Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jona, S (Samkelisiwe)

Chess SA id

2110158728

FIDE id

Date of birth

2011-11-11 (U16)

Gender

Female

Region

Gert Sibande (MGS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-08-16

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1268.8	1200	1317.3	1200
Raw rating	1268.8	1200	1317.3	1200
Weighted rating	1257.9	1200	1299.6	1200
Weighted performance	1041	0	1096.4	0
Floor	768.8	700	817.3	700
K-factor	36	36	36	36
Min/Max rating change allowed	150.3	165.8	140.3	165.8
Highest rating	1268.8 2024-09-01	1200 2018-10-01	1317.3 2024-09-01	1200 2018-10-01
Highest raw rating	1268.8 2024-09-01	1200 2024-02-01	1317.3 2024-09-01	1200 2024-02-01
Highest weighted rating	1250 2025-08-01	1200 2018-10-01	1286.7 2025-08-01	1200 2018-10-01
Highest weighted performance	1243.8 2024-08-01	1200 2024-02-01	1310.1 2024-08-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1268.8	1200	1317.3	1200
Analysis
Rating	1268.8	1200	1317.3	1200
Raw rating	1268.8	1200	1317.3	1200
Weighted rating	1257.9	1200	1299.6
Weighted performance	1041	0	1096.4
K-factor	36	36	36	36
Floor	768.8	700	817.3	700
Max/Min rating change allowed	150.3	165.8	140.3	165.8
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	1268.8	1200	1317.3	1200
New weighted rating	1260.1	1200	1303.2	1200
New weighted performance	1033.5	0	1088.5	0
Temp new rating	1268.8	1200	1317.3	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1268.8	1200	1317.3	1200
New K-factor	36	36	36	36
New floor	768.8	700	817.3	700

Item	Main	Rapid
	0	0
	0	0
	10	10
	13	13
	0	0
	0	0
History	23	23

Games since
	Main 10	Standard 0		Rapid 10		Blitz 0
Gender	Female
Age group	U16
Region	Gert Sibande (MGS)
Province	Mpumalanga (MP)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-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	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
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	23	14.5	63.04	110.9	1203.8	1314.7
Standard	0	0	0	0	0	0
Rapid	23	14.5	63.04	110.9	1203.8	1314.7
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1268.8	1200	1317.3	1200
2025-09-30	1268.8	1200	1317.3	1200
2025-09-01	1268.8	1200	1317.3	1200
2025-08-01	1268.8	1200	1317.3	1200
2025-07-01	1268.8	1200	1317.3	1200
2025-06-01	1268.8	1200	1317.3	1200
2025-05-01	1268.8	1200	1317.3	1200
2025-04-01	1268.8	1200	1317.3	1200
2025-03-01	1268.8	1200	1317.3	1200
2025-02-01	1268.8	1200	1317.3	1200
2025-01-01	1268.8	1200	1317.3	1200
2024-12-01	1268.8	1200	1317.3	1200
2024-11-01	1268.8	1200	1317.3	1200
2024-10-01	1268.8	1200	1317.3	1200
2024-09-01	1268.8	1200	1317.3	1200
2024-08-01	1196.4	1200	1199.6	1200
2024-07-01	1196.4	1200	1199.6	1200
2024-09-01	1196.4	1200	1199.6	1200
2024-05-01	1196.4	1200	1199.6	1200
2024-04-01	1196.4	1200	1199.6	1200
2024-03-01	1196.4	1200	1199.6	1200
2024-02-01	1196.4	1200	1199.6	1200
2024-01-01	1196.4	1200	1199.6	1200
2023-12-01	1196.4	1200	1199.6	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	Top Schools Gert Sibande 2024 (Girls)	2024-08-16	2024-08-16	Rapid	Gert Sibande (MGS)	5	5	3.5	Yes	Analysis
2	Govan Mbeki 2024 (Girls)	2024-08-02	2024-08-02	Rapid	Gert Sibande (MGS)	5	5	5	Yes	Analysis
3	Govin Mbeki Teams Chess Tournament 2023 (U13 Girls)	2023-08-18	2023-08-18	Rapid	Gert Sibande (MGS)	5	4	2	Yes	Analysis
4	2023 Gert Sibande League (Girls)	2023-08-25	2023-08-25	Rapid	Gert Sibande (MGS)	5	4	2	Yes	Analysis
5	Ho�veldgroep 2023 (Dogters)	2023-07-28	2023-07-28	Rapid	Gert Sibande (MGS)	5	5	2	Yes	Analysis

#	Games	Start				End
1	6	Tournament 2023 Gert Sibande League				Tournament Govan Mbeki 2024
		date 2023-08-25	rnd 5	type Rapid	result 1	date 2024-08-02	rnd 5	type Rapid	result 1
		Opponent Kajeni, U (Uyanda)				Opponent Koen, C (Cara)
2	4	Tournament Top Schools Gert Sibande 2024				Tournament Top Schools Gert Sibande 2024
		date 2024-08-16	rnd 2	type Rapid	result 0.5	date 2024-08-16	rnd 5	type Rapid	result 1
		Opponent Cindi, A (Azande)				Opponent Koen, C (Cara)
3	2	Tournament Ho�veldgroep 2023				Tournament Ho�veldgroep 2023
		date 2023-07-28	rnd 2	type Rapid	result 1	date 2023-07-28	rnd 3	type Rapid	result 1
		Opponent Beukes, B (Beulah)				Opponent Grobler, R (Ruzelle)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament 2023 Gert Sibande League				Tournament Govan Mbeki 2024
		date 2023-08-25	rnd 5	type Rapid	result 1	date 2024-08-02	rnd 5	type Rapid	result 1
		Opponent Kajeni, U (Uyanda)				Opponent Koen, C (Cara)
2	4	Tournament Top Schools Gert Sibande 2024				Tournament Top Schools Gert Sibande 2024
		date 2024-08-16	rnd 2	type Rapid	result 0.5	date 2024-08-16	rnd 5	type Rapid	result 1
		Opponent Cindi, A (Azande)				Opponent Koen, C (Cara)
3	2	Tournament Ho�veldgroep 2023				Tournament Ho�veldgroep 2023
		date 2023-07-28	rnd 2	type Rapid	result 1	date 2023-07-28	rnd 3	type Rapid	result 1
		Opponent Beukes, B (Beulah)				Opponent Grobler, R (Ruzelle)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament 2023 Gert Sibande League				Tournament Govan Mbeki 2024
		date 2023-08-25	rnd 5	type Rapid	result 1	date 2024-08-02	rnd 5	type Rapid	result 1
		Opponent Kajeni, U (Uyanda)				Opponent Koen, C (Cara)
2	3	Tournament Top Schools Gert Sibande 2024				Tournament Top Schools Gert Sibande 2024
		date 2024-08-16	rnd 3	type Rapid	result 1	date 2024-08-16	rnd 5	type Rapid	result 1
		Opponent Khiba, O (Oratile)				Opponent Koen, C (Cara)
3	2	Tournament Ho�veldgroep 2023				Tournament Ho�veldgroep 2023
		date 2023-07-28	rnd 2	type Rapid	result 1	date 2023-07-28	rnd 3	type Rapid	result 1
		Opponent Beukes, B (Beulah)				Opponent Grobler, R (Ruzelle)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament 2023 Gert Sibande League				Tournament Govan Mbeki 2024
		date 2023-08-25	rnd 5	type Rapid	result 1	date 2024-08-02	rnd 5	type Rapid	result 1
		Opponent Kajeni, U (Uyanda)				Opponent Koen, C (Cara)
2	3	Tournament Top Schools Gert Sibande 2024				Tournament Top Schools Gert Sibande 2024
		date 2024-08-16	rnd 3	type Rapid	result 1	date 2024-08-16	rnd 5	type Rapid	result 1
		Opponent Khiba, O (Oratile)				Opponent Koen, C (Cara)
3	2	Tournament Ho�veldgroep 2023				Tournament Ho�veldgroep 2023
		date 2023-07-28	rnd 2	type Rapid	result 1	date 2023-07-28	rnd 3	type Rapid	result 1
		Opponent Beukes, B (Beulah)				Opponent Grobler, R (Ruzelle)

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	Tshekoeng ,R (Rorisang)	3	0	-425	0	0	0	3	0	-425	0	0	0
1	Tshekoeng ,R (Rorisang)	3	1232	807	0	0	0	3	1258.7	807	0	0	0
2	De Beer ,C (Caitlin)	2	1	0	0	0	0	2	1	0	0	0	0
2	De Beer ,C (Caitlin)	2	1254.7	1254.7	0	0	0	2	1287.9	1254.7	0	0	0
3	Mendze ,M (Minenhle)	2	0	-425	0	0	0	2	0	-425	0	0	0
3	Mendze ,M (Minenhle)	2	1177.3	752.3	0	0	0	2	1161.8	752.3	0	0	0
4	Koen ,C (Cara)	2	2	425	0	0	0	2	2	425	0	0	0
4	Koen ,C (Cara)	2	1200	1625	0	0	0	2	1200	1625	0	0	0
5	Pillay ,A (Alexa)	1	1	425	0	0	0	1	1	425	0	0	0
5	Pillay ,A (Alexa)	1	1149.4	1574.4	0	0	0	1	1124.8	1574.4	0	0	0
6	Kudiwa ,C (Chloe)	1	1	425	0	0	0	1	1	425	0	0	0
6	Kudiwa ,C (Chloe)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
7	Magombeyi ,A (Ashley)	1	0	-425	0	0	0	1	0	-425	0	0	0
7	Magombeyi ,A (Ashley)	1	1256.7	831.7	0	0	0	1	1300.5	831.7	0	0	0
8	Khanyile ,A (Andiswa)	1	0	-425	0	0	0	1	0	-425	0	0	0
8	Khanyile ,A (Andiswa)	1	1200	775	0	0	0	1	1200	775	0	0	0
9	Grobler ,R (Ruzelle)	1	1	425	0	0	0	1	1	425	0	0	0
9	Grobler ,R (Ruzelle)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
10	Kleyn ,L (Layla)	1	1	425	0	0	0	1	1	425	0	0	0
10	Kleyn ,L (Layla)	1	1159.9	1584.9	0	0	0	1	1143.8	1584.9	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Jona, S (Samkelisiwe)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms