Chess South Africa Ratings Database

PLAYER PAGE

Personal

De Koker, J (Juandre)

Chess SA id

1100149256

FIDE id

Date of birth

2010-02-18 (U16)

Gender

Male

Region

West Rand (GWR)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-07-22

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1241	1245.5	1200	1200
Raw rating	1241	1245.5	1200	1200
Weighted rating	1241	1245.5	1200	1200
Weighted performance	0	0	0	0
Floor	741	745.5	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	156.4	155.4	165.8	165.8
Highest rating	1283.9 2023-02-01	1280.1 2023-02-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1241 2024-03-01	1245.5 2024-03-01	1200 2024-03-01	1200 2024-03-01
Highest weighted rating	1241 2025-06-01	1245.5 2025-06-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1283.9 2023-02-01	1280.1 2023-02-01	1200 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1241	1245.5	1200	1200
Analysis
Rating	1241	1245.5	1200	1200
Raw rating	1241	1245.5	1200	1200
Weighted rating	1241	1245.5	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	741	745.5	700	700
Max/Min rating change allowed	156.4	155.4	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	1241	1245.5	1200	1200
New weighted rating	1241	1245.5	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1241	1245.5	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1241	1245.5	1200	1200
New K-factor	36	36	36	36
New floor	741	745.5	700	700

Item	Main	Standard
	0	0
	0	0
	0	0
	19	19
	0	0
	0	0
History	19	19

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	West Rand (GWR)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 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	19	10	52.63	22.4	1260	1282.4
Standard	19	10	52.63	22.4	1260	1282.4
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1241	1245.5	1200	1200
2025-09-30	1241	1245.5	1200	1200
2025-09-01	1241	1245.5	1200	1200
2025-08-01	1241	1245.5	1200	1200
2025-07-01	1241	1245.5	1200	1200
2025-06-01	1241	1245.5	1200	1200
2025-05-01	1241	1245.5	1200	1200
2025-04-01	1241	1245.5	1200	1200
2025-03-01	1241	1245.5	1200	1200
2025-02-01	1241	1245.5	1200	1200
2025-01-01	1241	1245.5	1200	1200
2024-12-01	1241	1245.5	1200	1200
2024-11-01	1241	1245.5	1200	1200
2024-10-01	1241	1245.5	1200	1200
2024-09-01	1241	1245.5	1200	1200
2024-08-01	1241	1245.5	1200	1200
2024-07-01	1241	1245.5	1200	1200
2024-09-01	1241	1245.5	1200	1200
2024-05-01	1241	1245.5	1200	1200
2024-04-01	1241	1245.5	1200	1200
2024-03-01	1241	1245.5	1200	1200
2024-02-01	1241	1245.5	1200	1200
2024-01-01	1241	1245.5	1200	1200
2023-12-01	1241	1245.5	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	D2 School League Finals 2023 (U13)	2023-07-22	2023-07-22	Standard	West Rand (GWR)	5	4	2.5	Yes	Analysis
2	2023 West Rand RHS Open (Rooks)	2023-06-10	2023-06-10	Standard	West Rand (GWR)	5	5	2	Yes	Analysis
3	WR Tournament and Coaching 2023 (U14)	2023-02-25	2023-02-25	Standard	West Rand (GWR)	5	5	2.5	Yes	Analysis
4	2023 West Rand Open (U14)	2023-02-04	2023-02-04	Standard	West Rand (GWR)	5	5	3	Yes	Analysis

#	Games	Start				End
1	4	Tournament 2023 West Rand Open				Tournament WR Tournament and Coaching 2023
		date 2023-02-04	rnd 4	type Standard	result 1	date 2023-02-25	rnd 2	type Standard	result 0.5
		Opponent Human, H (Hanno)				Opponent Van Schalkwyk, A (Ag)
2	2	Tournament D2 School League Finals 2023				Tournament D2 School League Finals 2023
		date 2023-07-22	rnd 4	type Standard	result 1	date 2023-07-22	rnd 5	type Standard	result 0.5
		Opponent Mthembu, J (Jabulani)				Opponent Behr, A (Alexander)
3	2	Tournament 2023 West Rand RHS Open				Tournament D2 School League Finals 2023
		date 2023-06-10	rnd 5	type Standard	result 1	date 2023-07-22	rnd 1	type Standard	result 1
		Opponent Kgotse, T (Thoriso)				Opponent Matwa, Z (Zizo)

#	Games	Start				End
1	4	Tournament 2023 West Rand Open				Tournament WR Tournament and Coaching 2023
		date 2023-02-04	rnd 4	type Standard	result 1	date 2023-02-25	rnd 2	type Standard	result 0.5
		Opponent Human, H (Hanno)				Opponent Van Schalkwyk, A (Ag)
2	2	Tournament D2 School League Finals 2023				Tournament D2 School League Finals 2023
		date 2023-07-22	rnd 4	type Standard	result 1	date 2023-07-22	rnd 5	type Standard	result 0.5
		Opponent Mthembu, J (Jabulani)				Opponent Behr, A (Alexander)
3	2	Tournament 2023 West Rand RHS Open				Tournament D2 School League Finals 2023
		date 2023-06-10	rnd 5	type Standard	result 1	date 2023-07-22	rnd 1	type Standard	result 1
		Opponent Kgotse, T (Thoriso)				Opponent Matwa, Z (Zizo)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament 2023 West Rand Open				Tournament WR Tournament and Coaching 2023
		date 2023-02-04	rnd 4	type Standard	result 1	date 2023-02-25	rnd 1	type Standard	result 1
		Opponent Human, H (Hanno)				Opponent De Koker, H (Hugo)
2	2	Tournament 2023 West Rand RHS Open				Tournament D2 School League Finals 2023
		date 2023-06-10	rnd 5	type Standard	result 1	date 2023-07-22	rnd 1	type Standard	result 1
		Opponent Kgotse, T (Thoriso)				Opponent Matwa, Z (Zizo)
3	1	Tournament D2 School League Finals 2023				Tournament D2 School League Finals 2023
		date 2023-07-22	rnd 4	type Standard	result 1	date 2023-07-22	rnd 4	type Standard	result 1
		Opponent Mthembu, J (Jabulani)				Opponent Mthembu, J (Jabulani)

#	Games	Start				End
1	3	Tournament 2023 West Rand Open				Tournament WR Tournament and Coaching 2023
		date 2023-02-04	rnd 4	type Standard	result 1	date 2023-02-25	rnd 1	type Standard	result 1
		Opponent Human, H (Hanno)				Opponent De Koker, H (Hugo)
2	2	Tournament 2023 West Rand RHS Open				Tournament D2 School League Finals 2023
		date 2023-06-10	rnd 5	type Standard	result 1	date 2023-07-22	rnd 1	type Standard	result 1
		Opponent Kgotse, T (Thoriso)				Opponent Matwa, Z (Zizo)
3	1	Tournament D2 School League Finals 2023				Tournament D2 School League Finals 2023
		date 2023-07-22	rnd 4	type Standard	result 1	date 2023-07-22	rnd 4	type Standard	result 1
		Opponent Mthembu, J (Jabulani)				Opponent Mthembu, J (Jabulani)

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	Roos ,S (Shani)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Roos ,S (Shani)	2	1364.6	939.6	2	1351.3	939.6	0	0	0	0	0	0
2	De Koker ,H (Hugo)	1	1	425	1	1	425	0	0	0	0	0	0
2	De Koker ,H (Hugo)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
3	Van Schalkwyk ,A (Ag)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
3	Van Schalkwyk ,A (Ag)	1	1200	1200	1	1200	1200	0	0	0	0	0	0
4	Mutsambwa ,T (Trevor)	1	1	425	1	1	425	0	0	0	0	0	0
4	Mutsambwa ,T (Trevor)	1	1351.7	1776.7	1	1350.6	1776.7	0	0	0	0	0	0
5	Vermeulen ,R (Raegan)	1	1	425	1	1	425	0	0	0	0	0	0
5	Vermeulen ,R (Raegan)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
6	Mthembu ,J (Jabulani)	1	1	425	1	1	425	0	0	0	0	0	0
6	Mthembu ,J (Jabulani)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Sirwe ,O (Oratile)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Sirwe ,O (Oratile)	1	1225.2	800.2	1	1228.4	800.2	0	0	0	0	0	0
8	Maritz ,W (Waldo Hermann)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Maritz ,W (Waldo Hermann)	1	1200	775	1	1200	775	0	0	0	0	0	0
9	Esterhuizen ,Z (Zane)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Esterhuizen ,Z (Zane)	1	1427.4	1002.4	1	1428.7	1002.4	0	0	0	0	0	0
10	Phato ,T (Thabang)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Phato ,T (Thabang)	1	1168.8	743.8	1	1156.8	743.8	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 Koker, J (Juandre)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms