Chess South Africa Ratings Database

PLAYER PAGE

Personal

Marais, J (Janike)

Chess SA id

2100133964

FIDE id

Date of birth

2010-06-29 (U16)

Gender

Female

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-16

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1164.5

Item	Main	Standard	Rapid	Blitz
Rating	1258.7	1234.8	1296.2	1168.4
Raw rating	1254.3	1207.7	1296.2	1168.4
Weighted rating	1258.7	1234.8	1277.6	1168.4
Weighted performance	1113.5	1061	0	0
Floor	796	785.7	796.2	700
K-factor	36	36	36	36
Min/Max rating change allowed	153.5	164	144.6	173.5
Highest rating	1298.5 2024-07-01	1285.7 2024-06-01	1490.2 2022-05-01	1200 2018-10-01
Highest raw rating	1296 2024-06-01	1285.7 2024-06-01	1296.2 2025-09-01	1200 2019-12-01
Highest weighted rating	1296 2024-09-01	1285.7 2024-09-01	1278 2025-06-01	1200 2018-10-01
Highest weighted performance	1298.5 2024-07-01	1265.6 2023-06-01	1490.2 2022-05-01	1200 2019-12-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.6	-2.8	0	0
New rating	1258.1	1232	1296.2	1168.4
Analysis
Rating	1258.7	1234.8	1296.2	1168.4
Raw rating	1254.3	1207.7	1296.2	1168.4
Weighted rating	1258.7	1234.8	1277.6
Weighted performance	1113.5	1061	0
K-factor	36	36	36	36
Floor	796	785.7	796.2	700
Max/Min rating change allowed	153.5	164	144.6	173.5
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	1254.3	1207.7	1296.2	1168.4
New weighted rating	1258.1	1232	1279.3	1168.4
New weighted performance	1113.1	1060.6	0	0
Temp new rating	1258.1	1232	1296.2	1168.4
Temp new rating +/-	-0.6	-2.8	0	0
Final new rating +/-	-0.6	-2.8	0	0
New rating	1258.1	1232	1296.2	1168.4
New K-factor	36	36	36	36
New floor	796	785.7	796.2	700

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	17	9	8	0
	30	22	8	0
	20	15	5	0
	57	44	6	7
	14	14	0	0
History	138	104	27	7

Games since
	Main 47	Standard 31		Rapid 16		Blitz 0
Gender	Female
Age group	U16
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	3544		1155		185
Female	783		245		46
U16	571		184		34
U16 Female	164		57		13
Standard
	RSA		Province		Region
Overall	3652		1293		177
Female	845		286		42
U16	602		209		36
U16 Female	172		62		12
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-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	17	7.5	44.12	-50	1298.3	1248.3
Standard	9	2.5	27.78	-188.9	1333.3	1144.4
Rapid	8	5	62.5	106.2	1258.9	1365.2
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	138	70	50.72	6.2	1228.4	1234.6
Standard	104	49	47.12	-24.5	1227.3	1202.8
Rapid	27	18	66.67	141.7	1225.5	1367.1
Blitz	7	3	42.86	-60.7	1257.1	1196.4

Date	Main	Standard	Rapid	Blitz
2025-09-30	1254.3	1207.7	1296.2	1168.4
2025-09-01	1254.3	1207.7	1296.2	1168.4
2025-08-01	1262.1	1241.3	1273.7	1168.4
2025-07-01	1262.1	1241.3	1273.1	1168.4
2025-06-01	1259.4	1241.1	1275.5	1168.4
2025-05-01	1260.4	1242.7	1275.5	1168.4
2025-04-01	1260.4	1242.7	1275.5	1168.4
2025-03-01	1260.2	1242.7	1275.5	1168.4
2025-02-01	1258.4	1240.6	1275.5	1168.4
2025-01-01	1240.3	1214.1	1275.5	1168.4
2024-12-01	1223.4	1192.1	1275.5	1168.4
2024-11-01	1223.4	1192.1	1275.5	1168.4
2024-10-01	1223.4	1192.1	1275.5	1168.4
2024-09-01	1294.5	1278.1	1275.5	1168.4
2024-08-01	1294.5	1278.1	1275.5	1168.4
2024-07-01	1286.9	1278.1	1271.5	1168.4
2024-06-01	1296	1285.7	1271.5	1168.4
2024-08-01	1276.3	1256.9	1271.5	1168.4
2024-04-01	1276.3	1256.9	1271.5	1168.4
2024-03-01	1263.8	1256.9	1266.1	1168.4
2024-02-01	1263.8	1256.9	1266.1	1168.4
2024-01-01	1263.8	1256.9	1266.1	1168.4
2023-12-01	1263.8	1256.9	1266.1	1168.4
2023-11-01	1263.8	1256.9	1266.1	1168.4

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	Ekurhuleni North Schools Teams 2025 (U17 Open)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	5	1	Yes	Analysis
2	Kempton Park Team Clusters LS 2025 (High Schools)	2025-07-26	2025-07-26	Rapid	Ekurhuleni (GE)	4	4	3	Yes	Analysis
3	Kemptonpark School Cluster 2025 (U15)	2025-06-07	2025-06-07	Rapid	Ekurhuleni (GE)	5	4	2	Yes	Analysis
4	Ekurhuleni Trials 2025 (D)	2025-05-24	2025-05-24	Standard	Ekurhuleni (GE)	5	4	1.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Ekurhuleni North Schools Teams 2025 (U17 Open)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	5	1	Yes	Analysis
2	Kempton Park Team Clusters LS 2025 (High Schools)	2025-07-26	2025-07-26	Rapid	Ekurhuleni (GE)	4	4	3	Yes	Analysis
3	Kemptonpark School Cluster 2025 (U15)	2025-06-07	2025-06-07	Rapid	Ekurhuleni (GE)	5	4	2	Yes	Analysis
4	Ekurhuleni Trials 2025 (D)	2025-05-24	2025-05-24	Standard	Ekurhuleni (GE)	5	4	1.5	Yes	Analysis
5	Gauteng Inter-Region at UJ 2024 (U16+U18 Girls)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
6	Ekurhuleni North Schools Finals - Teams 2024 (U15 Open)	2024-08-03	2024-08-03	Standard	Ekurhuleni (GE)	5	4	0	Yes	Analysis
7	Ekurhuleni Trails 3 2024 (U16)	2024-08-24	2024-08-24	Standard	Ekurhuleni (GE)	5	3	1	Yes	Analysis
8	Kempton Park Cluster Teams 2024 (U15)	2024-07-13	2024-07-13	Rapid	Ekurhuleni (GE)	3	3	2	Yes	Analysis
9	Ekurhuleni Trails 1 2024 (U16)	2024-06-01	2024-06-01	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
10	Ekurhuleni North High School Individuals 2024 (U15 Girls)	2024-05-18	2024-05-18	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
11	Kempton Park Cluster Individuals 2024 (U15+U18 Girls)	2024-03-02	2024-03-02	Rapid	Ekurhuleni (GE)	5	5	3	Yes	Analysis
12	Ekurhuleni Chess Trial 3 2023 (U14)	2023-06-17	2023-06-17	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
13	Gauteng Open Arnold Classic 2023 (U16)	2023-05-19	2023-05-19	Rapid	Tshwane (GTP)	5	5	3	Yes	Analysis
14	Ekurhuleni North Schools Individual Finals 2023 (U13 Girls)	2023-05-12	2023-05-12	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
15	Ekurhuleni Trials 2 2023 (U14)	2023-04-22	2023-04-22	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
16	2022 South African Junior Team Chess Championships (U14-U18 Girls)	2022-12-04	2022-12-08	Standard	4 Knights (4K)	7	6	1	Yes	Analysis
17	2022 South Africa Junior Blitz Chess Championships (U14)	2022-12-05	2022-12-05	Blitz	4 Knights (4K)	7	7	3	Yes	Analysis
18	ACB Tournament 2022 (C)	2022-10-08	2022-10-08	Standard	Ekurhuleni (GE)	5	4	2	Yes	Analysis
19	2022 Gauteng Schools Team Championships (U13 Open)	2022-08-27	2022-08-27	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
20	Ekurhuleni-North Schools Teams 2022 (U13)	2022-08-06	2022-08-06	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
21	RMS Swiss For Rating of Players 2022 (U13)	2022-05-28	2022-05-28	Rapid	Ekurhuleni (GE)	7	6	5	Yes	Analysis
22	Ekurhuleni-North Schools Finals Indiv 2022 (U13 Girls)	2022-05-13	2022-05-13	Standard	Ekurhuleni (GE)	5	4	3	Yes	Analysis
23	Ekurhuleni Trials 1 2022 (U14)	2022-04-23	2022-04-23	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
24	ACB Premier 2022 (Primary School)	2022-03-19	2022-03-19	Standard	Ekurhuleni (GE)	5	5	3.5	Yes	Analysis
25	ACB Premier 2022 (U13)	2022-03-21	2022-03-21	Standard	Ekurhuleni (GE)	7	5	2.5	Yes	Analysis
26	2022 Gauteng Interregion (U12 Open)	2022-02-26	2022-02-26	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
27	Ekurhuleni Trials (3)	2021-11-06	2021-11-06	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
28	Ekurhuleni North Schools Individual 2021 (D)	2021-09-11	2021-09-11	Standard	Ekurhuleni (GE)	5	4	2	Yes	Analysis
29	Ekurhuleni Chess Chessa Open 2021 (C)	2021-03-27	2021-03-27	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis

#	Games	Start				End
1	5	Tournament RMS Swiss For Rating of Players 2022				Tournament RMS Swiss For Rating of Players 2022
		date 2022-05-28	rnd 3	type Rapid	result 1	date 2022-05-28	rnd 7	type Rapid	result 1
		Opponent Jacobs, R (Rico)				Opponent Du Preez, J (Juan)
2	4	Tournament Ekurhuleni Trails 1 2024				Tournament Kempton Park Cluster Teams 2024
		date 2024-06-01	rnd 4	type Standard	result 1	date 2024-07-13	rnd 2	type Rapid	result 1
		Opponent Bennett, J (Jemmah)				Opponent Ramasike, K (Kgosi-Etsile)
3	3	Tournament Kempton Park Cluster Individuals 2024				Tournament Kempton Park Cluster Individuals 2024
		date 2024-03-02	rnd 2	type Rapid	result 1	date 2024-03-02	rnd 4	type Rapid	result 1
		Opponent Strydom, L (Leandri)				Opponent Nel, Z (Zonika)

#	Games	Start				End
1	5	Tournament Ekurhuleni Chess Trial 3 2023				Tournament Ekurhuleni North High School Individuals 2024
		date 2023-06-17	rnd 3	type Standard	result 1	date 2024-05-18	rnd 2	type Standard	result 1
		Opponent Myburgh, M (Melinda)				Opponent Rammutla, L (Lebogang)
2	3	Tournament Ekurhuleni Trials 2 2023				Tournament Ekurhuleni North Schools Individual Finals 2023
		date 2023-04-22	rnd 5	type Standard	result 1	date 2023-05-12	rnd 2	type Standard	result 1
		Opponent Maponga, T (Tayana)				Opponent Fritz, L (Lucy)
3	3	Tournament ACB Premier 2022				Tournament ACB Premier 2022
		date 2022-03-19	rnd 4	type Standard	result 1	date 2022-03-21	rnd 1	type Standard	result 1
		Opponent Hlongwa, D (Dimakatso)				Opponent Mashabane, Z (Zakariah)

#	Games	Start				End
1	5	Tournament RMS Swiss For Rating of Players 2022				Tournament RMS Swiss For Rating of Players 2022
		date 2022-05-28	rnd 3	type Rapid	result 1	date 2022-05-28	rnd 7	type Rapid	result 1
		Opponent Jacobs, R (Rico)				Opponent Du Preez, J (Juan)
2	3	Tournament Kempton Park Cluster Individuals 2024				Tournament Kempton Park Cluster Individuals 2024
		date 2024-03-02	rnd 2	type Rapid	result 1	date 2024-03-02	rnd 4	type Rapid	result 1
		Opponent Strydom, L (Leandri)				Opponent Nel, Z (Zonika)
3	3	Tournament Gauteng Open Arnold Classic 2023				Tournament Gauteng Open Arnold Classic 2023
		date 2023-05-19	rnd 2	type Rapid	result 1	date 2023-05-19	rnd 4	type Rapid	result 1
		Opponent Lepedi, J (John)				Opponent Pillay, A (Angelique)

#	Games	Start				End
1	1	Tournament 2022 South Africa Junior Blitz Chess Championships				Tournament 2022 South Africa Junior Blitz Chess Championships
		date 2022-12-05	rnd 6	type Blitz	result 1	date 2022-12-05	rnd 6	type Blitz	result 1
		Opponent Hough, C (Cameron)				Opponent Hough, C (Cameron)
2	1	Tournament 2022 South Africa Junior Blitz Chess Championships				Tournament 2022 South Africa Junior Blitz Chess Championships
		date 2022-12-05	rnd 4	type Blitz	result 1	date 2022-12-05	rnd 4	type Blitz	result 1
		Opponent Allen, J (Julia)				Opponent Allen, J (Julia)
3	1	Tournament 2022 South Africa Junior Blitz Chess Championships				Tournament 2022 South Africa Junior Blitz Chess Championships
		date 2022-12-05	rnd 2	type Blitz	result 1	date 2022-12-05	rnd 2	type Blitz	result 1
		Opponent Boucher, R (Ryann)				Opponent Boucher, R (Ryann)

#	Games	Start				End
1	5	Tournament RMS Swiss For Rating of Players 2022				Tournament RMS Swiss For Rating of Players 2022
		date 2022-05-28	rnd 3	type Rapid	result 1	date 2022-05-28	rnd 7	type Rapid	result 1
		Opponent Jacobs, R (Rico)				Opponent Du Preez, J (Juan)
2	4	Tournament Ekurhuleni Trails 1 2024				Tournament Kempton Park Cluster Teams 2024
		date 2024-06-01	rnd 4	type Standard	result 1	date 2024-07-13	rnd 2	type Rapid	result 1
		Opponent Bennett, J (Jemmah)				Opponent Ramasike, K (Kgosi-Etsile)
3	3	Tournament Kempton Park Cluster Individuals 2024				Tournament Kempton Park Cluster Individuals 2024
		date 2024-03-02	rnd 2	type Rapid	result 1	date 2024-03-02	rnd 4	type Rapid	result 1
		Opponent Strydom, L (Leandri)				Opponent Nel, Z (Zonika)

#	Games	Start				End
1	5	Tournament Ekurhuleni Chess Trial 3 2023				Tournament Ekurhuleni North High School Individuals 2024
		date 2023-06-17	rnd 3	type Standard	result 1	date 2024-05-18	rnd 2	type Standard	result 1
		Opponent Myburgh, M (Melinda)				Opponent Rammutla, L (Lebogang)
2	3	Tournament Ekurhuleni Trials 2 2023				Tournament Ekurhuleni North Schools Individual Finals 2023
		date 2023-04-22	rnd 5	type Standard	result 1	date 2023-05-12	rnd 2	type Standard	result 1
		Opponent Maponga, T (Tayana)				Opponent Fritz, L (Lucy)
3	3	Tournament Ekurhuleni North Schools Individual 2021				Tournament Ekurhuleni Trials
		date 2021-09-11	rnd 4	type Standard	result 1	date 2021-11-06	rnd 1	type Standard	result 1
		Opponent Pillman, L (Lana)				Opponent Huebsch, K (Kaleigh)

#	Games	Start				End
1	5	Tournament RMS Swiss For Rating of Players 2022				Tournament RMS Swiss For Rating of Players 2022
		date 2022-05-28	rnd 3	type Rapid	result 1	date 2022-05-28	rnd 7	type Rapid	result 1
		Opponent Jacobs, R (Rico)				Opponent Du Preez, J (Juan)
2	3	Tournament Kempton Park Cluster Individuals 2024				Tournament Kempton Park Cluster Individuals 2024
		date 2024-03-02	rnd 2	type Rapid	result 1	date 2024-03-02	rnd 4	type Rapid	result 1
		Opponent Strydom, L (Leandri)				Opponent Nel, Z (Zonika)
3	3	Tournament Gauteng Open Arnold Classic 2023				Tournament Gauteng Open Arnold Classic 2023
		date 2023-05-19	rnd 2	type Rapid	result 1	date 2023-05-19	rnd 4	type Rapid	result 1
		Opponent Lepedi, J (John)				Opponent Pillay, A (Angelique)

#	Games	Start				End
1	1	Tournament 2022 South Africa Junior Blitz Chess Championships				Tournament 2022 South Africa Junior Blitz Chess Championships
		date 2022-12-05	rnd 6	type Blitz	result 1	date 2022-12-05	rnd 6	type Blitz	result 1
		Opponent Hough, C (Cameron)				Opponent Hough, C (Cameron)
2	1	Tournament 2022 South Africa Junior Blitz Chess Championships				Tournament 2022 South Africa Junior Blitz Chess Championships
		date 2022-12-05	rnd 4	type Blitz	result 1	date 2022-12-05	rnd 4	type Blitz	result 1
		Opponent Allen, J (Julia)				Opponent Allen, J (Julia)
3	1	Tournament 2022 South Africa Junior Blitz Chess Championships				Tournament 2022 South Africa Junior Blitz Chess Championships
		date 2022-12-05	rnd 2	type Blitz	result 1	date 2022-12-05	rnd 2	type Blitz	result 1
		Opponent Boucher, R (Ryann)				Opponent Boucher, R (Ryann)

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	Bothma ,J (Jaculene)	4	1	-212.5	4	1	-212.5	0	0	0	0	0	0
1	Bothma ,J (Jaculene)	4	1191.1	978.6	4	1183.5	978.6	0	0	0	0	0	0
2	Sebogoane ,T (Thoriso)	3	0	-425	3	0	-425	0	0	0	0	0	0
2	Sebogoane ,T (Thoriso)	3	1361.2	936.2	3	1350.5	936.2	0	0	0	0	0	0
3	Sibabyoni ,N (Nonhle)	2	1	0	2	1	0	0	0	0	0	0	0
3	Sibabyoni ,N (Nonhle)	2	1200	1200	2	1200	1200	0	0	0	0	0	0
4	Abbott ,J (Janco)	2	1	0	2	1	0	0	0	0	0	0	0
4	Abbott ,J (Janco)	2	1215.2	1215.2	2	1217.1	1215.2	0	0	0	0	0	0
5	Pitzer ,E (Emuel)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Pitzer ,E (Emuel)	2	1135.5	710.5	2	1141.2	710.5	0	0	0	0	0	0
6	Lovett ,S (Saffron)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Lovett ,S (Saffron)	2	1315.5	890.5	2	1320	890.5	0	0	0	0	0	0
7	De Vasconcelos ,T (Tiaana)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	De Vasconcelos ,T (Tiaana)	2	1512.2	1087.2	2	1460.2	1087.2	0	0	0	0	0	0
8	Pillay ,K (Ketana)	2	0	-425	2	0	-425	0	0	0	0	0	0
8	Pillay ,K (Ketana)	2	1263.3	838.3	2	1255.2	838.3	0	0	0	0	0	0
9	Myburgh ,M (Melinda)	2	2	425	2	2	425	0	0	0	0	0	0
9	Myburgh ,M (Melinda)	2	1130.9	1555.9	2	1133.4	1555.9	0	0	0	0	0	0
10	Moyo ,N (Nkosana Junior)	2	0	-425	1	0	-425	1	0	-425	0	0	0
10	Moyo ,N (Nkosana Junior)	2	1390.7	965.7	1	1374.2	965.7	1	1200	965.7	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Marais, J (Janike)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms