Chess South Africa Ratings Database

PLAYER PAGE

Personal

Janse Van Rensburg, J (Jacob)

Chess SA id

1130312979

FIDE id

Date of birth

2013-10-28 (U14)

Gender

Male

Region

Eden (WEG)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-07-26

Personal details last changed

1900-01-01

Junior GPX Games

34.7

Junior GPX Points

1255.2

Item	Main	Standard	Rapid	Blitz
Rating	1271.4	1273.4	1195.2	1200
Raw rating	1271.4	1273.4	1195.2	1200
Weighted rating	1241.2	1243.5	1194.4	1200
Weighted performance	1195.6	1191.6	0	0
Floor	777.2	780.6	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	149.8	149.4	167	165.8
Highest rating	1277.2 2025-05-05	1280.6 2025-05-05	1200 2024-10-01	1200 2024-10-01
Highest raw rating	1277.2 2025-05-05	1280.6 2025-05-05	1200 2024-10-01	1200 2024-10-01
Highest weighted rating	1228.7 2025-08-01	1230.9 2025-08-01	1200 2024-10-01	1200 2024-10-01
Highest weighted performance	1271.6 2025-05-05	1263.9 2024-10-01	1200 2024-10-01	1200 2024-10-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1271.4	1273.4	1195.2	1200
Analysis
Rating	1271.4	1273.4	1195.2	1200
Raw rating	1271.4	1273.4	1195.2	1200
Weighted rating	1241.2	1243.5	1194.4
Weighted performance	1195.6	1191.6	0
K-factor	36	36	36	36
Floor	777.2	780.6	700	700
Max/Min rating change allowed	149.8	149.4	167	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	1271.4	1273.4	1195.2	1200
New weighted rating	1244.9	1247.2	1194.3	1200
New weighted performance	1188.1	1184.2	0	0
Temp new rating	1271.4	1273.4	1195.2	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1271.4	1273.4	1195.2	1200
New K-factor	36	36	36	36
New floor	777.2	780.6	700	700

Item	Main	Standard	Rapid
	0	0	0
	33	33	0
	5	0	5
	0	0	0
	0	0	0
	0	0	0
History	38	33	5

Games since
	Main 38	Standard 33		Rapid 5		Blitz 0
Gender	Male
Age group	U14
Region	Eden (WEG)
Province	Western Cape (WC)
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	3431		976		328
Male	2654		698		225
U14	652		182		63
U14 Male	462		113		40
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	33	15.5	46.97	-25.8	1331.7	1305.9
Standard	33	15.5	46.97	-25.8	1331.7	1305.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	38	17.5	46.05	-33.6	1321.4	1287.8
Standard	33	15.5	46.97	-25.8	1331.7	1305.9
Rapid	5	2	40	-85	1253.2	1168.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1271.4	1273.4	1195.2	1200
2025-09-30	1271.4	1273.4	1195.2	1200
2025-09-01	1271.4	1273.4	1195.2	1200
2025-08-01	1271.4	1273.4	1195.2	1200
2025-07-01	1277.2	1280.6	1195.2	1200
2025-06-01	1277.2	1280.6	1195.2	1200
2025-05-01	1277.2	1280.6	1195.2	1200
2025-04-01	1255.3	1255.3	1195.2	1200
2025-03-01	1249	1257.5	1195.2	1200
2025-02-01	1198.7	1200	1194.4	1200
2025-01-01	1195.5	1200	1181.2	1200
2024-12-01	1195.5	1200	1181.2	1200
2024-11-01	1195.5	1200	1181.2	1200
2024-10-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-05-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	George Top Schools 2025 (U15)	2025-07-26	2025-07-26	Standard	Eden (WEG)	5	4	1.5	Yes	Analysis
2	Eden Chess Trials 2 2025 (U14)	2025-03-15	2025-04-12	Standard	Eden (WEG)	10	9	4.5	Yes	Analysis
3	Eden Schools Chess Trials 1 2025 (U13 Boys)	2025-03-08	2025-03-08	Standard	Eden (WEG)	5	5	2	Yes	Analysis
4	George Schools Chess Trials 3 2025 (U13 Boys)	2025-03-01	2025-03-01	Standard	Eden (WEG)	5	5	2	Yes	Analysis
5	George Schools Chess Trials 2 2025 (U13 Boys)	2025-02-15	2025-02-15	Standard	Eden (WEG)	5	5	2.5	Yes	Analysis
6	George Schools Chess Trials 1 2025 (U13 Boys)	2025-02-01	2025-02-01	Standard	Eden (WEG)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	George Top Schools 2025 (U15)	2025-07-26	2025-07-26	Standard	Eden (WEG)	5	4	1.5	Yes	Analysis
2	Eden Chess Trials 2 2025 (U14)	2025-03-15	2025-04-12	Standard	Eden (WEG)	10	9	4.5	Yes	Analysis
3	Eden Schools Chess Trials 1 2025 (U13 Boys)	2025-03-08	2025-03-08	Standard	Eden (WEG)	5	5	2	Yes	Analysis
4	George Schools Chess Trials 3 2025 (U13 Boys)	2025-03-01	2025-03-01	Standard	Eden (WEG)	5	5	2	Yes	Analysis
5	George Schools Chess Trials 2 2025 (U13 Boys)	2025-02-15	2025-02-15	Standard	Eden (WEG)	5	5	2.5	Yes	Analysis
6	George Schools Chess Trials 1 2025 (U13 Boys)	2025-02-01	2025-02-01	Standard	Eden (WEG)	5	5	3	Yes	Analysis
7	George Suid Senior Skaaktoernooi 2024	2024-10-26	2024-10-26	Rapid	Eden (WEG)	5	5	2	Yes	Analysis

#	Games	Start				End
1	4	Tournament Eden Chess Trials 2 2025				Tournament George Top Schools 2025
		date 2025-04-12	rnd 9	type Standard	result 1	date 2025-07-26	rnd 3	type Standard	result 0.5
		Opponent Albertyn, A (Aliyah)				Opponent Potts, L (Lyall)
2	3	Tournament Eden Chess Trials 2 2025				Tournament Eden Chess Trials 2 2025
		date 2025-03-15	rnd 5	type Standard	result 1	date 2025-04-12	rnd 7	type Standard	result 0.5
		Opponent Windvogel, K (Klarichane)				Opponent Bruiners, C (Chandre)
3	3	Tournament George Schools Chess Trials 2 2025				Tournament George Schools Chess Trials 3 2025
		date 2025-02-15	rnd 4	type Standard	result 1	date 2025-03-01	rnd 1	type Standard	result 1
		Opponent Booysen, C (Chad)				Opponent Erasmus, R (Ruben)

#	Games	Start				End
1	4	Tournament Eden Chess Trials 2 2025				Tournament George Top Schools 2025
		date 2025-04-12	rnd 9	type Standard	result 1	date 2025-07-26	rnd 3	type Standard	result 0.5
		Opponent Albertyn, A (Aliyah)				Opponent Potts, L (Lyall)
2	3	Tournament Eden Chess Trials 2 2025				Tournament Eden Chess Trials 2 2025
		date 2025-03-15	rnd 5	type Standard	result 1	date 2025-04-12	rnd 7	type Standard	result 0.5
		Opponent Windvogel, K (Klarichane)				Opponent Bruiners, C (Chandre)
3	3	Tournament George Schools Chess Trials 2 2025				Tournament George Schools Chess Trials 3 2025
		date 2025-02-15	rnd 4	type Standard	result 1	date 2025-03-01	rnd 1	type Standard	result 1
		Opponent Booysen, C (Chad)				Opponent Erasmus, R (Ruben)

#	Games	Start				End
1	1	Tournament George Suid Senior Skaaktoernooi 2024				Tournament George Suid Senior Skaaktoernooi 2024
		date 2024-10-26	rnd 5	type Rapid	result 1	date 2024-10-26	rnd 5	type Rapid	result 1
		Opponent Gouws, A (Anja)				Opponent Gouws, A (Anja)
2	1	Tournament George Suid Senior Skaaktoernooi 2024				Tournament George Suid Senior Skaaktoernooi 2024
		date 2024-10-26	rnd 1	type Rapid	result 1	date 2024-10-26	rnd 1	type Rapid	result 1
		Opponent Potts, W (Wade)				Opponent Potts, W (Wade)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament George Schools Chess Trials 2 2025				Tournament George Schools Chess Trials 3 2025
		date 2025-02-15	rnd 4	type Standard	result 1	date 2025-03-01	rnd 1	type Standard	result 1
		Opponent Booysen, C (Chad)				Opponent Erasmus, R (Ruben)
2	2	Tournament George Schools Chess Trials 1 2025				Tournament George Schools Chess Trials 1 2025
		date 2025-02-01	rnd 2	type Standard	result 1	date 2025-02-01	rnd 3	type Standard	result 1
		Opponent De Swardt, C (Christiaan)				Opponent Van Schalkwyk, J (Jevon)
3	1	Tournament George Top Schools 2025				Tournament George Top Schools 2025
		date 2025-07-26	rnd 1	type Standard	result 1	date 2025-07-26	rnd 1	type Standard	result 1
		Opponent Warren, B (Brian)				Opponent Warren, B (Brian)

#	Games	Start				End
1	3	Tournament George Schools Chess Trials 2 2025				Tournament George Schools Chess Trials 3 2025
		date 2025-02-15	rnd 4	type Standard	result 1	date 2025-03-01	rnd 1	type Standard	result 1
		Opponent Booysen, C (Chad)				Opponent Erasmus, R (Ruben)
2	2	Tournament George Schools Chess Trials 1 2025				Tournament George Schools Chess Trials 1 2025
		date 2025-02-01	rnd 2	type Standard	result 1	date 2025-02-01	rnd 3	type Standard	result 1
		Opponent De Swardt, C (Christiaan)				Opponent Van Schalkwyk, J (Jevon)
3	1	Tournament George Top Schools 2025				Tournament George Top Schools 2025
		date 2025-07-26	rnd 1	type Standard	result 1	date 2025-07-26	rnd 1	type Standard	result 1
		Opponent Warren, B (Brian)				Opponent Warren, B (Brian)

#	Games	Start				End
1	1	Tournament George Suid Senior Skaaktoernooi 2024				Tournament George Suid Senior Skaaktoernooi 2024
		date 2024-10-26	rnd 5	type Rapid	result 1	date 2024-10-26	rnd 5	type Rapid	result 1
		Opponent Gouws, A (Anja)				Opponent Gouws, A (Anja)
2	1	Tournament George Suid Senior Skaaktoernooi 2024				Tournament George Suid Senior Skaaktoernooi 2024
		date 2024-10-26	rnd 1	type Rapid	result 1	date 2024-10-26	rnd 1	type Rapid	result 1
		Opponent Potts, W (Wade)				Opponent Potts, W (Wade)

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	Moses ,D (Dominique)	3	0	-425	3	0	-425	0	0	0	0	0	0
1	Moses ,D (Dominique)	3	1443	1018	3	1428.9	1018	0	0	0	0	0	0
2	Steenberg ,H (Hendre)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Steenberg ,H (Hendre)	2	1428.4	1003.4	2	1414.8	1003.4	0	0	0	0	0	0
3	Booysen ,C (Chad)	2	1	0	2	1	0	0	0	0	0	0	0
3	Booysen ,C (Chad)	2	1164.1	1164.1	2	1156.3	1164.1	0	0	0	0	0	0
4	Simon ,R (Riley)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Simon ,R (Riley)	1	1776.6	1351.6	1	1752.8	1351.6	0	0	0	0	0	0
5	Postelnicu ,S (Stephan)	1	1	425	1	1	425	0	0	0	0	0	0
5	Postelnicu ,S (Stephan)	1	1271	1696	1	1253.2	1696	0	0	0	0	0	0
6	Jantjies ,E (Enzaylin)	1	1	425	1	1	425	0	0	0	0	0	0
6	Jantjies ,E (Enzaylin)	1	1199.3	1624.3	1	1199.2	1624.3	0	0	0	0	0	0
7	Warren ,B (Brian)	1	1	425	1	1	425	0	0	0	0	0	0
7	Warren ,B (Brian)	1	1320.7	1745.7	1	1327.3	1745.7	0	0	0	0	0	0
8	Stander ,D (Dean)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Stander ,D (Dean)	1	1470.1	1045.1	1	1464.6	1045.1	0	0	0	0	0	0
9	Booysen ,M (Monray)	1	1	425	1	1	425	0	0	0	0	0	0
9	Booysen ,M (Monray)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Prins ,E (Eddie)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Prins ,E (Eddie)	1	1554.2	1129.2	1	1535.1	1129.2	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

Janse Van Rensburg, J (Jacob)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms