schools 2022 (U9 Boys)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis
18	OCF Open 2022 (U10)	2022-04-09	2022-04-09	Rapid	Overberg (WOS)	5	5	3.5	Yes	Analysis
19	Overberg Primary Schools Closed 2022 (U9 Boys)	2022-03-12	2022-03-12	Standard	Overberg (WOS)	5	5	2.5	Yes	Analysis
20	Overberg Schools Trials 2021 (U9)	2021-09-18	2021-09-18	Rapid	Overberg (WOS)	5	5	2.5	Yes	Analysis

#	Games	Start				End
1	12	Tournament OCF Open 2022				Tournament Western Cape Schools 2022
		date 2022-04-09	rnd 2	type Rapid	result 1	date 2022-05-28	rnd 2	type Standard	result 1
		Opponent Hanekom, D (Derick)				Opponent Viljoen, A (Adrihan)
2	4	Tournament Overberg Schools & Federation Open 2025				Tournament Overberg Schools - PS Trials (Region 1) 2025
		date 2025-02-01	rnd 6	type Rapid	result 1	date 2025-02-22	rnd 3	type Rapid	result 1
		Opponent Ngalo, E (Entle)				Opponent Buhr, H (Heinrich)
3	4	Tournament Overberg Schools - PS Trials Region 3 2024				Tournament Overberg Schools - PS Trials Region 3 2024
		date 2024-03-02	rnd 1	type Rapid	result 1	date 2024-03-02	rnd 4	type Rapid	result 1
		Opponent Collins, M (Marius)				Opponent Coetzer, H (Hanro)

#	Games	Start				End
1	4	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 4	type Standard	result 1
		Opponent Nel, K (Kuhle)				Opponent Badenhorst, M (Marinus)
2	4	Tournament Overberg School Chess Closed Tournament 2023				Tournament Western Cape PS Individuals 2023
		date 2023-03-25	rnd 4	type Standard	result 1	date 2023-05-05	rnd 2	type Standard	result 0.5
		Opponent Van Eeden, C (Christian)				Opponent Badenhorst, M (Marinus)
3	3	Tournament Overberg Schools - PS Closed 2024				Tournament Overberg Schools - PS Closed 2024
		date 2024-03-16	rnd 1	type Standard	result 1	date 2024-03-16	rnd 3	type Standard	result 1
		Opponent Barnard, C (Charel)				Opponent De Wet, J (James)

#	Games	Start				End
1	13	Tournament OCF Open 2022				Tournament Overberg Schools Open Tournament 2023
		date 2022-04-09	rnd 2	type Rapid	result 1	date 2023-02-11	rnd 3	type Rapid	result 1
		Opponent Hanekom, D (Derick)				Opponent Beyers, R (Riekie)
2	6	Tournament Overberg Primary School Trials				Tournament Overberg Schools - PS Trials Region 3 2024
		date 2023-03-10	rnd 5	type Rapid	result 1	date 2024-03-02	rnd 4	type Rapid	result 1
		Opponent Van Den Berg, D (Daniel)				Opponent Coetzer, H (Hanro)
3	4	Tournament Overberg Schools & Federation Open 2025				Tournament Overberg Schools - PS Trials (Region 1) 2025
		date 2025-02-01	rnd 6	type Rapid	result 1	date 2025-02-22	rnd 3	type Rapid	result 1
		Opponent Ngalo, E (Entle)				Opponent Buhr, H (Heinrich)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Overberg Schools & Federation Open 2025				Tournament Overberg Schools - PS Trials (Region 1) 2025
		date 2025-02-01	rnd 6	type Rapid	result 1	date 2025-02-22	rnd 3	type Rapid	result 1
		Opponent Ngalo, E (Entle)				Opponent Buhr, H (Heinrich)
2	4	Tournament Overberg Schools - PS Trials Region 3 2024				Tournament Overberg Schools - PS Trials Region 3 2024
		date 2024-03-02	rnd 1	type Rapid	result 1	date 2024-03-02	rnd 4	type Rapid	result 1
		Opponent Collins, M (Marius)				Opponent Coetzer, H (Hanro)
3	4	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 4	type Standard	result 1
		Opponent Nel, K (Kuhle)				Opponent Badenhorst, M (Marinus)

#	Games	Start				End
1	4	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 4	type Standard	result 1
		Opponent Nel, K (Kuhle)				Opponent Badenhorst, M (Marinus)
2	3	Tournament Overberg Schools - PS Closed 2024				Tournament Overberg Schools - PS Closed 2024
		date 2024-03-16	rnd 1	type Standard	result 1	date 2024-03-16	rnd 3	type Standard	result 1
		Opponent Barnard, C (Charel)				Opponent De Wet, J (James)
3	3	Tournament Overberg School Chess Closed Tournament 2023				Tournament Western Cape PS Individuals 2023
		date 2023-03-25	rnd 4	type Standard	result 1	date 2023-05-05	rnd 1	type Standard	result 1
		Opponent Van Eeden, C (Christian)				Opponent Esterhuysen, A (Aj)

#	Games	Start				End
1	6	Tournament Overberg Primary School Trials				Tournament Overberg Schools - PS Trials Region 3 2024
		date 2023-03-10	rnd 5	type Rapid	result 1	date 2024-03-02	rnd 4	type Rapid	result 1
		Opponent Van Den Berg, D (Daniel)				Opponent Coetzer, H (Hanro)
2	4	Tournament Overberg Schools & Federation Open 2025				Tournament Overberg Schools - PS Trials (Region 1) 2025
		date 2025-02-01	rnd 6	type Rapid	result 1	date 2025-02-22	rnd 3	type Rapid	result 1
		Opponent Ngalo, E (Entle)				Opponent Buhr, H (Heinrich)
3	3	Tournament Overberg Schools Open Tournament 2023				Tournament Overberg Schools Open Tournament 2023
		date 2023-02-11	rnd 1	type Rapid	result 1	date 2023-02-11	rnd 3	type Rapid	result 1
		Opponent Foye, R (Rhossanah)				Opponent Beyers, R (Riekie)

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	Badenhorst ,M (Marinus)	5	2.5	0	5	2.5	0	0	0	0	0	0	0
1	Badenhorst ,M (Marinus)	5	1281.1	1281.1	5	1269.5	1281.1	0	0	0	0	0	0
2	Judge-Campbell ,J (Jackson)	4	1.5	-106.2	2	0	-425	2	1.5	212.5	0	0	0
2	Judge-Campbell ,J (Jackson)	4	1307.9	1201.7	2	1284.1	882.9	2	1262.9	1520.4	0	0	0
3	Coetzer ,H (Hanro)	3	1	-141.7	1	0	-425	2	1	0	0	0	0
3	Coetzer ,H (Hanro)	3	1368.7	1227	1	1387.9	943.7	2	1246.4	1368.7	0	0	0
4	Nel ,K (Kuhle)	3	1	-141.7	1	1	425	2	0	-425	0	0	0
4	Nel ,K (Kuhle)	3	1249.5	1107.8	1	1223	1674.5	2	1260.1	824.5	0	0	0
5	Harman ,C (Connor)	3	0.5	-283.3	0	0	0	3	0.5	-283.3	0	0	0
5	Harman ,C (Connor)	3	1248.5	965.2	0	0	0	3	1228.8	965.2	0	0	0
6	Zimbler ,A (Alexander)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Zimbler ,A (Alexander)	2	1226.4	801.4	2	1227.6	801.4	0	0	0	0	0	0
7	Van Eeden ,C (Christian)	2	2	425	2	2	425	0	0	0	0	0	0
7	Van Eeden ,C (Christian)	2	1283.8	1708.8	2	1285.3	1708.8	0	0	0	0	0	0
8	Dreyer ,L (Leah)	2	2	425	1	1	425	1	1	425	0	0	0
8	Dreyer ,L (Leah)	2	1148.9	1573.9	1	1142.8	1573.9	1	1188.8	1573.9	0	0	0
9	Jacobs ,N (Nicolaas)	2	2	425	1	1	425	1	1	425	0	0	0
9	Jacobs ,N (Nicolaas)	2	1166.6	1591.6	1	1160.8	1591.6	1	1200	1591.6	0	0	0
10	Van Der Walt ,T (Tristan)	2	1	0	1	0.5	0	1	0.5	0	0	0	0
10	Van Der Walt ,T (Tristan)	2	1175.2	1175.2	1	1117.6	1175.2	1	1235.6	1175.2	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Bester, S (Sebastian)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms