Chess South Africa Ratings Database

PLAYER PAGE

Personal

Nkosi, S (Siphesihle)

Chess SA id

107086151

FIDE id

Date of birth

2007-02-19 (U20)

Gender

Male

Region

Nkangala (MNW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1120.9

Item	Main	Standard	Rapid	Blitz
Rating	1437.5	1374.7	1062.4	500
Raw rating	1361.2	1305.2	1062.4	500
Weighted rating	1437.5	1374.7	1062.4	500
Weighted performance	1022.6	961.1	503.3	0
Floor	956.5	914.9	562.4	500
K-factor	32	32	40	40
Min/Max rating change allowed	131.8	142.7	201.7	449.5
Highest rating	1473.9 2020-03-01	1414.9 2022-02-01	1204 2020-01-01	1200 2024-02-01
Highest raw rating	1456.5 2022-02-01	1414.9 2022-02-01	1062.4 2024-02-01	500 2024-02-01
Highest weighted rating	1456.5 2023-11-01	1414.9 2023-07-01	1062.4 2024-11-01	500 2024-11-01
Highest weighted performance	1473.9 2020-03-01	1387.1 2020-03-01	1204 2020-01-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-6.4	-5.8	0	0
New rating	1431.1	1368.9	1062.4	500
Analysis
Rating	1437.5	1374.7	1062.4	500
Raw rating	1361.2	1305.2	1062.4	500
Weighted rating	1437.5	1374.7	1062.4
Weighted performance	1022.6	961.1	503.3
K-factor	32	32	40	40
Floor	956.5	914.9	562.4	500
Max/Min rating change allowed	131.8	142.7	201.7	449.5
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	1361.2	1305.2	1062.4	500
New weighted rating	1431.1	1368.9	1062.4	500
New weighted performance	1040.9	979.2	495.2	0
Temp new rating	1431.1	1368.9	1062.4	500
Temp new rating +/-	-6.4	-5.8	0	0
Final new rating +/-	-6.4	-5.8	0	0
New rating	1431.1	1368.9	1062.4	500
New K-factor	32	32	40	40
New floor	956.5	914.9	562.4	500

Item	Main	Standard	Rapid
	0	0	0
	10	10	0
	0	0	0
	0	0	0
	12	8	4
	5	5	0
History	102	79	23

Games since
	Main 10	Standard 10		Rapid 0		Blitz 0
Gender	Male
Age group	U20
Region	Nkangala (MNW)
Province	Mpumalanga (MP)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 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	10	4	40	-85	1262.2	1177.2
Standard	10	4	40	-85	1262.2	1177.2
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	87	55.5	63.79	117.2	1179.3	1296.5
Standard	64	39.5	61.72	99.6	1188.8	1288.4
Rapid	23	16	69.57	166.3	1153	1319.3
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1361.2	1305.2	1062.4	500
2025-09-30	1444.1	1380.7	1062.4	500
2025-09-01	1444.1	1380.7	1062.4	500
2025-08-01	1444.1	1380.7	1062.4	500
2025-07-01	1444.1	1380.7	1062.4	500
2025-06-01	1444.1	1380.7	1062.4	500
2025-05-01	1444.1	1380.7	1062.4	500
2025-04-01	1444.1	1380.7	1062.4	500
2025-03-01	1444.1	1380.7	1062.4	500
2025-02-01	1444.1	1380.7	1062.4	500
2025-01-01	1444.1	1380.7	1062.4	500
2024-12-01	1444.1	1380.7	1062.4	500
2024-11-01	1444.1	1380.7	1062.4	500
2024-10-01	1444.1	1380.7	1062.4	500
2024-09-01	1444.1	1380.7	1062.4	500
2024-08-01	1444.1	1380.7	1062.4	500
2024-07-01	1444.1	1380.7	1062.4	500
2024-09-01	1444.1	1380.7	1062.4	500
2024-05-01	1444.1	1380.7	1062.4	500
2024-04-01	1444.1	1380.7	1062.4	500
2024-03-01	1444.1	1380.7	1062.4	500
2024-02-01	1444.1	1380.7	1062.4	500
2024-01-01	1444.1	1380.7	1062.4	500
2023-12-01	1444.1	1380.7	1062.4	500

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	Nkangala Selections 2025 (U20+Open)	2025-09-27	2025-09-27	Standard	Nkangala (MNW)	5	5	3	Yes	Analysis
2	Nkangala Selections 2025 (U16+U18)	2025-09-27	2025-09-27	Standard	Nkangala (MNW)	5	5	1	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Nkangala Selections 2025 (U20+Open)	2025-09-27	2025-09-27	Standard	Nkangala (MNW)	5	5	3	Yes	Analysis
2	Nkangala Selections 2025 (U16+U18)	2025-09-27	2025-09-27	Standard	Nkangala (MNW)	5	5	1	Yes	Analysis
3	Mpumalanga Finaal 2022 (O15)	2022-08-22	2022-08-22	Rapid	Gert Sibande (MGS)	5	4	4	Yes	Analysis
4	Alberton Chess Club Open 2022 (B)	2022-07-16	2022-07-16	Standard	Ekurhuleni (GE)	5	3	0.5	Yes	Analysis
5	Ekurhuleni Chess Open 2022 (C)	2022-01-08	2022-01-08	Standard	Ekurhuleni (GE)	5	5	5	Yes	Analysis
6	Ekurhuleni Chess Chessa Open 2021 (B)	2021-03-27	2021-03-27	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
7	Nkangala 3rd Tournament HTS Witbank 2020 (C)	2020-03-07	2020-03-07	Standard	Nkangala (MNW)	5	5	5	Yes	Analysis
8	Nkangala 2nd Tournament St Thomas Aquinas School 2020 (C)	2020-02-08	2020-02-08	Standard	Nkangala (MNW)	5	5	4	Yes	Analysis
9	Nkangala 1st Toutrnament Laerskool CR Swart 2020 (C)	2020-01-25	2020-01-25	Rapid	Nkangala (MNW)	5	5	4	Yes	Analysis
10	2019 Wild Card Chess Championship (U14 Open)	2020-01-09	2020-01-12	Standard	4 Knights (4K)	7	7	3	Yes	Analysis
11	2019 South African Junior Team Championships (U14E)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	5.5	Yes	Analysis
12	Nkangala 3rd Tournament St Thomas Aquinas School - Witbank 2019 (E)	2019-04-13	2019-04-13	Rapid	Nkangala (MNW)	5	5	3	Yes	Analysis
13	Nkangala 1st Tournamant Laerskool President CR Swart 2019 (D)	2019-02-02	2019-02-02	Rapid	Nkangala (MNW)	5	5	3	Yes	Analysis
14	South African Junior Team Championships 2018 (U12C)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	5	Yes	Analysis
15	Nkangala 5th Tournament Laerskool Panorama - Witbank 2018 (E-G)	2018-07-28	2018-07-28	Standard	Nkangala (MNW)	5	5	4	Yes	Analysis
16	Curro Age Open 2018 (U12 Open)	2018-05-12	2018-05-12	Standard	Ehlanzeni (MEN)	5	5	1.5	Yes	Analysis
17	3rd Nkangala Tournament Curro School 2018 (E)	2018-03-24	2018-03-24	Rapid	Nkangala (MNW)	5	4	2	Yes	Analysis

#	Games	Start				End
1	6	Tournament Ekurhuleni Chess Open 2022				Tournament Alberton Chess Club Open 2022
		date 2022-01-08	rnd 1	type Standard	result 1	date 2022-07-16	rnd 1	type Standard	result 0.5
		Opponent Groenewald, R (Ruan)				Opponent Johnson, C (Caleb)
2	6	Tournament 2019 South African Junior Team Championships				Tournament 2019 South African Junior Team Championships
		date 2020-01-04	rnd 1	type Standard	result 1	date 2020-01-07	rnd 6	type Standard	result 1
		Opponent Nel, V (Vincent)				Opponent Fernandes, A (Aleandro)
3	5	Tournament Mpumalanga Finaal 2022				Tournament Nkangala Selections 2025
		date 2022-08-22	rnd 1	type Rapid	result 1	date 2025-09-27	rnd 1	type Standard	result 1
		Opponent Arendt, W (Wernbes)				Opponent Mahlangu, S (Samukelisiwe)

#	Games	Start				End
1	6	Tournament Ekurhuleni Chess Open 2022				Tournament Alberton Chess Club Open 2022
		date 2022-01-08	rnd 1	type Standard	result 1	date 2022-07-16	rnd 1	type Standard	result 0.5
		Opponent Groenewald, R (Ruan)				Opponent Johnson, C (Caleb)
2	6	Tournament 2019 South African Junior Team Championships				Tournament 2019 South African Junior Team Championships
		date 2020-01-04	rnd 1	type Standard	result 1	date 2020-01-07	rnd 6	type Standard	result 1
		Opponent Nel, V (Vincent)				Opponent Fernandes, A (Aleandro)
3	5	Tournament Nkangala 3rd Tournament HTS Witbank 2020				Tournament Nkangala 3rd Tournament HTS Witbank 2020
		date 2020-03-07	rnd 1	type Standard	result 1	date 2020-03-07	rnd 5	type Standard	result 1
		Opponent Tshabalala, M (Musa)				Opponent Mametja, O (Oarabile)

#	Games	Start				End
1	5	Tournament Nkangala 1st Toutrnament Laerskool CR Swart 2020				Tournament Mpumalanga Finaal 2022
		date 2020-01-25	rnd 5	type Rapid	result 1	date 2022-08-22	rnd 5	type Rapid	result 1
		Opponent Phepeng, T (Tshegofatso)				Opponent Zwane, K (Khayelihle)
2	3	Tournament Nkangala 1st Toutrnament Laerskool CR Swart 2020				Tournament Nkangala 1st Toutrnament Laerskool CR Swart 2020
		date 2020-01-25	rnd 1	type Rapid	result 1	date 2020-01-25	rnd 3	type Rapid	result 1
		Opponent Engelbrecht, G (Gawie)				Opponent Mgidi, T (Thandolwethu)
3	2	Tournament Nkangala 3rd Tournament St Thomas Aquinas School - Witbank 2019				Tournament Nkangala 3rd Tournament St Thomas Aquinas School - Witbank 2019
		date 2019-04-13	rnd 1	type Rapid	result 1	date 2019-04-13	rnd 2	type Rapid	result 1
		Opponent Roestorf, M (Monique)				Opponent Senamela, N (Nomnotho)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Ekurhuleni Chess Open 2022				Tournament Ekurhuleni Chess Open 2022
		date 2022-01-08	rnd 1	type Standard	result 1	date 2022-01-08	rnd 5	type Standard	result 1
		Opponent Groenewald, R (Ruan)				Opponent Rossouw, A (Alicia)
2	5	Tournament Nkangala 3rd Tournament HTS Witbank 2020				Tournament Nkangala 3rd Tournament HTS Witbank 2020
		date 2020-03-07	rnd 1	type Standard	result 1	date 2020-03-07	rnd 5	type Standard	result 1
		Opponent Tshabalala, M (Musa)				Opponent Mametja, O (Oarabile)
3	5	Tournament Nkangala 1st Toutrnament Laerskool CR Swart 2020				Tournament Nkangala 2nd Tournament St Thomas Aquinas School 2020
		date 2020-01-25	rnd 5	type Rapid	result 1	date 2020-02-08	rnd 4	type Standard	result 1
		Opponent Phepeng, T (Tshegofatso)				Opponent Mgidi, T (Thandolwethu)

#	Games	Start				End
1	5	Tournament Ekurhuleni Chess Open 2022				Tournament Ekurhuleni Chess Open 2022
		date 2022-01-08	rnd 1	type Standard	result 1	date 2022-01-08	rnd 5	type Standard	result 1
		Opponent Groenewald, R (Ruan)				Opponent Rossouw, A (Alicia)
2	5	Tournament Nkangala 3rd Tournament HTS Witbank 2020				Tournament Nkangala 3rd Tournament HTS Witbank 2020
		date 2020-03-07	rnd 1	type Standard	result 1	date 2020-03-07	rnd 5	type Standard	result 1
		Opponent Tshabalala, M (Musa)				Opponent Mametja, O (Oarabile)
3	5	Tournament 2019 Wild Card Chess Championship				Tournament Nkangala 2nd Tournament St Thomas Aquinas School 2020
		date 2020-01-12	rnd 7	type Standard	result 1	date 2020-02-08	rnd 4	type Standard	result 1
		Opponent Attwell, R (Rowan)				Opponent Mgidi, T (Thandolwethu)

#	Games	Start				End
1	5	Tournament Nkangala 1st Toutrnament Laerskool CR Swart 2020				Tournament Mpumalanga Finaal 2022
		date 2020-01-25	rnd 5	type Rapid	result 1	date 2022-08-22	rnd 5	type Rapid	result 1
		Opponent Phepeng, T (Tshegofatso)				Opponent Zwane, K (Khayelihle)
2	3	Tournament Nkangala 1st Toutrnament Laerskool CR Swart 2020				Tournament Nkangala 1st Toutrnament Laerskool CR Swart 2020
		date 2020-01-25	rnd 1	type Rapid	result 1	date 2020-01-25	rnd 3	type Rapid	result 1
		Opponent Engelbrecht, G (Gawie)				Opponent Mgidi, T (Thandolwethu)
3	2	Tournament Nkangala 3rd Tournament St Thomas Aquinas School - Witbank 2019				Tournament Nkangala 3rd Tournament St Thomas Aquinas School - Witbank 2019
		date 2019-04-13	rnd 1	type Rapid	result 1	date 2019-04-13	rnd 2	type Rapid	result 1
		Opponent Roestorf, M (Monique)				Opponent Senamela, N (Nomnotho)

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	Mametja ,O (Oarabile)	3	1	-141.7	2	1	0	1	0	-425	0	0	0
1	Mametja ,O (Oarabile)	3	1082.9	941.2	2	1033.1	1082.9	1	987.8	657.9	0	0	0
2	Mapota ,O (Oreagile)	3	1	-141.7	2	1	0	1	0	-425	0	0	0
2	Mapota ,O (Oreagile)	3	1346.2	1204.5	2	1320.1	1346.2	1	1235.2	921.2	0	0	0
3	Mgidi ,T (Thandolwethu)	2	2	425	1	1	425	1	1	425	0	0	0
3	Mgidi ,T (Thandolwethu)	2	1327.2	1752.2	1	1272.1	1752.2	1	1070.6	1752.2	0	0	0
4	Phepeng ,T (Tshegofatso)	2	2	425	1	1	425	1	1	425	0	0	0
4	Phepeng ,T (Tshegofatso)	2	1293.2	1718.2	1	1299.6	1718.2	1	1214	1718.2	0	0	0
5	Nkosi ,S (Siphesihle)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Nkosi ,S (Siphesihle)	1	1052.5	627.5	1	1042.6	627.5	0	0	0	0	0	0
6	Mahlangu ,S (Samukelisiwe)	1	1	425	1	1	425	0	0	0	0	0	0
6	Mahlangu ,S (Samukelisiwe)	1	1218.9	1643.9	1	1222.5	1643.9	0	0	0	0	0	0
7	Pietersen ,K (Katelin)	1	1	425	1	1	425	0	0	0	0	0	0
7	Pietersen ,K (Katelin)	1	1222.2	1647.2	1	1072.8	1647.2	0	0	0	0	0	0
8	Manana ,S (Sibusiso)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Manana ,S (Sibusiso)	1	1199.5	774.5	1	1199.5	774.5	0	0	0	0	0	0
9	Mahomed ,N (Na`eem)	1	1	425	1	1	425	0	0	0	0	0	0
9	Mahomed ,N (Na`eem)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Vorster ,M (Meghan)	1	1	425	1	1	425	0	0	0	0	0	0
10	Vorster ,M (Meghan)	1	1236.5	1661.5	1	1227.5	1661.5	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Nkosi, S (Siphesihle)

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