Chess South Africa Ratings Database

PLAYER PAGE

Personal

Grobbelaar, N (Nina)

Chess SA id

2190314138

FIDE id

Date of birth

2019-03-13 (U8)

Gender

Female

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-12-20

Personal details last changed

2025-03-25

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1388.8	1387.6	1200	1200
Raw rating	1379.2	1383.2	1200	1200
Weighted rating	1241.5	1240.3	1200	1200
Weighted performance	1388.8	1387.6	0	0
Floor	879.2	883.2	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	128.5	127.7	165.8	165.8
Highest rating	1388.8 2026-01-01	1387.6 2026-01-01	1200 2025-02-01	1200 2025-02-01
Highest raw rating	1379.2 2026-01-01	1383.2 2026-01-01	1200 2025-02-01	1200 2025-02-01
Highest weighted rating	1241.5 2026-01-01	1240.3 2026-01-01	1200 2025-02-01	1200 2025-02-01
Highest weighted performance	1388.8 2026-01-01	1387.6 2026-01-01	0 1900-01-01	0 1900-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-9.1	-4.4	0	0
New rating	1379.7	1383.2	1200	1200
Analysis
Rating	1388.8	1387.6	1200	1200
Raw rating	1379.2	1383.2	1200	1200
Weighted rating	1241.5	1240.3	1200
Weighted performance	1388.8	1387.6	0
K-factor	36	36	36	36
Floor	879.2	883.2	700	700
Max/Min rating change allowed	128.5	127.7	165.8	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	1379.2	1383.2	1200	1200
New weighted rating	1253.9	1253	1200	1200
New weighted performance	1379.7	1378.4	0	0
Temp new rating	1379.7	1383.2	1200	1200
Temp new rating +/-	-9.1	-4.4	0	0
Final new rating +/-	-9.1	-4.4	0	0
New rating	1379.7	1383.2	1200	1200
New K-factor	36	36	36	36
New floor	879.2	883.2	700	700

Item	Main	Standard
	0	0
	54	54
	0	0
	0	0
	0	0
	0	0
History	54	54

Games since
	Main 54	Standard 54		Rapid 0		Blitz 0
Gender	Female
Age group	U8
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	3682		1206		423
Female	809		265		97
U8	60		14		2
U8 Female	22		5		2
Standard
	RSA		Province		Region
Overall	3630		1299		493
Female	799		278		112
U8	60		16		4
U8 Female	21		6		3
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U8	-1		-1		-1
U8 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U8	-1		-1		-1
U8 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	54	25.5	47.22	-23.6	1252.2	1228.6
Standard	54	25.5	47.22	-23.6	1252.2	1228.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	54	25.5	47.22	-23.6	1252.2	1228.6
Standard	54	25.5	47.22	-23.6	1252.2	1228.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1379.2	1383.2	1200	1200
2025-11-30	1257.4	1251.4	1200	1200
2025-11-01	1257.4	1251.4	1200	1200
2025-09-30	1257.4	1251.4	1200	1200
2025-09-01	1275.6	1271.2	1200	1200
2025-08-01	1299.4	1295.6	1200	1200
2025-07-01	1224.4	1228.9	1200	1200
2025-06-01	1201.9	1201.8	1200	1200
2025-05-01	1216.6	1217.4	1200	1200
2025-04-01	1216.6	1217.4	1200	1200
2025-03-01	1199.5	1199.3	1200	1200
2025-02-01	1198.5	1198.1	1200	1200
2025-01-01	1200	1200	1200	1200
2024-12-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-10-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-06-01	1200	1200	1200	1200
2024-05-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	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	2025 Mzansi Individual Championships (U8 Girls)	2025-12-17	2025-12-20	Standard	Nelson Mandela Bay (ENM)	6	6	6	Yes	Analysis
2	2025 Mzansi Inter Provincial Team Championships (U8 Girls)	2025-12-15	2025-12-17	Standard	Nelson Mandela Bay (ENM)	6	6	5	Yes	Analysis
3	Gauteng Inter-Region at Emerald Resort 2025 (U8+U10 Girls)	2025-12-06	2025-12-07	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
4	2025 Centurion Chess Open Tournament (U8)	2025-09-27	2025-09-27	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
5	2025 Etienne Lewis Closed Chess Tournament (U8)	2025-08-09	2025-08-09	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
6	2025 Wynie Robbertse Chess Tournament (U8)	2025-07-19	2025-07-19	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
7	South African Open 2025 (U8 Girls)	2025-07-03	2025-07-05	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
8	Third Knight Riders Junior Open 2025 (U8)	2025-06-22	2025-06-22	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
9	2025 Silver Lakes Chess Club Open Chess Tournament (U8)	2025-05-03	2025-05-03	Standard	Tshwane (GTP)	5	4	1	Yes	Analysis
10	Lubowski Open 2025 (E+F)	2025-03-21	2025-03-21	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
11	2025 Chris Greyling Open Chess Tournament (U8)	2025-03-15	2025-03-15	Standard	Tshwane (GTP)	5	4	1	Yes	Analysis
12	AHS Open Chess Tournament 2025 (U8)	2025-03-01	2025-03-01	Standard	Tshwane (GTP)	5	4	2	Yes	Analysis
13	Constantiapark Open 2025 (U8)	2025-02-15	2025-02-15	Standard	Tshwane (GTP)	5	4	2	Yes	Analysis
14	2025 Blou Bul Open Chess Tournament (F)	2025-02-08	2025-02-08	Standard	Tshwane (GTP)	5	4	1.5	Yes	Analysis
15	2025 Tshwane Chess OPEN Registration Tournament (U8)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	4	1.5	Yes	Analysis

#	Games	Start				End
1	5	Tournament South African Open 2025				Tournament 2025 Wynie Robbertse Chess Tournament
		date 2025-07-04	rnd 4	type Standard	result 1	date 2025-07-19	rnd 3	type Standard	result 1
		Opponent Zingeni, R (Rethabile)				Opponent Sekgobela, A (Adil)
2	4	Tournament Third Knight Riders Junior Open 2025				Tournament South African Open 2025
		date 2025-06-22	rnd 4	type Standard	result 1	date 2025-07-03	rnd 2	type Standard	result 1
		Opponent Ncube, A (Amaris)				Opponent Liebenberg, A (Arabella)
3	2	Tournament Lubowski Open 2025				Tournament Lubowski Open 2025
		date 2025-03-21	rnd 2	type Standard	result 1	date 2025-03-21	rnd 3	type Standard	result 1
		Opponent Viljoen, L (Lenicke)				Opponent Van Der Merwe, H (Hunter)

#	Games	Start				End
1	5	Tournament South African Open 2025				Tournament 2025 Wynie Robbertse Chess Tournament
		date 2025-07-04	rnd 4	type Standard	result 1	date 2025-07-19	rnd 3	type Standard	result 1
		Opponent Zingeni, R (Rethabile)				Opponent Sekgobela, A (Adil)
2	4	Tournament Third Knight Riders Junior Open 2025				Tournament South African Open 2025
		date 2025-06-22	rnd 4	type Standard	result 1	date 2025-07-03	rnd 2	type Standard	result 1
		Opponent Ncube, A (Amaris)				Opponent Liebenberg, A (Arabella)
3	2	Tournament Lubowski Open 2025				Tournament Lubowski Open 2025
		date 2025-03-21	rnd 2	type Standard	result 1	date 2025-03-21	rnd 3	type Standard	result 1
		Opponent Viljoen, L (Lenicke)				Opponent Van Der Merwe, H (Hunter)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Third Knight Riders Junior Open 2025				Tournament South African Open 2025
		date 2025-06-22	rnd 4	type Standard	result 1	date 2025-07-03	rnd 2	type Standard	result 1
		Opponent Ncube, A (Amaris)				Opponent Liebenberg, A (Arabella)
2	2	Tournament 2025 Wynie Robbertse Chess Tournament				Tournament 2025 Wynie Robbertse Chess Tournament
		date 2025-07-19	rnd 2	type Standard	result 1	date 2025-07-19	rnd 3	type Standard	result 1
		Opponent Conradie, L (Lily)				Opponent Sekgobela, A (Adil)
3	2	Tournament South African Open 2025				Tournament South African Open 2025
		date 2025-07-04	rnd 4	type Standard	result 1	date 2025-07-05	rnd 5	type Standard	result 1
		Opponent Zingeni, R (Rethabile)				Opponent Maduna, A (Asonele)

#	Games	Start				End
1	4	Tournament Third Knight Riders Junior Open 2025				Tournament South African Open 2025
		date 2025-06-22	rnd 4	type Standard	result 1	date 2025-07-03	rnd 2	type Standard	result 1
		Opponent Ncube, A (Amaris)				Opponent Liebenberg, A (Arabella)
2	2	Tournament 2025 Wynie Robbertse Chess Tournament				Tournament 2025 Wynie Robbertse Chess Tournament
		date 2025-07-19	rnd 2	type Standard	result 1	date 2025-07-19	rnd 3	type Standard	result 1
		Opponent Conradie, L (Lily)				Opponent Sekgobela, A (Adil)
3	2	Tournament South African Open 2025				Tournament South African Open 2025
		date 2025-07-04	rnd 4	type Standard	result 1	date 2025-07-05	rnd 5	type Standard	result 1
		Opponent Zingeni, R (Rethabile)				Opponent Maduna, A (Asonele)

No games found.

#	Games	Start				End

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	Mendonca ,M (Mark)	4	0	-425	4	0	-425	0	0	0	0	0	0
1	Mendonca ,M (Mark)	4	1409.8	984.8	4	1402.7	984.8	0	0	0	0	0	0
2	Conradie ,L (Lily)	4	3	212.5	4	3	212.5	0	0	0	0	0	0
2	Conradie ,L (Lily)	4	1195.3	1407.8	4	1194.9	1407.8	0	0	0	0	0	0
3	Fourie ,D (Dani�l)	3	0	-425	3	0	-425	0	0	0	0	0	0
3	Fourie ,D (Dani�l)	3	1366	941	3	1371.9	941	0	0	0	0	0	0
4	Klopper ,L (Liam)	3	0.5	-283.3	3	0.5	-283.3	0	0	0	0	0	0
4	Klopper ,L (Liam)	3	1323	1039.6	3	1318.1	1039.6	0	0	0	0	0	0
5	Van Eeden ,C (Cilliers)	3	0	-425	3	0	-425	0	0	0	0	0	0
5	Van Eeden ,C (Cilliers)	3	1317.1	892.1	3	1316.2	892.1	0	0	0	0	0	0
6	Van Zyl ,L (Liane)	3	0	-425	3	0	-425	0	0	0	0	0	0
6	Van Zyl ,L (Liane)	3	1284.2	859.2	3	1285.6	859.2	0	0	0	0	0	0
7	Viljoen ,L (Lenicke)	2	2	425	2	2	425	0	0	0	0	0	0
7	Viljoen ,L (Lenicke)	2	1125.1	1550.1	2	1119	1550.1	0	0	0	0	0	0
8	Kaboyaone ,KV (Kael Vanya)	2	0	-425	2	0	-425	0	0	0	0	0	0
8	Kaboyaone ,KV (Kael Vanya)	2	1237.4	812.4	2	1243.6	812.4	0	0	0	0	0	0
9	Davison ,G (Georgia)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
9	Davison ,G (Georgia)	2	1198.8	986.2	2	1198.4	986.2	0	0	0	0	0	0
10	Liebenberg ,A (Arabella)	2	2	425	2	2	425	0	0	0	0	0	0
10	Liebenberg ,A (Arabella)	2	1208.7	1633.7	2	1211.2	1633.7	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Grobbelaar, N (Nina)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms