Chess South Africa Ratings Database

PLAYER PAGE

Personal

Botha, E (Eduan)

Chess SA id

1120112770

FIDE id

Date of birth

2012-08-12 (U14)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-09-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1433

Item	Main	Standard	Rapid	Blitz
Rating	1561	1525.2	1534.5	1256.8
Raw rating	1555.2	1519.4	1534.5	1256.8
Weighted rating	1561	1525.2	1522.2	1256.8
Weighted performance	1464.5	1438.2	1337	0
Floor	1100.3	1076.4	1034.5	756.8
K-factor	28	32	32	36
Min/Max rating change allowed	100	105.2	103	152.9
Highest rating	1600.3 2025-06-01	1576.4 2025-06-01	1675.7 2020-02-01	1442.8 2023-09-01
Highest raw rating	1600.3 2025-06-01	1576.4 2025-06-01	1534.5 2025-08-01	1256.8 2024-02-01
Highest weighted rating	1600.3 2024-10-01	1576.4 2024-10-01	1517 2025-08-01	1256.8 2025-08-01
Highest weighted performance	1591 2023-05-01	1528.8 2023-05-01	1675.7 2020-02-01	1442.8 2023-09-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.4	-0.2	0	0
New rating	1560.6	1525	1534.5	1256.8
Analysis
Rating	1561	1525.2	1534.5	1256.8
Raw rating	1555.2	1519.4	1534.5	1256.8
Weighted rating	1561	1525.2	1522.2
Weighted performance	1464.5	1438.2	1337
K-factor	28	32	32	36
Floor	1100.3	1076.4	1034.5	756.8
Max/Min rating change allowed	100	105.2	103	152.9
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	1555.2	1519.4	1534.5	1256.8
New weighted rating	1560.6	1525	1523.6	1256.8
New weighted performance	1455.4	1429.2	1327.8	0
Temp new rating	1560.6	1525	1534.5	1256.8
Temp new rating +/-	-0.4	-0.2	0	0
Final new rating +/-	-0.4	-0.2	0	0
New rating	1560.6	1525	1534.5	1256.8
New K-factor	28	32	32	36
New floor	1100.3	1076.4	1034.5	756.8

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	40	34	6	0
	33	22	11	0
	43	24	12	7
	41	24	17	0
	11	0	11	0
History	211	142	62	7

Games since
	Main 73	Standard 56		Rapid 17		Blitz 0
Gender	Male
Age group	U14
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	869		261		156
Male	770		228		136
U14	110		34		16
U14 Male	90		26		13
Standard
	RSA		Province		Region
Overall	1032		286		166
Male	892		240		144
U14	139		45		19
U14 Male	111		34		16
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
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	40	25.5	63.75	116.9	1464.5	1581.4
Standard	34	22.5	66.18	137.5	1433.6	1571.1
Rapid	6	3	50	0	1639.3	1639.3
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	211	141	66.82	143	1336.6	1479.6
Standard	142	92.5	65.14	128.7	1327.7	1456.4
Rapid	62	45.5	73.39	198.8	1333.5	1532.3
Blitz	7	3	42.86	-60.7	1542.1	1481.4

Date	Main	Standard	Rapid	Blitz
2025-11-01	1555.2	1519.4	1534.5	1256.8
2025-09-30	1565	1529.6	1534.5	1256.8
2025-09-01	1565	1529.6	1534.5	1256.8
2025-08-01	1565	1529.6	1534.5	1256.8
2025-07-01	1600.3	1576.4	1517.6	1256.8
2025-06-01	1600.3	1576.4	1517.6	1256.8
2025-05-01	1553.6	1521.9	1517.6	1256.8
2025-04-01	1553.6	1521.9	1517.6	1256.8
2025-03-01	1565.3	1530.9	1517.6	1256.8
2025-02-01	1547.9	1507	1517.6	1256.8
2025-01-01	1482.1	1440.1	1517.6	1256.8
2024-12-01	1482.1	1440.1	1517.6	1256.8
2024-11-01	1578.8	1542	1517.6	1256.8
2024-10-01	1578.8	1542	1517.6	1256.8
2024-09-01	1578.8	1542	1517.6	1256.8
2024-08-01	1578.8	1542	1517.6	1256.8
2024-07-01	1584.2	1542	1523.4	1256.8
2024-09-01	1559.1	1507.8	1523.4	1256.8
2024-05-01	1559.1	1507.8	1523.4	1256.8
2024-04-01	1559.1	1507.8	1523.4	1256.8
2024-03-01	1547.9	1507.8	1488.5	1256.8
2024-02-01	1562.8	1523.2	1488.5	1256.8
2024-01-01	1562.8	1523.2	1488.5	1256.8
2023-12-01	1562.8	1523.2	1488.5	1256.8

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	Cape Town Chess Federation Club League 2025 (A)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	1	0	Yes	Analysis
2	Bellville Rapid 2025 (A)	2025-06-07	2025-06-07	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
3	Bellville Club Championship 2025 (B)	2025-03-03	2025-05-26	Standard	Cape Town (WCT)	9	9	5.5	Yes	Analysis
4	Western Cape Schools Individual Championship 2025 (U13 Boys)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	5	Yes	Analysis
5	Western Cape Closed 2025 (B)	2025-03-08	2025-03-09	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis
6	CT Metro Schools Individual Closed 2025 (U13 Open)	2025-03-01	2025-03-02	Standard	Cape Town (WCT)	6	6	5	Yes	Analysis
7	CT Metro North Schools Chess Individual Trials 2025 (U13 Open)	2025-02-08	2025-02-09	Standard	Cape Town (WCT)	6	6	5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Cape Town Chess Federation Club League 2025 (A)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	1	0	Yes	Analysis
2	Bellville Rapid 2025 (A)	2025-06-07	2025-06-07	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
3	Bellville Club Championship 2025 (B)	2025-03-03	2025-05-26	Standard	Cape Town (WCT)	9	9	5.5	Yes	Analysis
4	Western Cape Schools Individual Championship 2025 (U13 Boys)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	5	Yes	Analysis
5	Western Cape Closed 2025 (B)	2025-03-08	2025-03-09	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis
6	CT Metro Schools Individual Closed 2025 (U13 Open)	2025-03-01	2025-03-02	Standard	Cape Town (WCT)	6	6	5	Yes	Analysis
7	CT Metro North Schools Chess Individual Trials 2025 (U13 Open)	2025-02-08	2025-02-09	Standard	Cape Town (WCT)	6	6	5	Yes	Analysis
8	Bellville Chess Club Champs 2024 (B)	2024-08-07	2024-11-05	Standard	Cape Town (WCT)	14	11	1.5	Yes	Analysis
9	CT District North Top Schools 2024 (U13 Mixed)	2024-07-27	2024-07-27	Rapid	Cape Town (WCT)	5	5	3.5	Yes	Analysis
10	Cape Town Chess Federation Closed Chess Championships 2024 (U14)	2024-06-15	2024-06-16	Standard	Cape Town (WCT)	6	6	4.5	Yes	Analysis
11	Cape Town Open Rapid Chess Championship 2024 (U12)	2024-03-16	2024-03-16	Rapid	Cape Town (WCT)	6	6	5	Yes	Analysis
12	North District School Trials 2024 (U13 Boys)	2024-02-03	2024-02-03	Standard	Cape Town (WCT)	5	5	3.5	Yes	Analysis
13	Western Cape Closed Championship 2023 (U12)	2023-09-23	2023-09-23	Rapid	Cape Town (WCT)	6	6	5	Yes	Analysis
14	Western Cape Closed Championship 2023 (Blitz)	2023-09-23	2023-09-25	Blitz	Cape Town (WCT)	7	7	3	Yes	Analysis
15	WP Closed 2023 (U12)	2023-06-16	2023-06-17	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
16	Western Cape PS Individuals 2023 (U11 Boys)	2023-05-05	2023-05-06	Standard	Cape Town (WCT)	6	6	5.5	Yes	Analysis
17	Cape Town Open 2023 (U12)	2023-03-25	2023-03-25	Rapid	Cape Town (WCT)	6	6	6	Yes	Analysis
18	Cape Town Metro Schools Chess Closed Individuals 2023 (U11 Boys)	2023-03-03	2023-03-04	Standard	Cape Town (WCT)	6	6	5	Yes	Analysis
19	North District School Trials 2023 (U11 Boys)	2023-02-03	2023-02-04	Standard	Cape Town (WCT)	6	6	4.5	Yes	Analysis
20	Kenridge Rapid 2022 (U12)	2022-11-05	2022-11-05	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis
21	Metro Rapid 2022 (U11 Boys)	2022-10-22	2022-10-22	Rapid	Cape Town (WCT)	5	5	3	Yes	Analysis
22	WP Closed 2022 (U12)	2022-06-16	2022-06-16	Standard	Cape Town (WCT)	6	6	4.5	Yes	Analysis
23	Western Cape Schools 2022 (U11 Boys)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	6	5	Yes	Analysis
24	Metro WP Schools Chess Trials 2022 (U11 Boys)	2022-04-22	2022-04-23	Standard	Cape Town (WCT)	6	6	4.5	Yes	Analysis
25	District North 2022 (U11)	2022-03-05	2022-03-05	Rapid	Cape Town (WCT)	6	6	5	Yes	Analysis
26	Cape Winelands Open 2022 (U12)	2022-02-12	2022-02-13	Standard	Cape Winelands (WCW)	6	6	5	Yes	Analysis
27	Western Cape Schools 2021 (U9 Boys)	2021-10-23	2021-10-23	Rapid	Overberg (WOS)	5	5	4	Yes	Analysis
28	Western Cape Closed 2020 (Rapid)	2021-03-06	2021-03-06	Rapid	Cape Town (WCT)	7	6	2	Yes	Analysis
29	2020 Metro Trials (U9 Boys)	2020-03-13	2020-03-14	Standard	Cape Town (WCT)	5	5	4	Yes	Analysis
30	Metro North Individual Trials 2020 (U7+U9)	2020-02-07	2020-02-08	Standard	Cape Town (WCT)	5	5	5	Yes	Analysis
31	2020 Welgemoed Chess Challenge (U10)	2020-02-29	2020-02-29	Rapid	Cape Town (WCT)	5	5	5	Yes	Analysis
32	2019 South African Junior Team Championships (U8A)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	6	Yes	Analysis
33	2019 Kraaifontein Open (Development)	2019-12-07	2019-12-08	Standard	Cape Town (WCT)	6	6	1.5	Yes	Analysis
34	Curro Durbanville Chess Tournament 2019 (Premier)	2019-08-23	2019-08-24	Standard	Cape Town (WCT)	6	6	1	Yes	Analysis
35	2019 WP Youth Open (D)	2019-07-13	2019-07-13	Standard	Cape Town (WCT)	5	5	2	Yes	Analysis
36	Stellenberg Youth Chess Championship 2019 (E)	2019-05-01	2019-05-01	Standard	Cape Town (WCT)	5	4	3	Yes	Analysis

#	Games	Start				End
1	18	Tournament Cape Town Metro Schools Chess Closed Individuals 2023				Tournament WP Closed 2023
		date 2023-03-04	rnd 4	type Standard	result 1	date 2023-06-16	rnd 3	type Standard	result 1
		Opponent Copley, M (Murray)				Opponent Sher, J (Jonah)
2	15	Tournament 2019 South African Junior Team Championships				Tournament 2020 Metro Trials
		date 2020-01-07	rnd 6	type Standard	result 1	date 2020-03-14	rnd 3	type Standard	result 1
		Opponent Ollewagen, J (Juhanell)				Opponent Bell, L (Luke)
3	10	Tournament Cape Town Open Rapid Chess Championship 2024				Tournament Cape Town Chess Federation Closed Chess Championships 2024
		date 2024-03-16	rnd 2	type Rapid	result 1	date 2024-06-16	rnd 5	type Standard	result 1
		Opponent Krynauw, E (Eben)				Opponent Ngidi, N (Ndumiso)

#	Games	Start				End
1	12	Tournament Cape Town Metro Schools Chess Closed Individuals 2023				Tournament WP Closed 2023
		date 2023-03-04	rnd 4	type Standard	result 1	date 2023-06-16	rnd 3	type Standard	result 1
		Opponent Copley, M (Murray)				Opponent Sher, J (Jonah)
2	10	Tournament 2019 South African Junior Team Championships				Tournament 2020 Metro Trials
		date 2020-01-07	rnd 6	type Standard	result 1	date 2020-03-14	rnd 3	type Standard	result 1
		Opponent Ollewagen, J (Juhanell)				Opponent Bell, L (Luke)
3	7	Tournament Western Cape Schools 2022				Tournament WP Closed 2022
		date 2022-05-28	rnd 3	type Standard	result 1	date 2022-06-16	rnd 3	type Standard	result 1
		Opponent Bester, J (Juandre)				Opponent Smith, Z (Zion)

#	Games	Start				End
1	10	Tournament Cape Town Open 2023				Tournament Western Cape Closed Championship 2023
		date 2023-03-25	rnd 1	type Rapid	result 1	date 2023-09-23	rnd 4	type Rapid	result 1
		Opponent Calitz, S (Steyn)				Opponent Minnaar, A (Adriaan)
2	7	Tournament Cape Town Open Rapid Chess Championship 2024				Tournament CT District North Top Schools 2024
		date 2024-03-16	rnd 2	type Rapid	result 1	date 2024-07-27	rnd 2	type Rapid	result 1
		Opponent Krynauw, E (Eben)				Opponent Troskie, G (Gerhard)
3	5	Tournament 2020 Welgemoed Chess Challenge				Tournament 2020 Welgemoed Chess Challenge
		date 2020-02-29	rnd 1	type Rapid	result 1	date 2020-02-29	rnd 5	type Rapid	result 1
		Opponent Eilers Le Riche, N (Noah)				Opponent Janse Van Rensburg, N (Nicolas)

#	Games	Start				End
1	1	Tournament Western Cape Closed Championship 2023				Tournament Western Cape Closed Championship 2023
		date 2023-09-25	rnd 6	type Blitz	result 1	date 2023-09-25	rnd 6	type Blitz	result 1
		Opponent Maruma, K (Katlego)				Opponent Maruma, K (Katlego)
2	1	Tournament Western Cape Closed Championship 2023				Tournament Western Cape Closed Championship 2023
		date 2023-09-24	rnd 4	type Blitz	result 1	date 2023-09-24	rnd 4	type Blitz	result 1
		Opponent Jenkins, T (Tauriq)				Opponent Jenkins, T (Tauriq)
3	1	Tournament Western Cape Closed Championship 2023				Tournament Western Cape Closed Championship 2023
		date 2023-09-23	rnd 2	type Blitz	result 1	date 2023-09-23	rnd 2	type Blitz	result 1
		Opponent Chizeya, D (Daniellle)				Opponent Chizeya, D (Daniellle)

#	Games	Start				End
1	15	Tournament 2019 South African Junior Team Championships				Tournament 2020 Metro Trials
		date 2020-01-07	rnd 6	type Standard	result 1	date 2020-03-14	rnd 3	type Standard	result 1
		Opponent Ollewagen, J (Juhanell)				Opponent Bell, L (Luke)
2	14	Tournament Cape Town Metro Schools Chess Closed Individuals 2023				Tournament Western Cape PS Individuals 2023
		date 2023-03-04	rnd 4	type Standard	result 1	date 2023-05-06	rnd 5	type Standard	result 1
		Opponent Copley, M (Murray)				Opponent Meder, T (Tristan)
3	8	Tournament Cape Town Open Rapid Chess Championship 2024				Tournament Cape Town Chess Federation Closed Chess Championships 2024
		date 2024-03-16	rnd 2	type Rapid	result 1	date 2024-06-15	rnd 3	type Standard	result 1
		Opponent Krynauw, E (Eben)				Opponent Zheng, Y (Yi)

#	Games	Start				End
1	10	Tournament 2019 South African Junior Team Championships				Tournament 2020 Metro Trials
		date 2020-01-07	rnd 6	type Standard	result 1	date 2020-03-14	rnd 3	type Standard	result 1
		Opponent Ollewagen, J (Juhanell)				Opponent Bell, L (Luke)
2	8	Tournament Cape Town Metro Schools Chess Closed Individuals 2023				Tournament Western Cape PS Individuals 2023
		date 2023-03-04	rnd 4	type Standard	result 1	date 2023-05-06	rnd 5	type Standard	result 1
		Opponent Copley, M (Murray)				Opponent Meder, T (Tristan)
3	7	Tournament Western Cape Schools 2022				Tournament WP Closed 2022
		date 2022-05-28	rnd 3	type Standard	result 1	date 2022-06-16	rnd 3	type Standard	result 1
		Opponent Bester, J (Juandre)				Opponent Smith, Z (Zion)

#	Games	Start				End
1	10	Tournament Cape Town Open 2023				Tournament Western Cape Closed Championship 2023
		date 2023-03-25	rnd 1	type Rapid	result 1	date 2023-09-23	rnd 4	type Rapid	result 1
		Opponent Calitz, S (Steyn)				Opponent Minnaar, A (Adriaan)
2	7	Tournament Cape Town Open Rapid Chess Championship 2024				Tournament CT District North Top Schools 2024
		date 2024-03-16	rnd 2	type Rapid	result 1	date 2024-07-27	rnd 2	type Rapid	result 1
		Opponent Krynauw, E (Eben)				Opponent Troskie, G (Gerhard)
3	5	Tournament 2020 Welgemoed Chess Challenge				Tournament 2020 Welgemoed Chess Challenge
		date 2020-02-29	rnd 1	type Rapid	result 1	date 2020-02-29	rnd 5	type Rapid	result 1
		Opponent Eilers Le Riche, N (Noah)				Opponent Janse Van Rensburg, N (Nicolas)

#	Games	Start				End
1	1	Tournament Western Cape Closed Championship 2023				Tournament Western Cape Closed Championship 2023
		date 2023-09-25	rnd 6	type Blitz	result 1	date 2023-09-25	rnd 6	type Blitz	result 1
		Opponent Maruma, K (Katlego)				Opponent Maruma, K (Katlego)
2	1	Tournament Western Cape Closed Championship 2023				Tournament Western Cape Closed Championship 2023
		date 2023-09-24	rnd 4	type Blitz	result 1	date 2023-09-24	rnd 4	type Blitz	result 1
		Opponent Jenkins, T (Tauriq)				Opponent Jenkins, T (Tauriq)
3	1	Tournament Western Cape Closed Championship 2023				Tournament Western Cape Closed Championship 2023
		date 2023-09-23	rnd 2	type Blitz	result 1	date 2023-09-23	rnd 2	type Blitz	result 1
		Opponent Chizeya, D (Daniellle)				Opponent Chizeya, D (Daniellle)

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	Singh ,S (Shaurya)	6	2	-141.7	3	1	-141.7	3	1	-141.7	0	0	0
1	Singh ,S (Shaurya)	6	1429.3	1287.6	3	1396.9	1287.6	3	1361	1287.6	0	0	0
2	Strydom ,H (Henroux)	5	1.5	-170	4	0.5	-318.8	1	1	425	0	0	0
2	Strydom ,H (Henroux)	5	1509.7	1339.7	4	1484.2	1191	1	1425.6	1934.7	0	0	0
3	Osborne ,R (Ryan Eugene)	4	1	-212.5	4	1	-212.5	0	0	0	0	0	0
3	Osborne ,R (Ryan Eugene)	4	1312.3	1099.8	4	1299.9	1099.8	0	0	0	0	0	0
4	Weideman ,J (Janko)	4	0	-425	3	0	-425	1	0	-425	0	0	0
4	Weideman ,J (Janko)	4	1649.6	1224.6	3	1741.7	1224.6	1	1236.8	1224.6	0	0	0
5	Muller ,H (Helgard)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
5	Muller ,H (Helgard)	3	1335	1476.7	3	1311	1476.7	0	0	0	0	0	0
6	Jeftha ,L (Liam)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
6	Jeftha ,L (Liam)	3	1215.5	1073.8	3	1194.6	1073.8	0	0	0	0	0	0
7	Holland ,RI (Richard Ingo)	3	0.5	-283.3	3	0.5	-283.3	0	0	0	0	0	0
7	Holland ,RI (Richard Ingo)	3	1382.6	1099.3	3	1379.8	1099.3	0	0	0	0	0	0
8	Calitz ,S (Steyn)	3	2	141.7	2	1	0	1	1	425	0	0	0
8	Calitz ,S (Steyn)	3	1318.8	1460.5	2	1339.3	1318.8	1	1158	1743.8	0	0	0
9	De Villiers ,C (Christiaan)	3	3	425	1	1	425	2	2	425	0	0	0
9	De Villiers ,C (Christiaan)	3	1386.3	1811.3	1	1488.7	1811.3	2	1373.1	1811.3	0	0	0
10	Minnaar ,A (Adriaan)	3	3	425	0	0	0	3	3	425	0	0	0
10	Minnaar ,A (Adriaan)	3	1255	1680	0	0	0	3	1227.6	1680	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Botha, E (Eduan)

Ratings

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Last 24 raw ratings

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Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms