Chess South Africa Ratings Database

PLAYER PAGE

Personal

Crone, J (Judah)

Chess SA id

1120111448

FIDE id

Date of birth

2012-10-22 (U14)

Gender

Male

Region

Nelson Mandela Bay (ENM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-10-12

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1288.1	1297.1	1231.9	1200
Raw rating	1288.1	1297.1	1231.9	1200
Weighted rating	1288	1297.1	1230.9	1200
Weighted performance	825.5	668.1	0	0
Floor	788.5	797.1	737.6	700
K-factor	36	36	36	36
Min/Max rating change allowed	146.3	144.4	158.5	165.8
Highest rating	1341.8 2019-04-01	1341.8 2019-05-01	1346.9 2019-11-01	1200 2018-10-01
Highest raw rating	1288.5 2024-02-01	1297.1 2024-02-01	1237.6 2024-02-01	1200 2024-02-01
Highest weighted rating	1288.5 2024-04-01	1297.1 2024-04-01	1237.6 2024-02-01	1200 2018-10-01
Highest weighted performance	1341.8 2019-04-01	1341.8 2019-05-01	1346.9 2019-11-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1288.1	1297.1	1231.9	1200
Analysis
Rating	1288.1	1297.1	1231.9	1200
Raw rating	1288.1	1297.1	1231.9	1200
Weighted rating	1288	1297.1	1230.9
Weighted performance	825.5	668.1	0
K-factor	36	36	36	36
Floor	788.5	797.1	737.6	700
Max/Min rating change allowed	146.3	144.4	158.5	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	1288.1	1297.1	1231.9	1200
New weighted rating	1288	1297.1	1230.9	1200
New weighted performance	817.9	660.4	0	0
Temp new rating	1288.1	1297.1	1231.9	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1288.1	1297.1	1231.9	1200
New K-factor	36	36	36	36
New floor	788.5	797.1	737.6	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	5	0	5
	0	0	0
	15	15	0
	0	0	0
History	83	72	11

Games since
	Main 5	Standard 0		Rapid 5		Blitz 0
Gender	Male
Age group	U14
Region	Nelson Mandela Bay (ENM)
Province	Eastern Cape (EC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 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	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	83	47	56.63	56.3	1218.8	1275.1
Standard	72	41	56.94	59	1212.3	1271.4
Rapid	11	6	54.55	38.6	1261.1	1299.7
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1288.1	1297.1	1231.9	1200
2025-09-30	1288.1	1297.1	1231.9	1200
2025-09-01	1288.1	1297.1	1231.9	1200
2025-08-01	1288.1	1297.1	1231.9	1200
2025-07-01	1288.1	1297.1	1231.9	1200
2025-06-01	1288.1	1297.1	1231.9	1200
2025-05-01	1288.1	1297.1	1231.9	1200
2025-04-01	1288.1	1297.1	1231.9	1200
2025-03-01	1288.1	1297.1	1231.9	1200
2025-02-01	1288	1297.1	1230.9	1200
2025-01-01	1286.9	1297.1	1215.3	1200
2024-12-01	1286.9	1297.1	1215.3	1200
2024-11-01	1286.9	1297.1	1215.3	1200
2024-10-01	1288.5	1297.1	1237.6	1200
2024-09-01	1288.5	1297.1	1237.6	1200
2024-08-01	1288.5	1297.1	1237.6	1200
2024-07-01	1288.5	1297.1	1237.6	1200
2024-09-01	1288.5	1297.1	1237.6	1200
2024-05-01	1288.5	1297.1	1237.6	1200
2024-04-01	1288.5	1297.1	1237.6	1200
2024-03-01	1288.5	1297.1	1237.6	1200
2024-02-01	1288.5	1297.1	1237.6	1200
2024-01-01	1288.5	1297.1	1237.6	1200
2023-12-01	1288.5	1297.1	1237.6	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	NMBCU Top Schools 2024 (Senior Primary)	2024-10-12	2024-10-12	Rapid	Nelson Mandela Bay (ENM)	5	5	2	Yes	Analysis
2	2022 NMB Junior Trials 1 (U10)	2022-04-22	2022-04-23	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
3	Pearson Chess Festival 2022 (B)	2022-02-25	2022-02-26	Standard	Nelson Mandela Bay (ENM)	5	5	4	Yes	Analysis
4	2022 Nelson Mandela Bay Open (B)	2022-02-04	2022-02-06	Standard	Nelson Mandela Bay (ENM)	5	4	2	Yes	Analysis
5	2020 NMBCU Chess Trials 2 2020 (U10)	2020-03-07	2020-03-07	Standard	Nelson Mandela Bay (ENM)	5	5	2.5	Yes	Analysis
6	2020 Boardwalk Pearson Open Chess Festival (Open)	2020-03-14	2020-03-15	Standard	Nelson Mandela Bay (ENM)	5	4	1	Yes	Analysis
7	Brandwag Open 2020 (B)	2020-01-31	2020-02-01	Standard	Nelson Mandela Bay (ENM)	5	5	2	Yes	Analysis
8	2020 NMBCU Chess Trial 1 (U10)	2020-02-08	2020-02-09	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
9	2019 Wild Card Chess Championship (U8 Open+Girls)	2020-01-09	2020-01-12	Standard	4 Knights (4K)	7	7	3.5	Yes	Analysis
10	2019 South African Junior Team Championships (U8A)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	4	Yes	Analysis
11	Ulitmate Chess Open 2019 (Rapid C)	2019-11-30	2019-11-30	Rapid	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
12	NMBYCC Closed 2019 (U8)	2019-07-27	2019-07-27	Standard	Nelson Mandela Bay (ENM)	6	5	3	Yes	Analysis
13	Nelson Mandela Bay Junior Trials 4 2019 (U8)	2019-07-13	2019-07-13	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
14	NMBJCU Trials 3 2019 (U8)	2019-05-11	2019-05-11	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
15	Nelson Mandela Bay Junior Chess Trials 2 2019 (U8)	2019-04-06	2019-04-06	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis

#	Games	Start				End
1	6	Tournament Pearson Chess Festival 2022				Tournament 2022 NMB Junior Trials 1
		date 2022-02-26	rnd 4	type Standard	result 1	date 2022-04-23	rnd 4	type Standard	result 1
		Opponent Goosen, A (Angus)				Opponent Wessels, F (Francois)
2	6	Tournament Ulitmate Chess Open 2019				Tournament 2019 South African Junior Team Championships
		date 2019-11-30	rnd 3	type Rapid	result 1	date 2020-01-04	rnd 2	type Standard	result 1
		Opponent Abrahams , J (Janette)				Opponent Bennie, T (Thomas)
3	4	Tournament 2022 Nelson Mandela Bay Open				Tournament Pearson Chess Festival 2022
		date 2022-02-05	rnd 4	type Standard	result 1	date 2022-02-25	rnd 2	type Standard	result 1
		Opponent Louw, S (Saskian)				Opponent Nell, C (Chelsea Jane)

#	Games	Start				End
1	6	Tournament Pearson Chess Festival 2022				Tournament 2022 NMB Junior Trials 1
		date 2022-02-26	rnd 4	type Standard	result 1	date 2022-04-23	rnd 4	type Standard	result 1
		Opponent Goosen, A (Angus)				Opponent Wessels, F (Francois)
2	4	Tournament 2022 Nelson Mandela Bay Open				Tournament Pearson Chess Festival 2022
		date 2022-02-05	rnd 4	type Standard	result 1	date 2022-02-25	rnd 2	type Standard	result 1
		Opponent Louw, S (Saskian)				Opponent Nell, C (Chelsea Jane)
3	3	Tournament Brandwag Open 2020				Tournament 2020 NMBCU Chess Trial 1
		date 2020-02-01	rnd 5	type Standard	result 1	date 2020-02-08	rnd 2	type Standard	result 1
		Opponent Van Der Merwe, D (Dillen)				Opponent Pistorius, M (Mika-Li)

#	Games	Start				End
1	5	Tournament Ulitmate Chess Open 2019				Tournament NMBCU Top Schools 2024
		date 2019-11-30	rnd 3	type Rapid	result 1	date 2024-10-12	rnd 1	type Rapid	result 1
		Opponent Abrahams , J (Janette)				Opponent Schler, J (Jannei)
2	1	Tournament NMBCU Top Schools 2024				Tournament NMBCU Top Schools 2024
		date 2024-10-12	rnd 4	type Rapid	result 1	date 2024-10-12	rnd 4	type Rapid	result 1
		Opponent Fina, U (Uviwe)				Opponent Fina, U (Uviwe)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament Pearson Chess Festival 2022				Tournament 2022 NMB Junior Trials 1
		date 2022-02-26	rnd 4	type Standard	result 1	date 2022-04-23	rnd 4	type Standard	result 1
		Opponent Goosen, A (Angus)				Opponent Wessels, F (Francois)
2	6	Tournament Ulitmate Chess Open 2019				Tournament 2019 South African Junior Team Championships
		date 2019-11-30	rnd 3	type Rapid	result 1	date 2020-01-04	rnd 2	type Standard	result 1
		Opponent Abrahams , J (Janette)				Opponent Bennie, T (Thomas)
3	4	Tournament 2022 Nelson Mandela Bay Open				Tournament Pearson Chess Festival 2022
		date 2022-02-05	rnd 4	type Standard	result 1	date 2022-02-25	rnd 2	type Standard	result 1
		Opponent Louw, S (Saskian)				Opponent Nell, C (Chelsea Jane)

#	Games	Start				End
1	6	Tournament Pearson Chess Festival 2022				Tournament 2022 NMB Junior Trials 1
		date 2022-02-26	rnd 4	type Standard	result 1	date 2022-04-23	rnd 4	type Standard	result 1
		Opponent Goosen, A (Angus)				Opponent Wessels, F (Francois)
2	4	Tournament 2022 Nelson Mandela Bay Open				Tournament Pearson Chess Festival 2022
		date 2022-02-05	rnd 4	type Standard	result 1	date 2022-02-25	rnd 2	type Standard	result 1
		Opponent Louw, S (Saskian)				Opponent Nell, C (Chelsea Jane)
3	3	Tournament Brandwag Open 2020				Tournament 2020 NMBCU Chess Trial 1
		date 2020-02-01	rnd 5	type Standard	result 1	date 2020-02-08	rnd 2	type Standard	result 1
		Opponent Van Der Merwe, D (Dillen)				Opponent Pistorius, M (Mika-Li)

#	Games	Start				End
1	5	Tournament Ulitmate Chess Open 2019				Tournament NMBCU Top Schools 2024
		date 2019-11-30	rnd 3	type Rapid	result 1	date 2024-10-12	rnd 1	type Rapid	result 1
		Opponent Abrahams , J (Janette)				Opponent Schler, J (Jannei)
2	1	Tournament NMBCU Top Schools 2024				Tournament NMBCU Top Schools 2024
		date 2024-10-12	rnd 4	type Rapid	result 1	date 2024-10-12	rnd 4	type Rapid	result 1
		Opponent Fina, U (Uviwe)				Opponent Fina, U (Uviwe)

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	Driscoll ,S (Samuel)	6	2	-141.7	6	2	-141.7	0	0	0	0	0	0
1	Driscoll ,S (Samuel)	6	1193.7	1052.1	6	1188.6	1052.1	0	0	0	0	0	0
2	Gouws ,L (Logan)	6	3.5	70.8	6	3.5	70.8	0	0	0	0	0	0
2	Gouws ,L (Logan)	6	1243.5	1314.3	6	1251.2	1314.3	0	0	0	0	0	0
3	Hickman ,H (Handro)	4	1	-212.5	4	1	-212.5	0	0	0	0	0	0
3	Hickman ,H (Handro)	4	1237.9	1025.4	4	1243.5	1025.4	0	0	0	0	0	0
4	Ludick ,AC (Anaya Cassidy)	4	2	0	4	2	0	0	0	0	0	0	0
4	Ludick ,AC (Anaya Cassidy)	4	1202	1202	4	1204.4	1202	0	0	0	0	0	0
5	Claassen ,E (Enrique)	4	1	-212.5	3	0	-425	1	1	425	0	0	0
5	Claassen ,E (Enrique)	4	1273.1	1060.6	3	1240.5	848.1	1	1200	1698.1	0	0	0
6	Spence ,D (Deklyn)	2	2	425	2	2	425	0	0	0	0	0	0
6	Spence ,D (Deklyn)	2	1146.2	1571.2	2	1136	1571.2	0	0	0	0	0	0
7	Boezio ,G (Gregory)	2	2	425	2	2	425	0	0	0	0	0	0
7	Boezio ,G (Gregory)	2	1200.2	1625.2	2	1199.6	1625.2	0	0	0	0	0	0
8	Louis ,C (Caitlyn)	2	0	-425	2	0	-425	0	0	0	0	0	0
8	Louis ,C (Caitlyn)	2	1197.6	772.6	2	1206.3	772.6	0	0	0	0	0	0
9	Malan ,A (Arno)	1	1	425	1	1	425	0	0	0	0	0	0
9	Malan ,A (Arno)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Korf ,M (Michelle)	1	1	425	1	1	425	0	0	0	0	0	0
10	Korf ,M (Michelle)	1	1276.3	1701.3	1	1297.4	1701.3	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Crone, J (Judah)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms