Chess South Africa Ratings Database

PLAYER PAGE

Personal

De Koker, J (Josh)

Chess SA id

1070118016

FIDE id

Date of birth

2007-03-28 (U20)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2019-09-07

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1151.9	1145.2	1188	1200
Raw rating	1151.9	1145.2	1188	1200
Weighted rating	1151.9	1145.2	1188	1200
Weighted performance	0	0	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	177.6	179.3	168.7	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2018-02-01	1200 2018-02-01	1200 2018-02-01	1200 2024-02-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2018-02-01	1200 2018-02-01	1200 2018-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1151.9	1145.2	1188	1200
Analysis
Rating	1151.9	1145.2	1188	1200
Raw rating	1151.9	1145.2	1188	1200
Weighted rating	1151.9	1145.2	1188
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	177.6	179.3	168.7	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	1151.9	1145.2	1188	1200
New weighted rating	1151.9	1145.2	1188	1200
New weighted performance	0	0	0	0
Temp new rating	1151.9	1145.2	1188	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1151.9	1145.2	1188	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	10	4	6

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U20
Region	Cape Town (WCT)
Province	Western Cape (WC)
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	10	4	40	-85	1140.9	1055.9
Standard	4	1	25	-212.5	1179.5	967
Rapid	6	3	50	0	1115.2	1115.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1151.9	1145.2	1188	1200
2025-09-01	1151.9	1145.2	1188	1200
2025-08-01	1151.9	1145.2	1188	1200
2025-07-01	1151.9	1145.2	1188	1200
2025-06-01	1151.9	1145.2	1188	1200
2025-05-01	1151.9	1145.2	1188	1200
2025-04-01	1151.9	1145.2	1188	1200
2025-03-01	1151.9	1145.2	1188	1200
2025-02-01	1151.9	1145.2	1188	1200
2025-01-01	1151.9	1145.2	1188	1200
2024-12-01	1151.9	1145.2	1188	1200
2024-11-01	1151.9	1145.2	1188	1200
2024-10-01	1151.9	1145.2	1188	1200
2024-09-01	1151.9	1145.2	1188	1200
2024-08-01	1151.9	1145.2	1188	1200
2024-07-01	1151.9	1145.2	1188	1200
2024-06-01	1151.9	1145.2	1188	1200
2024-08-01	1151.9	1145.2	1188	1200
2024-04-01	1151.9	1145.2	1188	1200
2024-03-01	1151.9	1145.2	1188	1200
2024-02-01	1151.9	1145.2	1188	1200
2024-01-01	1151.9	1145.2	1188	1200
2023-12-01	1151.9	1145.2	1188	1200
2023-11-01	1151.9	1145.2	1188	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	The Manhattan Sweets & Super C National Chess Tournament 2019 (U13)	2019-09-06	2019-09-07	Standard	Cape Winelands (WCW)	5	4	1	Yes	Analysis
2	Curro Durbanville Chess Tournament 2019 (Junior)	2019-08-24	2019-08-24	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis

#	Games	Start				End
1	2	Tournament Curro Durbanville Chess Tournament 2019				Tournament Curro Durbanville Chess Tournament 2019
		date 2019-08-24	rnd 3	type Rapid	result 1	date 2019-08-24	rnd 4	type Rapid	result 1
		Opponent Siebert, E (Emily)				Opponent Solomon, I (Izaiah)
2	1	Tournament The Manhattan Sweets & Super C National Chess Tournament 2019				Tournament The Manhattan Sweets & Super C National Chess Tournament 2019
		date 2019-09-07	rnd 4	type Standard	result 1	date 2019-09-07	rnd 4	type Standard	result 1
		Opponent Fani, Z (Zimi)				Opponent Fani, Z (Zimi)
3	1	Tournament Curro Durbanville Chess Tournament 2019				Tournament Curro Durbanville Chess Tournament 2019
		date 2019-08-24	rnd 1	type Rapid	result 1	date 2019-08-24	rnd 1	type Rapid	result 1
		Opponent Niemand, J (Jansu)				Opponent Niemand, J (Jansu)

#	Games	Start				End
1	1	Tournament The Manhattan Sweets & Super C National Chess Tournament 2019				Tournament The Manhattan Sweets & Super C National Chess Tournament 2019
		date 2019-09-07	rnd 4	type Standard	result 1	date 2019-09-07	rnd 4	type Standard	result 1
		Opponent Fani, Z (Zimi)				Opponent Fani, Z (Zimi)

#	Games	Start				End
1	2	Tournament Curro Durbanville Chess Tournament 2019				Tournament Curro Durbanville Chess Tournament 2019
		date 2019-08-24	rnd 3	type Rapid	result 1	date 2019-08-24	rnd 4	type Rapid	result 1
		Opponent Siebert, E (Emily)				Opponent Solomon, I (Izaiah)
2	1	Tournament Curro Durbanville Chess Tournament 2019				Tournament Curro Durbanville Chess Tournament 2019
		date 2019-08-24	rnd 1	type Rapid	result 1	date 2019-08-24	rnd 1	type Rapid	result 1
		Opponent Niemand, J (Jansu)				Opponent Niemand, J (Jansu)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Curro Durbanville Chess Tournament 2019				Tournament Curro Durbanville Chess Tournament 2019
		date 2019-08-24	rnd 3	type Rapid	result 1	date 2019-08-24	rnd 4	type Rapid	result 1
		Opponent Siebert, E (Emily)				Opponent Solomon, I (Izaiah)
2	1	Tournament The Manhattan Sweets & Super C National Chess Tournament 2019				Tournament The Manhattan Sweets & Super C National Chess Tournament 2019
		date 2019-09-07	rnd 4	type Standard	result 1	date 2019-09-07	rnd 4	type Standard	result 1
		Opponent Fani, Z (Zimi)				Opponent Fani, Z (Zimi)
3	1	Tournament Curro Durbanville Chess Tournament 2019				Tournament Curro Durbanville Chess Tournament 2019
		date 2019-08-24	rnd 1	type Rapid	result 1	date 2019-08-24	rnd 1	type Rapid	result 1
		Opponent Niemand, J (Jansu)				Opponent Niemand, J (Jansu)

#	Games	Start				End
1	1	Tournament The Manhattan Sweets & Super C National Chess Tournament 2019				Tournament The Manhattan Sweets & Super C National Chess Tournament 2019
		date 2019-09-07	rnd 4	type Standard	result 1	date 2019-09-07	rnd 4	type Standard	result 1
		Opponent Fani, Z (Zimi)				Opponent Fani, Z (Zimi)

#	Games	Start				End
1	2	Tournament Curro Durbanville Chess Tournament 2019				Tournament Curro Durbanville Chess Tournament 2019
		date 2019-08-24	rnd 3	type Rapid	result 1	date 2019-08-24	rnd 4	type Rapid	result 1
		Opponent Siebert, E (Emily)				Opponent Solomon, I (Izaiah)
2	1	Tournament Curro Durbanville Chess Tournament 2019				Tournament Curro Durbanville Chess Tournament 2019
		date 2019-08-24	rnd 1	type Rapid	result 1	date 2019-08-24	rnd 1	type Rapid	result 1
		Opponent Niemand, J (Jansu)				Opponent Niemand, J (Jansu)

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	Fani ,Z (Zimi)	1	1	425	1	1	425	0	0	0	0	0	0
1	Fani ,Z (Zimi)	1	1056.3	1481.3	1	981.6	1481.3	0	0	0	0	0	0
2	Winter ,C (Cuthanzario)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Winter ,C (Cuthanzario)	1	1263.8	838.8	1	1170.2	838.8	0	0	0	0	0	0
3	Gcuze ,K (Khanya)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Gcuze ,K (Khanya)	1	1231.8	806.8	1	1199.4	806.8	0	0	0	0	0	0
4	Siyo ,A (Ayabulela)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Siyo ,A (Ayabulela)	1	1166.1	741.1	1	1135.4	741.1	0	0	0	0	0	0
5	Adams ,E (Ethan)	1	0	-425	0	0	0	1	0	-425	0	0	0
5	Adams ,E (Ethan)	1	1088.7	663.7	0	0	0	1	1088.8	663.7	0	0	0
6	Siebert ,E (Emily)	1	1	425	0	0	0	1	1	425	0	0	0
6	Siebert ,E (Emily)	1	1070.9	1495.9	0	0	0	1	1171.2	1495.9	0	0	0
7	Solomon ,I (Izaiah)	1	1	425	0	0	0	1	1	425	0	0	0
7	Solomon ,I (Izaiah)	1	1049.1	1474.1	0	0	0	1	1100	1474.1	0	0	0
8	Ebrahim ,N (Nabeelah)	1	0	-425	0	0	0	1	0	-425	0	0	0
8	Ebrahim ,N (Nabeelah)	1	1219.9	794.9	0	0	0	1	1231.8	794.9	0	0	0
9	Wilson ,J (James)	1	0	-425	0	0	0	1	0	-425	0	0	0
9	Wilson ,J (James)	1	1057.9	632.9	0	0	0	1	1141.6	632.9	0	0	0
10	Niemand ,J (Jansu)	1	1	425	0	0	0	1	1	425	0	0	0
10	Niemand ,J (Jansu)	1	1204.6	1629.6	0	0	0	1	1195.2	1629.6	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

De Koker, J (Josh)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms