Chess South Africa Ratings Database

PLAYER PAGE

Personal

De Lange, J (Janco)

Chess SA id

107073270

FIDE id

Date of birth

2007-01-12 (U20)

Gender

Male

Region

Sedibeng (GSV)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-08-03

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1336.7	1341.2	790.4	790.4
Raw rating	1336.7	1341.2	790.4	790.4
Weighted rating	1330.6	1333.5	790.4	790.4
Weighted performance	973.4	974.8	0	0
Floor	836.7	841.2	500	500
K-factor	36	36	40	40
Min/Max rating change allowed	136.5	135.6	297.2	297.2
Highest rating	1336.7 2024-09-01	1341.2 2024-09-01	1200 2024-02-01	1200 2024-02-01
Highest raw rating	1336.7 2024-09-01	1341.2 2024-09-01	790.4 2024-02-01	790.4 2024-02-01
Highest weighted rating	1328.1 2025-08-01	1330.3 2025-08-01	790.4 2024-11-01	790.4 2024-11-01
Highest weighted performance	1330.2 2019-07-01	1331.4 2019-07-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1336.7	1341.2	790.4	790.4
Analysis
Rating	1336.7	1341.2	790.4	790.4
Raw rating	1336.7	1341.2	790.4	790.4
Weighted rating	1330.6	1333.5	790.4
Weighted performance	973.4	974.8	0
K-factor	36	36	40	40
Floor	836.7	841.2	500	500
Max/Min rating change allowed	136.5	135.6	297.2	297.2
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	1336.7	1341.2	790.4	790.4
New weighted rating	1331.7	1334.9	790.4	790.4
New weighted performance	972.9	974.4	0	0
Temp new rating	1336.7	1341.2	790.4	790.4
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1336.7	1341.2	790.4	790.4
New K-factor	36	36	40	40
New floor	836.7	841.2	500	500

Item	Main	Standard
	0	0
	0	0
	5	5
	4	4
	6	6
	5	5
History	282	282

Games since
	Main 5	Standard 5		Rapid 0		Blitz 0
Gender	Male
Age group	U20
Region	Sedibeng (GSV)
Province	Gauteng (GT)
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	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	151	98	64.9	126.7	1030.3	1156.9
Standard	151	98	64.9	126.7	1030.3	1156.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1336.7	1341.2	790.4	790.4
2025-09-01	1336.7	1341.2	790.4	790.4
2025-08-01	1336.7	1341.2	790.4	790.4
2025-07-01	1336.7	1341.2	790.4	790.4
2025-06-01	1336.7	1341.2	790.4	790.4
2025-05-01	1336.7	1341.2	790.4	790.4
2025-04-01	1336.7	1341.2	790.4	790.4
2025-03-01	1336.7	1341.2	790.4	790.4
2025-02-01	1336.7	1341.2	790.4	790.4
2025-01-01	1336.7	1341.2	790.4	790.4
2024-12-01	1336.7	1341.2	790.4	790.4
2024-11-01	1336.7	1341.2	790.4	790.4
2024-10-01	1336.7	1341.2	790.4	790.4
2024-09-01	1336.7	1341.2	790.4	790.4
2024-08-01	1303.5	1299.1	790.4	790.4
2024-07-01	1303.5	1299.1	790.4	790.4
2024-06-01	1303.5	1299.1	790.4	790.4
2024-08-01	1303.5	1299.1	790.4	790.4
2024-04-01	1303.5	1299.1	790.4	790.4
2024-03-01	1303.5	1299.1	790.4	790.4
2024-02-01	1303.5	1299.1	790.4	790.4
2024-01-01	1303.5	1299.1	790.4	790.4
2023-12-01	1303.5	1299.1	790.4	790.4
2023-11-01	1303.5	1299.1	790.4	790.4

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	Sedibeng East D7 Teams Trials 2024 (U17)	2024-08-03	2024-08-03	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
2	Gauteng D7 Teams 2023 (U17)	2023-08-12	2023-08-12	Standard	Sedibeng (GSV)	5	4	3	Yes	Analysis
3	Hoerskool Overvaal 2022 (C)	2022-06-11	2022-06-11	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
4	LS Vryheidsmonument Chess Open 2022 (A+B)	2022-05-07	2022-05-07	Standard	Sedibeng (GSV)	5	1	0	Yes	Analysis
5	Sedibeng Trials 20 November 2021 (B)	2021-11-21	2021-11-21	Standard	Sedibeng (GSV)	5	5	2.5	Yes	Analysis
6	AG Visser 2020 (A+B)	2020-02-22	2020-02-22	Standard	Sedibeng (GSV)	5	4	1.5	Yes	Analysis
7	2019 South African Junior Team Championships (U14C)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	6	Yes	Analysis
8	Sedibeng DF Malherbe Open 2019 (C)	2019-10-12	2019-10-12	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
9	Fonteine Ope 2019 (B)	2019-10-19	2019-10-19	Standard	Sedibeng (GSV)	5	3	1	Yes	Analysis
10	GE vs GSV Inter Regional 2019 (U14C)	2019-10-26	2019-10-26	Standard	Ekurhuleni (GE)	5	5	0	Yes	Analysis
11	D7 Primary School League 2019 (U13)	2019-08-03	2019-08-03	Standard	Sedibeng (GSV)	5	4	2	Yes	Analysis
12	TST-MSA Chess Open 2019 (D)	2019-07-20	2019-07-20	Standard	Sedibeng (GSV)	5	5	5	Yes	Analysis
13	Overvaal Chess Open 2019 (D)	2019-06-15	2019-06-15	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
14	Word of Life 2019 (C)	2019-05-11	2019-05-11	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
15	D7 Individuals 2019 (U13 Boys)	2019-05-04	2019-05-04	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
16	Carels Open 2019 (B)	2019-03-02	2019-03-02	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
17	2019 Heidelberg Open (C)	2019-02-02	2019-02-02	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
18	2018 Tshwane Inter Region (U12A)	2018-12-01	2018-12-01	Standard	Cape Town (WCT)	5	5	0	Yes	Analysis
19	Eagle`s Open 2018 (B)	2018-12-08	2018-12-08	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
20	South African Junior Team Championships 2018 (U12C)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	3	Yes	Analysis
21	Henley Open 2018 (C)	2018-09-08	2018-09-08	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
22	Eureka Chess Open 2018 (B)	2018-09-29	2018-09-29	Standard	Sedibeng (GSV)	5	5	4.5	Yes	Analysis
23	TST-MSA Tournament 2018 (D)	2018-07-21	2018-07-21	Standard	Sedibeng (GSV)	5	5	3.5	Yes	Analysis
24	Broadland`s Knights Chess Open 2018 (B)	2018-06-16	2018-06-16	Standard	Sedibeng (GSV)	5	5	2.5	Yes	Analysis
25	Word of Life Open 2018 (C)	2018-05-12	2018-05-12	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
26	Amigo Spur Eligwa Chess Open 2018 (C)	2018-05-19	2018-05-19	Standard	Sedibeng (GSV)	5	5	5	Yes	Analysis
27	D7 Primary School League 2023 (U11 Boys+Mixed)	2018-04-21	2018-04-21	Standard	Sedibeng (GSV)	5	4	4	Yes	Analysis
28	Henley Open 2018 (C)	2018-03-10	2018-03-10	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
29	Carels Open 2018 (C)	2018-03-03	2018-03-03	Standard	Sedibeng (GSV)	5	5	3.5	Yes	Analysis
30	D7 Individual 2018 (U11 Boys)	2018-02-24	2018-02-24	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
31	South African Junior Team Championships 2017 (U12D)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	7	6	Yes	Analysis

#	Games	Start				End
1	8	Tournament South African Junior Team Championships 2017				Tournament D7 Individual 2018
		date 2018-01-05	rnd 3	type Standard	result 1	date 2018-02-24	rnd 3	type Standard	result 1
		Opponent Naicker, J (Jorden)				Opponent Naude, E (Enrique)
2	7	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 2020-01-08	rnd 7	type Standard	result 1
		Opponent Buthelezi, M (Mbalenhle)				Opponent Fuhri, R (Ruben)
3	7	Tournament Overvaal Chess Open 2019				Tournament TST-MSA Chess Open 2019
		date 2019-06-15	rnd 4	type Standard	result 1	date 2019-07-20	rnd 5	type Standard	result 1
		Opponent Hanekom, J (Jayden)				Opponent Brenkman, K (Krystal)

#	Games	Start				End
1	8	Tournament South African Junior Team Championships 2017				Tournament D7 Individual 2018
		date 2018-01-05	rnd 3	type Standard	result 1	date 2018-02-24	rnd 3	type Standard	result 1
		Opponent Naicker, J (Jorden)				Opponent Naude, E (Enrique)
2	7	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 2020-01-08	rnd 7	type Standard	result 1
		Opponent Buthelezi, M (Mbalenhle)				Opponent Fuhri, R (Ruben)
3	7	Tournament Overvaal Chess Open 2019				Tournament TST-MSA Chess Open 2019
		date 2019-06-15	rnd 4	type Standard	result 1	date 2019-07-20	rnd 5	type Standard	result 1
		Opponent Hanekom, J (Jayden)				Opponent Brenkman, K (Krystal)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	8	Tournament South African Junior Team Championships 2017				Tournament D7 Individual 2018
		date 2018-01-05	rnd 3	type Standard	result 1	date 2018-02-24	rnd 3	type Standard	result 1
		Opponent Naicker, J (Jorden)				Opponent Naude, E (Enrique)
2	7	Tournament Overvaal Chess Open 2019				Tournament TST-MSA Chess Open 2019
		date 2019-06-15	rnd 4	type Standard	result 1	date 2019-07-20	rnd 5	type Standard	result 1
		Opponent Hanekom, J (Jayden)				Opponent Brenkman, K (Krystal)
3	6	Tournament Henley Open 2018				Tournament Eureka Chess Open 2018
		date 2018-09-08	rnd 4	type Standard	result 1	date 2018-09-29	rnd 4	type Standard	result 1
		Opponent Louw, N (Nova)				Opponent Coetzee, J (Jaco)

#	Games	Start				End
1	8	Tournament South African Junior Team Championships 2017				Tournament D7 Individual 2018
		date 2018-01-05	rnd 3	type Standard	result 1	date 2018-02-24	rnd 3	type Standard	result 1
		Opponent Naicker, J (Jorden)				Opponent Naude, E (Enrique)
2	7	Tournament Overvaal Chess Open 2019				Tournament TST-MSA Chess Open 2019
		date 2019-06-15	rnd 4	type Standard	result 1	date 2019-07-20	rnd 5	type Standard	result 1
		Opponent Hanekom, J (Jayden)				Opponent Brenkman, K (Krystal)
3	6	Tournament Henley Open 2018				Tournament Eureka Chess Open 2018
		date 2018-09-08	rnd 4	type Standard	result 1	date 2018-09-29	rnd 4	type Standard	result 1
		Opponent Louw, N (Nova)				Opponent Coetzee, J (Jaco)

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	Eberwein ,HJ (Heinrich Jurgen)	3	3	425	3	3	425	0	0	0	0	0	0
1	Eberwein ,HJ (Heinrich Jurgen)	3	1251.9	1676.9	3	1246	1676.9	0	0	0	0	0	0
2	Tolmay ,L (Llewellyn)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
2	Tolmay ,L (Llewellyn)	3	1211.8	1353.5	3	1212.2	1353.5	0	0	0	0	0	0
3	Hanekom ,D (Dylan)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
3	Hanekom ,D (Dylan)	3	774.6	632.9	3	792.2	632.9	0	0	0	0	0	0
4	Matsunyane ,E (Edwin)	3	1.5	0	3	1.5	0	0	0	0	0	0	0
4	Matsunyane ,E (Edwin)	3	927.6	927.6	3	932.3	927.6	0	0	0	0	0	0
5	Mphana ,B (Bohlale)	3	3	425	3	3	425	0	0	0	0	0	0
5	Mphana ,B (Bohlale)	3	659.6	1084.6	3	663.3	1084.6	0	0	0	0	0	0
6	Van Der Net ,ME (Mariel)	2	2	425	2	2	425	0	0	0	0	0	0
6	Van Der Net ,ME (Mariel)	2	745.1	1170.1	2	746.3	1170.1	0	0	0	0	0	0
7	Nhlapo ,S (Shawn)	2	1	0	2	1	0	0	0	0	0	0	0
7	Nhlapo ,S (Shawn)	2	1044.2	1044.2	2	1022.6	1044.2	0	0	0	0	0	0
8	Roetz ,K (Kyle)	2	2	425	2	2	425	0	0	0	0	0	0
8	Roetz ,K (Kyle)	2	1040.4	1465.4	2	1039.5	1465.4	0	0	0	0	0	0
9	Williams ,A (Anrico)	2	0	-425	2	0	-425	0	0	0	0	0	0
9	Williams ,A (Anrico)	2	977.3	552.3	2	975.5	552.3	0	0	0	0	0	0
10	Visser ,IC (Ivan)	2	0	-425	2	0	-425	0	0	0	0	0	0
10	Visser ,IC (Ivan)	2	1021.8	596.8	2	1035.6	596.8	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

De Lange, J (Janco)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms