Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jansen Van Rensburg, S (Stefan)

Chess SA id

1090101015

FIDE id

Date of birth

2009-08-13 (U18)

Gender

Male

Region

West Rand (GWR)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-18

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1284.6

Item	Main	Standard	Rapid	Blitz
Rating	1249.9	1254.8	1018.4	1200
Raw rating	1249.9	1254.8	1018.4	1200
Weighted rating	1211.4	1219.6	1018.4	1200
Weighted performance	1234.3	1228.8	0	0
Floor	749.9	754.8	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	154.4	153.4	214.8	165.8
Highest rating	1249.9 2025-11-01	1254.8 2025-11-01	1200 2018-02-01	1200 2018-10-01
Highest raw rating	1249.9 2025-11-01	1254.8 2025-11-01	1200 2018-02-01	1200 2024-02-01
Highest weighted rating	1230.1 2018-02-01	1238.7 2018-08-01	1200 2018-02-01	1200 2018-10-01
Highest weighted performance	1234.3 2025-11-01	1237.6 2018-05-01	1200 2018-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1249.9	1254.8	1018.4	1200
Analysis
Rating	1249.9	1254.8	1018.4	1200
Raw rating	1249.9	1254.8	1018.4	1200
Weighted rating	1211.4	1219.6	1018.4
Weighted performance	1234.3	1228.8	0
K-factor	36	36	36	36
Floor	749.9	754.8	700	700
Max/Min rating change allowed	154.4	153.4	214.8	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	1249.9	1254.8	1018.4	1200
New weighted rating	1216	1223.8	1018.4	1200
New weighted performance	1226.8	1221.4	0	0
Temp new rating	1249.9	1254.8	1018.4	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1249.9	1254.8	1018.4	1200
New K-factor	36	36	36	36
New floor	749.9	754.8	700	700

Item	Main	Standard	Rapid
	0	0	0
	20	20	0
	16	16	0
	14	14	0
	15	15	0
	0	0	0
History	101	91	10

Games since
	Main 36	Standard 36		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	West Rand (GWR)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	3600		1294		127
Male	2766		999		98
U18	568		213		26
U18 Male	468		174		22
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 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	20	10.5	52.5	21.2	1260.4	1281.6
Standard	20	10.5	52.5	21.2	1260.4	1281.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	101	47.5	47.03	-25.2	1167.9	1142.6
Standard	91	46	50.55	4.7	1177.8	1182.4
Rapid	10	1.5	15	-297.5	1077.8	780.3
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1249.9	1254.8	1018.4	1200
2025-09-30	1225.4	1231.4	1018.4	1200
2025-09-01	1225.4	1231.4	1018.4	1200
2025-08-01	1225.4	1231.4	1018.4	1200
2025-07-01	1230.1	1238.7	1018.4	1200
2025-06-01	1230.1	1238.7	1018.4	1200
2025-05-01	1230.1	1238.7	1018.4	1200
2025-04-01	1230.1	1238.7	1018.4	1200
2025-03-01	1230.1	1238.7	1018.4	1200
2025-02-01	1208.1	1218.3	1018.4	1200
2025-01-01	1208.1	1218.3	1018.4	1200
2024-12-01	1208.1	1218.3	1018.4	1200
2024-11-01	1183.2	1191.3	1018.4	1200
2024-10-01	1183.2	1191.3	1018.4	1200
2024-09-01	1183.2	1191.3	1018.4	1200
2024-08-01	1183.2	1191.3	1018.4	1200
2024-07-01	1164.3	1174	1018.4	1200
2024-09-01	1145.7	1157.8	1018.4	1200
2024-05-01	1145.7	1157.8	1018.4	1200
2024-04-01	1145.7	1157.8	1018.4	1200
2024-03-01	1145.7	1157.8	1018.4	1200
2024-02-01	1145.7	1157.8	1018.4	1200
2024-01-01	1145.7	1157.8	1018.4	1200
2023-12-01	1145.7	1157.8	1018.4	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	2025 Gauteng Top Schools Teams (U17)	2025-08-30	2025-08-30	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
2	Paarl Boys' High School Chess Festival 2025 (B)	2025-10-17	2025-10-18	Standard	Cape Winelands (WCW)	6	6	3.5	Yes	Analysis
3	2025 D2 Schools League Finals (U17)	2025-07-26	2025-07-26	Standard	West Rand (GWR)	5	4	2	Yes	Analysis
4	Grey College Team Championship 2025 (B)	2025-02-21	2025-02-22	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Gauteng Top Schools Teams (U17)	2025-08-30	2025-08-30	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
2	Paarl Boys' High School Chess Festival 2025 (B)	2025-10-17	2025-10-18	Standard	Cape Winelands (WCW)	6	6	3.5	Yes	Analysis
3	2025 D2 Schools League Finals (U17)	2025-07-26	2025-07-26	Standard	West Rand (GWR)	5	4	2	Yes	Analysis
4	Grey College Team Championship 2025 (B)	2025-02-21	2025-02-22	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
5	Paarl Boys' High Chess Festival 2024 (C)	2024-10-04	2024-10-05	Standard	Cape Winelands (WCW)	6	6	3.5	Yes	Analysis
6	D2 School League Finals 2024 (U19)	2024-07-20	2024-07-20	Standard	West Rand (GWR)	5	5	2.5	Yes	Analysis
7	FIDE in the West 2024 (Bishops)	2024-06-08	2024-06-08	Standard	West Rand (GWR)	5	5	3	Yes	Analysis
8	2023 Gauteng Top Schools (U15 Mixed)	2023-08-19	2023-08-19	Standard	West Rand (GWR)	5	5	2	Yes	Analysis
9	D2 School League Finals 2023 (U15)	2023-07-22	2023-07-22	Standard	West Rand (GWR)	6	4	1.5	Yes	Analysis
10	2023 West Rand Open (Rooks)	2023-02-04	2023-02-04	Standard	West Rand (GWR)	5	5	2	Yes	Analysis
11	D2 School League Finals 2022 (U13)	2022-08-20	2022-08-20	Standard	West Rand (GWR)	5	5	5	Yes	Analysis
12	2022 Gauteng Schools Team Championships (U13 Open)	2022-08-27	2022-08-27	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
13	West Rand Juniors 2022 (U14)	2022-04-09	2022-04-09	Standard	West Rand (GWR)	5	5	2	Yes	Analysis
14	D2 League Finals 2019 (U11)	2019-08-03	2019-08-03	Standard	West Rand (GWR)	7	6	3	Yes	Analysis
15	2019 Gauteng School League Finals (U11 Open)	2019-08-23	2019-08-23	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
16	2019 Super 12 Laerskole (Juniors)	2019-05-04	2019-05-04	Rapid	Tshwane (GTP)	5	5	1	Yes	Analysis
17	D2 Schools Individuals 2019 (U11)	2019-05-18	2019-05-18	Standard	West Rand (GWR)	5	5	3	Yes	Analysis
18	2018 Gauteng League Final (U9)	2018-08-24	2018-08-24	Standard	Tshwane (GTP)	5	5	1.5	Yes	Analysis
19	2018 Super 12 (Junior)	2018-05-05	2018-05-05	Rapid	Tshwane (GTP)	5	5	0.5	Yes	Analysis
20	D2 Schools Individuals 2018 (U9 Open)	2018-05-19	2018-05-19	Standard	Johannesburg Metro (GJM)	5	5	3.5	Yes	Analysis

#	Games	Start				End
1	5	Tournament FIDE in the West 2024				Tournament D2 School League Finals 2024
		date 2024-06-08	rnd 3	type Standard	result 1	date 2024-07-20	rnd 2	type Standard	result 0.5
		Opponent Fisher, J (Jeriah)				Opponent Nzama, SJ (Sfiso Jabulani)
2	5	Tournament D2 School League Finals 2022				Tournament D2 School League Finals 2022
		date 2022-08-20	rnd 1	type Standard	result 1	date 2022-08-20	rnd 5	type Standard	result 1
		Opponent Memane, L (Lisa)				Opponent Smyth, K (Kiara)
3	5	Tournament D2 Schools Individuals 2018				Tournament 2018 Gauteng League Final
		date 2018-05-19	rnd 2	type Standard	result 1	date 2018-08-24	rnd 1	type Standard	result 1
		Opponent Pretorius, Z (Zian)				Opponent Moyo, NJ (Ntokozo Johnny)

#	Games	Start				End
1	5	Tournament FIDE in the West 2024				Tournament D2 School League Finals 2024
		date 2024-06-08	rnd 3	type Standard	result 1	date 2024-07-20	rnd 2	type Standard	result 0.5
		Opponent Fisher, J (Jeriah)				Opponent Nzama, SJ (Sfiso Jabulani)
2	5	Tournament D2 School League Finals 2022				Tournament D2 School League Finals 2022
		date 2022-08-20	rnd 1	type Standard	result 1	date 2022-08-20	rnd 5	type Standard	result 1
		Opponent Memane, L (Lisa)				Opponent Smyth, K (Kiara)
3	5	Tournament D2 Schools Individuals 2018				Tournament 2018 Gauteng League Final
		date 2018-05-19	rnd 2	type Standard	result 1	date 2018-08-24	rnd 1	type Standard	result 1
		Opponent Pretorius, Z (Zian)				Opponent Moyo, NJ (Ntokozo Johnny)

#	Games	Start				End
1	1	Tournament 2019 Super 12 Laerskole				Tournament 2019 Super 12 Laerskole
		date 2019-05-04	rnd 5	type Rapid	result 1	date 2019-05-04	rnd 5	type Rapid	result 1
		Opponent Van Der Merwe, D (Divan)				Opponent Van Der Merwe, D (Divan)
2	1	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 4	type Rapid	result 0.5	date 2018-05-05	rnd 4	type Rapid	result 0.5
		Opponent Van Zyl, A (Anjanka)				Opponent Van Zyl, A (Anjanka)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament D2 School League Finals 2022				Tournament D2 School League Finals 2022
		date 2022-08-20	rnd 1	type Standard	result 1	date 2022-08-20	rnd 5	type Standard	result 1
		Opponent Memane, L (Lisa)				Opponent Smyth, K (Kiara)
2	4	Tournament FIDE in the West 2024				Tournament D2 School League Finals 2024
		date 2024-06-08	rnd 3	type Standard	result 1	date 2024-07-20	rnd 1	type Standard	result 1
		Opponent Fisher, J (Jeriah)				Opponent Ngobeni, N (Ntumbuluko)
3	3	Tournament D2 School League Finals 2024				Tournament Paarl Boys' High Chess Festival 2024
		date 2024-07-20	rnd 5	type Standard	result 1	date 2024-10-04	rnd 2	type Standard	result 1
		Opponent Macfarlane, A (Assien)				Opponent Du Plessis, M (Matthys Armand)

#	Games	Start				End
1	5	Tournament D2 School League Finals 2022				Tournament D2 School League Finals 2022
		date 2022-08-20	rnd 1	type Standard	result 1	date 2022-08-20	rnd 5	type Standard	result 1
		Opponent Memane, L (Lisa)				Opponent Smyth, K (Kiara)
2	4	Tournament FIDE in the West 2024				Tournament D2 School League Finals 2024
		date 2024-06-08	rnd 3	type Standard	result 1	date 2024-07-20	rnd 1	type Standard	result 1
		Opponent Fisher, J (Jeriah)				Opponent Ngobeni, N (Ntumbuluko)
3	3	Tournament D2 School League Finals 2024				Tournament Paarl Boys' High Chess Festival 2024
		date 2024-07-20	rnd 5	type Standard	result 1	date 2024-10-04	rnd 2	type Standard	result 1
		Opponent Macfarlane, A (Assien)				Opponent Du Plessis, M (Matthys Armand)

#	Games	Start				End
1	1	Tournament 2019 Super 12 Laerskole				Tournament 2019 Super 12 Laerskole
		date 2019-05-04	rnd 5	type Rapid	result 1	date 2019-05-04	rnd 5	type Rapid	result 1
		Opponent Van Der Merwe, D (Divan)				Opponent Van Der Merwe, D (Divan)

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	Peach ,A (Alex)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
1	Peach ,A (Alex)	3	587.3	445.6	3	604.1	445.6	0	0	0	0	0	0
2	Kruger ,D (Drickus)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Kruger ,D (Drickus)	2	800.9	375.9	2	834.6	375.9	0	0	0	0	0	0
3	Buthelezi ,N (Nkanyiso)	2	2	425	2	2	425	0	0	0	0	0	0
3	Buthelezi ,N (Nkanyiso)	2	1186.2	1611.2	2	1185.2	1611.2	0	0	0	0	0	0
4	Mbasane ,D (David)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Mbasane ,D (David)	2	1145.5	720.5	2	1137.6	720.5	0	0	0	0	0	0
5	Mare ,J (Jonathan)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
5	Mare ,J (Jonathan)	2	1200	1412.5	2	1200	1412.5	0	0	0	0	0	0
6	Humane ,NP (Noziphiwo)	2	1	0	2	1	0	0	0	0	0	0	0
6	Humane ,NP (Noziphiwo)	2	1196.2	1196.2	2	1186	1196.2	0	0	0	0	0	0
7	Huisamen ,D (De Villiers)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Huisamen ,D (De Villiers)	1	1251.9	826.9	1	1281.3	826.9	0	0	0	0	0	0
8	Smyth ,K (Kiara)	1	1	425	1	1	425	0	0	0	0	0	0
8	Smyth ,K (Kiara)	1	1171.5	1596.5	1	1166.4	1596.5	0	0	0	0	0	0
9	Songo ,B (Blessing)	1	1	425	1	1	425	0	0	0	0	0	0
9	Songo ,B (Blessing)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Saaiman ,HF (Henri Frederik)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
10	Saaiman ,HF (Henri Frederik)	1	1200	1200	1	1200	1200	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Jansen Van Rensburg, S (Stefan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms