Chess South Africa Ratings Database

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Personal

Sidumo, A (Anga)

Chess SA id

1030140207

FIDE id

Date of birth

2003-02-03 (Adult)

Gender

Male

Region

Sedibeng (GSV)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-12-05

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1729.1	1746.3	1263.1	1304.1
Raw rating	1729.1	1746.3	1260.5	1304.1
Weighted rating	1714.1	1731.8	1263.1	1259.8
Weighted performance	1668.8	1701.9	0	0
Floor	1242.9	1266.4	771.1	804.1
K-factor	28	28	36	36
Min/Max rating change allowed	78	76.1	152.1	143
Highest rating	1756 2023-09-01	1766.4 2025-09-30	1392.1 2023-12-01	1304.1 2025-06-01
Highest raw rating	1742.9 2025-06-01	1766.4 2025-09-30	1271.1 2024-12-01	1304.1 2025-06-01
Highest weighted rating	1742.9 2025-07-01	1731.8 2026-01-01	1271.1 2025-07-01	1227.8 2025-08-01
Highest weighted performance	1756 2023-09-01	1752.2 2025-09-30	1392.1 2023-12-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	-0	0
New rating	1729.1	1746.3	1263.1	1304.1
Analysis
Rating	1729.1	1746.3	1263.1	1304.1
Raw rating	1729.1	1746.3	1260.5	1304.1
Weighted rating	1714.1	1731.8	1263.1
Weighted performance	1668.8	1701.9	0
K-factor	28	28	36	36
Floor	1242.9	1266.4	771.1	804.1
Max/Min rating change allowed	78	76.1	152.1	143
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	1729.1	1746.3	1260.5	1304.1
New weighted rating	1715.7	1733.6	1263.1	1265.1
New weighted performance	1657.5	1690.4	0	0
Temp new rating	1729.1	1746.3	1263.1	1304.1
Temp new rating +/-	0	0	-0	0
Final new rating +/-	0	0	-0	0
New rating	1729.1	1746.3	1263.1	1304.1
New K-factor	28	28	36	36
New floor	1242.9	1266.4	771.1	804.1

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	46	33	6	7
	54	34	11	9
	25	19	6	0
	23	23	0	0
	0	0	0	0
History	148	109	23	16

Games since
	Main 106	Standard 67		Rapid 23		Blitz 16
Gender	Male
Age group	Adult
Region	Sedibeng (GSV)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	239		91		5
Male	224		85		5
Adult	149		55		5
Adult Male	141		54		5
Standard
	RSA		Province		Region
Overall	198		85		4
Male	187		80		4
Adult	121		49		4
Adult Male	116		48		4
Rapid
	RSA		Province		Region
Overall	1297		228		34
Male	1036		178		28
Adult	218		65		6
Adult Male	205		62		6
Blitz
	RSA		Province		Region
Overall	292		95		6
Male	273		85		6
Adult	192		62		5
Adult Male	182		59		5


	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	46	25	54.35	37	1703.7	1740.6
Standard	33	19	57.58	64.4	1719	1783.4
Rapid	6	1.5	25	-212.5	1669.2	1456.7
Blitz	7	4.5	64.29	121.4	1660.9	1782.3
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	148	90	60.81	91.9	1552.1	1644
Standard	109	71	65.14	128.7	1554.5	1683.1
Rapid	23	10.5	45.65	-37	1574.1	1537.1
Blitz	16	8.5	53.12	26.6	1504.2	1530.8

Date	Main	Standard	Rapid	Blitz
2026-01-01	1729.1	1746.3	1260.5	1304.1
2025-11-30	1740.5	1766.4	1260.5	1304.1
2025-11-01	1740.5	1766.4	1260.5	1304.1
2025-09-30	1740.5	1766.4	1260.5	1304.1
2025-09-01	1704.5	1732	1260.5	1304.1
2025-08-01	1704.5	1732	1260.5	1304.1
2025-07-01	1721.1	1724.1	1271.1	1304.1
2025-06-01	1742.9	1752.3	1271.1	1304.1
2025-05-01	1708	1725	1271.1	1212.2
2025-04-01	1708	1725	1271.1	1212.2
2025-03-01	1698.9	1713.8	1271.1	1212.2
2025-02-01	1686.1	1697	1271.1	1212.2
2025-01-01	1650.6	1686.8	1271.1	1212.2
2024-12-01	1701.2	1728.2	1271.1	1200
2024-11-01	1689.2	1692.1	1252.4	1200
2024-10-01	1707.1	1713.7	1252.4	1200
2024-09-01	1707.1	1713.7	1252.4	1200
2024-11-01	1710.5	1715.9	1252.4	1200
2024-07-01	1697.5	1701.3	1252.4	1200
2024-06-01	1697.5	1701.3	1252.4	1200
2024-05-01	1697.5	1701.3	1252.4	1200
2024-04-01	1697.5	1701.3	1252.4	1200
2024-03-01	1719.1	1730.1	1252.4	1200
2024-02-01	1719.1	1730.1	1252.4	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	USSA Chess Championships 2025 (Open)	2025-12-01	2025-12-05	Standard	Johannesburg Metro (GJM)	9	9	6	Yes	Analysis
2	2025 Alekhine Open (A)	2025-09-06	2025-09-07	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
3	Eureka Chess Open 26 July 2025 (A)	2025-07-26	2025-07-26	Standard	Sedibeng (GSV)	5	5	2.5	Yes	Analysis
4	Evaton International Chess Day Rapid 19 July 2025 (A)	2025-07-19	2025-07-19	Rapid	Sedibeng (GSV)	6	6	1.5	Yes	Analysis
5	LS Vryheidsmonument Chess Open 21 Jun 2025 (A)	2025-06-21	2025-06-21	Standard	Sedibeng (GSV)	5	0	0	No	Analysis
6	HS Driehoek Chess Open 2025 (A+B)	2025-06-14	2025-06-14	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
7	Moja Chess Extravaganza 2025 (B)	2025-04-26	2025-05-01	Standard	Johannesburg Metro (GJM)	9	8	4	Yes	Analysis
8	Moja Chess Extravaganza 2025 (Blitz)	2025-04-26	2025-04-26	Blitz	Johannesburg Metro (GJM)	7	7	4.5	Yes	Analysis
9	2025 Chris Greyling Open Chess Tournament (A)	2025-03-15	2025-03-15	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
10	Laer Volkskool Open 15 Feb 2025 (A+B)	2025-02-15	2025-02-15	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
11	USSA Chess Championships 2024 (Open)	2024-11-29	2024-12-03	Standard	Tshwane (GTP)	9	9	5.5	Yes	Analysis
12	USSA Chess Championships 2024 (Blitz)	2024-12-01	2024-12-01	Blitz	Tshwane (GTP)	9	9	4	Yes	Analysis
13	Queens Gambit Chess Open 2024 (A)	2024-11-23	2024-11-23	Standard	Sedibeng (GSV)	5	5	4.5	Yes	Analysis
14	Laerskool Midvaal Rapid 16 Nov 2024 (Prestige)	2024-11-16	2024-11-16	Rapid	Sedibeng (GSV)	5	5	1	Yes	Analysis
15	Evaton #Bossoya Chess Rapid 09 Nov 2024 (A)	2024-11-09	2024-11-09	Rapid	Sedibeng (GSV)	6	6	4	Yes	Analysis
16	NWU Vaal Chess Open 12 Oct 2024 (A+B)	2024-10-12	2024-10-12	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
17	2024 Alekhine Open Chess Tournament (A)	2024-08-09	2024-08-10	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
18	Eureka Open 27 July 2024 (A)	2024-07-27	2024-07-27	Standard	Sedibeng (GSV)	5	5	1.5	Yes	Analysis
19	NG Kerk Vanderbijlpark Suid 2024 (A+B)	2024-02-24	2024-02-24	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
20	Chess Power House Festive Rapid 2023 (B)	2023-12-15	2023-12-15	Rapid	Johannesburg Metro (GJM)	6	6	4	Yes	Analysis
21	2023 Centurion Chess Open (B)	2023-09-23	2023-09-23	Standard	Tshwane (GTP)	5	5	5	Yes	Analysis
22	NG Kerk Vanderbijlpark Suid Open 2023 (A)	2023-08-26	2023-08-26	Standard	Sedibeng (GSV)	5	5	4.5	Yes	Analysis
23	Eureka Open 2023 (B)	2023-07-29	2023-07-29	Standard	Sedibeng (GSV)	5	4	3.5	Yes	Analysis
24	Valia's Chess Tournament 2023 (A)	2023-05-06	2023-05-06	Standard	Sedibeng (GSV)	5	5	3.5	Yes	Analysis
25	Ussa Chess Championships 2022 (Open)	2022-12-05	2022-12-09	Standard	Frances Baard (NCF)	9	9	6	Yes	Analysis
26	JNW Helpmekaar 2022 (Challengers)	2022-07-09	2022-07-09	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
27	Hoerskool Overvaal 2022 (A+B)	2022-06-11	2022-06-11	Standard	Sedibeng (GSV)	5	4	1.5	Yes	Analysis
28	LS Vryheidsmonument Chess Open 2022 (A+B)	2022-05-07	2022-05-07	Standard	Sedibeng (GSV)	5	5	3.5	Yes	Analysis

#	Games	Start				End
1	17	Tournament Valia's Chess Tournament 2023				Tournament 2023 Centurion Chess Open
		date 2023-05-06	rnd 3	type Standard	result 1	date 2023-09-23	rnd 5	type Standard	result 1
		Opponent Williams, A (Anika)				Opponent Maswikaneng, L (Legend)
2	9	Tournament Queens Gambit Chess Open 2024				Tournament USSA Chess Championships 2024
		date 2024-11-23	rnd 1	type Standard	result 1	date 2024-11-30	rnd 4	type Standard	result 1
		Opponent Minnaar, F (Frans)				Opponent Ntenga, G (Genius)
3	5	Tournament Eureka Chess Open 26 July 2025				Tournament 2025 Alekhine Open
		date 2025-07-26	rnd 5	type Standard	result 0.5	date 2025-09-07	rnd 4	type Standard	result 1
		Opponent Chueu, C (Calvin)				Opponent Stephen, B (Bulelani)

#	Games	Start				End
1	18	Tournament Valia's Chess Tournament 2023				Tournament NG Kerk Vanderbijlpark Suid 2024
		date 2023-05-06	rnd 3	type Standard	result 1	date 2024-02-24	rnd 1	type Standard	result 1
		Opponent Williams, A (Anika)				Opponent Kleynhans, C (Corne)
2	12	Tournament NWU Vaal Chess Open 12 Oct 2024				Tournament USSA Chess Championships 2024
		date 2024-10-12	rnd 4	type Standard	result 1	date 2024-12-01	rnd 5	type Standard	result 1
		Opponent Howat, LC (Logan)				Opponent Maqalika, C (Christian)
3	5	Tournament Eureka Chess Open 26 July 2025				Tournament 2025 Alekhine Open
		date 2025-07-26	rnd 5	type Standard	result 0.5	date 2025-09-07	rnd 4	type Standard	result 1
		Opponent Chueu, C (Calvin)				Opponent Stephen, B (Bulelani)

#	Games	Start				End
1	4	Tournament Evaton #Bossoya Chess Rapid 09 Nov 2024				Tournament Laerskool Midvaal Rapid 16 Nov 2024
		date 2024-11-09	rnd 4	type Rapid	result 1	date 2024-11-16	rnd 1	type Rapid	result 1
		Opponent Rakgabale, M (Mahlatse)				Opponent Mittermaier, G (Gunther)
2	2	Tournament Evaton International Chess Day Rapid 19 July 2025				Tournament Evaton International Chess Day Rapid 19 July 2025
		date 2025-07-19	rnd 1	type Rapid	result 1	date 2025-07-19	rnd 2	type Rapid	result 0.5
		Opponent Makhaya, B (Bonginkose)				Opponent Raspor, G (Gregor)
3	2	Tournament Chess Power House Festive Rapid 2023				Tournament Chess Power House Festive Rapid 2023
		date 2023-12-15	rnd 5	type Rapid	result 1	date 2023-12-15	rnd 6	type Rapid	result 1
		Opponent Nkosi, N (Nqobile)				Opponent Maponya, K (Kabelo)

#	Games	Start				End
1	3	Tournament Moja Chess Extravaganza 2025				Tournament Moja Chess Extravaganza 2025
		date 2025-04-26	rnd 5	type Blitz	result 1	date 2025-04-26	rnd 7	type Blitz	result 0.5
		Opponent Thakur, Y (Yuv)				Opponent Gokbulut, J (Julia)
2	2	Tournament USSA Chess Championships 2024				Tournament Moja Chess Extravaganza 2025
		date 2024-12-01	rnd 9	type Blitz	result 1	date 2025-04-26	rnd 1	type Blitz	result 1
		Opponent Mokitimi, U (Unathi)				Opponent Xin, M (Mengru)
3	2	Tournament USSA Chess Championships 2024				Tournament USSA Chess Championships 2024
		date 2024-12-01	rnd 6	type Blitz	result 1	date 2024-12-01	rnd 7	type Blitz	result 1
		Opponent Moeti, P (Phenyo)				Opponent Tereze, G (Grace)

#	Games	Start				End
1	8	Tournament NG Kerk Vanderbijlpark Suid Open 2023				Tournament 2023 Centurion Chess Open
		date 2023-08-26	rnd 3	type Standard	result 1	date 2023-09-23	rnd 5	type Standard	result 1
		Opponent Tlamama, T (Tshepang)				Opponent Maswikaneng, L (Legend)
2	5	Tournament JNW Helpmekaar 2022				Tournament Ussa Chess Championships 2022
		date 2022-07-09	rnd 3	type Standard	result 1	date 2022-12-05	rnd 2	type Standard	result 1
		Opponent Bazhko, A (Anton)				Opponent Mafalo, K (Khutso)
3	4	Tournament Laer Volkskool Open 15 Feb 2025				Tournament 2025 Chris Greyling Open Chess Tournament
		date 2025-02-15	rnd 3	type Standard	result 1	date 2025-03-15	rnd 1	type Standard	result 1
		Opponent Ndwambi, T (Talifhani)				Opponent Tseka, J (Junior)

#	Games	Start				End
1	9	Tournament NG Kerk Vanderbijlpark Suid Open 2023				Tournament NG Kerk Vanderbijlpark Suid 2024
		date 2023-08-26	rnd 3	type Standard	result 1	date 2024-02-24	rnd 1	type Standard	result 1
		Opponent Tlamama, T (Tshepang)				Opponent Kleynhans, C (Corne)
2	5	Tournament JNW Helpmekaar 2022				Tournament Ussa Chess Championships 2022
		date 2022-07-09	rnd 3	type Standard	result 1	date 2022-12-05	rnd 2	type Standard	result 1
		Opponent Bazhko, A (Anton)				Opponent Mafalo, K (Khutso)
3	4	Tournament Laer Volkskool Open 15 Feb 2025				Tournament 2025 Chris Greyling Open Chess Tournament
		date 2025-02-15	rnd 3	type Standard	result 1	date 2025-03-15	rnd 1	type Standard	result 1
		Opponent Ndwambi, T (Talifhani)				Opponent Tseka, J (Junior)

#	Games	Start				End
1	4	Tournament Evaton #Bossoya Chess Rapid 09 Nov 2024				Tournament Laerskool Midvaal Rapid 16 Nov 2024
		date 2024-11-09	rnd 4	type Rapid	result 1	date 2024-11-16	rnd 1	type Rapid	result 1
		Opponent Rakgabale, M (Mahlatse)				Opponent Mittermaier, G (Gunther)
2	2	Tournament Chess Power House Festive Rapid 2023				Tournament Chess Power House Festive Rapid 2023
		date 2023-12-15	rnd 5	type Rapid	result 1	date 2023-12-15	rnd 6	type Rapid	result 1
		Opponent Nkosi, N (Nqobile)				Opponent Maponya, K (Kabelo)
3	2	Tournament Chess Power House Festive Rapid 2023				Tournament Chess Power House Festive Rapid 2023
		date 2023-12-15	rnd 2	type Rapid	result 1	date 2023-12-15	rnd 3	type Rapid	result 1
		Opponent Israel, L (Leo)				Opponent Lebelo, T (Tekologo)

#	Games	Start				End
1	2	Tournament Moja Chess Extravaganza 2025				Tournament Moja Chess Extravaganza 2025
		date 2025-04-26	rnd 5	type Blitz	result 1	date 2025-04-26	rnd 6	type Blitz	result 1
		Opponent Thakur, Y (Yuv)				Opponent Mphasha, ME (Morwa Elsius)
2	2	Tournament USSA Chess Championships 2024				Tournament Moja Chess Extravaganza 2025
		date 2024-12-01	rnd 9	type Blitz	result 1	date 2025-04-26	rnd 1	type Blitz	result 1
		Opponent Mokitimi, U (Unathi)				Opponent Xin, M (Mengru)
3	2	Tournament USSA Chess Championships 2024				Tournament USSA Chess Championships 2024
		date 2024-12-01	rnd 6	type Blitz	result 1	date 2024-12-01	rnd 7	type Blitz	result 1
		Opponent Moeti, P (Phenyo)				Opponent Tereze, G (Grace)

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	Ndwambi ,T (Talifhani)	5	2.5	0	4	2.5	106.2	1	0	-425	0	0	0
1	Ndwambi ,T (Talifhani)	5	1681.8	1681.8	4	1630.3	1788.1	1	1502.3	1256.8	0	0	0
2	Theron ,A (Andre)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
2	Theron ,A (Andre)	3	1583.6	1725.3	3	1551.9	1725.3	0	0	0	0	0	0
3	Mittermaier ,G (Gunther)	3	2	141.7	1	1	425	2	1	0	0	0	0
3	Mittermaier ,G (Gunther)	3	1509.1	1650.8	1	1513.4	1934.1	2	1222.4	1509.1	0	0	0
4	Buba ,V (Vukile)	3	0	-425	0	0	0	3	0	-425	0	0	0
4	Buba ,V (Vukile)	3	1727.9	1302.9	0	0	0	3	1379.1	1302.9	0	0	0
5	Mann ,I (Iowan)	2	2	425	2	2	425	0	0	0	0	0	0
5	Mann ,I (Iowan)	2	1670.4	2095.4	2	1673.7	2095.4	0	0	0	0	0	0
6	Naidoo ,K (Kajol)	2	2	425	2	2	425	0	0	0	0	0	0
6	Naidoo ,K (Kajol)	2	1405.3	1830.3	2	1409.8	1830.3	0	0	0	0	0	0
7	Chibase ,N (Nkosana)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
7	Chibase ,N (Nkosana)	2	1638.2	1425.7	2	1637.1	1425.7	0	0	0	0	0	0
8	Pretorius ,HS (Hendrik Stefanus)	2	2	425	2	2	425	0	0	0	0	0	0
8	Pretorius ,HS (Hendrik Stefanus)	2	1266.2	1691.2	2	1253.2	1691.2	0	0	0	0	0	0
9	Mlambo ,S (Sihle)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
9	Mlambo ,S (Sihle)	2	1563.1	1350.6	2	1538.4	1350.6	0	0	0	0	0	0
10	Vundla ,N (Mthandazo)	2	0	-425	2	0	-425	0	0	0	0	0	0
10	Vundla ,N (Mthandazo)	2	1762.2	1337.2	2	1760.3	1337.2	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Sidumo, A (Anga)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms