Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jansen van Rensburg, J (Janco)

Chess SA id

1170317768

FIDE id

Date of birth

2017-06-28 (U10)

Gender

Male

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-26

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1183.9	1195.6	1165.5	1200
Raw rating	1121	1160.4	1080.5	1200
Weighted rating	1183.9	1195.6	1165.5	1200
Weighted performance	1022.7	1095.2	0	0
Floor	730.2	736.3	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	185.6	175.4	196.6	165.8
Highest rating	1230.2 2025-04-01	1236.3 2025-04-01	1200 2025-04-01	1200 2025-04-01
Highest raw rating	1230.2 2025-04-01	1236.3 2025-04-01	1200 2025-04-01	1200 2025-04-01
Highest weighted rating	1230.2 2025-06-01	1236.3 2025-06-01	1200 2025-04-01	1200 2025-04-01
Highest weighted performance	1162.5 2025-09-01	1159 2025-09-01	0 1900-01-01	0 1900-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-5.7	-3.1	-8	0
New rating	1178.1	1192.5	1157.5	1200
Analysis
Rating	1183.9	1195.6	1165.5	1200
Raw rating	1121	1160.4	1080.5	1200
Weighted rating	1183.9	1195.6	1165.5
Weighted performance	1022.7	1095.2	0
K-factor	36	36	36	36
Floor	730.2	736.3	700	700
Max/Min rating change allowed	185.6	175.4	196.6	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	1121	1160.4	1080.5	1200
New weighted rating	1178.1	1192.5	1157.5	1200
New weighted performance	1015.8	1087.7	0	0
Temp new rating	1178.1	1192.5	1157.5	1200
Temp new rating +/-	-5.7	-3.1	-8	0
Final new rating +/-	-5.7	-3.1	-8	0
New rating	1178.1	1192.5	1157.5	1200
New K-factor	36	36	36	36
New floor	730.2	736.3	700	700

Item	Main	Standard	Rapid
	0	0	0
	52	35	17
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	52	35	17

Games since
	Main 52	Standard 35		Rapid 17		Blitz 0
Gender	Male
Age group	U10
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	4216		1364		230
Male	3138		1024		164
U10	409		140		20
U10 Male	305		116		17
Standard
	RSA		Province		Region
Overall	4088		1456		205
Male	3059		1103		154
U10	387		155		18
U10 Male	295		130		16
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 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	52	19.5	37.5	-106.2	1260.6	1154.3
Standard	35	14.5	41.43	-72.9	1251.2	1178.4
Rapid	17	5	29.41	-175	1279.8	1104.8
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	52	19.5	37.5	-106.2	1260.6	1154.3
Standard	35	14.5	41.43	-72.9	1251.2	1178.4
Rapid	17	5	29.41	-175	1279.8	1104.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1121	1160.4	1080.5	1200
2025-11-30	1121	1160.4	1080.5	1200
2025-11-01	1121	1160.4	1080.5	1200
2025-09-30	1134.6	1160.4	1099.9	1200
2025-09-01	1222.7	1226.6	1200	1200
2025-08-01	1206.5	1207.4	1200	1200
2025-07-01	1205.2	1205.5	1200	1200
2025-06-01	1222	1221.1	1200	1200
2025-05-01	1230.2	1236.3	1200	1200
2025-04-01	1230.2	1236.3	1200	1200
2025-03-01	1200	1200	1200	1200
2025-02-01	1200	1200	1200	1200
2025-01-01	1200	1200	1200	1200
2024-12-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-10-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-06-01	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

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	2025 Super 8 (Junior)	2025-09-26	2025-09-26	Rapid	Ekurhuleni (GE)	5	5	2	Yes	Analysis
2	East Rand Chess Club Open 2025 (D)	2025-08-09	2025-08-09	Standard	Ekurhuleni (GE)	5	5	1	Yes	Analysis
3	East Rand Chess Club Open 2025 (D)	2025-08-09	2025-08-09	Standard	Ekurhuleni (GE)	5	5	1	Yes	Analysis
4	East Rand Chess Club 2025 (D)	2025-09-06	2025-09-06	Rapid	Ekurhuleni (GE)	5	4	0.5	Yes	Analysis
5	East Rand Chess Club 2025 (D)	2025-09-06	2025-09-06	Rapid	Ekurhuleni (GE)	5	4	0.5	Yes	Analysis
6	Ekurhuleni North Schools Teams 2025 (U9)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
7	Edenvale Germiston Cluster Teams 2025 (U9)	2025-07-25	2025-07-25	Rapid	Ekurhuleni (GE)	6	4	2	Yes	Analysis
8	Ekurhuleni North School District Finals 2025 (U9 Boys)	2025-06-14	2025-06-14	Standard	Ekurhuleni (GE)	5	5	1.5	Yes	Analysis
9	CPH May 2025 (E)	2025-05-03	2025-05-03	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
10	Chess Power House March Open 2025 (E)	2025-03-22	2025-03-22	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
11	Edenvale Germiston Cluster 2025 (U9 Boys)	2025-03-08	2025-03-08	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis

#	Games	Start				End
1	5	Tournament Edenvale Germiston Cluster 2025				Tournament Edenvale Germiston Cluster 2025
		date 2025-03-08	rnd 1	type Standard	result 1	date 2025-03-08	rnd 5	type Standard	result 0.5
		Opponent Ntsibande, W (Wanga)				Opponent Strydom, Z (Zachary)
2	4	Tournament Ekurhuleni North School District Finals 2025				Tournament Edenvale Germiston Cluster Teams 2025
		date 2025-06-14	rnd 4	type Standard	result 1	date 2025-07-25	rnd 2	type Rapid	result 1
		Opponent Coetzee, K (Kylo)				Opponent Coetzee, L (Logan)
3	3	Tournament Chess Power House March Open 2025				Tournament CPH May 2025
		date 2025-03-22	rnd 4	type Standard	result 1	date 2025-05-03	rnd 1	type Standard	result 1
		Opponent Gottumukkala, M (Maanvi)				Opponent Ji, Y (Yufei)

#	Games	Start				End
1	5	Tournament Edenvale Germiston Cluster 2025				Tournament Edenvale Germiston Cluster 2025
		date 2025-03-08	rnd 1	type Standard	result 1	date 2025-03-08	rnd 5	type Standard	result 0.5
		Opponent Ntsibande, W (Wanga)				Opponent Strydom, Z (Zachary)
2	3	Tournament Chess Power House March Open 2025				Tournament CPH May 2025
		date 2025-03-22	rnd 4	type Standard	result 1	date 2025-05-03	rnd 1	type Standard	result 1
		Opponent Gottumukkala, M (Maanvi)				Opponent Ji, Y (Yufei)
3	2	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 1	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent van der Westhuizen, G (Gabriel)				Opponent Thabethe, S (Simphiwe)

#	Games	Start				End
1	2	Tournament Edenvale Germiston Cluster Teams 2025				Tournament Edenvale Germiston Cluster Teams 2025
		date 2025-07-25	rnd 1	type Rapid	result 1	date 2025-07-25	rnd 2	type Rapid	result 1
		Opponent Rammutla, K (Kitso)				Opponent Coetzee, L (Logan)
2	1	Tournament East Rand Chess Club 2025				Tournament East Rand Chess Club 2025
		date 2025-09-06	rnd 1	type Rapid	result 0.5	date 2025-09-06	rnd 1	type Rapid	result 0.5
		Opponent Mabaso, A (Anathi)				Opponent Mabaso, A (Anathi)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Chess Power House March Open 2025				Tournament CPH May 2025
		date 2025-03-22	rnd 4	type Standard	result 1	date 2025-05-03	rnd 1	type Standard	result 1
		Opponent Gottumukkala, M (Maanvi)				Opponent Ji, Y (Yufei)
2	3	Tournament Edenvale Germiston Cluster 2025				Tournament Edenvale Germiston Cluster 2025
		date 2025-03-08	rnd 1	type Standard	result 1	date 2025-03-08	rnd 3	type Standard	result 1
		Opponent Ntsibande, W (Wanga)				Opponent Coetzee, K (Kylo)
3	2	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 1	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent van der Westhuizen, G (Gabriel)				Opponent Thabethe, S (Simphiwe)

#	Games	Start				End
1	3	Tournament Chess Power House March Open 2025				Tournament CPH May 2025
		date 2025-03-22	rnd 4	type Standard	result 1	date 2025-05-03	rnd 1	type Standard	result 1
		Opponent Gottumukkala, M (Maanvi)				Opponent Ji, Y (Yufei)
2	3	Tournament Edenvale Germiston Cluster 2025				Tournament Edenvale Germiston Cluster 2025
		date 2025-03-08	rnd 1	type Standard	result 1	date 2025-03-08	rnd 3	type Standard	result 1
		Opponent Ntsibande, W (Wanga)				Opponent Coetzee, K (Kylo)
3	2	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 1	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent van der Westhuizen, G (Gabriel)				Opponent Thabethe, S (Simphiwe)

#	Games	Start				End
1	2	Tournament Edenvale Germiston Cluster Teams 2025				Tournament Edenvale Germiston Cluster Teams 2025
		date 2025-07-25	rnd 1	type Rapid	result 1	date 2025-07-25	rnd 2	type Rapid	result 1
		Opponent Rammutla, K (Kitso)				Opponent Coetzee, L (Logan)

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	Robinson ,L (LXR)	5	0.5	-340	3	0.5	-283.3	2	0	-425	0	0	0
1	Robinson ,L (LXR)	5	1268.3	928.3	3	1223.5	985	2	1200	843.3	0	0	0
2	Mendonca ,M (Mark)	4	0	-425	2	0	-425	2	0	-425	0	0	0
2	Mendonca ,M (Mark)	4	1590	1165	2	1590.6	1165	2	1254.9	1165	0	0	0
3	Coetzee ,L (Logan)	3	2	141.7	1	1	425	2	1	0	0	0	0
3	Coetzee ,L (Logan)	3	1200	1341.7	1	1200	1625	2	1200	1200	0	0	0
4	Saunders ,J (Jaiden)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Saunders ,J (Jaiden)	2	1205.9	780.9	2	1210.3	780.9	0	0	0	0	0	0
5	Nakene ,P (Pako)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Nakene ,P (Pako)	2	1200	775	2	1200	775	0	0	0	0	0	0
6	Madi ,O (Okuhle)	2	2	425	2	2	425	0	0	0	0	0	0
6	Madi ,O (Okuhle)	2	1199.4	1624.4	2	1199.3	1624.4	0	0	0	0	0	0
7	Coetzee ,K (Kylo)	2	2	425	2	2	425	0	0	0	0	0	0
7	Coetzee ,K (Kylo)	2	1200	1625	2	1200	1625	0	0	0	0	0	0
8	Gabel Smit ,H (Heinrich)	2	0	-425	2	0	-425	0	0	0	0	0	0
8	Gabel Smit ,H (Heinrich)	2	1457.9	1032.9	2	1472.9	1032.9	0	0	0	0	0	0
9	Van Niekerk ,Z (Zayden)	2	1	0	2	1	0	0	0	0	0	0	0
9	Van Niekerk ,Z (Zayden)	2	1199.9	1199.9	2	1199.8	1199.9	0	0	0	0	0	0
10	Rammutla ,K (Kitso)	2	1	0	0	0	0	2	1	0	0	0	0
10	Rammutla ,K (Kitso)	2	1200	1200	0	0	0	2	1200	1200	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Jansen van Rensburg, 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