Chess South Africa Ratings Database

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Personal

Botha, J (Johann Alexander)

Chess SA id

1160160634

FIDE id

Date of birth

2016-12-12 (U10)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-07-19

Personal details last changed

2025-03-06

Junior GPX Games

49.2

Junior GPX Points

1232.6

Item	Main	Standard	Rapid	Blitz
Rating	1429.9	1449.2	1353	1166.5
Raw rating	1429.9	1449.2	1353	1165.1
Weighted rating	1330.4	1320.8	1301.2	1166.5
Weighted performance	1343.5	1404.6	1238.9	0
Floor	947.5	962.3	853	700
K-factor	32	32	36	36
Min/Max rating change allowed	119.5	116.3	133.3	174.3
Highest rating	1447.5 2025-07-01	1462.3 2025-07-01	1353 2025-04-01	1200 2018-10-01
Highest raw rating	1447.5 2025-07-01	1462.3 2025-07-01	1353 2025-04-01	1200 2024-03-01
Highest weighted rating	1304.1 2025-08-01	1290.2 2025-08-01	1285.2 2025-08-01	1200 2018-10-01
Highest weighted performance	1407.7 2025-07-01	1462.3 2024-08-01	1341.9 2024-09-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	-0.7
New rating	1429.9	1449.2	1353	1165.8
Analysis
Rating	1429.9	1449.2	1353	1166.5
Raw rating	1429.9	1449.2	1353	1165.1
Weighted rating	1330.4	1320.8	1301.2
Weighted performance	1343.5	1404.6	1238.9
K-factor	32	32	36	36
Floor	947.5	962.3	853	700
Max/Min rating change allowed	119.5	116.3	133.3	174.3
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	1429.9	1449.2	1353	1165.1
New weighted rating	1342.4	1334.8	1308.4	1165.8
New weighted performance	1343	1404.1	1238.4	0
Temp new rating	1429.9	1449.2	1353	1165.8
Temp new rating +/-	0	0	0	-0.7
Final new rating +/-	0	0	0	-0.7
New rating	1429.9	1449.2	1353	1165.8
New K-factor	32	32	36	36
New floor	947.5	962.3	853	700

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	67	39	19	9
	39	5	27	7
	6	0	6	0
	0	0	0	0
	0	0	0	0
History	112	44	52	16

Games since
	Main 106	Standard 44		Rapid 46		Blitz 16
Gender	Male
Age group	U10
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	1870		562		86
Male	1568		454		66
U10	114		30		3
U10 Male	102		24		3
Standard
	RSA		Province		Region
Overall	1576		424		57
Male	1317		338		44
U10	94		25		2
U10 Male	82		19		2
Rapid
	RSA		Province		Region
Overall	728		376		55
Male	609		312		43
U10	48		26		2
U10 Male	41		21		2
Blitz
	RSA		Province		Region
Overall	526		186		10
Male	464		167		8
U10	21		6		1
U10 Male	14		4		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	67	41.5	61.94	101.5	1305.8	1407.3
Standard	39	26.5	67.95	152.6	1307.3	1459.9
Rapid	19	12	63.16	111.8	1262.3	1374.1
Blitz	9	3	33.33	-141.7	1391.3	1249.6
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	112	64	57.14	60.7	1282.4	1343.2
Standard	44	29.5	67.05	144.9	1296.4	1441.3
Rapid	52	30.5	58.65	73.6	1249.5	1323.1
Blitz	16	4	25	-212.5	1351.1	1138.6

Date	Main	Standard	Rapid	Blitz
2025-09-30	1429.9	1449.2	1353	1165.1
2025-09-01	1429.9	1449.2	1353	1165.1
2025-08-01	1429.9	1449.2	1353	1165.1
2025-07-01	1447.5	1462.3	1353	1172.2
2025-06-01	1399.1	1389.9	1353	1172.2
2025-05-01	1396.4	1352.6	1353	1172.2
2025-04-01	1396.4	1352.6	1353	1172.2
2025-03-01	1376.9	1321.1	1316	1172.2
2025-02-01	1263.5	1233.2	1298.4	1170.1
2025-01-01	1265.8	1223	1298.4	1130.5
2024-12-01	1265.8	1223	1298.4	1130.5
2024-11-01	1265.8	1223	1298.4	1130.5
2024-10-01	1272	1223	1327.9	1130.5
2024-09-01	1223.7	1223	1231.7	1130.5
2024-08-01	1175.8	1200	1162.2	1200
2024-07-01	1175.8	1200	1162.2	1200
2024-06-01	1175.8	1200	1162.2	1200
2024-08-01	1175.8	1200	1162.2	1200
2024-04-01	1175.8	1200	1162.2	1200
2024-03-01	1175.8	1200	1162.2	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	1200
2023-11-01	1200	1200	1200	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	Cape Winelands Open 2025 (U10)	2025-07-19	2025-07-19	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
2	South African Open 2025 (U10 Open)	2025-07-03	2025-07-05	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
3	South African Open 2025 (Blitz)	2025-07-02	2025-07-02	Blitz	Johannesburg Metro (GJM)	9	9	3	Yes	Analysis
4	2025 WC Rural Cup (U10)	2025-06-14	2025-06-15	Standard	Eden (WEG)	6	6	4	Yes	Analysis
5	Western Cape Schools Individual Championship 2025 (U9 Boys)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis
6	Cape Town Open Chess Festival 2025 (Junior Rapid)	2025-03-21	2025-03-21	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
7	Steinitz Festival 2025 (U10)	2025-03-15	2025-03-15	Rapid	Cape Town (WCT)	7	7	5	Yes	Analysis
8	Cape Winelands Schools Prestige 2025 (U9 Boys)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	6	6	4.5	Yes	Analysis
9	Cape Winelands Schools - Trials 1 2025 (U9 Boys)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	5	Yes	Analysis
10	Laerskool Welgemoed Rapid 2025 (U10)	2025-02-15	2025-02-15	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis
11	Marie Delport Memorial 2025 (U10 Boys+Girls)	2025-01-25	2025-01-26	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Cape Winelands Open 2025 (U10)	2025-07-19	2025-07-19	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
2	South African Open 2025 (U10 Open)	2025-07-03	2025-07-05	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
3	South African Open 2025 (Blitz)	2025-07-02	2025-07-02	Blitz	Johannesburg Metro (GJM)	9	9	3	Yes	Analysis
4	2025 WC Rural Cup (U10)	2025-06-14	2025-06-15	Standard	Eden (WEG)	6	6	4	Yes	Analysis
5	Western Cape Schools Individual Championship 2025 (U9 Boys)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis
6	Cape Town Open Chess Festival 2025 (Junior Rapid)	2025-03-21	2025-03-21	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
7	Steinitz Festival 2025 (U10)	2025-03-15	2025-03-15	Rapid	Cape Town (WCT)	7	7	5	Yes	Analysis
8	Cape Winelands Schools Prestige 2025 (U9 Boys)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	6	6	4.5	Yes	Analysis
9	Cape Winelands Schools - Trials 1 2025 (U9 Boys)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	5	Yes	Analysis
10	Laerskool Welgemoed Rapid 2025 (U10)	2025-02-15	2025-02-15	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis
11	Marie Delport Memorial 2025 (U10 Boys+Girls)	2025-01-25	2025-01-26	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis
12	UCT Open Chess Championship 2024 (U10)	2024-10-12	2024-10-13	Rapid	Cape Town (WCT)	6	5	2	Yes	Analysis
13	Kingsway Chess Open 2024 (U8)	2024-09-14	2024-09-14	Rapid	Overberg (WOS)	6	6	4	Yes	Analysis
14	Kleinmond Chess Club Open 2024 (U10)	2024-09-07	2024-09-07	Rapid	Overberg (WOS)	6	6	4	Yes	Analysis
15	Stellenbosch Primary 2024 (U9)	2024-08-17	2024-08-17	Rapid	Cape Winelands (WCW)	5	5	4	Yes	Analysis
16	2nd Young Minds Classic 2024 (Junior)	2024-08-10	2024-08-10	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis
17	2nd Young Minds Classic 2024 (Blitz)	2024-08-09	2024-08-09	Blitz	Cape Town (WCT)	7	7	1	Yes	Analysis
18	Gear Up Mzansi Rapid 2024 (Junior)	2024-02-17	2024-02-17	Rapid	Johannesburg Metro (GJM)	5	5	1.5	Yes	Analysis
19	Emalahleni Winter Open 2023 (Juniors)	2023-08-05	2023-08-05	Rapid	Nkangala (MNW)	6	6	3	Yes	Analysis

#	Games	Start				End
1	7	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools Prestige 2025
		date 2025-02-22	rnd 1	type Standard	result 1	date 2025-03-08	rnd 2	type Standard	result 1
		Opponent Beinecke, A (Alexander)				Opponent Kleinbooi, R (Riley)
2	5	Tournament Steinitz Festival 2025				Tournament Cape Town Open Chess Festival 2025
		date 2025-03-15	rnd 5	type Rapid	result 1	date 2025-03-21	rnd 2	type Rapid	result 1
		Opponent Zembetha, M (Mary)				Opponent Rudman, D (Diego)
3	4	Tournament 2025 WC Rural Cup				Tournament 2025 WC Rural Cup
		date 2025-06-14	rnd 2	type Standard	result 1	date 2025-06-15	rnd 5	type Standard	result 1
		Opponent Heasman, J (JD)				Opponent Flores, Z (Zhoe)

#	Games	Start				End
1	7	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools Prestige 2025
		date 2025-02-22	rnd 1	type Standard	result 1	date 2025-03-08	rnd 2	type Standard	result 1
		Opponent Beinecke, A (Alexander)				Opponent Kleinbooi, R (Riley)
2	4	Tournament 2025 WC Rural Cup				Tournament 2025 WC Rural Cup
		date 2025-06-14	rnd 2	type Standard	result 1	date 2025-06-15	rnd 5	type Standard	result 1
		Opponent Heasman, J (JD)				Opponent Flores, Z (Zhoe)
3	4	Tournament Cape Winelands Schools Prestige 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-03-08	rnd 4	type Standard	result 1	date 2025-05-17	rnd 1	type Standard	result 1
		Opponent Beukes, R (Rian)				Opponent Kleinbooi, R (Riley)

#	Games	Start				End
1	5	Tournament Steinitz Festival 2025				Tournament Cape Town Open Chess Festival 2025
		date 2025-03-15	rnd 5	type Rapid	result 1	date 2025-03-21	rnd 2	type Rapid	result 1
		Opponent Zembetha, M (Mary)				Opponent Rudman, D (Diego)
2	4	Tournament Stellenbosch Primary 2024				Tournament Kleinmond Chess Club Open 2024
		date 2024-08-17	rnd 3	type Rapid	result 1	date 2024-09-07	rnd 1	type Rapid	result 1
		Opponent Van Griethuysen, H (Henry)				Opponent Le Roux, C (Carmen)
3	3	Tournament Laerskool Welgemoed Rapid 2025				Tournament Laerskool Welgemoed Rapid 2025
		date 2025-02-15	rnd 3	type Rapid	result 1	date 2025-02-15	rnd 5	type Rapid	result 1
		Opponent Visser, L (Luan)				Opponent Castle, J (Jameson)

#	Games	Start				End
1	2	Tournament South African Open 2025				Tournament South African Open 2025
		date 2025-07-02	rnd 5	type Blitz	result 1	date 2025-07-02	rnd 6	type Blitz	result 1
		Opponent Burger, A (Agnar)				Opponent Botha, L (Leane)
2	1	Tournament South African Open 2025				Tournament South African Open 2025
		date 2025-07-02	rnd 9	type Blitz	result 1	date 2025-07-02	rnd 9	type Blitz	result 1
		Opponent Venter, L (Luan)				Opponent Venter, L (Luan)
3	1	Tournament 2nd Young Minds Classic 2024				Tournament 2nd Young Minds Classic 2024
		date 2024-08-09	rnd 7	type Blitz	result 1	date 2024-08-09	rnd 7	type Blitz	result 1
		Opponent Lekau, A (Atlegang Jordan)				Opponent Lekau, A (Atlegang Jordan)

#	Games	Start				End
1	7	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools Prestige 2025
		date 2025-02-22	rnd 1	type Standard	result 1	date 2025-03-08	rnd 2	type Standard	result 1
		Opponent Beinecke, A (Alexander)				Opponent Kleinbooi, R (Riley)
2	5	Tournament Steinitz Festival 2025				Tournament Cape Town Open Chess Festival 2025
		date 2025-03-15	rnd 5	type Rapid	result 1	date 2025-03-21	rnd 2	type Rapid	result 1
		Opponent Zembetha, M (Mary)				Opponent Rudman, D (Diego)
3	4	Tournament 2025 WC Rural Cup				Tournament 2025 WC Rural Cup
		date 2025-06-14	rnd 2	type Standard	result 1	date 2025-06-15	rnd 5	type Standard	result 1
		Opponent Heasman, J (JD)				Opponent Flores, Z (Zhoe)

#	Games	Start				End
1	7	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools Prestige 2025
		date 2025-02-22	rnd 1	type Standard	result 1	date 2025-03-08	rnd 2	type Standard	result 1
		Opponent Beinecke, A (Alexander)				Opponent Kleinbooi, R (Riley)
2	4	Tournament 2025 WC Rural Cup				Tournament 2025 WC Rural Cup
		date 2025-06-14	rnd 2	type Standard	result 1	date 2025-06-15	rnd 5	type Standard	result 1
		Opponent Heasman, J (JD)				Opponent Flores, Z (Zhoe)
3	3	Tournament South African Open 2025				Tournament Cape Winelands Open 2025
		date 2025-07-04	rnd 4	type Standard	result 1	date 2025-07-19	rnd 1	type Standard	result 1
		Opponent Conradie, M (Marcus)				Opponent Steel, L (Layla)

#	Games	Start				End
1	5	Tournament Steinitz Festival 2025				Tournament Cape Town Open Chess Festival 2025
		date 2025-03-15	rnd 5	type Rapid	result 1	date 2025-03-21	rnd 2	type Rapid	result 1
		Opponent Zembetha, M (Mary)				Opponent Rudman, D (Diego)
2	4	Tournament Stellenbosch Primary 2024				Tournament Kleinmond Chess Club Open 2024
		date 2024-08-17	rnd 3	type Rapid	result 1	date 2024-09-07	rnd 1	type Rapid	result 1
		Opponent Van Griethuysen, H (Henry)				Opponent Le Roux, C (Carmen)
3	3	Tournament Laerskool Welgemoed Rapid 2025				Tournament Laerskool Welgemoed Rapid 2025
		date 2025-02-15	rnd 3	type Rapid	result 1	date 2025-02-15	rnd 5	type Rapid	result 1
		Opponent Visser, L (Luan)				Opponent Castle, J (Jameson)

#	Games	Start				End
1	2	Tournament South African Open 2025				Tournament South African Open 2025
		date 2025-07-02	rnd 5	type Blitz	result 1	date 2025-07-02	rnd 6	type Blitz	result 1
		Opponent Burger, A (Agnar)				Opponent Botha, L (Leane)
2	1	Tournament South African Open 2025				Tournament South African Open 2025
		date 2025-07-02	rnd 9	type Blitz	result 1	date 2025-07-02	rnd 9	type Blitz	result 1
		Opponent Venter, L (Luan)				Opponent Venter, L (Luan)
3	1	Tournament 2nd Young Minds Classic 2024				Tournament 2nd Young Minds Classic 2024
		date 2024-08-09	rnd 7	type Blitz	result 1	date 2024-08-09	rnd 7	type Blitz	result 1
		Opponent Lekau, A (Atlegang Jordan)				Opponent Lekau, A (Atlegang Jordan)

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	Botha ,L (Leane)	3	3	425	1	1	425	1	1	425	1	1	425
1	Botha ,L (Leane)	3	1215	1640	1	1200	1640	1	1257.8	1640	1	1183.7	1640
2	Zwartz ,Z (Zeke)	3	1	-141.7	0	0	0	3	1	-141.7	0	0	0
2	Zwartz ,Z (Zeke)	3	1375.4	1233.7	0	0	0	3	1386.2	1233.7	0	0	0
3	Vermeulen ,E (Elster)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Vermeulen ,E (Elster)	2	1588.4	1163.4	2	1588.3	1163.4	0	0	0	0	0	0
4	Kleinbooi ,R (Riley)	2	2	425	2	2	425	0	0	0	0	0	0
4	Kleinbooi ,R (Riley)	2	1221.1	1646.1	2	1215.6	1646.1	0	0	0	0	0	0
5	Flores ,Z (Zhoe)	2	2	425	2	2	425	0	0	0	0	0	0
5	Flores ,Z (Zhoe)	2	1443.1	1868.1	2	1460.8	1868.1	0	0	0	0	0	0
6	Smit ,G (Gerrit)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
6	Smit ,G (Gerrit)	2	1366.1	1578.6	2	1320.9	1578.6	0	0	0	0	0	0
7	Coetzee ,S (Sean)	2	2	425	2	2	425	0	0	0	0	0	0
7	Coetzee ,S (Sean)	2	1238.6	1663.6	2	1178.2	1663.6	0	0	0	0	0	0
8	Ramonyaluoe ,M (Madalitso)	2	0	-425	2	0	-425	0	0	0	0	0	0
8	Ramonyaluoe ,M (Madalitso)	2	1506	1081	2	1499.1	1081	0	0	0	0	0	0
9	Kuhn ,D (Dian)	2	2	425	1	1	425	1	1	425	0	0	0
9	Kuhn ,D (Dian)	2	1279.4	1704.4	1	1300.1	1704.4	1	1236.3	1704.4	0	0	0
10	Chang ,C (Caelem)	2	0	-425	0	0	0	2	0	-425	0	0	0
10	Chang ,C (Caelem)	2	1197.7	772.7	0	0	0	2	1194.1	772.7	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Botha, J (Johann Alexander)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms