Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jantjies, J (Jowan)

Chess SA id

102083810

FIDE id

Date of birth

2002-07-14 (Adult)

Gender

Male

Region

Eden (WEG)

Citizen

RSA

Titles

Chess SA registered

Last active game

2019-10-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1141.7	1115.6	729.7	640.9
Raw rating	1141.7	1115.6	729.7	640.9
Weighted rating	1141.7	1115.6	729.7	640.9
Weighted performance	255.5	244.9	0	0
Floor	664.7	639.6	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	180.2	187	324.1	367.8
Highest rating	1200 2024-11-01	1200 2024-11-01	1200 2018-02-01	1200 2024-02-01
Highest raw rating	1164.7 2019-07-01	1139.6 2019-04-01	729.7 2024-02-01	640.9 2024-02-01
Highest weighted rating	1164.7 2024-11-01	1139.6 2024-11-01	729.7 2024-11-01	640.9 2024-11-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2018-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1141.7	1115.6	729.7	640.9
Analysis
Rating	1141.7	1115.6	729.7	640.9
Raw rating	1141.7	1115.6	729.7	640.9
Weighted rating	1141.7	1115.6	729.7
Weighted performance	255.5	244.9	0
K-factor	40	40	40	40
Floor	664.7	639.6	500	500
Max/Min rating change allowed	180.2	187	324.1	367.8
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	1141.7	1115.6	729.7	640.9
New weighted rating	1141.7	1115.6	729.7	640.9
New weighted performance	255.1	244.5	0	0
Temp new rating	1141.7	1115.6	729.7	640.9
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1141.7	1115.6	729.7	640.9
New K-factor	40	40	40	40
New floor	664.7	639.6	500	500

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	103	88	15

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Eden (WEG)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult 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	59	27	45.76	-36	1043.2	1007.2
Standard	48	22	45.83	-35.4	1032.3	996.9
Rapid	11	5	45.45	-38.6	1091	1052.4
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1141.7	1115.6	729.7	640.9
2025-09-01	1141.7	1115.6	729.7	640.9
2025-08-01	1141.7	1115.6	729.7	640.9
2025-07-01	1141.7	1115.6	729.7	640.9
2025-06-01	1141.7	1115.6	729.7	640.9
2025-05-01	1141.7	1115.6	729.7	640.9
2025-04-01	1141.7	1115.6	729.7	640.9
2025-03-01	1141.7	1115.6	729.7	640.9
2025-02-01	1141.7	1115.6	729.7	640.9
2025-01-01	1141.7	1115.6	729.7	640.9
2024-12-01	1141.7	1115.6	729.7	640.9
2024-11-01	1141.7	1115.6	729.7	640.9
2024-10-01	1141.7	1115.6	729.7	640.9
2024-09-01	1141.7	1115.6	729.7	640.9
2024-08-01	1141.7	1115.6	729.7	640.9
2024-07-01	1141.7	1115.6	729.7	640.9
2024-06-01	1141.7	1115.6	729.7	640.9
2024-08-01	1141.7	1115.6	729.7	640.9
2024-04-01	1141.7	1115.6	729.7	640.9
2024-03-01	1141.7	1115.6	729.7	640.9
2024-02-01	1141.7	1115.6	729.7	640.9
2024-01-01	1141.7	1115.6	729.7	640.9
2023-12-01	1141.7	1115.6	729.7	640.9
2023-11-01	1141.7	1115.6	729.7	640.9

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	2019 Western Cape Club Championship (A+B)	2019-10-25	2019-10-27	Standard	Overberg (WOS)	6	5	2	Yes	Analysis
2	Eden Top Schools 2019 (U18)	2019-07-20	2019-07-20	Standard	Eden (WEG)	5	5	3	Yes	Analysis
3	Oyster Rapid Chess Festival 2019	2019-06-30	2019-06-30	Rapid	Eden (WEG)	6	6	3	Yes	Analysis
4	Eden Trials 1 2019 (U18 Open)	2019-03-02	2019-03-02	Standard	Eden (WEG)	5	5	2.5	Yes	Analysis
5	Hessequa Proewe 3 2019 (O18)	2019-02-23	2019-02-23	Standard	Eden (WEG)	5	4	3	Yes	Analysis
6	Hessequa Proewe 2 2019 (O18)	2019-02-16	2019-02-16	Standard	Eden (WEG)	5	3	2	Yes	Analysis
7	Hessequa Proewe 1 2019 (O18)	2019-01-26	2019-01-26	Standard	Eden (WEG)	5	5	2.5	Yes	Analysis
8	Eden Chess League 2018 (3rd Division)	2018-09-01	2018-09-01	Rapid	Eden (WEG)	7	5	2	Yes	Analysis
9	EDENSC Closed 3 2018 (U18 Open)	2018-05-12	2018-05-12	Standard	Eden (WEG)	5	4	0.5	Yes	Analysis
10	EDENSC Closed 2 2018 (U18 (Open)	2018-04-14	2018-04-14	Standard	Eden (WEG)	5	5	2.5	Yes	Analysis
11	EDENSC Closed 1 2018 (U18)	2018-03-10	2018-03-10	Standard	Eden (WEG)	5	5	2	Yes	Analysis
12	Western Cape Club Championships 2018	2018-03-16	2018-03-17	Standard	Eden (WEG)	6	2	0	Yes	Analysis
13	South African Junior Team Championships 2017 (U16D)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	5	2	Yes	Analysis

#	Games	Start				End
1	5	Tournament Hessequa Proewe 2 2019				Tournament Hessequa Proewe 3 2019
		date 2019-02-16	rnd 2	type Standard	result 1	date 2019-02-23	rnd 4	type Standard	result 1
		Opponent Patel, K (Kyle)				Opponent Saayman, R (Roderick)
2	3	Tournament Oyster Rapid Chess Festival 2019				Tournament Eden Top Schools 2019
		date 2019-06-30	rnd 5	type Rapid	result 1	date 2019-07-20	rnd 1	type Standard	result 1
		Opponent Adams, J (Jay-D)				Opponent Geysman, K (Keallin)
3	2	Tournament Eden Trials 1 2019				Tournament Eden Trials 1 2019
		date 2019-03-02	rnd 2	type Standard	result 0.5	date 2019-03-02	rnd 3	type Standard	result 1
		Opponent Saayman, R (Roderick)				Opponent Isaks, C (Christopher)

#	Games	Start				End
1	5	Tournament Hessequa Proewe 2 2019				Tournament Hessequa Proewe 3 2019
		date 2019-02-16	rnd 2	type Standard	result 1	date 2019-02-23	rnd 4	type Standard	result 1
		Opponent Patel, K (Kyle)				Opponent Saayman, R (Roderick)
2	2	Tournament Eden Trials 1 2019				Tournament Eden Top Schools 2019
		date 2019-03-02	rnd 5	type Standard	result 1	date 2019-07-20	rnd 1	type Standard	result 1
		Opponent Greeff, B (Ben)				Opponent Geysman, K (Keallin)
3	2	Tournament Eden Trials 1 2019				Tournament Eden Trials 1 2019
		date 2019-03-02	rnd 2	type Standard	result 0.5	date 2019-03-02	rnd 3	type Standard	result 1
		Opponent Saayman, R (Roderick)				Opponent Isaks, C (Christopher)

#	Games	Start				End
1	2	Tournament Oyster Rapid Chess Festival 2019				Tournament Oyster Rapid Chess Festival 2019
		date 2019-06-30	rnd 5	type Rapid	result 1	date 2019-06-30	rnd 6	type Rapid	result 1
		Opponent Adams, J (Jay-D)				Opponent Bridges, C (Cai)
2	2	Tournament Eden Chess League 2018				Tournament Eden Chess League 2018
		date 2018-09-01	rnd 2	type Rapid	result 1	date 2018-09-01	rnd 3	type Rapid	result 1
		Opponent George, J (Jamie-Lee)				Opponent Groenewald, A (Anwille)
3	1	Tournament Oyster Rapid Chess Festival 2019				Tournament Oyster Rapid Chess Festival 2019
		date 2019-06-30	rnd 3	type Rapid	result 1	date 2019-06-30	rnd 3	type Rapid	result 1
		Opponent Fredericks, J (Jean Pierre)				Opponent Fredericks, J (Jean Pierre)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Hessequa Proewe 2 2019				Tournament Hessequa Proewe 3 2019
		date 2019-02-16	rnd 2	type Standard	result 1	date 2019-02-23	rnd 4	type Standard	result 1
		Opponent Patel, K (Kyle)				Opponent Saayman, R (Roderick)
2	3	Tournament Oyster Rapid Chess Festival 2019				Tournament Eden Top Schools 2019
		date 2019-06-30	rnd 5	type Rapid	result 1	date 2019-07-20	rnd 1	type Standard	result 1
		Opponent Adams, J (Jay-D)				Opponent Geysman, K (Keallin)
3	2	Tournament Eden Chess League 2018				Tournament Eden Chess League 2018
		date 2018-09-01	rnd 2	type Rapid	result 1	date 2018-09-01	rnd 3	type Rapid	result 1
		Opponent George, J (Jamie-Lee)				Opponent Groenewald, A (Anwille)

#	Games	Start				End
1	5	Tournament Hessequa Proewe 2 2019				Tournament Hessequa Proewe 3 2019
		date 2019-02-16	rnd 2	type Standard	result 1	date 2019-02-23	rnd 4	type Standard	result 1
		Opponent Patel, K (Kyle)				Opponent Saayman, R (Roderick)
2	2	Tournament Eden Trials 1 2019				Tournament Eden Top Schools 2019
		date 2019-03-02	rnd 5	type Standard	result 1	date 2019-07-20	rnd 1	type Standard	result 1
		Opponent Greeff, B (Ben)				Opponent Geysman, K (Keallin)
3	2	Tournament South African Junior Team Championships 2017				Tournament South African Junior Team Championships 2017
		date 2018-01-04	rnd 1	type Standard	result 1	date 2018-01-04	rnd 2	type Standard	result 1
		Opponent Maharaj, S (Sarjana)				Opponent Jurisich, J (Jared)

#	Games	Start				End
1	2	Tournament Oyster Rapid Chess Festival 2019				Tournament Oyster Rapid Chess Festival 2019
		date 2019-06-30	rnd 5	type Rapid	result 1	date 2019-06-30	rnd 6	type Rapid	result 1
		Opponent Adams, J (Jay-D)				Opponent Bridges, C (Cai)
2	2	Tournament Eden Chess League 2018				Tournament Eden Chess League 2018
		date 2018-09-01	rnd 2	type Rapid	result 1	date 2018-09-01	rnd 3	type Rapid	result 1
		Opponent George, J (Jamie-Lee)				Opponent Groenewald, A (Anwille)
3	1	Tournament Oyster Rapid Chess Festival 2019				Tournament Oyster Rapid Chess Festival 2019
		date 2019-06-30	rnd 3	type Rapid	result 1	date 2019-06-30	rnd 3	type Rapid	result 1
		Opponent Fredericks, J (Jean Pierre)				Opponent Fredericks, J (Jean Pierre)

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	Saayman ,R (Roderick)	3	2.5	283.3	3	2.5	283.3	0	0	0	0	0	0
1	Saayman ,R (Roderick)	3	1134.5	1417.8	3	1122.8	1417.8	0	0	0	0	0	0
2	Heynse ,C (Christiano)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Heynse ,C (Christiano)	2	1226.9	801.9	2	1231	801.9	0	0	0	0	0	0
3	Arendse ,A (Amy-Leigh)	2	2	425	2	2	425	0	0	0	0	0	0
3	Arendse ,A (Amy-Leigh)	2	977.8	1402.8	2	964	1402.8	0	0	0	0	0	0
4	Daniels ,J (Jerome)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Daniels ,J (Jerome)	1	1329.2	904.2	1	1303.6	904.2	0	0	0	0	0	0
5	Fourie ,C (Corne)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Fourie ,C (Corne)	1	1259.5	834.5	1	1265.4	834.5	0	0	0	0	0	0
6	Mentoor ,M (Mason)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Mentoor ,M (Mason)	1	969.9	544.9	1	969.3	544.9	0	0	0	0	0	0
7	Manho ,R (Reineilmar)	1	1	425	1	1	425	0	0	0	0	0	0
7	Manho ,R (Reineilmar)	1	782	1207	1	782	1207	0	0	0	0	0	0
8	Jurisich ,J (Jared)	1	1	425	1	1	425	0	0	0	0	0	0
8	Jurisich ,J (Jared)	1	701.6	1126.6	1	701.6	1126.6	0	0	0	0	0	0
9	Mguzulwa ,E (Esona)	1	1	425	1	1	425	0	0	0	0	0	0
9	Mguzulwa ,E (Esona)	1	892.6	1317.6	1	912.4	1317.6	0	0	0	0	0	0
10	Beukes ,K (Kyle)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Beukes ,K (Kyle)	1	1069.7	644.7	1	1071	644.7	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Jantjies, J (Jowan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms